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Oxygen absorbent for preventing oxidization of metal powder

A technology of metal powder and oxygen absorbing agent, which is applied in other chemical processes, chemical instruments and methods, etc., to achieve the effect of good oxygen absorption capacity and extended shelf life

Inactive Publication Date: 2012-01-18
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an oxygen absorber for preventing oxidation of metal powder that can solve the problem of easily oxidized metal powder absorbing oxygen in view of the above-mentioned deficiencies in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] An oxygen absorber to prevent oxidation of metal powder, composed of 20% MgCl 2 Mix 5 parts of activated clay soaked in aqueous solution, 10 parts of baked gypsum, 20 parts of reduced iron powder and 100 parts of calcium oxide by weight. After heating in an oven at 80°C for 30 minutes, immediately pack it with porous packaging cloth, and cover it with plastic The bag is airtightly packaged to obtain an oxygen absorbing agent. When in use, pack the easily oxidizable product in a plastic bag and before sealing, tear the plastic bag outside the oxygen absorber, put it on the easily oxidizable product, and then seal the mouth of the easily oxidizable product packed in a plastic bag.

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PUM

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Abstract

An oxygen absorbent for preventing oxidization of metal powder relates to an oxygen absorbent which ensures that easily oxidized metal powder is avoided from oxidization or prolongs an oxidization period in a powder metallurgical production process. The oxygen absorbent is prepared from the following raw materials in weight ratio: 5 parts of active carclazyte impregnated in 20% of MgCl2 aqueous solution, 10 parts of baking gypsum, 20 parts of reductive iron powder and 100 parts of calcium oxide. The preparation process is as follows: mixing the raw materials according to the proportion; after heating in an oven at the temperature of 80 DEG C for 30 min, packaging with porous packaging cloth instantly; and packaging with a plastic bag at the outside in a sealing manner to produce the oxygen absorbent. The oxygen absorbent provided by the invention has better oxygen absorptive capacity and solves the problem that the easily oxidized metal powder absorbs oxygen easily. Meanwhile, after the easily oxidized metal powder such as electrolytic copper powder and the like is unpackaged, the oxygen absorbent can continue absorbing oxygen so as to prolong the quality guarantee period of products.

Description

technical field [0001] The invention relates to an oxygen absorbing agent for preventing oxidation of metal powder, which relates to a reagent formula for ensuring that easily oxidizable metal powder is not oxidized or prolonging the oxidation period in the production process of powder metallurgy. Background technique [0002] Electrolytic copper powder and other easily oxidizable metal powders, in order to ensure that they will not be oxidized during the production process, often use saponification treatment, add a certain amount of corrosion inhibitor before product packaging, etc. for surface coating, so as to isolate oxygen and achieve non-oxidation or prolong oxidation. period purpose. In the actual use process, because the saponification is not done well, or the corrosion inhibitor is not added enough, or even the inner film bag of the packaging is damaged, the powder will be oxidized or the oxygen content is too high, which will affect the subsequent use. The anti-ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30
Inventor 汪锦瑞
Owner JINCHUAN GROUP LIMITED