A method for improving gold recovery rate and beneficiation efficiency
A recovery rate and efficiency technology, applied in the field of improving gold recovery rate and mineral processing efficiency, can solve the problems of increasing production costs of enterprises, increasing the amount of gold leaching agents, and troubles in production organization and operation, so as to improve recovery efficiency, benefit recovery, The effect of improving the overall recovery rate
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Embodiment 1
[0040] The gold grade of an ore is 5.75g / t. The main metal minerals in the ore are pyrite, limonite, hematite, chalcopyrite, sphalerite and natural gold, and the non-metallic minerals are mainly quartz, feldspar, Chlorite and Kaolin. The particle size range of gold embedded cloth is wide, the minimum particle size is 0.005mm, the maximum particle size is 0.66mm, generally 0.02mm ~ 0.074mm, and the gold content of this particle size accounts for 63.94% of the total gold content.
[0041] Such as figure 1As shown, the raw ore enters the linear sieve with a sieve size of 3 mm after being ground by the first ball mill for sieving, and the over-sieve product above 3 mm returns to the first ball mill for regrinding, and the under-sieve product below 3 mm enters the sieve size of The 0.25mm vibrating screen is used for screening and grading, and the sieve products above 0.25mm are slurried to a pulp concentration of 60wt%, and then enter the first Nelson concentrator for gravity sep...
Embodiment 2
[0044] The gold grade of an ore is 8.30g / t. The main metal minerals in the ore are pyrite, chalcopyrite, galena, sphalerite, hematite and natural gold, and the non-metallic minerals are mainly quartz, feldspar and Sericite. The gold is dominated by fissure gold and intergranular gold, the proportion of gold wrapped in sulfide ore is 21%, and a small amount of gold is wrapped by quartz and feldspar. The gold particles are uneven in thickness, and the particle size is between 0.003mm and 0.38mm.
[0045] Such as figure 1 As shown, the raw ore enters the linear sieve with a sieve size of 2 mm for sieving and classification after being ground by the first ball mill, and the products above 2 mm are returned to the first ball mill for regrinding, and the products below 2 mm enter the sieve with a size of 0.1 mm vibrating screen for screening and grading, the sieve products above 0.1mm are pulped to a pulp concentration of 50wt%, and then enter the first Nelson concentrator for re-...
Embodiment 3
[0048] The gold grade of a certain ore is 3.50g / t. The main metal minerals in the ore are red limonite, pyrite, sphalerite, white leadite and natural gold, and the non-metallic minerals are mainly quartz, plagioclase, kaolin Stone and Dolomite. The thickness of gold embedded cloth particles is uneven, and the particle size is between 0.002mm and 0.55mm.
[0049] Such as figure 1 As shown, the raw ore enters the linear sieve with a sieve size of 2.5 mm after being ground by the first ball mill for sieving, the sieve product above 2.5 mm returns to the first ball mill for regrinding, and the under sieve product below 2.5 mm enters the sieve The vibrating screen with a hole size of 0.4mm is used for screening and classification, and the products above 0.4mm are slurried to a pulp concentration of 65wt%, and then enter the first Nelson concentrator for gravity separation. Slurry to the pulp concentration of 20wt%, enter the first shaking table for beneficiation, obtain coarse go...
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