Phosphorus ore mineral resources is of advantage, but more than 90% of the reserves of low-grade hard mineral, ore and most Mg0, A1 2 0 3 and Fe 2 O 3 content is high, phosph.......
The waste electrolyte contains 250 to 300 g/l of gold . Commonly used recovery methods are replacement method and reduction method.
Replacement: replacing zinc powder, the reaction is:
2HAuCl
Common methods are:
Purification Method 1. The charge activated chloride: activated carbon adsorption air containing mercury, mercury chloride and mercuric chloride and generated.
Hg+Cl 2 →HgCl 2 ↓
T.......
Phosphorus ore usually underground mining and open pit mining. Most of China's phosphate deposits are located in mountainous areas and are buried deep. Underground mining accounts for about 60% of the total output of the original ore. The .......
Evaluation of Nano Titanium White methods are the following criteria:
1 particle purity and surface cleanliness;
2 Whether the particle size and distribution of the particles are controllable;
3 particle geometry is uniform, cry.......
Mr. Ding Daoheng July 1927 to examine the way the iron ore found in the northwest, in 1935, Professor He Zuolin found rare earth minerals in ore samples retrieved in Mr. Ding Daoheng. After the founding of the People'.......