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Gold ore dressing and smelting combined recovery process

A combination of beneficiation and smelting technology, applied in the direction of process efficiency improvement, flotation, solid separation, etc., can solve the problems of single, single leaching, smelting and purification, difficult to achieve recovery rate and concentrate grade of minerals, etc., and achieve low process cost. , The effect of high product quality and high recovery rate

Active Publication Date: 2020-07-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, gold in ores mostly exists as independent minerals. Most of the current beneficiation recovery and enrichment processes use a single flotation, single leaching or single smelting purification. Most of these processes are relatively simple in the state of gold minerals in the ore, but As the mining of mineral resources gradually develops in the direction of lean and miscellaneous, it is difficult for many minerals to achieve a good recovery rate and concentrate grade through a single beneficiation method

Method used

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  • Gold ore dressing and smelting combined recovery process
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  • Gold ore dressing and smelting combined recovery process

Examples

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Embodiment 1

[0030] see figure 1 , figure 2 , a flotation process flow chart of a gold ore dressing and metallurgy combined recovery process, a gold ore beneficiation and metallurgy combined recovery process flow chart of a gold concentrate chemical pretreatment cyanide leaching process, a foreign gold mine, the grade of gold in the raw ore The grade of arsenic in the raw ore is 0.6%; the gangue minerals are mainly quartz, iron dolomite, chlorite, muscovite, albite; the embedded particle size of gold in the raw gold ore is 4-11 microns, and the Wrapped in pyrite, arsenopyrite, sulfide ore, and gangue minerals; the following process is used to recover gold, and the raw ore extracted from mining is crushed, and the crushing particle size is controlled at 10-15 mm; the crushed minerals are ground , the grinding fineness is controlled between 65%-90%; the grinding adopts two closed-circuit grinding processes; the concentration of the pulp after grinding is controlled between 33%-36%, adding ...

Embodiment 2

[0032] A gold mine in Yunnan, China, the grade of gold in the raw ore is 6%; the grade of arsenic in the raw ore is 0.7%; the gangue minerals are mainly quartz, anodolomite, chlorite, muscovite, albite; The embedded particle size is 4-11 microns, and the gold is wrapped in pyrite, arsenopyrite, sulfide ore, and gangue minerals; the following process is used to recover gold, and the raw ore extracted from mining is crushed, and the crushing particle size is controlled at 10- 15 mm; grind the crushed minerals, and the grinding fineness is controlled between 65% and 90%; the grinding adopts a two-stage closed-circuit grinding process; the concentration of the pulp after grinding is controlled at 33% -36% In between, add flotation agents, sodium hexametaphosphate 200-400g / t; copper sulfate 100-200g / t; isopropyl sodium xanthate 70-150g / t; black drug collector 20-50g / t; The flotation adopts the flotation closed-circuit process of three times of roughing, two times of sweeping and fo...

Embodiment 3

[0034] see figure 1 , image 3 , a flow chart of the flotation process for a combined recovery process of gold ore dressing and smelting, a process flow chart of the roasting and cyanidation leaching of gold concentrate for a combined recovery process of gold ore dressing and metallurgy, a domestic gold mine in Yunnan, the grade of gold in the raw ore is 6%; the grade of arsenic in the raw ore is 0.7%; the gangue minerals are mainly quartz, iron dolomite, chlorite, muscovite, and albite; In pyrite, arsenopyrite, sulfide, and gangue minerals; use the following process to recover gold, crush the raw ore extracted from mining, and control the crushing particle size at 10-15 mm; grind the crushed minerals, Grinding fineness is controlled between 65%-90%; grinding adopts two-stage closed-circuit grinding process; the concentration of pulp after grinding is controlled between 33%-36%, adding flotation reagents, sodium hexametaphosphate 200-400g / t; copper sulfate 100-200g / t; isopro...

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Abstract

The invention discloses a gold ore dressing and smelting combined recovery process. The gold ore dressing and smelting combined recovery process comprises the steps that gold-containing raw ore is subjected to crushing, ore grinding and flotation treatment, tailings enter a tailing pond, gold concentrate is pretreated, a pretreatment method can be one of chemical pretreatment, roasting pretreatment and biological oxidation treatment, and the pretreated gold concentrate is subjected to cyanide leaching treatment after the gold concentrate is pretreated to obtain high-grade gold-loaded carbon. According to the gold ore dressing and smelting combined recovery process, gold in the ore is recovered to the maximum extent at the minimum cost through crushing, ore grinding and flotation treatment,the most tailings with the extremely low gold grade are discarded, then the gold concentrate is pretreated, then the pretreated gold concentrate is subjected to cyaniding leaching treatment, the goldgrade is greatly improved, and meanwhile, the gold recovery rate is very high; and the gold ore dressing and smelting combined recovery process has the advantages that the process cost is low, the product grade is high, the recovery rate is high, and great economic benefits are achieved.

Description

technical field [0001] The invention belongs to a gold ore dressing and smelting process, and in particular relates to a gold ore dressing and smelting combined recovery process. Background technique [0002] With the decrease of easy-to-treat gold mines, refractory gold ores will become the main resource of gold ores in the future. Among the proven gold reserves in my country, about 30% of gold ores are refractory gold mines. How to better develop them Utilizing refractory gold mines has become one of the main tasks of the gold industry. [0003] At present, gold in ores mostly exists as independent minerals. Most of the current beneficiation recovery and enrichment processes use a single flotation, single leaching or single smelting purification. Most of these processes are relatively simple in the state of gold minerals in the ore, but As the mining of mineral resources gradually develops in the direction of lean and miscellaneous, it is difficult to achieve a good recove...

Claims

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Application Information

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IPC IPC(8): C22B11/08C22B1/02C22B3/18B02C21/00B03D1/018B03D101/02B03D103/02
CPCC22B11/08C22B1/02C22B3/18B02C21/00B03D1/018B03D2201/02B03D2203/02Y02P10/20
Inventor 刘阅兵
Owner KUNMING UNIV OF SCI & TECH
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