CONCENTRATION GRAVITATION STUDY USING SHAKING TABLE ON PRIMARY TIN OXIDE TYPES FROM BATUBESI BELITUNG

• Main Author: Arzak, Fabian
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/72202
• Institution: Institut Teknologi Bandung

Depletion of secondary tin deposits in Indonesia encourages the utilization of primary tin deposits. There are two types of primary tin ore, namely skarn and oxide primary tin ores. Cassiterite in primary tin deposits is still associated with source rock so that it becomes a challenge in the concentration process. In this research, a study was carried out to study the effect of several variables in the process of gravity concentration of primary tin ore of the oxide type of ironstone from Batubesi on the grade and percent recovery of tin. Initial characteristics were carried out using X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) to determine the initial composition of the ore minerals. Furthermore, the primary tin ore was concentrated using a shaking table at variations in P80 feed size, namely 149,105,75, and 38µm, the rate of washing water, namely 1, 3, 6, 9 liters/minute, the slope of the table deck, namely 1,5?, 2 ?, 2.5? and 3?, and the percent solid feed, namely 4, 6, 8, 10%. Product results from the gravity concentration experiment were analyzed using XRF-Benchtop to see the tin content in each product. The optimum yield of the feed P80 size was used in the variable rate washer experiment. Likewise with the optimal results of the following variables Oxide type primary tin ore has an initial Sn content of 0.299%. In the rocking table experiment with variations in the size of the feed P80, there was a pattern of decreasing the percent of tin recovery and increasing the percent of tin content as the particle size decreased. P80 size of 105µm feed gave optimum results with a Sn content of 0.46% and a percentage of tin capture of 16.25%. The trend of decreasing percentage of tin recovery is in line with the increase in the level of washing water. As for the percent tin content, there was an increase and then a decrease towards. The washing water rate of 3L/m gave optimal results with a Sn content of 0.43% and a percent of tin recovery of 19.61%. There was a decrease in the percentage of tin recovery as the slope of the table deck increased. As for the percent tin content, there was a decrease from 1.5? to 2?, then increased to 3?. Table deck slope of 3? gives optimal results with a Sn content of 0.43% and a percent of tin recovery of 19.61%. The variation in percent solid feed did not change significantly between the existing variations. Percent of feed solids 6% gives optimum results with a Sn content of 0.43 percent and a percent of tin gain of 23.27%. The optimum variables obtained in this experiment were P80 size of 105µm feed, 3liter/minute washing water content, 3? table deck slope, and 6% solid bait with 0.43% Sn content and 23.27% tin recovery.