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Temperature chlorination roasting process in sulfuric acid slag iron separation Location: Home >>News >>Profession news

Temperature chlorination roasting process in sulfuric acid slag iron separation

Temperature chlorination roasting process in sulfuric acid slag iron separation is just as the following description:
1 Chloridizing roasting of sulfuric acid slag  The sulfuric acid slag should be roasted in 500-600 high temperature and added 8%-10% sodium chloride.The equation is :2NaCL+MS+2SO2=MCL2+Na2SO4.
2 Water leaching The steeping solution is used to extract copper,cobalt and so on.The steeping solution has the following composition:TFe 61.2-61.9% Cu ore 0.08% Zn 0.18-0.2% Pb 084-0.85%,this slag is the good raw material for sulfuric acid slag iron separation,but in this raw material,the content of Pb can reach 0.85%-0.45%,so in the iron separation process,there should be equipped with row lead tank and lead mouth under the furnace bottom to discharge the lead timely.
3 Refine the sulfuric acid slag liquid The method is by using sodium chloride oxidation to make Fe precipitate,the equation is: Fe(2+)+O2--Fe(OH)3.
4 Adding lime or soda makes the cobalt ions react with hydroxy radical,which generates  cobalt hydroxide precipitation,then sodium soap are added to extract Cu,Zn powder is added to replace chromium , indium and so on.Finally by neutralizing the Zn precipitation you can separate out the iron ore.

Above are the temperature chlorination roasting process in sulfuric acid slag iron separation process.


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