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Biological oil removing agent for permanent-magnet materials

A permanent magnet material and degreasing agent technology, applied in the direction of magnetic materials, magnetic objects, other chemical processes, etc., can solve the problems of large oily waste liquid, large degreasing late consumption, and inability to decompose oil stains, etc., to achieve long service life , Degreasing quickly and thoroughly, avoiding strong corrosive effects

Active Publication Date: 2014-03-26
BEIJING ZHONG KE SAN HUAN HI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, during the use of existing chemical degreasing agents, a large amount of oily waste liquid is inevitably produced
For the treatment of oily waste liquid, an oil-water separation device is often added to the production process, and then the collected oil is handed over to a special agency for treatment or the waste liquid and domestic sewage are mixed together for treatment, resulting in a large post-oil removal consumption. , also poses a great threat to the environment
The appearance of a large amount of oily waste liquid in the degreasing process is because the existing degreasing agent can only remove oil from the surface of the material, but at the same time it cannot decompose the oil

Method used

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  • Biological oil removing agent for permanent-magnet materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dilute the biological degreasing agent A08 (provided by Guangzhou Tianzhi Environmental Protection Technology Co., Ltd.) with water at a ratio (volume ratio) of 1:99 to obtain a diluted solution, and then adjust the pH of the diluted solution to 7.0 with phosphoric acid and trisodium phosphate , and keep the temperature of the diluent at around 30°C. Divide the same bonded NdFeB permanent magnet material sample into three parts, put them into the above diluent at the same time, and take one of the above three permanent magnet material samples at the first minute, the fifth minute and the 24th hour. out.

Embodiment 2

[0027] Dilute the biological degreasing agent A08 and water at a ratio (volume ratio) of 1:19 to obtain a diluent, then use citric acid and trisodium phosphate to adjust the pH of the diluent to 9.0, and keep the temperature of the diluent at 10 ℃ or so. Divide the same sintered NdFeB permanent magnet material sample into three parts, put them into the above diluent at the same time, take out one of the above three permanent magnet material samples at the first minute, the fifth minute and the 24th hour respectively .

Embodiment 3

[0029] Dilute the biological degreasing agent A08 and water at a ratio (volume ratio) of 1:24 to obtain a diluted solution, then use citric acid and trisodium citrate to adjust the pH of the diluted solution to 6.0, and keep the temperature of the diluted solution at Around 30°C. Divide the same bonded NdFeB permanent magnet material sample into three parts, put them into the above diluent at the same time, and take one of the above three permanent magnet material samples at the first minute, the fifth minute and the 24th hour. out.

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Abstract

The invention relates to a biological oil removing agent for permanent-magnet materials. The biological oil removing agent is prepared according to the following steps: diluting the biological oil removing agent with water in the volume ratio of 1:(19-99) to obtain a diluent; and regulating the pH value of the diluent to 6.0-9.0 by using two of phosphoric acid, citric acid, sodium citrate and trisodium phosphate, and keeping the temperature of the diluent at 10-40 DEG C for later use. The biological oil removing agent can be used for thoroughly removing oil stains in the permanent-magnet material under the condition of mild pH value without generating substances harmful to the environment. The biological oil removing agent is environment-friendly. Meanwhile, microbes in the biological oil removing agent are cheap and are easy to obtain, and the biological oil removing agent has strong continuous oil removal capability, therefore, the oil removal cost can be greatly lowered by using the biological oil removing agent.

Description

technical field [0001] The invention relates to a biological degreasing agent for permanent magnet materials, belonging to the technical field of material surface treatment. Background technique [0002] In recent years, the application and development of NdFeB permanent magnet materials is very rapid, and whether NdFeB permanent magnet materials can be effectively protected is one of the key technologies related to the promotion and application of NdFeB permanent magnet materials. NdFeB permanent magnet materials are mainly prepared from rare earth metals such as neodymium, iron and boron through powder metallurgy process. As the strongest magnetic material at present, it has been widely used in electroplating devices, machinery, medical treatment, automobiles and other fields, and its application prospects are very broad. [0003] NdFeB permanent magnet material is a porous material prepared by powder metallurgy process. Because of the neodymium-rich phase, NdFeB main pha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/32H01F1/057
Inventor 白晓刚
Owner BEIJING ZHONG KE SAN HUAN HI TECH
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