Partition agent for ferrite body and its preparation and treatment method after use

Abstract

The invention relates to a release agent for a ferrite blank, its preparation and its post-use treatment method, which belong to the technical field of magnetic material blank forming processing aids. It is characterized in that: the release agent is composed of base oil, emulsifier, and antirust agent, and the parts by weight of each component are: 15-50 parts of base oil, 20-60 parts of emulsifier, and 5-10 parts of antirust agent; The base oil is any one or more of 5# white oil, 7# white oil, 10# white oil, Foss oil or propylene oxide condensate. The invention can meet the production process requirements of the ferrite body, and has a good demoulding effect; the synthetic raw material of the release agent is green and environmentally friendly, non-toxic and harmless, greatly reduces the content of phosphorus and ammonia nitrogen in the release agent wastewater, and overcomes the COD High disadvantages, avoiding excessive discharge of pollutants; the release agent and the release agent diluted with distilled water have good stability, and the waste water generated after the release agent is released from the mold is easy to handle and can be recycled.

Description

technical field [0001] The invention relates to a release agent for a ferrite green body, its preparation and a treatment method after use, and belongs to the technical field of magnetic material green body forming and processing aids. Background technique [0002] There are many magnetic material enterprises in the world, and there are many in our country, especially in Zhejiang Province, which has the industrial advantages of magnetic materials. Ferrite is a new type of non-metallic magnetic material developed in the 1940s. Ferrite generally refers to the composite oxide of iron group and one or more other metal elements. It belongs to semiconductor. It is used as Magnetic media are used. [0003] The production process of ferrite body magnets: mixing ferric oxide + barium carbonate or strontium carbonate in proportion → green body pressing → sintering → grinding and milling to make raw material powder → raw material powder + water + other ingredients in proportion by wei...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, saponification fluid, cutting fluid, engine oil (lubricating oil, kerosene, diesel oil, etc.) are used as release agents in the processing of magnetic material blanks. The existing disadvantages are: raw materials are not environmentally friendly, easy to stick to molds during molding, manual wiping is required, waste water The content of phosphorus and ammonia nitrogen in medium is high; some large-scale enterprises, in order to improve production efficiency and ensure product quality, mix the release agent with diesel or kerosene. The aromatic content of diesel is relatively high, which is relatively harmful to the human body. Containing aromatic hydrocarbons, nitrogen, oxygen, sulfur, etc. are also relatively harmful to the human body

The use of diesel or kerosene in the release agent will undoubtedly increase the production cost, not only increase the difficulty of workers' operation, but also the diesel or kerosene in the wastewater will increase the difficulty of wastewater treatment, poor biodegradability, and greatly increase the COD in wastewater

For example, the patent application publication number CN 1843655A discloses a wet-forming release agent for magnetic materials and its preparation method. The release agent uses kerosene as a medium, which increases the difficulty of wastewater treatment; patent announcement number: CN 102085563 A, which discloses A release agent and a preparation method thereof, the release agent contains a gasoline mixture with a weight percentage of 88-99.5%, which also increases the difficulty of wastewater treatment

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