PELLET OBTAINING METHOD Russian patent published in 2017 - IPC C22B1/244 

FIELD: metallurgical engineering.

SUBSTANCE: at the pelletiser bottom there formed scull: charge is supplied to the pelletiser in two flows. The first flow of charge is introduced into the gas stream with formation of gas-moisture-charge jet into which pore-forming additives are fed. As pore-forming additives, phytogenic particles grounded to the needle state or vegetable waste from agricultural production are used. At the pelletiser bottom there formed is a zone occupied with charge and a zone free from charge. The charge is sprayed on the skull in a zone free of charge, with the formation of a dense layer of wet charge, which is divided into nuclei, precombusting the embryos to the pellets with a charge of the second stream, drying and roasting them. In this case, the pore-forming additives are preliminarily soaked in a sulfite-fat distiller's beer for 0.1-3.0 hours at a temperature of 30-90°C.

EFFECT: increase in strength and yield of conditioning pellets.

1 dwg, 1 tbl, 1 ex