Shangluo City, located in the southeast of Shaanxi hinterland of Qinling Mountains, is one of 11 national focus on contiguous poverty-stricken areas, the state "diversion" security zone midline of water quality, the national metal and non-metallic mineral resources, mainly rich region, the city There are 46 species of minerals that have been identified and included in the reserves of Shaanxi Province, and 35 large-scale mineral deposits. The potential value of mineral resources exceeds 340 billion yuan. In the past, due to historical reasons, the extensive management of mineral resources development caused a large number of tailings to be piled up. In recent years, with the accelerated development of modern materials industry focusing on metals, non-metals and building materials, the discharge of industrial solid waste is increasing day by day. There are 316 metal and non-metal tailings, mining and smelting slag yards, including 109 tailings ponds, accounting for 37.7% of Shaanxi Province, accounting for nearly 1% of the country's total, and the accumulation amount is more than 43 million. Tons, not only occupy a lot of land, but also pollute the environment. In particular, Shangluo is located in areas with frequent natural disasters such as heavy rains and floods. The tailings pond has long been threatened by flash floods and mudslides, endangering the lives and property of the people in the lower reaches, and at the same time jeopardizing the safety of water quality in the Middle Route of the South-to-North Water Transfer Project.  two  Four Daye Nonferrous Tongshankou mine tailings utilization is expected to increase 1 million m3 font: medium and small Time: 2010-09-15 14:31 Source: unknown Author: Association of Resources Comprehensive Utilization Hits: 33 from Daye Nonferrous Copper The technical department of Shankou Mine was informed that the utilization project of the tailings pond utilization rate of the mine has been put forward by the Hunan Changsha Nonferrous Metallurgy Design and Research Institute. After the implementation of this plan, the utilization ratio of the existing tailings pond of the mine will be effectively improved. And it is expected to increase the effective storage capacity to 1 million cubic meters. The mine tailings reservoir was built in May 1980 and was temporarily replaced by Changsha Metallurgical Design and Research Institute.  Five tailings "drained endured" - comprehensive utilization of mineral resources font: medium and small Time: 2010-09-15 14:34 Source: unknown Author: Association of Resources Comprehensive Utilization of clicks: 106 times abandoned coal gangue, shale through More than a dozen processes, such as crushing and processing, and turning into a new type of brick with uniform specifications and beautiful appearance. This is the scene seen recently by Dacheng New Brick Co., Ltd. in Qingliu County, Fujian. The staff of the company told the reporter that the company has a technologically advanced tunnel kiln production line, with an annual output of 40 million new bricks. Among them, the abandoned coal gangue and shale of coal gangue have undergone more than a dozen processes such as crushing and processing and screening. A new type of brick with uniform specifications and beautiful appearance. This is the scene seen recently by Dacheng New Brick Co., Ltd. in Qingliu County, Fujian. The staff of the company told the reporter that the company has a technologically advanced tunnel kiln production line, with an annual output of 40 million new bricks, of which 70% of coal gangue is added, and the annual consumption of coal gangue is 125,000 tons, and the whole calcination and drying process The required heat energy comes from the thermal energy contained in the coal gangue itself, which not only reduces the pollution of tailings stacking, but also saves coal resources and realizes “win-win†for ecological benefits and production benefits.  six New building materials to build a bridge green energy breakthrough font: medium and small Time: 2010-09-15 14:30 Source: unknown Author: Association of Resources Comprehensive Utilization Hits: 53 strong proponent of green, energy-saving and environmental protection is the development of new building materials Very importantly, according to Fu Guixiang, deputy general manager of Kailuan Group, at present, Kailuan Group's new building materials company is exploring the process of using fly ash to make new building materials, considering the use of fly ash paper, fly ash bricks, etc. Comprehensive utilization of projects. These technologies have been relatively formed. Several companies in China have been vigorously promoting green environmental protection. Energy conservation and environmental protection are very important for the development of new building materials. According to Fu Guixiang, deputy general manager of Kailuan Group, at present, the new Kailuan Group The building materials company is exploring the process of using fly ash to manufacture new building materials, considering the comprehensive utilization projects such as coal fly ash paper making and fly