Abstract
The results of research aimed at developing a technology for processing chromate sludge using reduction smelting methods are presented. The main objective of the process is to convert chromium compounds into a metallic state. It was established that reduction smelting provides effective reduction of chromium oxides. Experimental smelting demonstrated the possibility of almost complete reduction of chromium to the metallic phase. The resulting oxide part of the processed products is recommended for use as construction aggregate. To improve the technological efficiency of sludge processing, preliminary agglomeration of chromate sludge is proposed. Briquetting with the use of bitumen is recommended as an agglomeration method for electric smelting