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Beneficiation of graphite fines form moulding factory wastes

机译:石墨细粉成型工厂废物的选矿

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摘要

As the costs of waste disposal increase, more attention is being placed upon the re-use and recycling of valuable minerals contained within the waste streams. In this article, the waste streams from a moulding factory were treated by physical methods to obtain a re-usable graphite fraction. Multi-gravity separators (MGS) and shaking tables (ST) are being used in coal processing and heavy minerals beneficiation. In the present study, the possibility of using an MGS and ST to separate graphite from moulding sand was analysed as part of such investigations. The effects of changes in different process variables on the concentrate sand content and graphite recovery values were studied. Several parameters, thought to have an effect on the separation were tested. After the ST experiments, a graphite concentrate was obtained having 4.5 percent sand content with 60.8 percent recovery. After the investigations carried out by MGS, a graphite concentrate was obtained having 0.95 percent sand content with 68.0 percent recovery. The results demonstrated that recovered graphite fractions can be re-used in the factory, thus reducing the quantity of waste and costs.
机译:随着废物处理成本的增加,人们越来越关注废物流中所含有价值矿物的再利用和回收。在本文中,通过物理方法处理了来自成型工厂的废料流,以获得可重复使用的石墨馏分。多重力分离器(MGS)和振动台(ST)被用于煤炭加工和重矿物选矿。在本研究中,作为此类研究的一部分,分析了使用MGS和ST从型砂中分离石墨的可能性。研究了不同工艺变量的变化对精矿砂含量和石墨回收率的影响。测试了一些认为会对分离产生影响的参数。在ST实验之后,获得了含砂量为4.5%,回收率为60.8%的石墨精矿。在MGS进行调查后,获得了含砂量为0.95%的石墨精矿,回收率为68.0%。结果表明,回收的石墨馏分可以在工厂中重复使用,从而减少了废物数量和成本。

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