2CuFeS 2 + H 2 SO 4 + 8.50 2 ==== 2CuS0 4 + Fe 2 ( S0 4 ) 3 + H 2 0
Symbiotic pyrite also leached under the leaching conditions such, at low pH, ferric iron hematite hydrolysis, to produce sulfuric acid, the following formula:
Fe 2 ( S0 4 ) 3 + 3H 2 0 ==== Fe 2 0 3 + 3H 2 S0 4
According to the reaction ratio calculation, oxygen is required to oxidize per kilogram of sulfur.
3Fe 2 ( S0 4 ) 3 + 14H 2 0 ==== 2 ( H 3 0 ) Fe 3 ( S0 4 ) 2 ( OH ) 6 + 5H 2 S0 4
The acid ( H + ) produced per mole of Fe 3+ hydrolysis is only 5/3 mol , and when hematite is formed, the acid ( H + ) produced per mole of Fe 3+ hydrolysis is 3 mol .
The stability of iron precipitation affects the safety of leaching slag discharge. The stability of hematite is best, no further water is explained, and lime does not react. Basic iron sulfate or the like reacts with lime, and iron ions are further hydrolyzed. Therefore, both ferric form a basic type or jarosite acid (H 3 0) Fe 3 ( S0 4) 2 (OH) 6, when the cyanidation slag, lime consumption tend to be large.
Properties:
Oxalic Acid is white crystal. Its melting point is 101-102 °C and sublimes at 157 °C.It is soluble in water,alcohol and ethyl ether. It is insoluble in benzene and chloroform. It is toxic. Pharmaceutical industry: for ring elements. Oxytetracycline. Borneol etc.;
Application:
1.Purifying agent in pharmaceutical industry, special in antibiotic medication, such as oxytetracycline,Chloramphenicol etc.
2.Precipitating agent in Rare-earth mineral processing.
3.Bleaching agent in the textile activities, wood pulp bleaching.
4.Rust-remover for metal treatment.
5.Grinding agent, such as marble polishing.
6.Waste Water Treatment, removing calcium from water.
Oxalic Acid,Oxalic Acid Crystals,Hydrated Oxalic Acid,Crystalline Oxalic Acid
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