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首页> 外文会议>Iron ore 2011 >The Eff ect of Seasonal Variations on the Performance of Mineral Processing Plants – A Case Study of Deposit-10/11A Mine of NMDC Ltd
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The Eff ect of Seasonal Variations on the Performance of Mineral Processing Plants – A Case Study of Deposit-10/11A Mine of NMDC Ltd

机译：季节变化对选矿厂性能的影响-以NMDC Ltd的10 / 11A矿床为例

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摘要

Deposit-10/11A is situated in the iron rich Bailadila region of India comprising haematite ore ofrnaverage grade 65 per cent Fe. The deposit production line was commissioned in the year 2002rnhaving a capacity of 5 Mt/a. The plant has the state of the art mineral processing equipments.rnThe ore is transported from mines to crushing plant by means of dumpers. The ore is comminutedrnin two stages to get 150 mm top size product and this product is transported through conveyorrnsystem and is stored in silos as feed stock for benefi ciation plant. In the benefi ciation plant thisrncrushed product is wet screened in two stages to produce a product of lump (-150 + 10 mm) andrnfi nes (-10 + 3.15 mm). The product of -3.15 mm top size is fed to primary classifi er for a sizernseparation at 150 μm. The resultant product (-3.15 mm + 150 μm) is dewatered and transported tornfi ne ore product stock yard through conveyor system. The minus 150 μm material from classifi errnoverfl ow is fed to cyclones (508 mm cyclone battery with an apex of 65 mm) for desliming at 45 μmrnand to recover ultrafi nes (-150 + 45 μm). The cyclone overfl ow slimes (-45 μm) along with waterrnis treated in lamella thickeners to recover process water. The thickener underfl ow material isrntransported to tailing pond (discharge rate is 300 m3/h at a specifi c gravity of 1.4) by pumpingrnthrough HDPE (high density poly ethylene) pipeline and the over fl ow water is being recirculated.rnThe water requirement for benefi ciation is approx 1.5 m3 per ton of ore.rnThis paper aims at identifying and quantifying the factors that affect the overall plant performancern(grade and recovery) during the different seasonal variations especially in the rainy seasonrn(mid-June to end October). The effect of seasonal variations on unit operations such as milling,rnclassifi cation, thickening and fi ltration are discussed. Specifi c cases are presented as examples andrnrecommendations are formulated.
机译：矿床10 / 11A位于印度铁矿富饶的拜拉迪拉地区，其中铁矿含量平均铁含量为65％。存款生产线于2002年投入生产，产能为5 Mt / a。该工厂拥有最先进的选矿设备。rn矿石通过倾卸机从矿山运输到破碎厂。将矿石分为两个阶段进行粉碎，以获得150 mm的最大规格产品，并将该产品通过输送机系统运输，并作为选矿厂的原料存储在筒仓中。在选矿厂中，将经过粉碎的产品分两个阶段进行湿筛，以生产块状（-150 + 10毫米）和颗粒状（-10 + 3.15毫米）的产品。将最大尺寸为-3.15 mm的产品送入初级分类器，以150μm的尺寸进行分离。将所得产品（-3.15 mm + 150μm）脱水，然后通过输送机系统将铁矿石产品堆场运输。来自分类溢流的负150微米材料被送入旋风分离器（508毫米旋流器电池，顶点为65毫米），以便在45微米处脱泥，并回收超细颗粒（-150 + 45微米）。旋流器溢流的粘液（-45μm）以及在薄层增稠剂中处理过的沃特尼斯（waterrnis）来回收工艺用水。通过HDPE（高密度聚乙烯）管道泵送，将增稠剂流下物料输送到尾矿池（比重为1.4时，排量为300 m3 / h），并使溢流水再循环。每吨矿石的养分含量约为1.5 m3。本文旨在确定和量化影响不同季节变化（特别是在雨季）（6月中旬至10月底）期间影响植物总体性能（等级和恢复）的因素。讨论了季节性变化对单位操作（如研磨，分级，增稠和过滤）的影响。本文以具体案例为例，并提出了建议。

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  • 来源
    《Iron ore 2011》|2011年|p.373-380|共8页
  • 会议地点 Perth(AU)
  • 作者

    S Das; T Anantharaman; T N S Kumar; P K Satpathy; S Bose;

  • 作者单位

    NMDC Ltd, Screening Plant – 10/11A, Bacheli Complex, NMDC Ltd, Chattisgargh 494553, India. Email: soumik.nit@gmail.com;

    NMDC Ltd, Screening Plant – 10/11A, Bacheli Complex, NMDC Ltd, Chattisgargh 494553, India. Email: tanantharaman@nmdc.co.in;

    NMDC Ltd, Administrative Offi ce, Bacheli Complex, NMDC Ltd, Chattisgargh 494553, India. Email: tnskumar@nmdc.co.in;

    NMDC Ltd, Administrative Offi ce, Bacheli Complex, NMDC Ltd, Chattisgargh 494553, India. Email: pksatpathy@nmdc.co.in;

    NMDC Ltd, Administrative Offi ce, Bacheli Complex, NMDC Ltd, Chattisgargh 494553, India. Email: sbose@nmdc.co.in;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
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