(江西理工大學(xué) 材料與化學(xué)工程學(xué)院，贛州 341000)
摘 要: 研究了加壓浸出在高銅高砷煙灰浸出中的應(yīng)用。結(jié)果表明：高銅高砷煙灰加壓浸出較優(yōu)的工藝條件為，液固比(mL/g)為5׃1，初始硫酸濃度為0.74 mol/L，浸出溫度453 K，氧分壓0.7 MPa，浸出時(shí)間2 h，攪拌轉(zhuǎn)速500 r/min；在該條件下，Cu、Zn浸出率分別約95%和99%，As浸出率約20%，F(xiàn)e浸出率僅6%左右；Cu、Zn與As、Fe的分離效果較好，該浸出工藝運(yùn)行效果良好且穩(wěn)定。
關(guān)鍵字: 煉銅煙灰；加壓浸出；銅；砷
（School of Materials and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:he application of pressure leaching technology in the treatment of high-copper and high-arsenic smelter dust was studied. The results show that the optimal pressure leaching technique of copper smelter dust is determined as follows: the liquid to solid ratio (mL/g) of 5:1, the initial sulfuric acid concentration of 0.74 mol/L, the leaching temperature of 453 K, the oxygen partial pressure of 0.7 MPa, the agitation speed of 500 r/min. Under these conditions, the leaching rates of copper and zinc arrive at 95% and 99%, respectively, while those of arsenic and iron are approximately 20% and only 6%. Copper and zinc can be effectively separated from arsenic and iron in the leach. The pressure leaching technique of high-copper and high-arsenic smelter dust is further proved to be effective and stable.
Key words: copper smelter dust; pressure leaching; copper; arsenic
