Mineral separation process capable of increasing gold recovery in gold tailings

A mineral processing method and technology of recovery rate, which is applied in the field of mineral processing to improve the recovery rate of gold in gold tailings, can solve the problems of low gold recovery rate, serious environmental pollution, high cost, etc., and achieve high recovery rate, wide process adaptability, and production low cost effect

Inactive Publication Date: 2008-12-31
ZIJIN MINING GROUP
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  • Application Information

AI Technical Summary

Problems solved by technology

The recovery of gold in gold tailings by cyanide method is high cost and serious environmental pollution; the recovery of gold in gold tailings by gravity separation and separate flotation of tailings is low in gold recovery rate

Method used

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  • Mineral separation process capable of increasing gold recovery in gold tailings
  • Mineral separation process capable of increasing gold recovery in gold tailings

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Embodiment Construction

[0024] like figure 1 As shown, a beneficiation method for improving the recovery rate of gold in gold tailings uses raw ore as a carrier to connect the gold beneficiation tailings and apply a beneficiation agent, including the following sequential process steps:

[0025] a. Crushing, crushing the original ore;

[0026] b. Grinding, adding the gold dressing tailings to the crushed raw ore at a ratio of 1:1 to 3 of the raw ore and the gold dressing tailings for grinding, and grinding to -0.074mm, 60 to 76% fineness;

[0027] c. Rough selection, adding 20~100g / t of butyl xanthate, 1~30g / t of butylammonium black medicine, and 5~20g / t of 2# oil to the ground mixed ore for rough selection;

[0028] d. Selecting, adding 20-100g / t of sodium silicate to the roughly selected coarse concentrate for selection, and selecting gold concentrate.

[0029] The beneficiation method for improving the gold recovery rate in the gold tailings of the present invention further comprises:

[0030] a...

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Abstract

The invention relates to a beneficiation method for improving the recovery ratio of gold in gold tailings, wherein, raw ore is chosen as a carrier, connected with gold tailings and is applied with a reagent for beneficiation. The method comprises the following process steps: a. ore crushing: the raw ore is crushed; b, grinding: the crushed raw ore is added with the gold tailings with the ratio of the raw ore to the gold tailings being 1:1-1:3 for grinding until the fineness of minus 0.074mm and 60-70% is obtained; c. roughly selecting: the finely ground mixed ore is added with 20-100g / t of butyl xanthogenate, 1-30g / t of ammonium butyl aerofloat and 5-20g / t of 2# oil for roughly selecting; d. cleaning: rough concentrate obtained from roughly selecting is added with 20-100g / t of sodium silicate for cleaning, thus selecting gold concentrate. The beneficiation method has the advantages of wide process versatility, simple flow, convenient operation, no pollution, being environment-friendly, low manufacturing cost, high recovery ratio, etc.

Description

1. Technical field [0001] The invention relates to a beneficiation method for improving the recovery rate of gold in gold tailings. 2. Background technology [0002] Most of the minerals in my country are associated with multiple components and have low grades. In addition to the old and aging beneficiation equipment, the recovery level of useful minerals is generally low, the development and utilization rate is not high, the loss and waste of resources are serious, and the gold grade of abandoned tailings is high. Still up to 1 ~ 6g / t. [0003] The existing technologies for recovering gold from gold tailings mainly include: cyanidation, flotation, gravity separation and gravity separation-flotation combined process. The cyanidation method includes direct cyanidation and pretreatment-cyanidation; the gravity separation method generally uses a chute and a shaking table. Flotation generally adopts direct flotation of tailings or flotation after regrinding. Using cyanidation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 邹来昌廖德华孙忠梅吴双桥黄丽娟
Owner ZIJIN MINING GROUP
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