ash brick making. These technologies have been relatively formed, and several companies in China have entered the trial production stage. From the perspective of energy conservation, environmental protection, comprehensive utilization, and enterprise development, these new projects are of great significance. Therefore, Kailuan actively investigates and strives to build a new large-scale industry. Seven Qinghai Coal fish card company gangue fired brick production line of 1.8 million yuan in economic returns font: medium and small Time: 2010-09-15 14:33 Source: unknown Author: Association of Resources Comprehensive Utilization of hits: 76 times the total investment of 67 million Yuan, built an annual production capacity of 60 million coal gangue sintered brick production lines. From January to June this year, it has produced 48 million pieces of coal gangue sintered bricks, using 108,000 tons of coal gangue, creating economic benefits of 1.8 million yuan, greatly improving the comprehensive utilization of coal resources. The utilization level has realized resource recycling, intensive use and sustainable development. 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In order to fundamentally eliminate the hidden dangers of tailings, solve the problem of tailings environmental pollution, and at the same time change tailings into secondary resources to achieve economic, social and ecological benefits. Since 2008, the Shangluo Municipal Party Committee and the Municipal Government have reviewed the situation and stood at the political height, scientifically made the "Decision on Vigorously Developing Circular Economy", and vigorously developed modern materials and their supporting tailings resources comprehensive utilization industry in accordance with the concept of circular economy. Continuously extending the industrial chain, implementing the comprehensive utilization of industrial waste resources, and proposing the goal of creating a national tailings resource comprehensive utilization demonstration base and a national circular economy demonstration city, and exploring the "One Core Two Supporting Three Linkages" Shangluo tailings resource The comprehensive utilization of the industrial development model has been praised by experts as the “Shangluo Modelâ€.
The “one core†is to create a national demonstration base and promote the development of the comprehensive utilization of tailings resources as the core. The Shangluo Municipal Party Committee and the Municipal Government insisted on planning first, and timely compiled the “Shenluo Modern Material Industrial Base Construction Planâ€, “Shangdan Circular Industrial Economic Park Industrial Project Construction Plan†and “Shangluo Tailings Comprehensive Utilization Demonstration Base Construction Planâ€. The Provincial Development and Reform Commission approved the implementation, and the Shangdan Cycle Industrial Park was approved as a provincial industrial park. Adhere to the project-driven strategy, take the lead in implementing the comprehensive utilization of tailings resources as the pre-condition for the approval of mine mining and selection projects, and implement the “three simultaneous†system, that is, the comprehensive utilization project of tailings resources and the main mining and selection project of the mine, At the same time, construction and production at the same time. The comprehensive utilization project of tailings resources was included in the assessment scope of major projects, which promoted the industrialization development of comprehensive utilization of tailings resources. By the end of 2011, the city has built Shangluo zinc smelting plant electrical waste recycling valuable elements zinc, copper mining company Danfeng Wong Toi tailings recovery of valuable elements to South Huarui company tailing glass, Shangluo Yao Bo Xiushan tail More than 30 projects represented by mine cement and new wall materials of Baoshui tailings in Lishui, nearly 6 million tons of tailings and waste slag can be used annually, and the industrialization development pattern of comprehensive utilization of tailings resources is initially formed. Â
“Second support†is supported by technology and policy support to promote industrial development. Established Shangluo Branch of Shaanxi Modern Materials Research Institute, China Tailings Technology Shangluo R&D Center, Shaanxi Provincial Key Laboratory of Comprehensive Utilization of Tailings Resources, and the Municipal Tailings Resources Comprehensive Utilization Center joined the National Tailings Technology Strategic Innovation Alliance to form a relatively complete Development and utilization system for comprehensive utilization of tailings resources. The municipal government issued the "Opinions on Supporting the Development of the Comprehensive Utilization of Tailings Resources", determined the guiding ideology, basic principles and development goals of the comprehensive utilization of tailings resources in Shangluo, and issued relevant supporting measures, which is the first in China. The support opinions issued by the prefecture-level government specifically for the development of the comprehensive utilization of tailings resources. Â
