Chemical Interactions of Red Mud during the Cleaning of an Industrial Gases Ejected to the Atmosphere from Harmful Impurities

There are two serious chemical technological problems to be solved simultaneously with significant environmental and economic gain. The first problem is the necessity of complete processing of red mud. The second problem is a decrease in the amount of toxic gases ejected to the atmosphere from industrial enterprises. The importance of the solution of the first problem increased sharply after the large environmental catastrophe happened in Hungary in 2010. The risks of repeating a similar catastrophe increase because of natural cataclysms, which become more frequent. These problems can be solved by the application of multicomponent (in chemical composition) red mud, which can interact with toxic gaseous sulfur compounds and remove the latter from industrial waste gases. The results of laboratory studies are confirmed by industrial tests. The chemical and thermodynamic capacities of the material are revealed. The experimental proofs and the corresponding characteristics of the gas emissions from industrial heat and power plants and the steelmaking and agglomeration productions are presented.