Balling and Direct Reducing Experiments of Carbon-Bearing Chromite Powder

Balling and reducing experiments of carbon-bearing chromite powder were carried out in laboratory. The effect of grain size of raw materials, amount of binder and carbon and other factors on the green pellet properties and the influence of reducing temperature and time on the metallization rate of carbon bearing chromite pellet were investigated. The results shown that the metallization rate of carbon-bearing chromite pellet of up to 90% under the reducing temperature of 1350℃, reducing time of 15 minutes, the amount of carbon exceed the the theoretical carbon requirement by 20%. By using heating reflux method and 1:3 H₂SO₄, the chemical analysing of metallic Cr and Fe becomes easier.