Selection of roasting conditions containing golden iron ore

Pyrite based thermogram its endothermic peaks at ± 50 ℃ 650 ℃. Mass production practice has proved that the pyrolysis temperature of pyrite is one of the key factors affecting the gold leaching rate in the calcine. The higher the calcination temperature, the deeper the color of the calcine produced, which is the increase in the output of magnetite (Fe ₃ O ₄ ). It not only reduces the exposure of gold particles, but also reduces the leaching rate, and the hardness of the calcine is large, which makes it difficult to grind. Therefore, in the usual case, the calcination temperature stress is calcined at an allowable lower limit temperature to produce a reddish brown calcined mainly Fe ₂ O ₃ (hematite). This calcination can be cyanated under rough or non-abrasive conditions, and the recovery rate of gold is also high.

In order to maximize the gold grain exposure, in order to increase the gold leaching rate, it is tested that the water-quenched water-quenched slag of the red-hot calcine discharged from the calciner is more than the cyanide leaching rate of the dry-discharged gold. Increase by 7%. Its role is due to the rapid calcination of hot calcined concrete, which causes more gold particles to be exposed.

Due to the different mineral structure and composition of the golden iron ore in various places, the temperature of the endothermic peak during baking is also different, and the experimental determination can be made to select the optimum baking temperature and baking time. Many factories and mines roast pyrite for acid production. In order to meet the acid production requirements, the calcination temperature is usually raised to 850 ° C or higher, which is disadvantageous for calcine gold extraction. For factories and mines that use roasting acid containing gold iron ore, the interests of both acid and gold should be taken into account to improve economic efficiency.

Truck Piston Pin materials are generally low carbon steel or low carbon alloy steel, such as 20, 20 mn, 15Cr, 20 cr or 20 MNV. The outer surface is hardened by carburizing and then refined and polished. This not only improves the surface hardness and abrasion resistance, but also ensures high strength and impact toughness.