Through the analysis of the working condition of the cinder pump, rational reform and model change were carried out, based on pipe network and pump characteris The real running efficiency of cinder pumps was enhanced considerably.

High concentration organic wastewater is treated by the methods of slag filter and deep internal circulation.

After pressing balls and drying treatment at chromic filter residue generated during the process of recovery of vanadium by means of different methods,and after adding some volumes of reductant and slagging flux,we smelt the chromic filter residue in the furnace.