Reduction of cadmium oxide from (CdO plus ZnO) mixture

Reduction of cadmium oxide from (CdO + ZnO) mixture by means of a mixture o f gases (CO + CO2) and of carbon in the temperature range 1048-1200 K were investigated. It has been found that the reduction rate of CdO is proportio nal to the CO content in the mixture of the reducing gases. The effect of t emperature and of the composition of the gaseous phase on the reduction rat e of CdO and on the zinc content in the gaseous reduction products was dete rmined. The value of the activation energy of this process has also been es timated. In the case of CdO reduction from zinc-cadmium carbonate by means of carbon the conditions were determined which should guarantee obtaining c admium of Cd-"0" grade or cadmium oxide of ,,C" grade.