铅银渣中铅矾浮选试验研究
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摘要
针对某冶炼厂铅银渣中铅品位17.55%的细粒级铅矾进行了浮选回收试验研究。结果表明,采用液固比为2 mL/g的清水对铅银渣清洗过滤两次,在浮选给矿浓度30%,pH调整剂氧化钙用量500 g/t、抑制剂硅酸钠用量2 000 g/t、捕收剂水杨羟肟酸用量1 500 g/t、起泡剂松醇油用量75 g/t,浮选时间4 min的条件下,经一粗一扫三精、中矿顺序返回的浮选闭路流程,获得了精矿铅品位47.18%、铅回收率76.39%,有效回收了铅银渣中的有价金属铅矾,为该铅银渣的有效利用提供了技术依据。
A flotation approach was adopted to reclaim fine anglesite grading 17.55% Pb from the Pb-Ag residue of a smelter. After washed twice in a suspension with a liquid-solid ratio of 2 mL/g, the residue was floated with the feed concentration of 30%, with the flotation time of 4 min, and the dosage for pH regulator CaO, depressant Na_2SiO_3, collector salicylhydroxamic acid, and frother terpenic oil at 500, 2 000, 1 500 and 75 g/t, respectively. Adopting a closed-circuit flowsheet consisting of one roughing, one scavenging and three cleaning operations, with the middlings reloaded in sequence, a concentrate grading with 47.18% Pb at 76.39% recovery was reclaimed. This approach can effectively recover valuable metals in anglesite, which provides a technical foundation for the utilization of this Pb-Ag residue.
A flotation approach was adopted to reclaim fine anglesite grading 17.55% Pb from the Pb-Ag residue of a smelter. After washed twice in a suspension with a liquid-solid ratio of 2 mL/g, the residue was floated with the feed concentration of 30%, with the flotation time of 4 min, and the dosage for pH regulator CaO, depressant Na_2SiO_3, collector salicylhydroxamic acid, and frother terpenic oil at 500, 2 000, 1 500 and 75 g/t, respectively. Adopting a closed-circuit flowsheet consisting of one roughing, one scavenging and three cleaning operations, with the middlings reloaded in sequence, a concentrate grading with 47.18% Pb at 76.39% recovery was reclaimed. This approach can effectively recover valuable metals in anglesite, which provides a technical foundation for the utilization of this Pb-Ag residue.
引文
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[3] 李华.浸出浮选联合法从锌渣中回收银[J].国外金属矿选矿,1996(8):22-24.
[4] 铅锌冶金学编委会.铅锌冶金学[M].北京:科学出版社,2003.
[5] 梁经冬.浮选理论与选冶实践[M].北京:冶金工业出版社,1995.
[6] 吴少林,钟玉凤,黄芃,等.锌渣的固化处理及浸出毒性试验研究[J].南昌航空大学学报(自然科学版),2007,21(2):67-71.
[7] Erdem M,?zverdi A.Environmental risk assessment and stabilization/solidification of zinc extraction residue:Ⅱ.Stabilization/solidification[J].Hydrometallurgy,2011,105(3-4):270-276.
[8] 李正明,张伟,窦传龙,等.湿法炼锌中铅银渣的处理回收工艺[J].云南冶金,2011,40(S):173-175.
[9] 王淀佐,邱冠周,胡岳华.资源加工学[M].北京:科学出版社,2005.
[10] 马永义,王毓华,卢东方,等.超声波预处理对不同体系中方铅矿浮选行为的影响[J].矿冶工程,2018,38(3):58-62.
[11] 甘恒,陈建华,李世凯.广西某铅锌矿酸性矿石浮选试验研究[J].矿冶工程,2017,37(4):41-44.