STUDY OF GRAVITY CONCENTRATION USING SHAKING TABLE ON PRIMARY TIN ORE TYPES OF OXIDE CLAY FROM BATU BESI, BELITUNG
Tin consumption in the world is indeed increasing. According to International Tin Association data, consumption in 2018 increased by 2.5%. One of the developments carried out is to conduct land mining in the Batu Besi area, Belitung. The type of tin ore found in land mining has different characte...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/49095 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Tin consumption in the world is indeed increasing. According to International Tin
Association data, consumption in 2018 increased by 2.5%. One of the developments
carried out is to conduct land mining in the Batu Besi area, Belitung. The type of
tin ore found in land mining has different characteristics from the alluvial tin ore
that is usually processed. One of the ore types is oxide clay. In this study, gravity
concentration of oxide clay tin ore was carried out to determine the effect of feed
size fraction, initial treatment of magnetic concentration, and continued gravity
concentration of stage one and stage two middling.
Ore preparation is carried out by sifting to produce fractions of -50 +100#,
-100 +270#, and -270#. Gravity concentration is carried out with variations in feed
size (-50 +100#, -100 +270#, and -270#), variations in magnetic concentration
treatment (without magnetic concentration treatment, low intensity magnetic
concentration treatment, high intensity magnetic concentration treatment). Gravity
concentration is continued by processing middling stages one and two.
Optimal results in the fraction of the feed size -50 +100# with content of Sn 2.32%,
recovery of Sn 15.25%, and enrichment ratio of 4.68. Optimal results in treatment
of high intensity magnetic concentrations with content of Sn 3.04%, recovery of Sn
5.41%, and enrichment ratio of 3.84. Gravity concentration of middling stages one
and two for variations in feed size give the same optimal results in the feed size of
-50 + 100# with content of Sn 2.08% and 1.02%, recovery of Sn 13.49 % and
1.25%, and enrichment ratios of 4.16 and 1.86. Whereas for variations in magnetic
concentration treatment, the largest recovery of Sn in the first stage middling
processing is in the low intensity magnetic concentration pathway of 5.34%.
However, for content of Sn content and enrichment ratio, the greatest value
obtained in high intensity magnetic concentration is 3.26% and 4.17. Gravity
concentration middling stage two variations of the magnetic concentration
treatment gives optimal results in the treatment path of high intensity magnetic
concentration with content of Sn 3.19%, recovery of Sn 2.10%, and enrichment
ratio of 3.25. Gravity concentration carried out in three stages produced the highest
value of Sn percentage gain in the with a feed size of -50 + 100 # and without a
magnetic concentration treatment of 25.46%. As for the content of Sn and
enrichment ratio, the highest results obtained in the a feed size of -270 # and
treatment of high intensity magnetic concentrations of 3.11% and 6.89. |
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