METHOD OF PROCESSING IRON ORE TO MAKE COLORING AGENT AND PELLETS Russian patent published in 2013 - IPC C09C1/24 C22B1/244 

FIELD: process engineering.

SUBSTANCE: invention may be used in paint-and-lacquer, pharmaceutical, cosmetic, food and metallurgical industries. Proposed method comprises iron ore crushing, grinding, wet magnetic separation to produce magnetic and nonmagnetic fractions, ultrasound oxidation destruction of nonmagnetic fraction, hydraulic classification, thickening and drying. Stage-by-stage hydraulic classification comprises primary classification and, at least, two cleaner classification. Magnetic fraction and sand of primary classification are pelletised using molasses as binder in amount of 1-5 wt% at moisture of pelletised blend of 8-12%.

EFFECT: iron oxide coloring agents and pelletised raw stock for metallurgy.

2 cl, 3 dwg, 1 ex