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A method of removing impurities from high-grade sulfur concentrate

A high-grade sulphur concentrate and sulphur concentrate technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of complex flotation process, low economic value, and sales, and simplify the flotation process. , The effect of simple pharmaceutical system and lower production cost

Active Publication Date: 2022-03-22
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Through the above analysis, the existing problems and defects of the prior art are: (1) the existing technical solutions all obtain salable or high-grade sulfur concentrates from various sulfide ores by means of mineral processing, and obtain products for them It is only sold as qualified sulfur concentrate, without considering how to effectively reduce the content of copper, lead and zinc impurities on the basis of increasing the sulfur grade, and finally obtain high-quality sulfur concentrate, and maximize the value of sulfur concentrate resources. At the same time realize the secondary resource utilization of acid slag
[0007] (2) In the prior art, there are many types of flotation reagents, the flotation process is complex, and the cost of industrial application is high
[0008] (3) Judging from the current method of removing copper, lead and zinc impurities from sulfur concentrate, the flotation process is the main method. Due to the difference in ore properties of high-grade sulfur concentrate, the intercalation of pyrite and copper, lead and zinc Because of the distribution particle size, occurrence form and other reasons, the floatability of minerals in sulfur concentrate is different, and the single flotation process has poor adaptability to sulfur concentrate with different ore properties. Therefore, it is not suitable for some high-grade sulfur concentrate The effect of removing impurities of copper, lead and zinc is poor
[0011] The significance of solving the above problems and defects is: high-grade sulfur concentrate is easy to obtain in production, although it can be sold as a product, its economic value is low, and the slag impurity content after acid-making and roasting is high, which cannot Selling as iron concentrate can not realize the secondary utilization of resources, resulting in waste of resources

Method used

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  • A method of removing impurities from high-grade sulfur concentrate
  • A method of removing impurities from high-grade sulfur concentrate
  • A method of removing impurities from high-grade sulfur concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Grinding and grading of high-grade sulfur concentrate: Take a high-grade sulfur concentrate, add the high-grade sulfur concentrate to a wet ball mill for grinding at a grinding concentration of 80%, and use a hydrocyclone after the grinding is completed Classify to get overflow pulp and sand settling, in which the concentration of overflow is 30%, the fineness is -0.074mm, the occupancy rate is 80%, the returned sand after classification is returned to the ball mill for grinding, and the overflow pulp is fed into the shaker Perform reselection.

[0055] 2. Shaking table gravity separation process: set the shaking table to set the gravity separation operation parameters as the transverse slope is 5°, the stroke is 20mm, the stroke frequency is 280 times / min, and the flushing water volume is 1.0t / h, and the step (1) is overflowed The final slurry is sent to the shaking table for gravity separation operation, and two products of shaking table gravity separation sulfur c...

Embodiment 2

[0062]1. Grinding and grading of high-grade sulfur concentrate: take high-grade sulfur concentrate from Xtieshan, add high-grade sulfur concentrate to a wet ball mill for grinding at a grinding concentration of 60%, and use a hydrocyclone after grinding Carry out classification to obtain overflow pulp and sand settling. The concentration of overflow is 25%, the fineness is -0.074mm, and the occupancy rate is 85%. in the reselection operation.

[0063] 2. Shaking table gravity separation process: Set the shaking table to set the gravity separation operation parameters as the transverse slope is 5°, the stroke is 15mm, the stroke frequency is 320 times / min, and the flushing water volume is 1.4t / h, and the step (1) is overflowed The final slurry is sent to the shaking table for gravity separation operation, and two products of shaking table gravity separation sulfur concentrate and gravity separation tailings are obtained, and the gravity separation tailings enter the thickener f...

Embodiment example 2

[0067] Table 3 Implementation Case 2 Production Index %

[0068]

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Abstract

The invention belongs to the technical field of sulfur concentrate impurity treatment, and discloses a method for removing impurities from high-grade sulfur concentrate. Under the condition of grinding the sulfur concentrate to a certain fineness, the shaker is used for gravity separation to obtain heavy Sulfur concentrate and gravity separation tailings; after gravity separation tailings are thickened to a certain concentration, add QY agent to inhibit pyrite, then add copper sulfate as activator and suitable sulfide ore collector for two rough separations Copper-lead-zinc concentrate and tailings can be obtained through operation, and the gravity separation concentrate and flotation tailings of this process can be combined into high-quality sulfur concentrate. The gravity separation part of the present invention does not need to add any reagents, and during the gravity separation operation, a part of sulfur concentrate with better quality is preferentially produced from the process, which effectively reduces the load of the flotation operation and reduces the production cost. The actual ore properties are properly adjusted to the yield of sulfur concentrate produced by the gravity separation operation, and the process is highly adaptable.

Description

technical field [0001] The invention belongs to the technical field of sulfur concentrate impurity treatment, in particular to a method for removing impurities from high-grade sulfur concentrate. Background technique [0002] At present, sulfur concentrate is mainly used in the production of sulfuric acid and other industrial production. The grade of sulfur concentrate is generally 30%-50%. The sulfur concentrate refers to products with a sulfur grade of more than 47%, a copper grade of less than 0.10%, and a total lead and zinc grade of less than 0.30%. Sulfur concentrate is oxidized and roasted, sulfur generates SO 2 Used to make sulfuric acid, the remaining slag is the oxidation product of iron Fe 2 o 3 and Fe 3 o 4 , with high iron content, it can be used for ironmaking, realizing the dual utilization of sulfur and iron. When the content grade of high-quality sulfur concentrate is not lower than 47%, the iron content in the slag after oxidation and roasting can rea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03B5/04B03D1/00B03B5/34B03B5/52B02C17/10B03D103/02
CPCB03B9/00B03B5/04B03D1/00B03B5/34B03B5/52B02C17/10B03D2203/02
Inventor 李国栋邱廷省邱树敏李晓波严华山邱仙辉
Owner JIANGXI UNIV OF SCI & TECH
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