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| Behavior of Sphalerite in Oxidative Ammonia Leaching Process |
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Received:April 29, 2018
Revised:May 02, 2018
Accepted:May 03, 2018
Published Online:August 20, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.09.002 |
| KeyWord:sphalerite; oxidative ammonia leaching; NH3-(NH4)2SO4 system; Na2S2O8; BaO2 |
| Author | Institution |
| HUANG Ya-ling |
中南大学 化学化工学院 |
| YIN Zhou-lan |
中南大学 化学化工学院 |
| DING Zhi-ying |
中南大学 化学化工学院 |
| LIU Chun-xia |
中南大学 化学化工学院 |
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| Abstract: |
| In NH3-(NH4)2SO4 system, effect of oxidants (Na2S2O8 and BaO2) on leaching behavior of sphalerite was studied by ammonia oxidation leaching process. The results show that zinc leaching rate is 28.4% and 82% respectively with Na2S2O8 and BaO2 as oxidant under the conditions including temperature of 110 ℃, total NH3 concentration of 4.00 mol/L, [NH3]/[NH4 ]=5/3, agitation speed of 500 r/min, L/S of 25, particle size of 0.063 mm, and leaching time of 4 h. |
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