SHAKING TABLE GRAVITY CONCENTRATION PROCESS STUDY ON PRIMARY TIN ORE OF SKARN TYPE FROM BATUBESI, BANGKA BELITUNG
Tin is one of the metals that is widely used in daily life or industrially. Generally, tin is obtained from secondary tin ores that have high tin content. The reserves and resources of secondary tin ore have been depleted so that it is necessary to process primary tin ore which is another source...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/72215 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Tin is one of the metals that is widely used in daily life or industrially. Generally,
tin is obtained from secondary tin ores that have high tin content. The reserves
and resources of secondary tin ore have been depleted so that it is necessary to
process primary tin ore which is another source of tin metal. In this research, the
processing of primary tin ore from Batubesi, Belitung by shaking table
concentration method was conducted. Gravity concentration process with shaking
table device is varied based on operation variables.
A series of gravity concentration process experiments using a shaking table were
conducted to study the effect of particle feed size (-149 +105?m, -105 +75?m, -75
+38?m, -38?m), wash water flow rate (1L/min, 3L/min, 6L/min, 9L/min), shaking
table deck slope (1.5?, 2?, 2.5?, 3?), and feed solids percent (4%, 7%, 10%, 13%)
on the results of the concentration process. Primary tin ore was first subjected to
sample preparation with the aim of meeting the needs of the study. Each product
of the concentration process was then analyzed using X-ray Fluorescence (XRF).
Then mineralagraphic analysis was carried out using an Optical Microscope.
Experiments were conducted with variations in feed size first with other variables
set accordingly based on existing research. The variation that gives the best results
will be set as a fixed variable in the next variable experiment.
The highest percent Sn recovery of 76.25% was obtained from the experiment
with a feed size of -75 +38?m, a wash water flow rate of 9L/min, a rocking table
deck inclination of 1.5?, and 4% solids. The highest increase in tin content in the
concentrate was obtained in experiments with different variables. The highest Sn
content with a value of 3.13% Sn was obtained in experiments with a feed size
fraction of -75 + 38?m, a water flow rate of 9L/min, a shaking table deck slope of
1.5?, and a solids percent of 4%. Each variable studied has a different influence on
the recovery and tin content of the concentrate. At coarse particle feed sizes the
gain tends to increase, but the tin content decreases. Increasing the degree of
inclination of the shaking table deck from 1.5? to 3? showed an increase in the tin
content of the concentrate while decreasing the tin recovery value. The slow water
flow rate make the tin recovery decrease. The optimal results in this study were
obtained in experiments with variables in the form of -75 +38-, the water flow rate
of 9L/min, rocking table deck inclination of 1.5?, and percent solids of 4% with
Sn recovery of 31, 76% and Sn content of 3.13%. |
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