矿冶工程
礦冶工程
광야공정
2014年
6期
94-96
,共3页
锌阳极泥%硫化锌精矿%吉布斯自由能%焙烧
鋅暘極泥%硫化鋅精礦%吉佈斯自由能%焙燒
자양겁니%류화자정광%길포사자유능%배소
zinc electrolysis anode%zinc sulfide concentrate%Gibbs free energy%roasting
通过热力学理论分析，计算出锌阳极泥?硫化锌精矿混合焙烧过程可能发生的各反应吉布斯自由能；同时运用X射线衍射技术研究了焙烧过程中主要矿物物相的变化。理论和试验结果均表明：锌阳极泥?硫化锌精矿混合焙烧过程中，硫化锌首先发生氧化反应，生成ZnO和SO2，之后MnO2与SO2反应生成MnSO4。经混合焙烧工艺，有利于下一步的锰浸出工艺。
通過熱力學理論分析，計算齣鋅暘極泥?硫化鋅精礦混閤焙燒過程可能髮生的各反應吉佈斯自由能；同時運用X射線衍射技術研究瞭焙燒過程中主要礦物物相的變化。理論和試驗結果均錶明：鋅暘極泥?硫化鋅精礦混閤焙燒過程中，硫化鋅首先髮生氧化反應，生成ZnO和SO2，之後MnO2與SO2反應生成MnSO4。經混閤焙燒工藝，有利于下一步的錳浸齣工藝。
통과열역학이론분석，계산출자양겁니?류화자정광혼합배소과정가능발생적각반응길포사자유능；동시운용X사선연사기술연구료배소과정중주요광물물상적변화。이론화시험결과균표명：자양겁니?류화자정광혼합배소과정중，류화자수선발생양화반응，생성ZnO화SO2，지후MnO2여SO2반응생성MnSO4。경혼합배소공예，유리우하일보적맹침출공예。
Based on thermodynamic analysis, Gibbs free energy for possible reactions amid the roasting of a mixture of zinc anode slime and zinc sulfide concentrate was calculated, while X?ray diffraction( XRD) was used to study the phase transformations through the roasting process. It is verified by theoretical and experiment results that there are mainly two sequential chemical reactions occurred in this roasting process:ZnS is firstly oxidized to ZnO and SO2 , then MnSO4 can be obtained after the reaction between SO2 and MnO2 . The roasting process of this mixture will surely facilitate the following manganese?leaching process.
