Sulfur concentrate concentration and dehydration process

Abstract

The invention provides a sulfur concentrate concentration and dehydration process. The process specifically comprises the following steps: conveying low-concentration sulfur concentrate into a concentration big well to perform primary concentration; conveying the sulfur concentrate after the primary concentration into a deep cone concentrator in a dripping manner to perform secondary concentration; conveying overflow produced by the deep cone concentrator back into the concentration big well; conveying the sulfur concentrate after the secondary concentration into a filter in the dripping manner to obtain a filter cake, namely sulfur concentrate after concentration and dehydration, wherein the overflow produced by the filter is also conveyed back to the concentration big well. Two-stage concentration is adopted, so the concentration efficiency of the sulfur concentrate is improved; the phenomena of overflow and mudflow of the concentration big well are effectively avoided, and the sulfur concentrate is prevented from entering a beneficiation process with circulating water so as not to cause exceeding of sulfur content of other products; foam is prevented from getting thicker with the progress of production to achieve a defoaming effect; the use of a flocculant is reduced and even eliminated and the concentration cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of mine metallurgy and specifically designs a sulfur concentrate concentration and dehydration process. Background technique [0002] In the beneficiation mine, sulfur concentrate is used as a product of the separation process. After concentration and dehydration, it can be sold to the sulfuric acid plant as a raw material for the production of sulfuric acid. Due to the characteristics of difficult sedimentation and difficult foaming of sulfur concentrate, there will be overflow and muddy phenomenon during the concentration process. The concentration of sulfur concentrate has always been a problem that plagues the concentrator. [0003] At present, high-efficiency deep cone concentrators are generally used for the concentration of sulfur concentrates. However, due to the addition of foaming agents during the flotation of sulfur concentrates, the sulfur concentrate slurry entering the concentrator contains a ...

AI Technical Summary

Problems solved by technology

Due to the characteristics of difficult sedimentation and difficult foaming of sulfur concentrate, there will be overflow and muddy phenomenon during the concentration process. Concentration of sulfur concentrate has always been a difficult problem for the concentrator.

[0003] At present, high-efficiency deep cone concentrators are generally used for the concentration of sulfur concentrates. However, due to the addition of foaming agents during the flotation of sulfur concentrates, the sulfur concentrate slurry entering the concentrator contains a large amount of foam. It is easy to break. After contact with the air, the foam breaks, but due to the support of the lower layer of foam, the broken foam cannot settle, causing the foam layer to accumulate thicker and thicker, and eventually the overflow will run muddy; and the overflow will be used as recycling water for the concentrator , after entering the beneficiation system, it will cause the sulfur content of other products to exceed the standard, and it will also cause the loss of sulfur resources

[0004] A lot of research has been done on the defoaming of sulfur concentrate at home and abroad, including adding defoamers, flocculants, and flotation residual reagent elimination technology, etc., but none of them have industrial applications, and increase the cost of concentration. Defoaming of sulfur concentrate is still a problem A Difficulty in Sulfur Concentrate Concentration

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