"Three linkages" means organizing guarantees, demonstrations, and associations to help the industry develop. The municipal government set up a leading group for the comprehensive utilization of tailings resources, and established a comprehensive utilization center for tailings resources in cities and counties, becoming the first urban area in the country to set up an administrative agency specializing in the comprehensive utilization of tailings resources. In the province, the company took the lead in carrying out the certification of circular economy and comprehensive utilization of tailings resources, and carried out the activities of creating circular economy demonstration parks and tailings resources comprehensive utilization demonstration enterprises. The establishment of the Shangluo City Resources (tailings) Comprehensive Utilization Association has become a bridge between enterprises and the government. The website of comprehensive utilization of tailings resources in Shangluo City was established, and a press conference on the construction of modern materials and tailings resources comprehensive utilization demonstration base in Shangluo City was successfully held, and “Don't live up to the green hills and green waters†was produced – to build a demonstration of comprehensive utilization of national tailings resources. The base feature film, comprehensive and wide-ranging publicity, promoted the healthy and orderly development of the comprehensive utilization of Shangluo tailings resources. By 2020, after the completion of the six major categories of 46 projects in the “Shenluo City Tailings Comprehensive Utilization Demonstration Base Construction Planâ€, 13.28 million tons of tailings can be digested annually, with a sales income of 11.3 billion yuan and a profit and tax of 4.5 billion yuan. . The demonstration base of comprehensive utilization of Shangluo tailings resources will surely become a banner to lead the comprehensive utilization of resources and develop circular economy.
Source: Shaanxi Daily
Tianjin use of iron ore tailings production of ready-mixed concrete font: medium and small Time: 2010-09-15 14:31 Source: unknown Author: Association of Resources Comprehensive Utilization Hits: 75 Recently, the reporter from the Tianjin Port Free Trade Zone Air Paul commodity Concrete Supply Co., understanding By the time, the company's technicians have been researched and developed to use the waste iron tailings in the mining area instead of natural sand to produce ready-mixed concrete. According to reports, this move only in the company can eat 300,000 tons of iron tailings every year, will greatly reduce the tailings dumping land, to achieve waste, recently, reporters from Tianjin Port Free Trade Zone Air Insurance Commodity Concrete Supply Co., Ltd. It is learned that the company's technicians have been successfully researched and used the waste of the mining area, iron tailings and gravel, instead of natural sandstone to produce ready-mixed concrete. According to reports, the move will only consume 300,000 tons of iron tailings per year, which will greatly reduce the tailings dumping area, realize the conversion of waste as resources, and promote the “greening†of commercial concrete production.
Tailings means a metal or metalloid ore mining, mineral processing plant was selected after valuable waste concentrate discharge. According to statistics from relevant departments, the current tailings accumulation in China has reached 8.051 billion tons. At the same time, with the acceleration of infrastructure construction in China, the annual aggregates consumed by ready-mixed concrete – at least 600 million tons of natural gravel and pebbles, and about 400 million tons of stone sand, require a large amount of mountain mining and river excavation, thus leading to the environment. Deterioration and further scarcity of resources. If the use of iron tailings is increased, it will be beneficial to alleviate the above situation. Using the technical advantages, the company has actively carried out experimental research on the use of iron tailings as aggregates in the production of ready-mixed concrete, and has achieved satisfactory results. The national patent department has accepted the invention patent.
At present, the ready-mixed concrete produced by the company's iron tailings and gravel has been applied to construction projects such as housing construction, municipal engineering and water transportation engineering. According to the inspections of relevant departments and construction workers, the ready-mixed concrete produced by this method has good workability and pumpability, and the appearance quality and mechanical durability index of concrete are excellent. The use of iron tailings sand as an aggregate can replace at least 50% of natural sand. If it is promoted in the ready-mixed concrete industry, at least 300 million tons of natural stone and 200 million tons of natural sand will be reduced every year, and the realization of solid waste will be reduced.
