Pickling purification method of iron disulfide

A technology of ferric disulfide acid and purification method, which is applied in the directions of iron sulfide, electrical components, battery electrodes, etc., can solve the problems of low purity of iron disulfide products, and achieve the effects of low equipment requirements, simple process operation, and improved purity.

Inactive Publication Date: 2019-09-24
贵州汇都电池材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a method for pickling and purifying iron disulfide to solve the problem that the existing iron disulfide production process will introduce other substances, resulting in low purity of iron disulfide products

Method used

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  • Pickling purification method of iron disulfide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for pickling and purifying iron disulfide, comprising the steps of:

[0019] Step 1: Grind the ore containing iron disulfide into ore powder with a particle size of 80-320 mesh through a grinder; the powdered ore can increase the reaction speed with hydrochloric acid in the subsequent impurity removal process, improving the operating efficiency. efficiency.

[0020] Step 2: Put the ore powder in step 1 into a glass vessel, then add hydrochloric acid (wherein the volume ratio of hydrochloric acid to ore powder is 1:1, and the concentration of hydrochloric acid is 1.19g / mL) to the glass vessel, and then apply the The solution in the vessel was heated to 95°C, and the ore powder in the solution was continuously stirred during the heating process, and the results in Table 1 were obtained by heating the solution for different times:

[0021] Table 1 (heating temperature is 95°C):

[0022] heating time 1 hour 3 hours 5 hours The purity of iron ...

Embodiment 2

[0029] A method for pickling and purifying iron disulfide, comprising the steps of:

[0030] Step 1: Grind the ore containing iron disulfide into ore powder with a particle size of 80-320 mesh through a grinder; the powdered ore can increase the reaction speed with hydrochloric acid in the subsequent impurity removal process, improving the operating efficiency. efficiency.

[0031] Step 2: Put the ore powder in step 1 into a glass vessel, then add hydrochloric acid (wherein the volume ratio of hydrochloric acid to ore powder is 1:1, and the concentration of hydrochloric acid is 1.19g / mL) to the glass vessel, and then apply the The solution in the container was heated for 4 hours and the temperature of the solution was gradually raised, and the ore powder in the solution was constantly stirred during the heating process, and the results in Table 2 were obtained by changing the heating temperature of the solution:

[0032] Table 2 (heating time is 4 hours):

[0033] ...

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Abstract

The invention discloses a pickling purification method of iron disulfide, and specifically relates to the technical field of compound preparation. The pickling purification method of iron disulfide comprises the following steps: grinding ore containing iron disulfide into ore powder by a grinding apparatus; placing the ore powder in a container, then adding hydrochloric acid to the container, heating the solution in the container, and continuously stirring the ore powder during the heating process; pouring out a solution after reaction, then adding tap water to the container, and repeatedly stirring the ore powder; replacing tap water with pure water, and then carrying out repeated stirring again; and then pumping out the pure water in the container by a vacuum pump, wherein the ore powder after the pure water is discharged is iron disulfide powder. The technical scheme adopted by the method overcomes the problem that an existing iron disulfide production process can introduce other substances to lead to low purity of an iron disulfide product, and thus the method can be used for purification of iron disulfide.

Description

technical field [0001] The invention relates to the technical field of compound preparation methods, in particular to an iron disulfide pickling purification method. Background technique [0002] In the battery industry, lithium batteries have received more and more attention and attention due to their advantages such as high energy density, high voltage, wide operating temperature range, and long life. Over the past decade, lithium batteries have dominated the primary (non-rechargeable) and secondary (rechargeable) battery markets, and are widely used in portable electronic devices such as mobile phones, notebook computers, and digital cameras. [0003] In lithium batteries, lithium-iron disulfide batteries are a kind of FeS 2 It is a primary battery with positive electrode active material, metal Li as negative electrode active material and organic electrolyte as electrolyte. The voltage of the primary battery can reach 1.5V, so it can replace the commonly used alkaline b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12H01M4/525H01M4/58
CPCC01G49/12C01P2006/80H01M4/525H01M4/5815Y02E60/10
Inventor 杨载明向忠宝吴玉忠李一夫梁霞文加波
Owner 贵州汇都电池材料有限责任公司
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