四川大顶山微细粒矽卡岩型铁锡矿选矿工艺研究
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摘要
锡是人类历史上应用最早的金属之一。由于锡的用途越来越广泛,世界对锡资源的需求量在不断增加。随着易采易选锡矿的不断萎缩,使得人们开始重视对难选锡资源进行开发和利用。我国有着大量矽卡岩型含锡的接触交代型铁矿或亲铁系列锡矿,对这种矽卡岩型锡矿资源进行综合开发利用对国民经济的发展具有十分重要的意义。
本文以四川省冕宁县大顶山铁锡矿典型矽卡岩型微细粒铁锡矿为研究对象,首先对其进行了工艺矿物学研究,工艺矿物学研究结果表明,该矿石中铁矿物以褐铁矿、磁铁矿为主,锡以锡石状态赋存,锡石嵌布特征较复杂且单体解离不完全。根据工艺矿物学研究结果,采用“阶段磨矿-磁选-摇床分级重选”主干工艺和“离心机富集-摇床精选”主干流程-0.037mm尾矿中的微细粒锡选矿工艺对该矿石进行了选矿工艺研究,在原矿锡品位0.64%、铁品位13.76%的情况下,其主干流程得到含锡41.08%、回收率为56.96%的锡精矿;含铁58.20%、回收率为11.41%的铁精矿;主干流程-0.037mm尾矿中锡细泥“离心机富集-摇床精选”回收工艺得到含锡38.50%,回收率为39.01%的锡精矿。采用“阶段磨矿-磁选-摇床分级重选”主干工艺流程及“离心机富集-摇床精选”微细粒级锡细泥工艺流程处理该铁锡矿,扩大性试验最终获得的锡精矿综合品位为40.63%,对原矿综合回收率为68.37%;获得的铁精矿铁品位57.92%,对原矿回收率10.18%,试验取得了较好的指标。
采用“阶段磨矿-磁选-摇床分级重选”主干流程及主干流程-0.037mm尾矿中微细粒锡“离心选矿机粗选-摇床精选”锡细泥选矿新工艺分选该铁锡矿,获得了理想的选矿指标,为该地区的铁锡矿的综合回收起到指导作用,并可对同类性质的矿石的生产有借鉴作用。
Tin is one of the first application metals in human history. As more and more extensive use of tin, in hare demand for tin resources becomes increasing in the world. With the dwindling of easy selection tin mining, People pay more attention on developing and utilizing tin mine which are difficult to select.There are a large number of tin-containing iron ore, or contact metasomatic iron series of tin in our country, Therefore, it is significant to develop the comprehensive tin mine for the development of national.
In this paper, the micro-granule skarn Iron-tin ore which is studied come from Dading Mountain in Mianning County of SiChun Province.And this is a kind of typical skarn Iron-Tin Ore.Here it starts with the research of technics mineralogy.The research showed that iron ore exist as limonite and magnetite and tin ore exist as cassiterite mainly. The embedded fabric size of cassiterite is fine,it is not easy to break with gangue minerals.According to the research of technics mineralogy,the research was done on the trunk flow of“stage grinding - Magnetic - classification shaker selection”and“centrifuge enrichment - Shaker Select”for -0.037mm fine grade of the trunk flow. As the ore contained 0.64% Sn、13.76 %Fe,then the tin concentrate which contained 41.08% Sn was received, and the recovery of Sn was 56.96%; the iron concentrate which contained 58.20% Fe was received, and the recovery of Fe was 11.41%.Research was done on“centrifuge enrichment - Shaker Select”for fine grade of the trunk flow to improve the recovery of tin concentrate widely. The tin concentrate which contained 38.50% Sn was received according to enrich by centrifuge and select by shaker, and the recovery of the Sn was 39.01%. By the trunk flow of“stage grinding - Magnetic - classification shaker selection”and the flow of“centrifuge enrichment - Shaker Select”, tin concentrate which contained 40.63% and 68.37% of recovery and iron concentrate which contained 57.92% and 10.18% of recovery were received by extended experiment at last.
Therefore, ideal indicator can be received by the trunk flow of“stage grinding - Magnetic - classification shaker selection”and the flow of“centrifuge enrichment - Shaker Select”.And it can be the reference and guide of the similar nature ore.
