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Considering hydrocyclone operation for tailings dewatering purpose and its effects on product specifications of paste backfill operations
Minerals Engineering ( IF 4.8 ) Pub Date : 2021-09-12 , DOI: 10.1016/j.mineng.2021.107176
Nurettin Alper Toprak 1 , Okay Altun 1
Affiliation  

Tailings management is challenging and important task especially for the plants that are considering to utilize them. Cemented paste backfill (CPB) can be counted as one of them where the opportunities regarding to economy improvement exist. Within the CPB application, dewatering of the product is of crucial importance where thickeners are mostly preferred. However, alternative solutions should also be considered to improve the solid concentration, throughput and maybe the product specifications. The aim of this study was to improve the knowledge regarding to the use of dewatering cyclone in copper concentration plant. In this operation, the tailings are initially sent to thickener and then mixed with cement-water mixture prior to its use in the underground mining. Data collection aimed at testing of varied cyclone geometries to define the limits of the laboratory unit. Afterwards, the modelling studies were performed for a given geometry and scaling up was completed to suggest pilot scale unit. Initial studies were followed by the pilot scale trials where the product properties such as strength and viscosity were considered. As a result of the study, cyclone application was found to improve the strength of CPB material with reduced cement consumption and reduced viscosity in comparison to that of the thickening process.



中文翻译:

考虑尾矿脱水的旋流器作业及其对膏体回填作业产品规格的影响

尾矿管理是一项具有挑战性和重要的任务,特别是对于正在考虑利用它们的工厂。水泥浆回填 (CPB) 可以算作其中之一,其中存在改善经济的机会。在 CPB 应用中,产品的脱水至关重要,其中增稠剂是最受青睐的。但是,还应考虑替代解决方案以提高固体浓度、产量和产品规格。本研究的目的是提高有关在铜选矿厂使用脱水旋流器的知识。在此操作中,尾矿最初被送到浓缩机,然后在用于地下采矿之前与水泥水混合物混合。数据收集旨在测试各种旋风几何形状以定义实验室单元的限制。之后,对给定的几何形状进行建模研究,并完成放大以建议中试规模的单位。初步研究之后是中试规模试验,其中考虑了产品特性,如强度和粘度。研究结果表明,与稠化工艺相比,旋风分离器的应用可以提高 CPB 材料的强度,同时减少水泥消耗和粘度。

更新日期:2021-09-12
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