Recycling of three old resources: tailings become "head color"
Font: medium and small Time: 2010-09-15 14:30 Source: unknown Author: Association of Resources Comprehensive Utilization of hits: 55 times tailings pile workshop featured taken to promote the integration of mountain economic restructuring industry, one important task is to implement The diversified resource application strategy shifts from low-efficiency single resource development to high-efficiency comprehensive utilization, from relying solely on primary mineral resources to turning waste into treasure and using renewable resources. As the old industrial base of the Red River, huge stocks of tailings and smelting slag have become Â
Fine selection workshop
The integration of mountain tailings to promote industrial economic transformation, one of the important tasks is to implement a diversified resource application strategy, from low-efficiency single resource development to high-efficiency comprehensive utilization, from relying solely on primary mineral resources to turning waste into treasure Use of renewable resources to change. As the old industrial base of the Red River, huge stocks of tailings and smelting slag have become a major resource for industrial economic growth.
Gushan cloud Tin Tin, is devoted to the use of tailings elect one of tin metal business again. On August 4th, at the preliminary selection of the Yunshan Gushan tin mine, the reporter saw that the Liuqitai bulldozer pushed the tailings mud to the pits of two grinding machines, and the fine tailings mud was selected through several sieve beds. Diverted and finally entered the selection workshop. Mechanical workers Li Jianguo and Zhang Youhua pointed to a small hill and told reporters that the hills were all piled up in tailings. They were piled up here since the 1950s. I don’t know how many cubes there are. Now the factory has improved the screening process, and these tailings that have been stacked for many years are being re-screened and utilized, which not only forms an industry, but also increases employment.
Yang Yudong, deputy director of the Yunxi Gushan Tin Mine Selection Workshop, told the reporter that Gushan Tin Mine is a mineral processing enterprise under the Yunxi Company. With the depletion of the mine tin ore source, the Gushan tin mine began to use the tailings again on a small scale more than 10 years ago. Selected tin metal, the original daily processing capacity is only 300 to 400 tons, the head office investment in 2008 expanded the scale, and now processing tailings up to 330,000 tons, in 2009, the company produced 230 tons of fine tin ore. The number of employees in the whole mine has increased to 179, and more than 160 people have been employed in contracting and temporary employment. Although the tailings selection production is costly, it is a resource reuse that turns waste into treasure. In the next step, the company will also invest in the introduction of advanced equipment to improve product quality and production efficiency, and make greater contributions to the protection and conservation of mineral resources.
Honghe Zincian Industry & Trade Co., Ltd., located in Jijie Town, Gejiu City, collects soot from the smelting steel and extracts zinc, lead , antimony , iron, indium, etc. through the patented process of enrichment-wet separation by fire method. metal. Through continuous improvement of technical equipment and processes, the company currently handles 100,000 tons of smoke per year, accounting for 80% of the dust emissions of steel companies in the province. In 2009, the company produced 4,130 tons of zinc, 3.98 tons of indium, 60 tons of crude, 15 tons of cadmium sponge and 900 tons of crude tin. The annual sales income is 69 million yuan and the tax paid is 2.01 million yuan. Wang Shuzhen, general manager of the company, told reporters: "Recycling waste in metal smelting is the only way to transform and sustain the growth of industrial economy. It is also the responsibility of metallurgical industry enterprises. We will better enlarge and strengthen this industry."
Our state is located in the global “Pacific Rim Metallogenic Belt†and “Himalaya Mountain Metallogenic Beltâ€. It is rich in mineral resources and concentrated in distribution. It is one of the few non-ferrous metals and rare precious metal enrichment areas in China. Especially old, in addition to the world famous tin, there are also a large number of metals such as lead, zinc, copper, iron, nickel , gold, silver , indium, antimony , molybdenum . Since 1950, Gejiu City has produced more than 5.2 million tons of non-ferrous metals. While making great contributions to the country, the advantages of old mineral resources are also facing a recession. In 2008, Gejiu City was listed as one of the first 12 cities in the country to deplete resources. The comprehensive utilization of tailings and smelting slag has become an important choice for the growth of the old industrial economy.
There are 47 tailings pools in Gejiu City, which are distributed in 6 townships in the city. As of the end of 2008, the total amount of tailings storage has reached 246 million tons. It contains 370,000 tons of tin, 4.43 million tons of lead, 1.85 million tons of zinc and 740,000 tons of copper. In particular, the metal content of iron is as high as 60 million tons. The total metal content in the tailings is already higher than the metal reserves currently held in the old mines.
