A new method to prepare chromic oxide green pigment was proposed. According to the investigation of key factors and related mechanism of the hydrogen reduction and sintering step

chromic oxide green pigment with excellent performance was prepared

and NaOH as byproduct was obtained for recycling use. The results showed that lower hydrogen reduction temperature and suitable addition of Al

were beneficial to obtaining the high quality chromic oxide green pigment. Additionally

sintering mechanism of the chromic oxide green pigment was evaporation-condensation. Based on the chromate clean process and integrated technology of chromium compounds which was developed by the Institute of Process Engineering

Chinese Academy of Sciences

the new method efficiently enables the short and clean production route from chromite ore to chromic oxide green pigment

expanding application of chromate clean production.