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Lead-sulfur mixed flotation method

A technology of mixed flotation and lead-zinc ore, applied in flotation, solid separation, etc., can solve the problems of poor flotation effect of lead-sulfur concentrate

Pending Publication Date: 2022-01-14
深圳市中金岭南有色金属股份有限公司凡口铅锌矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a lead-sulfur mixed flotation method, aiming to solve the problem of poor flotation effect of lead-sulfur concentrate in the prior art

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The pretreatment step of the raw ore, pretreatment includes crushing and grinding the lead-zinc ore, so that the weight ratio of the lead-zinc ore particle size less than 0.074mm is greater than 85%. In order to improve the contact between the lead-zinc ore and the flotation agent To increase the recovery rate of raw ore, it is necessary to crush and grind the raw ore. In addition, the relationship between the grinding time and the particle size of the raw ore has been studied. When there is no grinding at the beginning, the grinding machine used in the experiment is a ball mill. The equipment model: QC36-4TA, Specifications: 240*90, parameters: ball weight 7.5KG, when the grinding time is more than 7 minutes, the weight ratio of the lead-zinc ore particle size less than 0.074mm can be greater than 85%.

[0046] figure 1 A flow chart of a lead-sulfur mixed flotation method is provided, including the following steps: the first roughing step: select 800g of raw ore, prepa...

Embodiment 2 to Embodiment 5

[0049] Embodiment 2 to embodiment 5 are compared with embodiment 1, adopt same rough selection method, and difference is, add butyl xanthate and ethiazide in the second slurry or add butyl xanthate in the 5th slurry In the process with ethion, the weight ratio of butyl xanthate and ethion is different, wherein, please refer to Table 1 for details.

[0050] Table 1 The test results of lead-sulfur mixed floating collector ratio

[0051]

[0052] In view of the difference in selectivity and collection ability between dixanthate and ethylthiazide, a ratio test of the two collectors was carried out in an attempt to find the optimal ratio. In the test of the lead-sulfur mixed floating collector, the distribution of the floatation amount in the two roughings was unreasonable. Therefore, in this test, the amount of the roughing collector was increased from 80g / t to 100g / t, and at the same time The amount of blowing agent was reduced based on experience. According to the test resu...

Embodiment 6 to Embodiment 9

[0059] Embodiment 6 to embodiment 9 are compared with embodiment 1, adopt same roughing method, and difference is, the zinc sulfate that adds in the first slurry, the 4th slurry and the amount of sodium carbonate are different, wherein, detailed Please refer to Table 3 for the situation.

[0060] Table 3 Test results of lead-sulfur mixed floating zinc inhibitors

[0061]

[0062]

[0063] Among them, the conventional zinc sulfate and its combination inhibitors were selected as the zinc inhibitor. The results showed that when zinc monosulfate was selected as the inhibitor, the inhibitory effect was not much different when the dosage was 600g / t and 1000g / t; when the combination inhibitor was selected, not only zinc The recovery rate of lead and sulfur is lower, and the recovery rate of lead and sulfur is higher than that of zinc sulfate single inhibitor. Therefore, the combined effect of combined inhibitor is better than that of single inhibitor. From the data, it can be ...

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Abstract

The invention relates to the technical field of flotation, and provides a lead-sulfur mixed flotation method which comprises the following steps: preparing lead-zinc ore into first slurry; adding an inhibitor into the first slurry and carrying out first mixing treatment to obtain second slurry; adding a capturing agent into the second slurry and carrying out second mixing treatment to obtain third slurry; and adding a foaming agent into the third slurry, carrying out third mixing treatment, and thus obtaining lead-sulfur mixed floats and tailings. According to the lead-sulfur mixed flotation method provided by the invention, the inhibitor is added into the first slurry, zinc concentrate in lead-zinc ore is inhibited from floating out, the purpose of preferential mixed flotation of the lead-sulfur bulk concentrate is achieved, accordingly, the second slurry is obtained, the capturing agent is added into the second slurry, the hydrophobicity of the surface of the lead-sulfur bulk concentrate can be changed, and accordingly the third slurry is obtained; and the foaming agent is added into the third slurry, stable foam is generated to store the lead-sulfur bulk concentrate, and then the task of mixed flotation of the lead-sulfur bulk concentrate is completed.

Description

technical field [0001] The application belongs to the technical field of flotation, and in particular relates to a lead-sulfur mixed flotation method. Background technique [0002] Lead-zinc ore is a mineral rich in metal elements lead and zinc. Lead-zinc is widely used in electrical industry, machinery industry, military industry, metallurgical industry, chemical industry, light industry and pharmaceutical industry. In addition, lead metal also has many uses in nuclear industry, petroleum industry and other sectors. Lead is one of the earliest metals extracted by humans from lead-zinc ores. [0003] At present, flotation beneficiation is one of the most important processes in beneficiation application, and it is widely used. Lead-zinc deposits often have sulfide ores, sulfide-oxidation mixed ores, and oxide ores at the same time. With the continuous increase in the demand for non-ferrous metals in my country, there are fewer and fewer high-quality lead-zinc ores available...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02
CPCB03D1/02B03D1/028
Inventor 方振鹏罗开贤张康生刘运财张艳汤德益江皇义张幼权车维维冯雪兰
Owner 深圳市中金岭南有色金属股份有限公司凡口铅锌矿
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