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Technique for rewashing symbiosis mine tailing of copper and molybdenum

A technology for tailings and processes, which is applied in the field of copper-molybdenum symbiosis tailings reprocessing technology, can solve the problems of high tailings rate and backward beneficiation technology, and achieve the effect of improving the recovery rate.

Inactive Publication Date: 2008-06-11
邹平容诚金属科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper-molybdenum symbiotic ore is rich in rare metals and is an important mineral resource of the country, which is of great importance to the national economy and people's livelihood. However, due to the extensive development and production of copper mines in the past and the backward beneficiation technology, the tailings yield was too high

Method used

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  • Technique for rewashing symbiosis mine tailing of copper and molybdenum
  • Technique for rewashing symbiosis mine tailing of copper and molybdenum
  • Technique for rewashing symbiosis mine tailing of copper and molybdenum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Sample preparation: multi-point sampling to ensure the representativeness of the ore samples used in the test. Then mix and divide, and prepare 5000 parts with 500g / bag to ensure the standardization and uniformity of the condition test ore samples.

[0024] 2. Regrinding test: Firstly, whether regrinding is necessary, the tailings samples were screened and analyzed, and the results are shown in Table 2:

[0025] Table II:

[0026]

Particle size (m / m)

+1

-1+0.5

-0.5+

0.3

-0.3+

0.15

-0.15+

0.074

-0.074

copper metal distribution

Rate(%)

18.66

26.75

16.82

10.17

15.28

12.32

Molybdenum metal distribution

Rate(%)

20.05

23.23

18.76

13.18

16.83

7.92

[0027] It can be seen from the above table that ...

Embodiment 2

[0032] In the drug dosage test, we used an orthogonal test to determine the optimal dosage of various drugs. See Table 4 for the types and dosage of drugs.

[0033] Table four

[0034]

[0035] Because the tailings re-election is a secondary separation and needs to be re-grinded, a large amount of secondary ore sludge will be produced, and its existence will make the flotation index worse, such as: the recovery rate is reduced, the quality of the concentrate is deteriorated, and the reagent Consumption increases, flotation speed slows down, and dehydration processes such as sedimentation and filtration are affected. In order to prevent the above harmful consequences, after a large number of proportioning tests, sodium sulfide is adsorbed on the surface of slime particles, which increases the surface hydrophilicity and the resistance of mutual agglomeration , so as to prevent useful minerals and gangue fine mud from adhering to each other, which is conducive to improving the...

Embodiment 3

[0038] see process figure 1 , the results are shown in Table 5.

[0039] Table five

[0040]

[0041] From Table 5, the final determination process of this test process is the process flow of classification regrinding, first roughing, second sweeping, second refining, and medium ore return process.

[0042] The innovation and improvement of the technological process is summarized as follows: firstly, the test was carried out according to the ordinary beneficiation process mode. The process is first grinding and then grading, and finally enters the flotation. It adopts the process of grading first, then grinding, and then enters the flotation process, which avoids the phenomenon of slurry muddying and achieves a better flotation effect.

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Abstract

The invention relates to a comprehensive utilizing process of tailings, in particular to a re-selecting process of copper and molybdenum co-producing tailings. The purpose of the invention is that the re-selecting process of the copper and molybdenum co-producing tailings with high reclaiming efficiency can be provided. The comprehensive utilizing process comprises grading, grinding, mixing and a floatation process. The technological process of the invention comprises firstly, grading, then, grinding finely, mixing and floating. The beneficial effects of the invention are that a novel technological process of the tailings which comprises firstly, grading, then, grinding, and lastly, floating, and a novel flotation reagent are adopted, and thereby efficient re-claiming is available to the tailings. Metal contents in residual tailing sands of the tailings after re-selecting can reach: Cu 0.032%, Mo 0.0012%, Au 0.001g / ton and Ag less than 1g / ton, the grade of copper concentrate which is produced can reach 18%, the grade of molybdenum clean ore can reach 55%, and the recovery ratios of the copper and the molybdenum are increased by 8% and 6% respectively.

Description

technical field [0001] The invention relates to a tailings comprehensive utilization process, in particular to a copper-molybdenum symbiotic tailings re-selection process. Background technique [0002] Copper-molybdenum symbiotic ore is rich in rare metals, which is an important mineral resource of the country and is of great importance to the national economy and people's livelihood. However, due to the extensive development and production of copper mines in the past and the backward beneficiation technology, the tailings yield was too high. A large amount of tailings bring problems such as storage and the environment, and more importantly, waste a large amount of natural resources. According to the investigation and research of the inventor, the tailings probably contain Cu0.6%; Mo0.05%; Au0.3 grams / ton; Ag25 g / ton. [0003] The mineral resources we have become increasingly valuable due to their non-renewable nature. Due to the continuous rise of international and do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B5/62B03B1/00B03B1/04B03D1/004B03D1/002B03D101/02B03D101/06B03D101/04B03D103/04
Inventor 李信
Owner 邹平容诚金属科技集团有限公司
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