中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 5 No. 2 June 1995 |
REACTIONS OF PYRITE IN CATALYTICAL OXIDATION ACID LEACHING SYSTEM
（Institute of Chemical Metallurgy; Chinese Academy of Sciences; Beijing 100080）
Abstract:In H2SO4-HNO3-H2O-O2 system, the effects of solution composition, opreration factors and several additives on the reaction rate of pure pyrite have been studied in detail under the pressure condition. The results indicated that after leaching, the product percentage of oxidation residue is about 5 wt. -% and its composition mainly is α-S0 and H3Ofe3(SO4)2(OH)6. In the presence of HNO3, the reaction rate increased by about 10 times.
Key words: catalytic oxidation acidic leaching pyrite oxidation pretreatment
