Substantiation and selection of the design parameters of the hydroficated equipment complex for obtaining backfill mixtures from current enrichment tailings

IF 2.4 Q2 MINING & MINERAL PROCESSING Journal of Mining Institute Pub Date : 2023-03-16 DOI:10.31897/pmi.2022.68
V. Alexandrov, A. Vatlina, P. Makharatkin
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Abstract

The issue of the influence of the concentration of the solid phase on the reduction of energy costs and specific energy consumption during pulp transportation is considered. The procedure for preparing slurry from the current enrichment tailings is shown. A scheme is given and the operation of a hydroficated unit for thickening and hydraulic transport of backfill mixtures is described. A diagram of the movement of solid particles in one of the units of the complex – a lamellar thickener is shown. The summary table shows the main design parameters and characteristics of the lamellar thickener. A general view of the laboratory setup used for experimental studies with slurry at various concentrations is given. An example of calculating productivity, density and specific load is presented. The dependence of the shear stress on the velocity gradient was determined for various pulp concentrations. Experimental studies of the process of thickening the production of slurry from the current enrichment tailings have been carried out. It was found that the geometric dimensions of the thickener depend on the concentration of the solid phase in the transported mixture. It is concluded that the flow rate of the slurry and the head loss are functions of the rheological characteristics of the viscoplastic slurry and can be calculated from the derived calculated dependencies.
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从当前富集尾矿中提取充填料的加氢设备组合设计参数的确定与选择
研究了浆料输送过程中固相浓度对降低能量成本和比能耗的影响。介绍了从当前富集尾矿中制备矿浆的工艺流程。给出了一种方案,并介绍了充填料加氢浓缩和水力输送装置的运行情况。图中显示了固体颗粒在复合单元之一-层状增稠器中的运动。汇总表给出了层状增稠机的主要设计参数和特点。给出了用于不同浓度浆料实验研究的实验室设置的一般视图。给出了计算生产率、密度和比荷载的实例。测定了不同矿浆浓度下剪切应力与速度梯度的关系。对当前尾矿浓缩制浆工艺进行了试验研究。研究发现,增稠器的几何尺寸取决于输送混合物中固相的浓度。结果表明,浆体的流量和水头损失是粘塑性浆体流变特性的函数,可以根据推导出的计算依赖关系进行计算。
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来源期刊
Journal of Mining Institute
Journal of Mining Institute MINING & MINERAL PROCESSING-
CiteScore
7.50
自引率
25.00%
发文量
62
审稿时长
8 weeks
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