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

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

Inactive Publication Date: 2009-07-08
ZIJIN MINING GROUP
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  • Abstract
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  • Application Information

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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 gold recovery rate 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, according to the ratio of raw ore and gold tailings 1:1~3, add gold tailings to the broken raw ore and grind together 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. Sweeping 1, adding ...

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Abstract

The invention relates to a beneficiation method for increasing the gold recovery rate of a gold ore tailing. A greenore is used as a carrier to connect the selected gold ore tailing to which beneficiation reagents are applied. The beneficiation method comprises the following process steps in order: a. ore pulverization: the greenore is pulverized; b. ore grinding: according to the proportion of 1 to 3 of the greenore and the selected gold ore tailing, the mixture of the selected gold ore tailing and the pulverized greenore to which the selected gold ore tailing is added is ground until the degree of fineness is minus 0.074mm and 60 to 76 percent; c. rough selection: 20 to 100g / t of butyl xanthate, 1 to 30 g / t of dithiophosphate BA and 5 to 20 g / t of No.2 oil are added to the finely ground mixed ore, and the mixture obtained is processed by the operation of rougher flotation; and d. fine selection: the roughly selected rough concentrate is finely selected by being added with 20 to 100g / t of sodium silicate so as to obtain gold concentrate selection. The beneficiation method has the advantages of high suitability of the processes, easy procedure and operation, no pollution, environmental friendliness, low production 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 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): B03D1/00B03D1/01B03D1/004B03D1/002B03B1/00B03D103/02
CPCY02P10/20
Inventor 邹来昌廖德华孙忠梅吴双桥黄丽娟
Owner ZIJIN MINING GROUP
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