Separation of Zn and Fe Content in an EAF Dust
This work is dedicated to the chemical treatment of a typical EAF dust by chlorine content agents.The residue contains 48% Fe2O3 and 28% ZnO mainly in the franklinite structural form.The others less compounds are: 4.00% CaO,2.60% MnO,2.20% MgO,1.08% PbO,0.36% Cr2O3,0.21% B2O3,0.03% CdO and 0.01% NiO.The experiments purpose is selectively to remove zinc from the residue leaving the iron behind.Thermodynamics studies have indicated some roasting possibilities.The experimental results have shown that both HCl leaching and carbochlorination will remove iron and zinc without any selectivity.However,either the chlorine or the calcium chloride roasting seems to form,preferentially,the zinc chloride.So,it will be presented how the EAF Dust can be treated by the using of chlorine roastings process such as carbochlorination in order to separate the zinc and iron present in the frankilinite,main EAF dust content.
Separation EAF Dust
E.A.Brocchi F.S.Santos
Metallurgical and Materials Science Departament,DCMM - PUC-Rio,Brazil
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3718-3724
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）