A large amount of tailings storage not only occupies land resources, but is mostly powdery, which easily causes pollution and damage to the surface, air and groundwater, and lurks geological disasters such as mudslides, landslides, and tailings dam collapse.
In recent years, under the guidance of the party's transformation and development mode and the new industrialization road policy, many enterprises that use tailings, smelting slag, and soot to extract metals have emerged in our state. The spring breeze of transforming the mode of industrial economic growth has spurred the development of this new force and added to the flourishing industry of our state.
Yunnan Chengfeng Nonferrous Metals Co., Ltd. uses smelting waste slag as material and is equipped with some tin concentrates for smelting. It produces 15,900 tons of refined tin, 129.6 tons of silver and indium, and realizes sales income of 1.957 billion yuan and taxes of 113 million yuan.
Yunxi Group Chuangyuan Economic and Trade Co., Ltd. uses low-sulfur Gaokun tailings as a raw material in the local copper sulfide ore dressing, with an annual processing capacity of 300,000 tons, sulfuric acid production of 200,000 tons, and production of iron-containing slag 240,000. Tons are re-smelted by steel mills.
Gejiu Fuxiang Industry and Trade Metal Company, Hengrui Company, Xilong Company, Guangmu Industry and Trade Company, Yunxi Group's Guangyuan Company, Tianjue Company, etc. are all enterprises that use smelting slag, tailings and other raw materials for comprehensive technology to extract metals. . These companies have set an example for saving resources, protecting resources, and taking the path of sustainable development.
The state of tailings and smelting slag storage in our state is huge, and it is a valuable treasure. The state party, the state government and some people of insight have seen great wealth and business opportunities. They started development and preparation in the last century. It laid the foundation for the sustainable development of new industries.
It was learned from the technical department of Daye Nonferrous Copper Shankou Mine that the mine tailings recovery utilization project has been put forward by the Hunan Changsha Nonferrous Metallurgy Design and Research Institute. After the implementation of this plan, the existing tailings pond of the mine will be effectively improved. The utilization capacity is expected to increase the effective storage capacity to 1 million cubic meters. Â
The mine tailings reservoir was built in May 1980. It was designed by the Changsha Metallurgical Design and Research Institute according to the temporary tailings pond plan. In June 1982, the preliminary design of the temporary tailings pond was expanded and completed and put into use in 1985. In May 1993, the Beijing Nonferrous Metallurgy Design and Research Institute carried out a program design for the heightening and expansion project of the tailings pond dam. The storage capacity was also expanded from the initial 5.05 million cubic meters to 13.12 million cubic meters. Â
In recent years, due to the continuous expansion of the production scale of the mine, the tailings discharged every year has increased year by year, and the construction of new or expanded tailings ponds is imminent. At present, due to the land acquisition and relocation of the new tailings pond, it is still in the negotiation stage. At the same time, the connection between the new and old tailings ponds also needs a transition period of about one year. Therefore, the mine decides and reports to the higher authorities for approval. The mine will carry out corresponding technical transformations to improve the utilization of the storage capacity and appropriately extend the service life of the existing tailings pond. Â
It is understood that the mine tailings pond reconstruction design plan mainly uses large bagged tailings dams in the reservoir on the water side, and constructs a large tailings pond with the surrounding dams, which is equivalent to adopting the “pool filling methodâ€. "The mine is placed on the east side of the dry beach to improve the utilization of the storage capacity. According to the mine's current 4,000 tons of ore processing per day, the ore dressing plant will produce approximately 900,000 cubic meters of tailings per year. To this end, the newly added capacity of 1 million cubic meters of storage capacity can meet the production needs of the mine for about one year, and can also realize the effective transition of the mine implementation of the tailings reservoir reconstruction and expansion project. (钱永红)
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In recent years, Qingliu County has actively explored new ways to save intensive use of mineral resources, and through the integration of resources and technological transformation, the comprehensive utilization level of coal gangue and tailings has been improved. Â
Resource integration and agglomeration industry advantage Â
Lead-zinc mines with only 1% of mines and companies to exploit and use seem to be impossible, but they have become a reality in Qingliu County. In 2007, Qingliu County compiled a mineral resources development and integration plan, integrated three lead-zinc mining rights and one lead-zinc prospecting right, and unified mining by Hualong Mining Co., Ltd., and re-developed the development and utilization plan to low-grade ore and High grade ore mixed beneficiation, ore grade dropped to 1%. Â
