Clarification of Circulation Water for Gas Cleaning at Ferroalloy Making Plants Using a Composite Coagulant

The paper presents the results of industrial testing and using of reagents for circulation water clarification for gas cleaning systems at ferroalloy making plants. The process of treatment involving the combination of liquid composite coagulant AS-C2001 and powder anionic flocculant AS-FL7003 was shown to remove successfully suspended material from circulation water for gas cleaning and to reliably provide the specified amount of suspended material (less than 150 mg/L) in cold water used in gas cleaning. The proposed process of treatment with the mentioned reagents has been employed for more than 6 years at the section of water preparation for the gas cleaning installation of the reduction furnace at one of the ferroalloy plants in Kazakhstan.