The article considers the types of the main man-made waste generated at metallurgical enterprises. The ways of waste formation in the form of slag, aspiration dust and sludge are described. The reasons why the use of waste at ferroalloy enterprises complicates the technological process of smelting finished products are indicated. The methods of waste calcination for further use in ferrochrome smelting are considered. Three main methods of pelletizing were tested in the laboratory: extrusion, pelletizing and vibrobriquetting. The essence of the method of cupping technogenic waste from ferroalloy production by extrusion is described. Aspiration dusts and sludge from ferrochrome gas cleaners were used as the materials under study. A material based on modified lignosulfonate was used as a binder. The types of materials obtained are shown depending on the method of caking - braces, pellets and briquettes. The finished coated materials were dried in a drying oven at a temperature of 120°C before strength testing until moisture was completely removed. Graphically, the results of the strength characteristics of the pelletized raw materials for compression, discharge from a height of 2 m and impact strength on the drum are shown. The indicators of the strength characteristics of the pelletized raw materials are determined depending on the methods of pelletizing with their comparative analysis. The resulting finished coated materials have high strength characteristics.

JUNDIBAYEV M.K.

Master of Technical Sciences, process engineer «ERG Research and Engineering Center» LLP, Aktobe, Kazakhstan

E-mail: Maulen.Jundibayev@erg.kz, https://orcid.org/0009-0007-2915-378X

MYRZAGALIYEVA.A.

master of Technical Sciences, Chief Engineer «ERG Research and Engineering Center» LLP, Aktobe, Kazakhstan

E-mail: Aibar.Myrzagaliyev@erg.kz, https://orcid.org/0009-0009-1749-5154

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