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Method for improving flotation recovery rate

A technology of flotation recovery rate and process method, which is applied in the field of improving flotation recovery rate, and can solve problems such as large grinding energy consumption, over-grinding of target minerals, and influence on process, so as to improve flotation recovery rate and flotation recovery rate Improve and reduce the effect of grinding fineness

Active Publication Date: 2014-01-22
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the particle size of the target mineral embedding is relatively fine, the grinding energy consumption will be large and may lead to severe mudification of the pulp and over-grinding of some target minerals; if the target mineral embedding particle size is relatively coarse, it will affect the progress of the process; the sequence returns to the flow process It cannot adapt to the different requirements of different stages for the particle size of target minerals
[0011] 2) It is not conducive to improving the recovery rate of target minerals with slow planktonic velocity;
[0012] 3) It is not conducive to improving the recovery rate of target minerals with complex distribution characteristics;
[0013] 4) For some complex minerals, under this process, it is difficult to obtain the ideal flotation recovery rate only by adjusting the reagents

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0053] Applying the process method of the present invention, after grinding the same raw ore as that of Comparative Example 1 to -0.074mm and accounting for 60%, the copper concentrate 1 and the tailings 1 are produced through one roughing, two beneficiation, and four sweeping, Then combine the tank bottom product of the selection 1 and the foam product of the four times of sweeping to form a medium ore and thicken it to a weight concentration of 30%, then grind it to -0.035mm and account for 60%, and then pass the reground pulp through a coarse Sorting, one-time beneficiation, and one-time sweeping return to the technological process to obtain copper concentrate 2 and tailings 2, and finally combine copper concentrate 1 and copper concentrate 2 to obtain the final copper concentrate. The copper grade of the final copper concentrate is 18.92%, and the copper recovery rate is 89.23%.

[0054] Comparing Example 1 and Comparative Example 1, it is found that under the same raw mat...

Embodiment 2

[0058] Applying the process method of the present invention, after grinding the raw ore identical to that of Comparative Example 2 to -0.074mm and accounting for 50%, gold concentrate 1 and tailings 1 were produced through two roughings, three beneficiations, and eight sweepings. Then combine the tank bottom product of the selection 1 and the foam product of the eight times of sweeping to form a medium ore and thicken it to a weight concentration of 25%, then grind it to -0.038mm and account for 50%, and then pass the reground pulp through a coarse Sorting, double-sweeping, and twice-sweeping are returned to the technological process to obtain gold concentrate 2 and tailings 2, and finally gold concentrate 1 and gold concentrate 2 are combined to obtain the final gold concentrate. The gold grade of the final gold concentrate is 62.69g / t, and the gold recovery rate is 90.27%.

[0059] Comparing Example 2 and Comparative Example 2, it was found that under the same raw materials,...

Embodiment 3

[0063] Applying the process method of the present invention, after grinding the raw ore identical to that of Comparative Example 3 to -0.074mm and accounting for 65%, the lead concentrate 1 and tailings 1 are produced through one roughing, two beneficiation, and three sweeping, and then The tank bottom product of the selection 1 and the foam product of the third sweeping are combined to form a medium ore, which is thickened to a weight concentration of 45%, and then ground to -0.038mm to account for 80%, and then the reground pulp is passed through a roughing, One beneficiation and one scavenging return to the technological process in sequence to obtain lead concentrate 2 and tailings 2, and finally lead concentrate 1 and lead concentrate 2 are combined to obtain the final lead concentrate. The lead grade of the final lead concentrate is 58.84%, and the lead recovery rate is 95.35%.

[0064] Comparing Example 3 and Comparative Example 3, it is found that under the same raw mat...

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Abstract

The invention relates to a flotation method, in particular to a flotation method for improving the flotation recovery rate of a target mineral in a complex ore. The method comprises the following steps: grinding a target mineral in a raw ore until the target mineral is basically dissociated; producing a concentrate 1 and a tailing 1 through roughing one or twice, cleaning twice or three times, as well as scavenging three to ten times; combining a bottom product of the concentrate 1 and all scavenged foam products to form a middling; concentrating and grinding; returning the grinded ore pulp to a flotation process through an independent sequence to obtain a concentrate 2 and a tailing 2; and combining the concentrate 1 and the concentrate 2 to obtain a final concentrate. According to the flotation method in the invention, the grinding energy consumption can be effectively reduced, partial target mineral with low floating speed is recovered, and the flotation recovery rate of the target mineral is improved by 5 to 20 percent.

Description

technical field [0001] The invention relates to a flotation method, in particular to a method for improving the flotation recovery rate. Background technique [0002] With the rapid growth of the national economy, various domestic industries have achieved considerable development, such as the printed circuit board industry and the white goods industry, which have rapidly developed into important pillar industries in China. With the development of these industries, the demand for various metal raw materials is increasing year by year. Therefore, various ores are rapidly mined, and even ores that were considered to have no economic value in the industry before have been put on the agenda for development and utilization. [0003] In the separation of polymetallic ores, the flotation process is a widely used ore separation method. The ups and downs of minerals have almost nothing to do with mineral density, such as chalcopyrite and quartz, the former has a density of 4.2g / cm ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 贺政罗科华赵志强
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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