(1. 中南大學(xué) 地球科學(xué)與信息物理學(xué)院，長(zhǎng)沙 410083；
2. 中南大學(xué) 有色金屬成礦預(yù)測(cè)教育部重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083；
3. 中南大學(xué) 冶金科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 以氰化尾渣衍生物為原料，制備標(biāo)準(zhǔn)鉛、鋅精礦。采用X體系在常壓下進(jìn)行氧化浸出，研究浸出電位、氧化劑、總酸量、試劑A、試劑B、浸出時(shí)間和浸出溫度對(duì)鋅回收率、鋅精礦品位以及鉛浸出率的影響。結(jié)果表明：采用二段浸鉛與氣液固強(qiáng)化浸出相結(jié)合的方法在高效氣液固反應(yīng)器中進(jìn)行實(shí)驗(yàn)，其最優(yōu)條件如下：試劑A量15.6 g/L，試劑B量90 g/L，液固比L/S=10:1，鼓氧量1.5 L/min，浸出溫度70 ℃，每段浸出時(shí)間均為3 h。所得鉛精礦和鋅精礦氧量品位分別高達(dá)75.49%和45%，副產(chǎn)品硫磺的品位達(dá)到99%，其中，鉛、鋅總回收率分別為90.68%和99%，單質(zhì)硫的回收率高達(dá)99.1%。
關(guān)鍵字: 氰化尾渣衍生物；氧化浸出；鉛精礦；鋅精礦
（1. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Centr）
Abstract:The standard lead and zinc concentrate were prepared from cyanide tailings derivatives. By using X system in the atmospheric pressure for oxidize leaching, the influences of leaching potential, antioxidants, total acid amount, reagent A, reagent B, leaching time and leaching temperature on zinc recovery rate, zinc concentrate grade and lead leaching rate were studied. The results show that the experiments are performed in the high efficient gas-liquid-solid reaction tank combining the methods of two-section lead leaching and gas-liquid-solid intensification leaching. The optimal conditions are as follows: reagent A 15.6 g/L, reagent B 90 g/L, liquid-solid ratio L/S=10:1, drummed O2 speed 1.5 L/min, temperature 70 ℃, leaching time 3 h for each section. Eventually, the grades of lead and zinc concentrate obtained are 75.49% and 45%, respectively, with sulfur grade of up to 99% as the by-product. Moreover, the total recovery rates of lead and zinc are 90.68% and 99%, respectively, and the recovery rate of elemental sulfur is 99.1%.
Key words: cyanide tailings derivatives; oxidation leaching; lead concentrate; zinc concentrate
