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- W3011898982 abstract "As mineral deposits become more complex, difficult to process and contain lower grades, extraction of resources require costly mining and processing of increasingly larger volumes of rock per tonne of product. The aim of pre-concentration is to remove barren material as early in the mining process and at as coarse a particle size as possible. This has the main objective of increasing production of metal and reducing processing costs and consequently improving profitability. In addition, pre-concentration may significantly reduce energy consumption, water losses and greenhouse gas emissions per tonne of product. It is cheaper and more eco-efficient to separate and reject the below cutoff grade material earlier in the process, rather than crushing, grinding and separating it through the processing plant. The sorter acts as a gatekeeper – only above cutoff grade material (value-adding) reports to the processing plant; no waste dilutes the feed. Several technologies may be applicable for pre-concentration, such as screening, gravity concentration and magnetic separation. In this paper, we look specifically at sensor based bulk ore sorting-the separation of gangue from a fully loaded conveyor belt based on the grade as measured or inferred from a sensor. The technical and economic viability of bulk ore sorting has been evaluated for the PanAust Phu Kham copper deposit and operation in Lao PDR. Ore sorting technology is described briefly along with discussion of appropriate sensor and diversion systems for the Phu Kham deposit and the economic implications have been evaluated. In the absence of sampling data, ore grade variability was estimated using geostatistical tools based on mine grade control data. The sorter performance was simulated to allow economic evaluations to be conducted for different scenarios. This demonstrated that bulk ore sorting has the potential to increase production and annual inferred cash flow for the Phu Kham operation." @default.
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- W3011898982 date "2016-01-01" @default.
- W3011898982 modified "2023-09-27" @default.
- W3011898982 title "Evaluation of bulk ore sorting for pre-concentration of copper ore at PanAust Phu Kham operation" @default.
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