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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Impact of plait upgrade and DIMS on the processing capability of the Tati Nickel concentrator-a case study
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Impact of plait upgrade and DIMS on the processing capability of the Tati Nickel concentrator-a case study

机译：辫升级和DIMS对塔提镍选矿厂处理能力的影响-案例研究

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This paper describes DRA's involvement with the expansions at Tati Nickel, Phoenix Mine, that have taken an initial plant design of 3.6 Mtpa (originally built by Murray & Roberts), up to 5 Mtpa, and eventually 12 Mtpa capacity. Initially, the plant could not achieve the design nameplate capacity for the first few years of operation, as a consequence of the notoriously hard and abrasive nickel ore affecting primarily the operation of the crusher circuit. In order to extend the life of mine, Tati' assessed and then redefined the mining plan, choosing to increase the Phoenix mine reserves to a lower cut-off grade. In order to increase nickel units produced, the concentrator had to therefore treat additional tonnage at lower head grades. Site investigations and field tests around the comminution circuits are outlined, indicated that the milling circuit could be increased to 650 tph, from the initial design of 470 tph, for a similar feed grade and recovery. A project was initiated to debottleneck the crusher circuit and achieve the new target throughput. (Project 5M). This was followed by a feasibility study of the impact of pre-concentration by DMS, which after promising laboratory tests, was followed up with the installation of a 200 tph 'demonstration' plant. The success of this demonstration plant provided the impetus to expand the supply to the 5 Mtpa mill from a large preconcentration stage. A gyratory crusher (one of the largest and most powerful) will receive ore directly from the open pit operation, feeding into a secondary-tertiary crushing plant followed by a modular DMS preparation circuit. Four large DMS processing modules have been installed to treat the tonnage, with high expected rejection levels. Finally a review of the DMS process capability on an ostensibly disseminated micro-gabbro nickel ore is given, which shows the remarkable impact that preconcentration can have on an operation, both in terms of profitability and a successful process 'expansion'. The performance of the DMS plant has significantly extended the life of mine, allowing the mine to significantly reduce mine cut-off grades and curb its previously selective mining practice.
机译：本文介绍了DRA参与的凤凰城塔迪镍矿扩建项目，最初的工厂设计为3.6 Mtpa（最初由Murray＆Roberts建造），最高为5 Mtpa，最终容量为12 Mtpa。最初，由于臭名昭著的坚硬和磨蚀性镍矿石主要影响破碎机回路的运行，该工厂无法在最初的运行几年中达到设计铭牌的产能。为了延长矿山的寿命，塔蒂评估并重新定义了采矿计划，选择将菲尼克斯矿山的储量提高到较低的品位等级。为了增加镍产量，精矿厂因此不得不在较低的压头等级上处理更多的吨位。概述了粉碎回路周围的现场调查和现场测试，结果表明，从最初的470 tph设计开始，铣刨回路可以增加到650 tph，以获得相似的进料等级和回收率。启动了一个项目，以消除破碎机电路的瓶颈并实现新的目标产量。 （项目5M）。接下来是对DMS预浓缩的影响进行可行性研究的结果，该方法在经过有希望的实验室测试后，随后安装了200 tph的“示范”工厂。该示范工厂的成功为从大型预浓缩阶段向5 Mtpa工厂的供应提供了动力。回转破碎机（最大，功能最强大的破碎机之一）将直接从露天开采中接收矿石，然后送入二级三级破碎厂，然后再经过模块化DMS准备电路。已经安装了四个大型DMS处理模块来处理吨位，并具有很高的预期废品率。最后，对表面上分散的微粗粉镍矿的DMS工艺能力进行了回顾，从利润率和成功的工艺“扩展”方面来看，表明了预浓缩对运营的显着影响。 DMS工厂的性能显着延长了矿山的使用寿命，从而使矿山能够显着降低矿山的品位等级并遏制其先前的选择性采矿实践。

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