(中南大學(xué) 冶金科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 針對(duì)電解錳陽(yáng)極渣難處理、鉛含量高的缺點(diǎn)，提出利用桔子皮作還原劑在硫酸體系中還原浸出電解錳陽(yáng)極渣工藝。以國(guó)內(nèi)某電解錳廠陽(yáng)極渣為原料，對(duì)桔子皮加入量、浸出時(shí)間、浸出溫度以及硫酸加入量等工藝參數(shù)進(jìn)行探討和優(yōu)化。結(jié)果表明：在浸出溫度為80 ℃，時(shí)間為2 h，固液比為1:4，桔子皮/錳陽(yáng)極渣質(zhì)量比為1:5，酸渣質(zhì)量比為1.2:1的條件下，錳的浸出率可達(dá)96%，鉛的浸出率僅為0.2%，有效地實(shí)現(xiàn)了鉛錳分離。實(shí)驗(yàn)證明，在硫酸體系中利用桔子皮作還原劑浸出電解錳陽(yáng)極渣的方法可行。
關(guān)鍵字: 電解錳陽(yáng)極渣；桔子皮；還原浸出
（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China）
Abstract:Orange peel was used as reductant for reductive leaching of manganese anode slag, which was featured by intractable treatment and lead-rich, and sulfuric acid was used as leaching solvent. By using manganese anode slag from electrolytic manganese plant as raw materials, the effects of dosage of orange peel and sulfuric acid, leaching time and temperature on the leaching ratio were studied. The results show that the leaching recovery of Mn reaches 96%, while the leaching recovery of Pb is only 0.2% under the conditions of leaching temperature 80 ℃, leaching time 2h, the ratio of solid to liquid 1:4, the mass ratio of orange peel to slag 1:5 and the mass ratio of acid to material 1.2:1. The experiment proves that extracting manganese from anode slag in sulfuric acid using the orange peel as reductant is highly effective.
Key words: manganese anode slag; orange peel; reductive leaching
