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High-clay polymetallic ore pulp thickening method

A technology of polymetallic ore and high clay, applied in the field of hydrometallurgy, can solve the problems of low production efficiency of thickeners and achieve the effect of increasing the settlement speed

Active Publication Date: 2021-05-07
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high concentration of the feed pulp, the problems of low production efficiency and high flocculant consumption of the thickener have not yet been solved.

Method used

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  • High-clay polymetallic ore pulp thickening method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A uranium-molybdenum polymetallic ore with high clay content has a clay mineral content of 30%. The raw ore enters the grinding system composed of ball mill-screw classifier after being crushed in three stages. After test optimization, adjust the ratio of steel balls in the ball mill to φ100:φ80:φ60:φ40=20%:25%:35%:20%, and the mass concentration of the grinding product obtained from the overflow of the spiral classifier is 35%, 0.180mm~ The proportion of 0.208mm mineral powder is 35%, and the proportion of -0.045mm mineral powder is 40%.

[0054] After grinding, the product slurry is transported by the slurry pump to the deep cone thickener for flocculation and thickening. The deep cone thickener is as follows: figure 1 shown. The prepared amphoteric flocculant FZ3802 solution has a concentration of 0.1%, and the added amount is measured as 20g / t ore. The first flocculant pipe 1 is inserted into the upper part of the central axis of the slurry feeding pipe 2 by 40 m...

Embodiment 2

[0057] For a weathered uranium-rare earth polymetallic ore, the raw ore is crushed in three stages and then enters the grinding system consisting of a ball mill and a spiral classifier. After test optimization, the ratio of steel balls in the ball mill is adjusted to φ100:φ80:φ60:φ40=20%:28%:34%:18%, and the mass concentration of the grinding product obtained from the overflow of the spiral classifier is 33%, 0.180mm~ The proportion of 0.208mm mineral powder is 40%, and the proportion of -0.045mm mineral powder is 34%.

[0058] After grinding, the product slurry is transported by the slurry pump to the deep cone thickener for flocculation and thickening. The first flocculant tube is the prepared amphoteric polyacrylamide flocculant WZ944 solution, the concentration is 0.1%, and the addition amount is 30g / t 矿 measure. The first flocculant pipe is inserted into the upper part of the pulp feeding pipe 30mm above the center, obliquely forward 15°. The flocculant in the first fl...

Embodiment 3

[0061] A high clay content uranium vanadium polymetallic ore, the content of clay minerals is 20%. The raw ore enters the grinding system composed of ball mill-screw classifier after being crushed in three stages. After test optimization, the ratio of steel balls in the ball mill is adjusted to φ100:φ80:φ60:φ40=20%:25%:35%:20%, and the mass concentration of the grinding product obtained from the overflow of the spiral classifier is 40%, 0.180mm~ The proportion of 0.208mm mineral powder is 42%, and the proportion of -0.045mm mineral powder is 30%.

[0062] After grinding, the product slurry is transported by the slurry pump to the deep cone thickener for flocculation and thickening. The first flocculant tube is the prepared amphoteric polyacrylamide flocculant FZ3802 solution, the concentration is 0.2%, and the amount added is 42g / t 矿 measure. The first flocculant pipe is inserted into the upper part of the pulp feeding pipe 40mm above the center, obliquely forward 25°. The...

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Abstract

The invention relates to the field of hydrometallurgy, in particular to a high-clay polymetallic ore pulp thickening method. The method comprises the steps that ore is subjected to ball milling treatment and then graded, and product ore pulp is obtained; the product ore pulp is mixed with a flocculating agent, and the fully flocculated ore pulp is settled to obtain a flocculating constituent and a supernatant liquid; the supernatant liquid flows back and is mixed with the product ore pulp and the flocculating agent; the flocculating constituent is extruded and dehydrated to obtain underflow with the solid mass fraction of 55%-60% and water; and the water overflows from a flocculation layer, enters the supernatant liquid under the filtering action of the flocculation layer and is returned for ball milling and grading, and part of the water is returned for being mixed with the product ore pulp and the flocculating agent. The flocculating settling speed of the ore pulp is increased, the consumption of the flocculating agent is reduced, the production capacity of a thickener is remarkably improved, the bottleneck technical problem restricting the production of the high-clay-content polymetallic ore is solved, and the purpose of "improving quality and efficiency" is achieved.

Description

technical field [0001] The invention relates to the field of hydrometallurgy, in particular to a method for thickening high-clay polymetallic ore slurry. Background technique [0002] With the continuous development of mineral resources, more and more refractory ore resources are used in production. The refractory ore includes ore with certain target minerals encapsulated, or ore with fine particle size and high clay content. To effectively decompose this type of ore, the degree of dissociation of minerals must be improved by grinding. After the raw ore is ground, the slurry is often separated from solid and liquid by filter equipment such as a filter press and a belt filter, so as to meet the slurry concentration requirements of the subsequent leaching process and reduce the amount of subsequent material and liquid treatment. Due to the finer slurry and high clay content after grinding, there are phenomena such as long filtration time and sticky filter cloth in the produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B3/04B03D3/06
CPCC22B1/00C22B3/04B03D3/06Y02P10/20
Inventor 刘会武苏学斌向秋林师留印刘康刘忠臣程浩王桂硕
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY