从硫精矿中浮选回收铅锌混合精矿的试验研究及工业应用
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摘要
云南某高硫铅锌矿选矿厂硫精矿含铅、锌较高,铅、锌主要分别赋存在方铅矿和闪锌矿中;硫精矿中方铅矿、闪锌矿的粒度分别以微粒、细粒为主,且多为连生体,但闪锌矿的单体解离度相对较好。为综合回收该硫精矿中的铅、锌金属,以石灰为黄铁矿抑制剂、硫酸铜为闪锌矿活化剂及DF-341为捕收剂,经1次粗选、2次扫选—粗精矿再磨后4次精选的工艺流程,粗精矿再磨细度-45μm占92%,获得了产率为3.16%、铅锌品位之和为54.96%的铅锌混合精矿。基于推荐的工艺流程,优化确定了合理的选矿工艺并选择了先进适用的选矿设备,建设了700 t/d再选车间投入生产使用,取得了较好的效益。
The sulfur concentrate of a certain high sulfur lead-zinc mine in Yunnan province contains lead and zinc, they mainly exist in galena and sphalerite. The size of sphalerite is fine, and the size of galena is finer, they are mainly composed of a large number of rich aggregate, but the dissociation degree of sphalerite is relatively better. Experimental studies were carried out, that take lime inhibit pyrite, cupric activate sphalerite, DF-341 for collector, though once-roughing twice-scavenging and fourth-cleanings after that of rough concentrate regrinding was recommend, the fineness of regrinding is-45 μm 92%, the Pb-Zn mixed concentrate was got and the sum of lead and zinc grade is 54.96%, yield is 3.16%. Based on the recommended process, a 700 t/d mill plant was built, adopting advanced and applicable equipment after optimizing the reasonable processing technology, and good benefits have been achieved.
The sulfur concentrate of a certain high sulfur lead-zinc mine in Yunnan province contains lead and zinc, they mainly exist in galena and sphalerite. The size of sphalerite is fine, and the size of galena is finer, they are mainly composed of a large number of rich aggregate, but the dissociation degree of sphalerite is relatively better. Experimental studies were carried out, that take lime inhibit pyrite, cupric activate sphalerite, DF-341 for collector, though once-roughing twice-scavenging and fourth-cleanings after that of rough concentrate regrinding was recommend, the fineness of regrinding is-45 μm 92%, the Pb-Zn mixed concentrate was got and the sum of lead and zinc grade is 54.96%, yield is 3.16%. Based on the recommended process, a 700 t/d mill plant was built, adopting advanced and applicable equipment after optimizing the reasonable processing technology, and good benefits have been achieved.
引文
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[2] 刘侦德.凡口矿选矿技术创新发展四十年[J].有色金属工程,2008,60(2):85-91.
[3] 窦洪伟,魏盛甲.锡铁山铅锌矿选矿技术进展评述[J].金属矿山,2005(3):31-33.
[4] 倪章元,曾建喜.黄沙坪铅锌矿选矿工艺改造生产实践[J].矿产保护与利用,2003(2) :31-34.
[5] 周怡玫,官长平,汤小军.综合回收硫精矿中铅锌银选矿工艺研究[J].有色金属(选矿部分),2012(4):33-36.
[6] 徐月冰.硫精矿中铅锌铜综合回收利用工艺[D].湘潭:湘潭大学,2015.
[7] 韦会福,蒙玉彬.含锌锡硫精矿综合利用试验[J].矿产综合利用,2015(6):67-70.
[8] 敖顺福,吉学文,胡彬,等.某高硫铅锌矿生产指标提升实践[J].有色金属(选矿部分),2016(1):19-22.
[9] 敖顺福.同一矿集区不同铅锌矿山选矿工艺对比分析[J].矿山机械,2018,46(1):39-45.
[10] 全国有色金属标准化技术委员会.硫精矿:YS/T 337-2009[S].北京:中国标准出版社,2009.
[11] 张国旺,肖骁,肖守孝,等.搅拌磨在难处理金属矿细磨中的应用[J].金属矿山,2010(12):86-89.
[12] 陈国荣.贵州丫他金矿选矿工艺设计[J].有色金属工程,2015,5(1):63-68.