Antimony sulantimonate and production method thereof

A technology of antimony thioantimonate and production method, applied in the direction of antimonate/antimonite and the like, can solve the problems of unstable system, decreased product yield and the like, and achieve good comprehensive recovery, high product quality, and reaction system. stable effect

Inactive Publication Date: 2009-07-01
YIYANG SHENGLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although method ③ seems to be more practical than method ①②, it cannot suppress Na 3 Sb 4 The problem of hydrolysis caused by system instability and product yield decline

Method used

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with embodiment.

[0026] A production method of antimony thioantimonate, comprising the following steps:

[0027] (1) Pentavalent antimony Sb V+ preparation of solutions;

[0028] (2) Trivalent antimony Sb III+ preparation of solutions;

[0029] (3) adding the solution prepared by step (1) and step (2) into a buffer solution system for synthesis;

[0030] (4) will obtain antimony thioantimonate filter cake after the precipitated finalization by step (3) gained;

[0031] (5) Rinse, dry, pulverize and sieve the antimony thioantimonate filter cake obtained in step (4) to obtain antimony thioantimonate.

[0032] The present invention is in step (1), pentavalent antimony Sb V+ The preparation of solution is to utilize sodium sulfide solution to leach sodium pyroantimonate, control the concentration of antimony in the leaching solution to be 60-120g / L (the present embodiment is 90g / L), then carry out ...

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PUM

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Abstract

The invention discloses antimony thioantimonate and a method for preparing the same, which are characterized by using sodium pyroantimonate and antimony trioxide powder as raw materials, producing a solution of quinquevalent antimony (Sb) by impregnating the sodium pyroantimonate with a sodium sulphide solution, producing a solution of trivalent antimony by impregnating the antimony trioxide powder with hydrochloric acid, pouring the two solutions into a buffer system for synthesis, adjusting the pH value of the mixed solution with hydrochloric acid and sodium hydroxide respectively to keep the pH value between 2.0 and 2.5, and settling, bleaching, drying, crushing and screening precipitations to obtain the antimony thioantimonate product. The method has the advantages of simple process, stable reaction system, good comprehensive recycling, high-quality products, no 'three wastes' pollution and so on. The product of the method is mainly used as an extreme-pressure wear-resistant additive for lubricant grease and a solid lubricating agent.

Description

Technical field: [0001] The invention relates to the field of fine chemical industry, and is suitable for being used as an extreme-pressure anti-wear additive and a solid lubricant for lubricating grease, in particular antimony thioantimonate and a production method thereof. Background technique: [0002] Extreme pressure anti-wear additive is one of the main additives of lubricating grease. The purpose and function of this type of additive is to form a secondary compound protective film on the mechanical friction surface to prevent wear: it can also prevent burning or burning under extreme pressure lubrication phenomenon occurs, thereby improving the lubricating performance. People have achieved great success in improving the performance of the grease by adding various types of additives to the existing lubricating grease. Since J.R.Sou len and J.P.King of the United States discovered antimony thioantimonate (SbSbS 4 ) has excellent extreme pressure and anti-wear properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G30/02
Inventor 谢兆凤唐磊
Owner YIYANG SHENGLI CHEM IND
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