本文選題：鋅浸渣 + 硫酸鹽化焙燒��； 參考：《Transactions of Nonferrous Metals Society of China》2017年05期

【摘要】：鋅浸渣產(chǎn)生于傳統(tǒng)濕法煉鋅過(guò)程,它是一種危險(xiǎn)廢物同時(shí)也是一種潛在的有價(jià)固體廢物。用硫酸鹽化焙燒-水浸的組合工藝對(duì)鋅浸渣中有價(jià)金屬進(jìn)行回收。首先,鋅浸渣在640°C下與硫酸鐵進(jìn)行混合焙燒,硫酸鐵/鐵酸鋅摩爾比為1.2,硫酸鹽化焙燒時(shí)間為1 h。在此過(guò)程中,廢渣中的有價(jià)金屬轉(zhuǎn)化為可溶的硫酸鹽,而鐵以氧化鐵形式存在。隨后,采用水浸法提取有價(jià)金屬硫酸鹽,渣中鋅、錳、銅、鎘、鐵的回收率分別為92.4%、93.3%、99.3%,91.4%,1.1%。對(duì)水浸處理后的廢渣進(jìn)行浸出毒性檢測(cè)。結(jié)果表明,上述工藝可以有效地實(shí)現(xiàn)鋅浸渣的無(wú)害化處理,處理后各重金屬浸出毒性均低于限值。
[Abstract]:Zinc leaching residue is produced in the traditional process of zinc hydrometallurgy. It is a hazardous waste and a potential solid waste. The combined process of sulphuric acid roasting and water leaching is used to recover the valuable metals in the zinc leaching residue. First, zinc leaching residue is mixed with iron sulphate under 640 C, and the molar ratio of ferric sulfate to zinc ferrate is 1.2 and sulphate is sulphate. The calcination time is 1 h.. In this process, the valuable metal in the waste residue is converted to soluble sulfate, and iron exists in the form of iron oxide. Then, the metal sulfate is extracted by water leaching, and the recovery rate of zinc, manganese, copper, cadmium and iron in the slag is 92.4%, 93.3%, 99.3%, 91.4%, respectively. The leaching toxicity of the waste residue after water leaching is detected. The results show that the above process can effectively realize the harmless treatment of zinc leaching residue, and the leaching toxicity of heavy metals after treatment is lower than the limit value.
【作者單位】： 中南大學(xué)冶金與環(huán)境學(xué)院;長(zhǎng)沙賽恩斯環(huán)�？萍加邢薰�;中南大學(xué)國(guó)家重金屬污染防治工程技術(shù)研究中心;
【基金】：Project(2014FJ1011)supported by Key Project of Science and Technology of Hunan Province,China Project(201509050)supported by Program for Special Scientific Research Projects of National Public Welfare Industry
【分類號(hào)】：TF111.3;X758

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