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Method for gold separation by means of removing antimony

A technology for removing antimony and selecting gold, which is applied in the fields of mineral processing and gold and antimony recovery by wet metallurgy technology, can solve problems such as waste of gold and antimony resources, and achieve the effect of simplifying process conditions and fully utilizing thermal energy

Inactive Publication Date: 2013-07-17
XINGMIN TECH ZHUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no cleaner production method with a higher recovery rate of gold and antimony, refractory gold and antimony ores have been treated with priority floating antimony or mixed separation of gold and antimony, resulting in a huge waste of gold and antimony resources

Method used

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  • Method for gold separation by means of removing antimony
  • Method for gold separation by means of removing antimony
  • Method for gold separation by means of removing antimony

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: A gold-antimony separation and smelting process that realizes antimony removal and gold separation

[0061] from figure 1It can be seen that the present invention is a gold antimony beneficiation and smelting process for realizing the deantimony gold separation method. The refractory gold antimony ore is treated by leaching and deantimony method, so that the antimony enters the liquid phase in the ionic state, and the gold remains in the crystalline state. Solid phase; solid-liquid separation of leached ore pulp to produce liquid phase and solid phase; liquid phase is treated by displacement and antimony precipitation method to make antimony change from ionic state to crystalline state; solid phase is treated by flotation method to make elemental gold And gold-loaded sulfide ore and gangue separation. The refractory gold-antimony ore at least includes elemental gold and gold-bearing minerals; the elemental gold includes visible gold and invisible gold; Su...

Embodiment 2

[0063] Example 2: A Displacement Antimony Precipitation Process for Realizing Antimony Removal, Gold Separation and Smelting Process

[0064] from figure 2 It can be seen that the present invention is a displacement antimony deposition process for realizing the deantimony gold separation method. To the liquid phase produced by the pulp after filtration and leaching, aluminum powder of -0.074mm and 100% is added to replace antimony deposition, and the output Antimony concentrate and filtrate after antimony precipitation.

[0065] Although the reaction rate of the replacement antimony precipitation process is faster in acidic environment, considering the direct recycling of the filtrate after antimony precipitation and the alkaline environment requirements of the leaching and deantimony process, it is especially necessary to inhibit the dissolution of arsenopyrite The ionic arsenic produces a large amount of arsine waste gas in the process of replacing antimony and depositin...

Embodiment 3

[0067] Example 3: An Ultrasonic Flotation Process for Realizing Deantimony Gold Separation and Smelting Process

[0068] from image 3 It can be seen that the present invention is an ultrasonic flotation process for realizing the deantimony gold separation method. After filtering and leaching the solid phase of the ore pulp output, water is added to adjust the slurry, and the output solid-liquid ratio is 1:2-2.5 after slurry adjustment. Ore pulp; Add a stage of roughing agent to the slurry after pulp adjustment, perform a stage of roughing pre-ultrasonic dispersion and a stage of roughing, and produce a coarse gold concentrate and a rough tailing; add a stage of sweeping agent to a rough tailings, One-stage sweeping pre-ultrasonic dispersion and one-stage sweeping, output one-stage gold concentrate and one-stage tailings; add second-stage sweeping agent to the first-stage tailings, and perform two-stage pre-sweep ultrasonic dispersion and two-stage sweeping, The output of E...

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Abstract

A method for gold separation by means of removing antimony is used for treating refractory gold and antimony ores by a leaching antimony removing process, so that the antimony in an ion state is turned into a liquid phase, and the gold in a crystalline state remains in a solid phase. The refractory gold and antimony ores at least comprise elementary gold and gold-carrying minerals; the elementary gold includes visible gold and invisible gold; the gold-carrying minerals at least include gold-carrying oxygenic salt minerals and gold-carrying sulfide minerals; the oxygenic salt minerals at least include carbonate minerals and silicate minerals; and the sulfide minerals at least include antimony glance and (or) iron pyrite and (or) arsenic pyrite. An antimony removing gold separation dressing and smelting technology for implementing the method for gold separation by means of removing the antimony is characterized by comprising 1), treating the refractory gold and antimony ores by the leaching antimony removing process so that the antimony in the ion state is turned into the liquid phase and the gold in the crystalline state remains in the solid phase; 2), performing solid and liquid separation for ore pulp obtained after leaching, and generating a liquid phase and a solid phase; 3), treating the liquid phase by a displacement antimony settling process so that the antimony is turned into a crystalline state from the ion state; and 4), treating the solid phase by a floatation process so that the elementary gold and the gold-carrying sulfite minerals are separated from gangues.

Description

Technical field [0001] The invention relates to a method for processing minerals by using wet separation and metallurgy technology, in particular to a method for recovering gold and antimony from refractory gold-antimony ore, which belongs to the technical field of wet separation and metallurgy. Background technique [0002] Refractory gold-antimony ore refers to a mineral that contains oxygen-containing salt ore, stibnite, pyrite, arsenopyrite, elemental gold, etc., and the sulfide ore has a finer particle size, and some gold occurs in the form of invisible gold. A gold antimony ore. At present, the flotation methods for recovering gold and antimony from refractory gold and antimony ores are mainly the preferential floating antimony method and the gold and antimony mixed separation method. The recovery effect of these two methods is not ideal. A gold-antimony ore in Zaozigou, Gansu Province, is a refractory gold-antimony ore, containing 4g / t gold and 0.45% antimony, using...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 曾兴民王世辉
Owner XINGMIN TECH ZHUZHOU
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