A Study of Slag Melting Cyclone to Select the Direction for the Future Use
At the metallurgical enterprise of the Far East (the district of Novoshakhtinsky village of Primorsky Krai) during the processing of the germanium-containing raw materials of the Pavlovsky brown coal deposit, the waste of the production process is formed-granulated slag sent to storage. In order to dispose of this technogenic education, it is necessary to propose an energy-efficient, environmentally friendly method for processing waste from a metallurgical enterprise in compliance with environmental norms. In accordance with modern requirements, it is necessary to solve the problem with the utilization of cyclone smelting slag before the operation of the facility. The design documentation recommends the use of cyclone smelting slag in construction or production of building materials. To determine the direction of utilization of cyclone slag, information is needed on the chemical, granulometric composition of the slag, as well as on the properties of the material when interacting with water. Using the method of reducing sulfide cyclone melting with flux and sulphidizer additives, an experimental preparation in the laboratory of granulated slag similar in properties to the slag of cyclone smelting obtained at the enterprise was carried out. Slag samples were obtained for further study. With the use of modern methods and approaches applied during the work, the compositions and properties of slags and additives, chemical analysis of slag for macro components, X-ray phase analysis necessary for environmental assessment are determined. The physicochemical and organoleptic parameters of the slag are determined in accordance with existing standards. Thus, the maximum particle size of the slag, no more than 10 mm, the content of particles in the material of particles larger than 5 mm, not more than 9.70%, which corresponds to GOST 5578-94. The density and humidity of the slag are also determined. It was found that when interacting with water, the resulting solution is characterized by a weak alkaline reaction, which does not interfere with the use of the material in the industrial process. It is shown that the resulting slag is suitable for its subsequent utilization.