According to Yu Ben, general manager of Hualong Mining Co., Ltd., the company has three lead-zinc mines and two concentrating plants. The Renchang mine and the village tail mine are similar in distance, but the ore grades are far apart, and the Renchang ore grade is only 1%. If there is no integration, the company has long abandoned the mining of the Renchang mine. After the integration of resources, the utilization rate of ore is now increased, and at least the service life of the mine for 5 years can be extended. Â
The accumulation of resources to superior enterprises not only solves the problem of “small and scattered†mining of mineral resources, but also guarantees the sustainable development of core enterprises. Â
There are abundant fluorite resources in the Qingliu area. 23 fluorite deposits (points) have been discovered and the resource reserves have reached more than 10 million tons. In order to give full play to the benefits of resources, in recent years, the county has taken the form of combination of factories and mines, strong alliances, and upstream and downstream integration to actively guide fluorite mining enterprises to connect with chemical companies and cultivate industrial competitive advantages. Xu Nengwu, head of Qingliu County Dongying Chemical Co., Ltd. told reporters that due to the limited amount of fluorite mining in each year, through the integration, the company's production of raw materials has been guaranteed, coupled with the company's capital and technical advantages, it can not be restricted to the production of hydrogen fluoride Such primary products can also develop into downstream industries and enhance the competitiveness of enterprises. Â
"Whether it is to extend the service life of the mine, or to extend the industrial chain and increase the added value of mineral products, we are adhering to the concept of "drying out the mineral resources" and digesting the county as much as possible." Hu Yonghuan, Director of Qingliu County Land and Resources Bureau If so. Â
Technical transformation to improve the recovery rate of mineral processing Â
Into the workshop of the concentrator of Hualong Mining Co., Ltd., accompanied by the roar of the machine, a smell of medicinal smell came. The general manager of the home base pointed out that the running tailings recovery system is proud to say: "Now 100 tons of pyrite can be floated from the tailings of lead-zinc mines every day. The recovery rate of ore dressing is increased from 90% to 93%. According to reports, before 2008, Hualong Mining's beneficiation equipment could only select lead and zinc. The tailings containing a large amount of pyrite were directly sent to the cement plant as ingredients, which insured a lot of resources. To this end, the company carried out technical transformation of the beneficiation equipment, re-floats the tailings and then added the chemicals, directly separating the pyrite, greatly improving the recovery rate of the ore. Â
This is an example of Qingliu County actively guiding mining enterprises to carry out technological transformation and improve the recovery rate of mineral processing. In 2007, the county re-planned the Beikeng tungsten mine, optimized the mining process, and through the technical transformation, the flotation column was used to further recover the tailings. The tungsten recovery rate increased by 4 percentage points to 85%. Comprehensive recovery of valuable metals such as antimony and molybdenum in ore. According to the person in charge of the Beikeng tungsten mine, after the mining and refining, a large number of pillars were left. After the technical transformation, the valuable metals in the pillars could be recovered. At the same time, the power consumption and water consumption decreased by 21%, and the comprehensive utilization rate of resources was very obvious. Â
Tailings recovery turns waste into treasure Â
In the past, industrial waste slag was piled up into mountains, which occupied both land and environmental pollution, but now it has become a new raw material for cement production. In the Fujian Honghuo Cement Co., Ltd. plant, the machine that uses industrial waste residue to produce cement clinker is constantly running. Wu Yanliang, the person in charge of the company, said that the company can use more than 500,000 tons of industrial waste every year, including more than 400,000 tons of coal gangue and 100,000 tons of waste fluorogypsum . At the same time, it uses more than 55 million kWh of cement waste heat to save a lot of coal resources. Â
There are 46 mining enterprises in Qingliu County, with an annual output of 1.13 million tons of ore. About 300,000 tons of coal gangue and a large amount of tailings such as lead and zinc and fluorite ore are produced each year. For industrial wastes such as coal gangue, Qingliu County adheres to the guiding ideology of “adapting to local conditions and actively utilizingâ€, and implements the principle of “who discharges, who governs, who uses, and who benefitsâ€, and at the same time formulates preferential policies and actively introduces and sets up coal. A new wall material enterprise that uses tailings such as meteorites as raw materials. Â
With the continuous production of industrial wastes such as Fujian Honghuo Cement and Qingliu Dacheng New Bricks, the industrial waste generated in Qingliu County is basically used twice, achieving a “win-win†for economic, environmental and social benefits. .
