湿法炼锌窑渣铁精矿中有价组分浸出行为及其机理

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 27; no. 4; pp. 901 - 907
Main Author 王红军;刘智勇;刘志宏;李玉虎;李思唯;张文海;李启厚
Format Journal Article
LanguageEnglish
Published 2017
Subjects
窑渣;铁精矿;盐酸浸出;无定形SiO2
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Bibliography:kiln slag; iron concentrate; hydrochloric acid leaching; amorphous silica
43-1239/TG
It is taken as a novel prospective process to treat iron concentrate from hydrometallurgical zinc kiln slag forcomprehensive utilization of valuable metals by a hydrochloric acid leaching-spray pyrolysis method.The leaching mechanism ofdifferent valuable metals was studied.The results revealed that the leaching rates of Ag,Pb,Cu,Fe,As and Zn were99.91%,99.25%,95.12%,90.15%,87.58%and58.15%,respectively with6mol/L HCl and L/S ratio of10:1at60°C for120min.The actionof SiO2in leaching solution was also studied.The results showed that the precipitation and settlement of SiO2(amorphous)adsorbedpart of metal ions in solution,which greatly inhibited the leaching of Cu,Fe,As and Zn,so it is crucial to control the precipitation ofamorphous SiO2.
ISSN:1003-6326