Challenges that faced by carbonyl iron powder industry in
As carbonyl iron powder also contains some impurities such as Fe2O3 and Fe3N as well as the iron surface will absorb CO and NH3 iron powder often has high hardness which can be called hard powder After iron powder has been reduced by H2 for about 1 hour the iron content will increase to about 99 percents while the other element contents will obviously reduce This kind of carbonyl iron