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Beneficiation method for recycling zinc from lead-floating tailings

A mineral processing method and tailings technology, which is applied in flotation, solid separation, etc., can solve the problems of unstable comprehensive index of mineral processing and poor separation effect, and achieve the effect of ensuring flotation recovery rate and high-efficiency separation

Inactive Publication Date: 2018-05-01
WESTERN MINING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-efficiency, stable and adaptive The zinc flotation method with good distribution and optimized zinc concentration enables efficient and comprehensive utilization of complex lead-zinc ore resources containing strong reducing pyrrhotite type

Method used

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  • Beneficiation method for recycling zinc from lead-floating tailings

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Experimental program
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Effect test

Embodiment 1

[0020] A high pyrrhotite type complex lead-zinc sulfide ore in Inner Mongolia, the main metal minerals are galena, sphalerite and pyrrhotite, and the main gangue minerals are quartz, feldspar, muscovite, diopside, Tremolite, chlorite, epidote, calcite, etc., the multi-element results of the raw ore are shown in Table 1.

[0021] Table 1 Raw ore multi-element analysis unit g / t

[0022] element

Pb

Zn

Cu

Fe

S

As

C

content%

1.45

1.93

0.13

17.25

12.45

0.01

0.34

element

Au *

Ag *

CaO

MgO

Al 2 o 3

SiO 2

——

content%

0.18

21.32

4.82

2.51

9.32

39.07

—

[0023] The specific process is as follows:

[0024] (1) Perform zinc roughing on the lead-selected tailings, add lime to adjust the pH of the pulp to 10.5, and the concentration of the pulp to 38%, add copper sulfate at 300g / t, stir for 5min, and adjust the potential of the pulp to 220-280mV (rel...

Embodiment 2

[0033] A high pyrrhotite type complex lead-zinc-gold-silver sulfide polymetallic ore in Yunnan, the ore contains some carbonaceous, its main metal minerals are galena, sphalerite, pyrrhotite, part of sphalerite, mainly The gangue minerals are quartz, feldspar, calcite, etc. The multi-element results of the raw ore are shown in Table 2.

[0034] Table 2 Raw ore multi-element analysis unit g / t

[0035] element

Pb

Zn

Cu

Fe

S

As

C

content%

3.97

5.51

0.13

16.95

23.17

0.05

0.52

element

Au *

Ag *

CaO

MgO

Al 2 o 3

SiO 2

——

content%

0.52

90.62

1.42

1.73

4.13

23.84

—

[0036] The specific process is as follows:

[0037] (1) Perform zinc roughing on the lead-selected tailings, add lime to adjust the pulp pH to 11.0, pulp concentration to 40%, add copper sulfate to 400g / t, stir for 6min, and adjust the pulp potential to 220-280mV (relative to the ...

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Abstract

The invention discloses a beneficiation method for recycling zinc from lead-floating tailings. The beneficiation method is characterized in that a floating method of distributed activated zinc at a zinc concentration stage is adopted, an activating agent copper sulfate is supplemented during zinc concentration operation for distributed activated zinc floating, dosage of a collecting agent is reduced, environmental pollution is reduced, beneficiation cost is reduced, a zinc concentration off-slot phenomenon is avoided, pulp potential is regulated according to electrochemical behaviors of different minerals, and the grade and the relatively high recovery rate of zinc concentrate are guaranteed. Compared with the prior art, the beneficiation method has the advantages that: firstly, distributed activated zinc concentration operation is creatively disclosed, and electrochemical behaviors of different minerals are controlled, so that zinc blende or marmatite is efficiently separated from pyrrhotite; and copper sulfate is supplemented during zinc concentration operation for pyrrhotite with strong reducibility, so that pulp is guaranteed to have enough copper irons, and therefore, the floating recovery rate of zinc concentrate is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to a beneficiation method for recovering zinc from lead flotation tailings. Background technique [0002] pyrrhotite (Fe 1-x S) is a sulfur compound of iron that can coexist with a variety of minerals. It has three homogeneous polymorphic variants: monoclinic, hexagonal, and orthorhombic. The common ones are monoclinic and hexagonal pyrrhotite, and they have different crystal systems. The magnetism and buoyancy of pyrrhotite are quite different. In my country's lead-zinc sulfide ore resources, the distribution characteristics of useful minerals are complex, the separation effect of sphalerite and pyrrhotite is poor, and the separation indicators of most mines are not ideal. Especially for pyrrhotite with strong reducing properties, high content and complex structure, the zinc concentration operation is easy to "fall out of the tank". The traditional method is to add a co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D103/02
CPCB03D1/018B03D2201/007B03D2201/02B03D2203/02
Inventor 郭超华鱼高学黄建平唐谦毛富邦杨建军陶恒畅戴子林
Owner WESTERN MINING CO LTD
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