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Beneficiation process for gold ores containing high arsenic and antimony content easily argillized minerals

A technology of mudification and mineralization, which is applied in the field of gold ore beneficiation technology, can solve the problems such as unfavorable gold recovery, achieve the effect of improving recovery rate, high recovery rate and reducing influencing factors

Inactive Publication Date: 2016-12-07
青海省地质矿产测试应用中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The beneficiation of gold ore with relatively simple ore composition is relatively mature at present, but when the gold ore contains elements arsenic and antimony that are harmful to gold recovery, and their content is high, it is not conducive to gold recovery

Method used

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  • Beneficiation process for gold ores containing high arsenic and antimony content easily argillized minerals
  • Beneficiation process for gold ores containing high arsenic and antimony content easily argillized minerals
  • Beneficiation process for gold ores containing high arsenic and antimony content easily argillized minerals

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Embodiment Construction

[0027] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0028] The raw ore sample was crushed and mixed, and then chemical samples were taken for analysis. The gold grade of the raw ore was 4.38g / t. The chemical composition of the ore is shown in Table 1.

[0029] Table 1 Analysis results of chemical composition of ore

[0030] Element

Au / g / t

Ag / g / t

S

As

Sb

Cu

Pb

Zn

content / %

4.38

0.20

0.97

0.42

0.49

0.0042

0.0070

0.014

Element

Fe 2 o 3

Al 2 o 3

SiO 2

K 2 o

Na 2 o

CaO

MgO

mn

content / %

4.58

15.25

57.21

2.71

0.36

6.63

2.13

0.056

Element

Ti

P

co

Cr

V

Rb

Sr

Ba

content / %

0.32

0.050

0.0013

0.0054

0.0066

0.016

0.038

0.030

[0031] It can be seen from Table 1 that the main recovery elem...

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Abstract

The invention relates to a beneficiation process for gold ores containing high arsenic and antimony content easily argillized minerals. By taking sodium carbonate as a flotation pulp regulator, water glass and sodium hexametaphosphate as an inhibitor and a dispersant for argillized minerals, copper sulfate as an activator for gold ores, pentyl xanthate and ammonium dibutyl dithiophosphate as a collecting agent for gold-bearing vulcanized minerals, sodium hydroxamate as a collecting agent for gold-bearing oxide minerals, and oil #2as a foaming agent, the process comprises the following steps: performing one stage grinding on raw ores; performing fast grading of one-stage roughing and one-stage concentrating on the ground minerals to obtain gold concentrate 1, and performing scavenging three times on the roughed tailings to obtain middlings; desliming the obtained middlings, and performing two-stage re-grinding on the deslimed pulp; and performing a strengthened collecting process of roughing at two times and concentrating at one time on the reground pulp to obtain gold concentrate 2. The process provided by the invention is high in recovery rate of the obtained gold concentrate, the affecting factors of the argillized minerals on gold grading are reduced, and through flow grading, the gold grade of obtained mixed gold concentrate is 52.84g / t and the gold recovery rate is 71.01%.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a mineral processing technology for gold ore containing high arsenic and antimony minerals which are easy to muddy. Background technique [0002] The beneficiation of gold ore with relatively simple ore composition is relatively mature at present, but when the gold ore contains elements arsenic and antimony that are harmful to gold recovery, and their content is high, it is not conducive to gold recovery. Moreover, when the gangue minerals are limonite, muscovite, biotite, kaolinite and other easy-mudging minerals, they have a great influence on the separation of gold. [0003] This kind of gold ore is ground into light slices and thin slices and then identified under a microscope. Natural gold can be seen in the ore. Metal minerals mainly include pyrite, arsenopyrite, limonite and stibnite, followed by a small amount of Pyrrhotite, marcasite, natural antimony, antimo...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/018B03D101/06B03D101/02B03D101/04B03D103/02
CPCB03B7/00B03D1/018B03D2201/005B03D2201/02B03D2201/04B03D2201/06B03D2203/025
Inventor 孙晓华熊馨赵玉卿刘氘应永朋常征朱琳鲁海妍张明
Owner 青海省地质矿产测试应用中心
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