METHOD OF METAL CHIP BRIQUETTING Russian patent published in 2016 - IPC C22B1/244 C22B1/245 C22B1/248 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used in processing of metal chips and sludge wastes of metallurgical industry. One crushes and cleans the chips, adds binding material, mixes 70-75 % of ferrous metal chips and 25-30 % of aluminium alloy chips for 1-3 minutes. One loads the mixture into a die mold for 1/3 of its height, adds binding material in the amount of 30-35 % of metal chips volume, in the quality of which use is made of powdered components in the form of peat with particle size of up to 3 mm, arc-furnace sludge with iron oxide content Fe₂O₃ - 70-80 % with the following ratio, MP: peat - 30-35, arc-furnace sludge - 65-70, and paste-forming liquid based on molasses for preparation of which use is made of water - 30-40 %, rest - molasses. At that, consumption of paste-forming liquid is 40-45 % of the weight of the powdered components, then one adds the remaining portion of metal chips, compacts the mixture, pushes it from the die mold and dries at a temperature of 70-75 °C during 40-50 minutes.

EFFECT: higher mechanical strength and physical and chemical stability of briquettes, reduction of their cost and wider raw material base.

1 cl