Method for preparing nanometer sulfo antimony acid antimony

A technology of antimony thioantimonate and nanotechnology, applied in the direction of antimonate/antimonite, nanotechnology, etc., can solve problems such as low lubrication performance, system instability, product quality decline, etc., and achieve extreme pressure and anti-wear performance Good lubricating performance, good comprehensive recovery, and no three-waste pollution

Active Publication Date: 2012-07-18
YIYANG SHENGLI CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Publication number is that the patent application of 101468814A adopts the third method to prepare antimony thioantimonate is an early research before the present invention is carried out, and the contriver finds that the product particle obtained by this method is coarse, and particle s...

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  • Method for preparing nanometer sulfo antimony acid antimony
  • Method for preparing nanometer sulfo antimony acid antimony
  • Method for preparing nanometer sulfo antimony acid antimony

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Embodiment

[0024] (1) Utilize sodium sulfide solution to leach sodium pyroantimonate, the concentration of antimony in the leach solution is 123.16g / L, then this leach solution is carried out cooling and crystallization, obtains sodium thioantimonate intermediate product, then this thioantimonate Sodium intermediates were made into pentavalent antimony solution containing antimony 91.38g / L.

[0025] In the present invention, 529.86g of sodium sulfide nonahydrate is dissolved to form a 496mL solution, and then 123.8g of sodium antimonate is added. Control the leaching temperature at 85°C, stir and leaching for 2.5 hours, filter and cool to below 5°C to obtain 168.83g of sodium thioantimonate nonahydrate crystals, dissolve the crystals in 470mL of pure water to obtain pentavalent antimony containing 91.38g / L antimony Antimony solution.

[0026] (2) The trivalent antimony solution was prepared by leaching antimony white with saturated sodium chloride solution of hydrochloric acid, controll...

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Abstract

The invention discloses a method for preparing nanometer sulfo antimony acid antimony via the uniform precipitation method, comprising the following steps: employing leukonin and antimony white as the raw materials; utilizing sodium sulfide to leach leukonin, thus to obtain a pentavalent antimony solution; employing the sodium chloride solution of the hydrochloric acid to leach antimony white forpreparing a trivalent antimony solution; slowly adding the two solutions into a buffer system containing a surfactant; and employing supersonic wave stirring for homogeneous precipitation. The generated precipitation, after receiving the treatment of aging, dispersing, rinsing, and drying in a tartrate solution, is turned into the nanometer sulfo antimony acid antimony product. The method features simple process and high yield, causes no pollution to the environment, and is easy to operate and put into industrial production. The color of the produced product is umber, with granularity being 93nm, and is compatible with the grease. The produced nanometer sulfo antimony acid antimony is an excellent extreme pressure-antiwear additive and solid lubricant of the lubrication grease. As an additive, the performance index of the product far exceeds the national standards about the extreme pressure lubrication grease.

Description

technical field [0001] The invention relates to the field of fine chemical industry, and is suitable for being used as an extreme pressure antiwear additive and a solid lubricant for lubricating grease, in particular to a preparation method of nano antimony thioantimonate. technical background [0002] Extreme pressure anti-wear additive is the main additive of lubricating grease. The purpose and function of this kind of additive is to form a secondary compound protective film on the mechanical friction surface to prevent wear and tear, and to prevent burning or burning under extreme pressure lubrication. , thereby improving the lubricating performance. People add various types of additives to the existing lubricating greases, which have achieved great success in improving the performance of the greases. Antimony thioantimonate is a kind of extreme pressure antiwear additive and solid lubricant for lubricating grease with excellent performance. In the 1980s, it was first s...

Claims

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Application Information

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IPC IPC(8): C01G30/02B82Y40/00
Inventor 杨喜云段习韬唐磊
Owner YIYANG SHENGLI CHEM IND
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