Kailuan Coal Mine produces a large amount of solid waste, namely coal gangue. The coal gangue stack not only occupies land, but also emits a large amount of SO2 gas. At the same time, dust and coal dust rise and the air pollution is very serious. The gangue sintered multi-brick produced by Kailuan New Building Materials Co., Ltd. has a coal gangue ratio of 95%. According to the national standard for producing 10,000 standard block bricks, the coal can not exceed 0.8 tons. The standard block will save more than 8,000 tons of coal.
Moreover, in the production process of coal gangue sintered bricks, there will be a lot of waste heat. The new building materials company collects the remaining heat for heating in winter. These waste heat can also dry the wet bricks and speed up the production cycle.
It is reported that by 2010 China's building energy efficiency will reach 50%. New building materials factory production of coal gangue fired brick itself has the effect of energy, coal gangue fired brick thermal conductivity is 0.411, lower than the thermal conductivity of ordinary clay bricks doubled this winter heat slowly, it will reduce the loss of heating, Thereby, the consumption of raw coal used for heating can be reduced, and the loss of air-conditioning air-conditioning can be reduced in summer, and electricity can be saved. This will bring huge opportunities to new building materials companies.
Kailuan new building materials company around the Group's development goals, focus on quality and production, savings and consumption: First, simplify the production process equipment, stop the high-power wet wheel mill, run for three months, monthly power saving 42240 kW At the time, the fuel economy is 170 kilograms, and the cost of spare parts for materials is about 0.3 million yuan. The annual savings of 250,000 yuan. The second is to transform the 70/60 brick extruder. Due to the large diameter of the lower reamer of the 70/60 brick squeezing machine, the resistance is large and the working current is high. After changing to the 60/60 brick squeezing machine, it can reduce the mud resistance and reduce the working current. The third is to install a smart power saver in the first and second phases of the raw material workshop, so that the energy saving is about 6 degrees per hour. It is estimated that the monthly electricity saving will be more than 30,000 degrees, and the annual saving will be 18,000 yuan.
Paying attention to environmental protection, continuous development and breakthrough is the key point, which not only contributes to environmental protection, but also promotes the progress and development of society. Â
All the manuscripts in this website that are marked as "China's Circular Economy" are copyrighted by this website and may not be reproduced without authorization. If you need to reprint, please contact 010-82290313 for authorization. Please reprint the source of the manuscript: "China Circular Economy". This website does not indicate the source and reprint. It is for the purpose of transmitting more information. It does not mean to endorse its views or confirm the authenticity of its contents. It is for readers' reference only. This website does not assume any responsibility. If the reprinted manuscript involves copyright issues, please call or write to us within two weeks.
The project has a total investment of 67 million yuan and has an annual production capacity of 60 million pieces of coal gangue sintered brick production line. From January to June this year, it has produced 48 million pieces of coal gangue sintered bricks, using 108,000 tons of coal gangue, creating an economic benefit of 1.8 million yuan. The comprehensive utilization level of coal resources has been improved, and resource recycling, intensive use and sustainable development have been realized. Â
All the manuscripts in this website that are marked as "China's Circular Economy" are copyrighted by this website and may not be reproduced without authorization. If you need to reprint, please contact 010-82290313 for authorization. Please reprint the source of the manuscript: "China Circular Economy". This website does not indicate the source and reprint. It is for the purpose of transmitting more information. It does not mean to endorse its views or confirm the authenticity of its contents. It is for readers' reference only. This website does not assume any responsibility. If the reprinted manuscript involves copyright issues, please call or write to us within two weeks.