本文以四川省冕宁县大顶山铁锡矿典型矽卡岩型微细粒铁锡矿为研究对象,首先对其进行了工艺矿物学研究,工艺矿物学研究结果表明,该矿石中铁矿物以褐铁矿、磁铁矿为主,锡以锡石状态赋存,锡石嵌布特征较复杂且单体解离不完全。根据工艺矿物学研究结果,采用“阶段磨矿-磁选-摇床分级重选”主干工艺和“离心机富集-摇床精选”主干流程-0.037mm尾矿中的微细粒锡选矿工艺对该矿石进行了选矿工艺研究,在原矿锡品位0.64%、铁品位13.76%的情况下,其主干流程得到含锡41.08%、回收率为56.96%的锡精矿;含铁58.20%、回收率为11.41%的铁精矿;主干流程-0.037mm尾矿中锡细泥“离心机富集-摇床精选”回收工艺得到含锡38.50%,回收率为39.01%的锡精矿。采用“阶段磨矿-磁选-摇床分级重选”主干工艺流程及“离心机富集-摇床精选”微细粒级锡细泥工艺流程处理该铁锡矿,扩大性试验最终获得的锡精矿综合品位为40.63%,对原矿综合回收率为68.37%;获得的铁精矿铁品位57.92%,对原矿回收率10.18%,试验取得了较好的指标。
采用“阶段磨矿-磁选-摇床分级重选”主干流程及主干流程-0.037mm尾矿中微细粒锡“离心选矿机粗选-摇床精选”锡细泥选矿新工艺分选该铁锡矿,获得了理想的选矿指标,为该地区的铁锡矿的综合回收起到指导作用,并可对同类性质的矿石的生产有借鉴作用。
Tin is one of the first application metals in human history. As more and more extensive use of tin, in hare demand for tin resources becomes increasing in the world. With the dwindling of easy selection tin mining, People pay more attention on developing and utilizing tin mine which are difficult to select.There are a large number of tin-containing iron ore, or contact metasomatic iron series of tin in our country, Therefore, it is significant to develop the comprehensive tin mine for the development of national.
In this paper, the micro-granule skarn Iron-tin ore which is studied come from Dading Mountain in Mianning County of SiChun Province.And this is a kind of typical skarn Iron-Tin Ore.Here it starts with the research of technics mineralogy.The research showed that iron ore exist as limonite and magnetite and tin ore exist as cassiterite mainly. The embedded fabric size of cassiterite is fine,it is not easy to break with gangue minerals.According to the research of technics mineralogy,the research was done on the trunk flow of“stage grinding - Magnetic - classification shaker selection”and“centrifuge enrichment - Shaker Select”for -0.037mm fine grade of the trunk flow. As the ore contained 0.64% Sn、13.76 %Fe,then the tin concentrate which contained 41.08% Sn was received, and the recovery of Sn was 56.96%; the iron concentrate which contained 58.20% Fe was received, and the recovery of Fe was 11.41%.Research was done on“centrifuge enrichment - Shaker Select”for fine grade of the trunk flow to improve the recovery of tin concentrate widely. The tin concentrate which contained 38.50% Sn was received according to enrich by centrifuge and select by shaker, and the recovery of the Sn was 39.01%. By the trunk flow of“stage grinding - Magnetic - classification shaker selection”and the flow of“centrifuge enrichment - Shaker Select”, tin concentrate which contained 40.63% and 68.37% of recovery and iron concentrate which contained 57.92% and 10.18% of recovery were received by extended experiment at last.
Therefore, ideal indicator can be received by the trunk flow of“stage grinding - Magnetic - classification shaker selection”and the flow of“centrifuge enrichment - Shaker Select”.And it can be the reference and guide of the similar nature ore.
引文
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[4]兰兴华.锡的生产和应用.世界有色金属.2005(7):70-72
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[7]许志华.锡工艺矿物学.广东有色金属学报,1999(2):79-85
[8]中国矿产资源报告.北京:地质出版社.1999
[9]国土资源部规划司.矿产资源规划研究.北京:地质出版社,2001
[10]世界金属统计局.世界锡统计资料.北京:地质出版社.1997.9
[11]Roger G Taylor.锡矿山地质学.北京:地质出版社,1983,83-94
[12]李万青.我国锡工业现状及发展前景的若干问题.世界有色金属.2002(11):4-10
[13]国土资源部矿产开发管理司.中国矿产资源主要矿种开发利用水平与政策建议.北京:冶金工业出版社,2002
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[18]国土资源部信息中心.国外矿产资源勘查形势与发展.2001
[19]中国有色金属工业总公司北京矿产地质研究所主编.国外主要有色金属矿产.北京:冶金工业出版社,1987,365-367
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[22]国土资源部信息中心.世界矿产资源年评(2000-2001).北京:地质出版社,2002
[23]袁珠盈.浅析东南亚锡工业的发展.云南财贸学院学报.2003(4):14-15
[24]吴荣庆.我国锡矿综合利用水平有待提高.中国金属通报.2009(9):32-33
[25]王莉娟,岛崎英彦,王京彬等.黄岗梁矽卡岩型铁锡矿床成矿流体及成矿作用.中国科学(D辑).2001(7):553-562
[26]Yanjing Chen.Skarn Gold Deposits in China.Resource Geology.1996,46(6):369-376
[27]彼得·罗迪.世界锡贸易.中国锡联谊会,1999
[28]黄位森.锡.北京:冶金业出版社.2000
[29]黄皓.锡金属-基本面长期看好.中国金属通报.2008(22):12-15
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