会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 52. 发明专利
    • DE1809153B1
    • 1970-09-24
    • DE1809153
    • 1968-11-15
    • DUISBURGER KUPFERHUETTE
    • LIPPERT DIPL-CHEM DR KARLKUDELKA DIPL-CHEM DR HERBERTHENRICH DIPL-CHEM DR GUENTERROEDER DIPL-PHYS DR ALFRED
    • C22B1/02C22B1/08C22C
    • Procedure for the elimination and obtaining of non-ferrous metals, such as cu, zn, ag, au, as well as pb, as, sb and sn, from materials containing these elements and consisting mainly of iron oxides, especially of the roasting residues of pyrites and volatile powders, and transformation of the purified iron oxide components into a form suitable for blast furnaces, in a three-stage process, characterized in that in the first stage, in a multi-furnace floors, the materials are subjected to a known chlorinating toasting, but modified with respect to different parameters, such as, bulk loading height and raking speed; in the second stage, the roasted material obtained is leached by oxidation, chopping or pelletizing with the material thus obtained, if necessary after further milling; and in the third stage, alkaline earth chlorides, preferably calcium chloride and fine-grained carboniferous material, such as coal dust or ground coke, are added and the agglomerates, such as pellets, are heated with combustión gases adjusted as far as possible to which are neutral to slightly reducing, at temperatures above 900º c, preferably 1050-1150º c. (Machine-translation by Google Translate, not legally binding)