(中南工業(yè)大學(xué)有色冶金系，長沙 410083)
摘 要: 對在稀鹽酸中以黃鐵礦作還原劑的太平洋錳結(jié)核浸出過程進(jìn)行了研究，探討 了黃鐵礦與錳結(jié)核的質(zhì)量比(R)、初始鹽酸濃度、液固比(L/ S)和浸出溫度等諸因素對錳結(jié)核中有價金屬元素Cu、Ni、Co、Mn及Fe浸出的影響。結(jié)果表明，當(dāng)R為0.3，C初(HCl) 1.5 mol/L，L/S 10∶1，90 ℃及浸提90 min的情況下，Cu、Ni、Co、Mn、Fe浸出率分別為95.77%、93.80%、96.80%、89.09%、49.06%；而當(dāng)C初(HCl)為 1.0 mol/L，其它條件相同，金屬提取率分別為91.84%、89.60%、86.67%、80.83%、0.63%。錳結(jié)核原料中 Si、 Al等雜質(zhì)元素浸出后存留在浸出渣中。
關(guān)鍵字: 濕法提取 錳結(jié)核 黃鐵礦
（Department of Nonferrous Metallurgy,
Central South University of Technology, Changsha 410083）
Abstract:The leaching of pacific ocean nodule was conducted in dilute HCl by pyrite as reductant. Some factors, for example pyrite/nodules ratio in mass(R), initial HCl concentration, liquid to solid ratio(L/S), the temperature for leaching etc were investigated on the extractions of valuable metals Cu, Ni, Co, Mn & Fe contained in nodule. The results indicated that in the condition of R 0.3, C(HCl)1.5 mol/L, L/S 10∶1 and leaching at 90 ℃ for 90 min, the extraction ratios of Cu, Ni, Co, Mn and Fe were 95.77%, 93.80%, 96.80%, 89.09% and 49.06% respectively, whereas C (HCl) 1.0 mol/L and other conditions as above, the extraction ratios were 91.84%, 89.60%, 86.67%, 80.83% and 0.63%. The Si and Al contained in nodules existed in the residues instead of dissolution.
Key words: hydrometallurgy ocean nodule pyrite
