METHOD FOR IRON-ORE CONCENTRATE PROCESSING AND IRON-ORE CONCENTRATE MANUFACTURING LINE Russian patent published in 2012 - IPC C22B1/243 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, particularly, to preparing iron ore for melting. A line includes raw-material hoppers 1, 5, 6 and production lines 4, 8, 9, 10 for iron-ore concentrate, limestone and coke, mixing machine 12 and dosing machine 12 for limestone and coke, sintering machine 14 for limestone roasting, bunker 15 and weight-dosing equipment which supplied production line 4 for iron-ore concentrate with hot lime, mixing machine 16 for iron-ore concentrate and lime. A method includes iron-ore concentrate preparation and conveying to production line 4, mixing of lime fraction 3-10 mm with coke fraction 3-12 mm at ratio of 100% of lime and 9-12% of coke and conveying the mixture to sintering machine 14, lime roasting in sintering machine 14 as a result of which hot lime is produced, conveying of hot lime at a temperature of 200-300°C through hermetically sealed bunker 15 to production line 4 with damp iron-ore concentrate with iron-ore concentrate take of 80-120 kg/tonnes, stirring until a homogeneous mixture is obtained.

EFFECT: high-strength iron-ore-lime mixture with high wet-strength properties is obtained.

2 cl, 1 dwg