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Beneficiating process for increasing recovery rate of aurum in tailings of aurum

A beneficiation method and a recovery rate technology are applied in the field of beneficiation to improve the gold recovery rate in gold tailings, and can solve the problems of high cost, serious environmental pollution, and low gold recovery rate, and achieve low production cost, wide process adaptability, The effect of high recovery rate

Inactive Publication Date: 2008-12-31
ZIJIN MINING GROUP
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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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  • Beneficiating process for increasing recovery rate of aurum in tailings of aurum
  • Beneficiating process for increasing recovery rate of aurum in tailings of aurum

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Embodiment Construction

[0024] Such as 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 gold beneficiation tailings and apply beneficiation agents, including the following sequential process steps:

[0025] a. Ore crushing, crushing the raw ore;

[0026] b. Grinding, add gold dressing tailings to the broken raw ore according to the ratio of 1:1 to 3 of raw ore and gold dressing tailings, and grind to -0.074mm, 60~76% fineness;

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

[0028] d. Concentration, adding 20-100 g / t of sodium silicate to the crude concentrate obtained from the rough selection for concentrating, and selecting the gold concentrate.

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

[0030] a. S...

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Abstract

The invention relates to a beneficiation method for increasing the gold recovery rate in gold tailings, which takes raw ore as a carrier for connecting gold concentrator tailings and being applied with a reagent for beneficiation, and the method sequentially comprises the following processing steps of: a. ore crushing, namely crushing the raw ore; b. ore grinding, gold concentrator tailings are added into the crushed raw ore for being ground together to the fineness of -0.074mm and 60 to 76 percent, by a ratio of 1:1-3 between the raw ore and gold concentrator tailings; c. roughing, the ground mixed ore is added with 20 to 100g / t of butyl xanthate, 1 to 30g / t of ammonium butyl aerofloat and 5 to 20g / t of No.2 oil for roughing; and d. concentrating, the rough concentrate is added with 20 to 100g / t of sodium silicate for concentrating and selecting gold concentrates. The beneficiation method has advantages of broad process adaptability, simple flow, easy operation, non pollution, environmental protection, low production cost and high recovery rate.

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 the grade is low. Coupled with the aging of the mineral processing 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 relatively low. It can still reach 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, etc. The cyanidation method includes direct cyanidation and pretreatment-cyanidation; the gravity separation method generally uses a chute and a shaker. Flotation generally adopts direct flotation of tailings or flotation after regrinding. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B11/00
CPCY02P10/20
Inventor 邹来昌廖德华孙忠梅吴双敲黄丽娟
Owner ZIJIN MINING GROUP
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