EVALUATION OF THE EFFECTIVENESS OF USING THE FLOFORM BINDERIN THE BRIQUETTING OF METALLURGICAL PRODUCTION WASTE

Abstract

The processes of iron and steel production are always associated with the formation of solid industrial waste. briquetting process is the versatile methods of occluding waste. The paper presents the results of the study of the process of briquetting of industrial solid waste by extrusion using the Floform binder. The strength characteristics of briquettes are influenced by the composition of the charge, the dosage of the binder, and the holding time of the briquettes. Briquettes made from three versions of blankets were studied – 40% oiled scale and 60% dust from gas purges of electric steel smelting production; 80% oiled scale and 20% lime screening; 30% oily scale, 30% blast furnace sludge and 40% dust from gas purges of electric steel smelting production. The chemical composition of the subjects was studied by the method of X-ray spectral analysis on the ARL OPTIM'X spectrometer, Fe_tot was determined by the titrimetric method, S_tot and C were determined by the infrared absorption method on the ELTRA CS-2000 analyzer. Briquettes were prepared on a Verdes 050-P/80 laboratory extruder. Drying of the briquettes was carried out by placing the briquettes in open air at room temperature for 24. 48. 72 hours, measuring the compressive strength and dropping every 24 hours. Determination of compression strength of briquettes was carried out according to the procedure GOST 24765–81 on a hydraulic small-sized press PGM-100MG4. The briquette drop strength was determined according to the procedure GOST 25471–82 by three times dropping briquettes on a steel plate from 2 m and subsequent screening on a 5 mm screen with determination of class output. Studies have shown the possibility of producing durable briquettes from industrial solid waste by extrusion using the Floform binder. The use of the resulting briquettes in metallurgical production will save natural resources.