Performance evaluation of ball mill and shaking tables at Rahman hydraulic tin Sdn. Bhd.
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Date
2019-07
Authors
Siti Hamidah Binti Noorhakimi
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Abstract
Aiming to enhance the production and recovery of cassiterite concentrate from Rahman Hydraulic Tin Sdn Bhd, ball mill and shaking table has been used in processing line to produce fine particles from the coarse feed. The performance of ball mill and shaking table during the recovery of a mineral is very important. Therefore, the performance of the equipment’s was evaluated to help optimize the processing equipment. The optical microscope, mineral liberation analysis, grain size distribution and mineral association assessment were carried out on sample obtained from ball mill and shaking table. The optical microscope, mineral liberation analysis, grain size distribution and mineral association assessment were carried out. Tinning test were conducted to determine the cassiterite particles respectively. For the first part, after the interparticle breakage, the breaking behavior of the sample material was studied and described in terms of particle size distribution. The latter was evaluated by using the stereo zoom microscope Kunoh Robo to observe the liberation of the valuable minerals. The characteristics of liberation and fracture caused by compressive grinding was analysed. In addition, recommendations will also be detailed in relation to the processing of the ore and possible problems that should be avoided during its use or its own processing. Results show that the liberation of ore occurs at coarser size (<850 μm). Moreover, the valuable minerals were also found in tailings in relatively coarser size (<600 μm) which indicated that the gravity concentration were less efficient in treating coarser size minerals.