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A kind of rich gold beneficiation method of gold ore and gold waste rock

A beneficiation method and gold waste rock technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems that waste ore cannot be effectively used, reduce the amount of ore in sorting operations, and reduce the amount of grinding and classification. Achieve the effects of reducing the amount of ore in the sorting operation, reducing the discharge of tailings, and reducing the amount of grinding and classification

Active Publication Date: 2021-07-09
河南黄金产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that waste ore cannot be effectively utilized in the prior art, the present invention provides a gold-rich beneficiation method for gold ore and gold waste rock, which uses coarse crushing to carry out X-ray sorting, and combines screening particle size and reasonable separation The standard design can effectively improve the gold grade of the ore entering the grinding plant, reduce the amount of grinding and classification, reduce the amount of ore in the separation operation, and reduce the discharge of tailings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Gold Ore

[0019] A gold-rich mineral processing method for gold ore, comprising the following steps:

[0020] The first step: the gold ore is roughly crushed by a jaw crusher until the particle size is below 120mm to obtain coarse crushed stone; among them, the gold grade of the gold ore used is 3.25g / t, the silver grade is 5.63g / t, the sulfur grade is 2.03%, Copper grade 0.13%;

[0021] Step 2: Sieve the coarse crushed stone. The sieving equipment adopts a circular vibrating screen with a screen aperture of 30mm×30mm to obtain the first gold-rich ore with a particle size below 30mm and the ore to be separated with a particle size larger than 30mm;

[0022] The third step: the ore to be sorted enters the X-ray sorter, and the elements in the ore to be sorted are qualitatively and quantitatively analyzed according to the wavelength and intensity of the X-ray, and the waste rock and the second gold-rich ore are obtained after separation. The separation stand...

Embodiment 2

[0028] Example 2: Golden waste rock

[0029] A gold-rich mineral processing method for gold ore and gold waste rock, comprising the following steps:

[0030] Step 1: Coarsely crush the gold waste rock until the particle size is below 120mm to obtain coarse crushed stone; among them, the gold grade of the gold waste rock is 0.56g / t, the silver grade is 0.45g / t, the sulfur grade is 0.49%, and the copper grade is 0.07% .

[0031] The second step: sieve the coarse crushed stone to obtain the first gold-rich ore with a particle size below 30mm and the ore to be sorted with a particle size larger than 30mm;

[0032] The third step: the ore to be sorted enters the X-ray sorter, and the elements in the ore to be sorted are qualitatively and quantitatively analyzed according to the wavelength and intensity of the X-ray, and the waste rock and the second gold-rich ore are obtained after separation. The separation standard of the waste rocks mentioned above is: the grade of gold is les...

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PUM

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Abstract

The invention provides a gold-rich beneficiation method of gold ore and gold waste rock, comprising the following steps: the first step: coarsely crushing the waste ore until the maximum particle size is below 120 mm to obtain coarse crushed stone; the second step: crushing the coarse crushed stone Screening to obtain the first gold-rich ore with a particle size below 30mm and the ore to be sorted with a particle size larger than 30mm; the third step: the ore to be sorted enters the X-ray sorter, and is treated according to the wavelength and intensity of the X-ray The elements in the sorted ore are qualitatively and quantitatively analyzed, and the waste rock and the second gold-rich ore are obtained after separation; the fourth step: the first gold-rich ore and the second gold-rich ore are finely crushed to a particle size of less than 12mm, and the finely crushed products obtained are ground Ore classification; the fifth step: the obtained grinding and classification products are subjected to flotation to recover gold, and gold concentrate products and tailings are obtained by flotation. The invention can effectively improve the gold grade of the ore entering the grinding plant, reduce the amount of grinding and classification, reduce the amount of ore in sorting operations, and reduce the discharge of tailings.

Description

technical field [0001] The invention belongs to the technical field of gold ore and gold waste rock, and in particular relates to a gold-rich beneficiation method for gold ore and gold waste rock. Background technique [0002] With the large-scale industrial mining of gold ore resources, high-grade gold ore resources are decreasing day by day, and low-grade lean ore resources (hereinafter referred to as gold ore (waste) rocks) are piled up in large quantities. The grade of gold ore (waste) rock is 0.30~0.50g / t, the grade of silver is 1.00~5.00g / t, the grade of sulfur is 1.00~4.00%, the grade of iron is 3.00~6.00%, the grade of copper is 0.10~0.20%, the grade of silicon dioxide 50.00~60.00%. The main metal minerals in gold ore (waste) rock are a small amount of gold-bearing argentite and pyrrhotite, as well as trace amounts of chalcopyrite and sphalerite. The grades of gold, silver, and sulfur in gold ore (waste) rocks are low, and the cost of direct separation is too high....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B07C5/34B02C23/08B03D1/00
CPCB02C23/08B03B7/00B03D1/00B07C5/3416
Inventor 李建政王军强索天元郭晓雒彩军薛伟伟赵海飞邵淑云莫海辉
Owner 河南黄金产业技术研究院有限公司