Abstract

Multi-gravity separator (MGS) is a very effective separator for very fine-sized minerals. In this study, for the first time in the literature, the concentrability of a typical barite plant fines (tailing) was investigated by using an MGS. For this purpose, the effects of different operating parameters such as the solids ratio of feed pulp, the rotational drum speed, the wash water flow rate, and the tilt angle were studied in detail. Additionally, multiple linear regression (MLR) analyses were performed to understand the effect of operating parameters on the separator (MGS) performance for barite tailings, and the equations were developed to predict the recovery and the grade of barite concentrate fraction. As a result of experiments, a barite concentrate from the barite tailing containing 38.40% BaSO₄ was obtained with 92.55% BaSO₄ grade and a total barite recovery of 78.41%. MLR studies also showed that there were good correlations between the experimental results and predicted values (R² values of 0.928 and 0.853 for the recovery and grade of barite concentrate, respectively). Based on the results obtained from this study, it can be concluded that while the solids ratio of feed pulp showed an important effect on the BaSO₄ grade, the tilt angle had an effect on the recovery of the barite concentrate.

摘要

多重力分离器 ( MGS ) 是一种非常有效的分离器，适用于非常细小的矿物。在这项研究中，首次在文献中使用MGS研究了典型重晶石植物细粉（尾矿）的浓度。为此，详细研究了不同操作参数的影响，例如进料浆的固含量、滚筒转速、洗涤水流速和倾斜角。此外，还进行了多元线性回归 ( MLR ) 分析以了解操作参数对分离器 ( MGS) 的影响) 重晶石尾矿的性能，并开发了公式来预测重晶石精矿部分的回收率和品位。作为实验的结果，从重晶石尾矿中获得了含有 38.40% BaSO ₄的重晶石精矿，BaSO ₄品位为 92.55% ，总重晶石回收率为 78.41%。MLR研究还表明，实验结果与预测值之间存在良好的相关性（重晶石精矿的回收率和品位的R ²值分别为0.928和0.853）。根据本研究的结果，可以得出结论，虽然进料浆的固含量对 BaSO ₄ 品位，倾斜角对重晶石精矿的回收率有影响。