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Method for recovering antimony and gold from low-grade gold-containing antimony sulfide ores

A low-grade antimony sulfide ore technology, applied in the field of antimony gold recovery from low-grade gold-bearing antimony sulfide ore, can solve the problems of no industrial production value, high processing cost, low gold recovery rate, etc., and achieve the value of popularization and application High efficiency, simple process and high direct yield

Inactive Publication Date: 2019-01-15
锡矿山闪星锑业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only suitable for the treatment of gold-bearing antimony ores with high antimony content and low gold content. Once the antimony ore with low antimony content and high gold content is processed, either the processing cost is high or the recovery rate of gold is low.
[0005] CN108359814A discloses a method for smelting antimony-gold ore in an oxygen-enriched molten pool, which is an "oxidation-reduction-blowing" triple furnace process for smelting antimony-gold ore in an oxygen-enriched molten pool. However, this method is suitable for those with high antimony content. Gold-containing antimony ore, when the antimony content is less than 20%, because the cost is too high, this method has no industrial production value
However, due to the high processing cost, this method is not suitable for gold-bearing antimony ores with low antimony content.

Method used

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  • Method for recovering antimony and gold from low-grade gold-containing antimony sulfide ores
  • Method for recovering antimony and gold from low-grade gold-containing antimony sulfide ores

Examples

Experimental program
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Effect test

Embodiment 1

[0038] After crushing 300g of low-grade gold-bearing antimony sulfide ore to 60 mesh, add 27.37g of soda ash, 90.8g of iron ore, 75.0g of reduced coal and 120.0g of flux (NaCl / KCl=3:1), mix well and set In a muffle furnace, heated and melted at 1100°C for 110 minutes, then poured into a cast iron mold, allowed to stand for 60 minutes for layering, slagging, and ingot casting to obtain an antimony gold alloy.

Embodiment 2

[0040] After crushing 300g of low-grade gold-bearing antimony sulfide ore to 70 mesh, mix 10.0g of soda ash, 75.0g of iron ore, 90.0g of reduced coal and 30.0g of flux NaCl, mix them evenly, and place them in a muffle furnace at 1050 After heating and melting reaction at ℃ for 120min, pour it into a cast iron mold, let it stand for 100min for stratification, remove slag and cast ingot to obtain antimony gold alloy.

Embodiment 3

[0042] After crushing 300kg of low-grade gold-bearing antimony sulfide ore to 80 mesh, mix with 40.0kg of soda ash, 105.0kg of iron ore, 105.0kg of reduced coal and 60.0kg of flux KCl, mix well, and place in a muffle furnace at 1200 After heating and melting for 90 minutes at ℃, pour it into a cast iron mold, let it stand for 80 minutes for layering, remove slag, and cast an ingot to obtain an antimony gold alloy.

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Abstract

The invention provides a method for recovering antimony and gold from low-grade gold-containing antimony sulfide ores. After the low-grade gold-containing antimony sulfide ores are crushed, sodium carbonate, iron ore, reducing coal and cosolvents are added; uniform mixing is performed; after heating melting reaction, still standing for layering, drossing and ingot casting are performed to obtain antimony and gold alloy. The method provided by the invention is suitable for being used for treating the low-grade gold-containing antimony sulfide ores; the direct recovery rate of antimony and goldare high, and are respectively as high as 95.88 percent and 97.37 percent, much higher than that of the existing wet method process and a blast blowing furnace pyrogenic method process. The method provided by the invention has the advantages that the technical process is simple; the cost is low; the materials are in a molten state; the contents of volatilized antimony and arsenic are low; the quantity of the sulphur-containing waste gas is small; the treatment is easy; the popularization and application values are high; the method is suitable for industrialized production.

Description

Technical field [0001] The invention relates to a method for recovering antimony gold, in particular to a method for recovering antimony gold from low-grade gold-containing antimony sulfide ore. Background technique [0002] The gold-antimony symbiosis mineral resources are distributed in Hunan, Jiangxi, Gansu, Qinghai, Tibet, Guangxi and other places in my country. However, this kind of ores is mostly associated with arsenopyrite, that is, iron sulphur arsenide minerals, and the gold in the ore is mainly related to metal Sulfides are closely related. Therefore, most of the gold antimony particles are embedded in antimonite and arsenopyrite. At present, blast furnace volatilization smelting is generally used to recover gold-containing antimony sulfide ore containing more than 30% antimony. Although this method is based on antimony's better ability to capture gold, most of the antimony will be antimony oxide during the blast furnace volatilization smelting process. The powder form...

Claims

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Application Information

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IPC IPC(8): C22B5/10C22B11/00C22B30/02
CPCC22B5/10C22B11/02C22B30/02
Inventor 刘鹊鸣廖光荣单桃云邓卫华
Owner 锡矿山闪星锑业有限责任公司