relation: https://eprints.untirta.ac.id/47840/
title: EKSTRAKSI LOGAM TANAH JARANG DARI GRANIT BANGKA DENGAN METODE SULFATION ROASTING-WATER LEACHING
creator: ALFARIZI, MUHAMAD ALFI
subject: QD Chemistry
subject: T Technology (General)
subject: TN Mining engineering. Metallurgy
description: Bangka Island is included in the area passed by the granite tin belt. Rare Earth Metals (LTJ) were formed geologically along with the formation of tin deposits. The tin mineralization process in Southeast Asia is located around a granite belt that extends south from China, through Myanmar, Thailand, Peninsular Malaysia, and finally to the Indonesian Tin Belt. This pathway starts in the Riau Islands and ends in Bangka Belitung. According to the Regional Government Work Plan (RKPD) of the Bangka Belitung Islands Province in 2023 states that the potential of granite excavation material contained in the Bangka Belitung Islands Province in 2019 amounted to 528.5 million tons. According to the data bank of the Province of Bangka Belitung Islands in 2013 stated that the potential of excavated materials and the location of granite excavation materials in the southern bangka district during 2012 amounted to 49.5 billion m3. While the world's LTJ demand has increased by 1.5 times from 75,500 tons of LTJ in 2000 to 123,100 tons in 2016, the increase in demand for LTJ is expected to continue to increase until 2026. This shows that other potentials of granite need to be developed, one of which is by extracting valuable elements contained in granite, one of which is rare earth metals (LTJ).  LTJ is generally processed and extracted using conventional hydrometallurgical technology, this process does tend to get high LTJ, but many impurities are extracted. Therefore, the Sulfation Roasting and leaching process is an alternative process that is more selective and does not require high reagent consumption. Sulfation Roasting-water leaching process Before roasting, the best conditions are obtained, the granite sample is sulfated with the addition of sulfuric acid to convert the metal to be extracted into sulfate which will later dissolve in the water leaching process. The sulfation process is carried out by reacting granite samples and sulfation agents such as H2SO4, (NH4)2SO4, and Na2SO4, with S/L variations (1/1, 1/1.35, and 1/7), then roasting at 700oC with time variations for 5, 15, and 25 minutes. The leaching process was then continued using water. The water leaching process was carried out at temperature variations of 70, 80, and 90, solid/liquid (S/L) ratio of 1/20 for 2, 4, and 6 hours with a stirring speed of 300 rpm. The results showed that the sulfation agent H2SO4, is the best sulfation agent with the best conditions for extracting LTJ from bangka granite samples, namely at a S/L ratio of 1/1.35 for 15 minutes with a temperature of 700oC for Roasting. Then a temperature of 90oC for 4 hours with an S/L ratio of 1/20 and a stirring speed of 300 rpm for water leaching resulted in an extraction percent of 2.91% total LTJ, 3.25 light LTJ, and 1.98 heavy LTJ with extracted impurities of 1.57x10-5% Al, 0.38% Mn, 2.2% Fe, 0.01% K, 3.0x10-3% Ca, and 0.07% Ti. The results showed significant differences in LTJ recoveries compared to the literature references used. Nevertheless, this study can provide objective data related to the Sulfation Roasting-water leaching method from Bangka granite with a focus on impurity extraction and low reagent consumption.
date: 2024-03-13
type: Thesis
type: NonPeerReviewed
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identifier: https://eprints.untirta.ac.id/47840/1/Muhamad%20Alfi%20Alfarizi_3334200031_Fulltext.pdf
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identifier: https://eprints.untirta.ac.id/47840/2/Muhamad%20Alfi%20Alfarizi_3334200031_01.pdf
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identifier: https://eprints.untirta.ac.id/47840/6/Muhamad%20Alfi%20Alfarizi_3334200031_05..pdf
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identifier: https://eprints.untirta.ac.id/47840/7/Muhamad%20Alfi%20Alfarizi_3334200031_Ref..pdf
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identifier: https://eprints.untirta.ac.id/47840/8/Muhamad%20Alfi%20Alfarizi_3334200031_Lamp..pdf
identifier:   ALFARIZI, MUHAMAD ALFI  (2024) EKSTRAKSI LOGAM TANAH JARANG DARI GRANIT BANGKA DENGAN METODE SULFATION ROASTING-WATER LEACHING.  S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.