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首页> 外文会议>International Conference on Industrial Engineering and Engineering Management >Application of Jig in Preconcentration of Cassiterite-bearing Multi-metal Sulfide Ore in Dachang Concentrator
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Application of Jig in Preconcentration of Cassiterite-bearing Multi-metal Sulfide Ore in Dachang Concentrator

机译：夹具在大厂选矿厂含锡金属多金属硫化矿预选中的应用

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Jig is a kind of conventional and old gravity concentration equipment, which is mainly used in the preconcentration of medium particle fractions of low-grade nonferrous metal ore. In the past ten years, studies on jigs have made a great progress on separation of coarse and fine particle fractions.At the same time, pneumatic jigs have been widely used in processing of nonferrous metal ore. In this paper, pilot test study and commercial operation for several kinds of jigs used in Dachang concentrator has been introduced.Dachang mining area of GuangXi province is rich in mineral resources, where many minerals exhibit various complex properties. Many elements such as Sn, Pb, Sb, Zn, S, As, Cu, In, Ag, Gd,Ag, Ga, etc, were found in the ran-of-mine ore (ROM). At present, Dachang concentrator produces tin concentrate, lead-antimony concentrate and zinc concentrate. Other valuable elements get enriched and recovered in above concentrates. Dachang Mine with a mining operation history more than sixty years will end its mission on the rich ore resource exploitation. At present, low grade ores are porcessed in the concentrator, and the concentrator begins to run at a loss upon processing the low-grade and refractory ore.Heavy medium cyclones were used in the concentrator for processing 20-4mm fraction, Gongge jigs for 4-2mm fraction, and cone concentrator combined with spiral concentrator to discard the tailings of -2mm fractions. In order to minimize overgrinding, table flotation was used to recover some liberated cassiterites in a complex processing technology. Therefore, the concentrator is difficult to manage. Many years studies have shown that heavy medium cyclones and spiral concentrators can be replaced by sawtooth shaped wave jigs to discard 50% tailings to improve the grade of feed. And the feed was divided into rich one and poor one to minimize overgrinding of valuable cassiterites with different grinding mills. In this case, the recovery of the valuable minerals can get improved and the flowshcet was simplified. Moreover, the concentrator begins to make profit with reduction of cost. At the same time, pollution in the concentrator gets reduced and the working condition gets improved too.Sawtooth shaped wave jig was used in Changpo concentrator for replacement of cone separators and spiral concentrators to discard the tailings of -4mm fraction, and the yield of discarded tailings got improved from 30% to 50%. Grades of tin, lead and zinc in the tailings are lowered from 0.15%,0.12%, 0.7% to 0.06%, 0.05%, 0.4% respectively, with a loss reduction of tin, lead and zinc from 11%, 9%, 10% to 7.5%, 6%, 5% respectively, corresponding to the increasement of recovery of tin, lead, zinc from 52%, 50%, 55% to 56%, 56%, 62% respectively. Cost of the concentrator for processing one-ton ROM was therefore dropped from RMBI55.28 to RMB119.74. Changpo concentrator lost RMB2.5 million in 2003, but it made a profit of RMB0.92 million in 2006 after the innovations.Batac jig was used in Tongkeng concentrator to discard the coarse tailings at 20-4mm, with a discarded yield of 35%, and the grades of valuable minerals got improved with a recovery above 95% for tin, lead-antimony and zinc.
机译：跳汰机是一种传统的，古老的重力选矿设备，主要用于低品位有色金属矿石中粒级分的预选。在过去的十年中，夹具的研究在粗颗粒和细颗粒的分离方面取得了很大的进展，与此同时，气动夹具已被广泛用于有色金属矿石的加工中。本文介绍了大厂选矿厂使用的几种夹具的中试研究和商业化运行。广西大厂矿区矿产资源丰富，许多矿物具有各种复杂的特性。在矿砂（ROM​​）中发现了许多元素，例如锡，铅，锑，锌，硫，砷，铜，铟，银，银，银，镓等。目前，大厂选矿厂生产锡精矿，铅锑精矿和锌精矿。其他有价值的元素在上述浓缩物中得到富集和回收。具有六十多年开采历史的大厂煤矿将结束其在富矿资源开采方面的使命。目前，选矿厂对低品位矿石进行处理，选矿厂对低品位和难处理矿石进行选矿后开始亏损运行，选矿厂采用重介质旋风分离器处理20-4mm颗粒，贡格夹具为4个。 -2mm馏分，并将锥形浓缩器与螺旋浓缩器结合使用以丢弃-2mm馏分的尾矿。为了最大程度地减少过度磨碎，在复杂的加工技术中，采用浮选法回收了一些释放出的锡石。因此，集中器难以管理。多年的研究表明，重型中型旋风分离器和螺旋选矿机可以用锯齿形波浪夹具代替，以丢弃50％的尾矿，从而提高饲料质量。饲料分为富一种和劣一种，以最大程度地减少不同研磨机对有价值的锡石的过度研磨。在这种情况下，可以提高有价值矿物的回收率，简化流程。此外，选矿厂开始通过降低成本来获利。同时，减少了选矿厂的污染，改善了工作条件。长坡选矿厂采用锯齿形波治夹具代替了锥选机和螺旋选矿机，弃掉了-4mm馏分的尾渣，废品率提高了。尾矿从30％改善到50％。尾矿中锡，铅和锌的等级分别从0.15％，0.12％，0.7％降低到0.06％，0.05％，0.4％，锡，铅和锌的损耗降低了11％，9％，10分别从％增加到7.5％，6％，5％，分别对应锡，铅，锌的回收率分别从52％，50％，55％增加到56％，56％，62％。因此，用于处理一吨ROM的选矿厂的成本从RMBI55.28降至RMB119.74。长埔选矿厂在2003年亏损250万元，但经过创新后2006年实现利润92万元;铜坑选矿厂使用巴塔克夹具弃掉20-4mm粗尾矿，弃渣率达35％ ，有价矿物的品位得到了改善，锡，铅锑和锌的回收率达到95％以上。

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