Iron ore sinter additive

A sintering and additive technology, applied in the field of sintering additives, can solve the problems of poor sintering granulation effect, low sintering mineralization rate and strength, and high production cost, so as to increase the sintering mineralization rate and strength, reduce production costs, The effect of improving productivity

CN101240374AInactive Publication Date: 2008-08-13鞍山市佳良能源技术开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-08-13
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a new additive for iron ore sinter, which can greatly improve sintering granulating effect, increase sintering mineralization rate and strength, lower production cost, and improve production efficiency. The invention is characterized in that the new additive for iron ore sinter is composed of 60% of calcium oxide, 2% of silicon dioxide, 2% of Al2O3, 4% of magnesia, 1% of ferric oxide, 1% of calcium chloride and 30% of calcium carbonate. The above materials are uniformly mixed, and then free moisture is dried by a vapor dryer, the water content is 49%, finally, the materials fine grinded by a globe mill to form the new additive for iron ore sinter. The invention can improve the production of sintering granulating 3mm to 5mm granulation pellet from 24% to 36.7%, the fine granulation is reduced obviously, the sintering granulating effect is improved significantly, the sintering mineralization rate and strength are increased notably, thereby lowering production cost and improving production efficiency.
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Description

technical field

[0001] The invention relates to a sintering ore additive, in particular to a new type of iron ore sintering ore additive which can greatly improve the sintering granulation effect, increase the sintering ore-forming rate and strength, reduce the production cost and improve the production efficiency. Background technique

[0002] In the production of iron ore sintering, iron ore and some materials such as lime are used as additives to prepare and sinter pellets to provide artificial rich ore with a certain particle size and metallurgical properties for smelting. Iron ore sintering adopts the roller ball process, which The higher the particle size ratio of 3-5mm pellets is required, the better. The current iron ore sinter has problems such as poor sintering granulation effect, low sintering rate and strength, and high production cost. Contents of the invention

[0003] The present invention overcomes the above existing defects, and aims to provide a new type...

Examples

Embodiment Construction

[0007] The novel additive for iron ore sintering ore of the present invention is realized in this way, and is described in detail below. To prepare new additives for iron ore sinter, take raw materials: 60kg of calcium oxide, 2kg of silicon dioxide, 2kg of aluminum oxide, 4kg of magnesium oxide, 1kg of iron oxide, 1kg of calcium chloride and 30kg of calcium carbonate, and mix the above raw materials with a mixer Mix evenly, then dry the free water with a steam dryer to make the water content 49%, and then enter into a ball mill for fine grinding to make a new additive for iron ore sinter.

[0008] The present invention has gone through production test and production comparison test, adding the new iron ore sintering ore additive of the present invention which accounts for 20% of the total amount of lime in the original production, which can increase the sintering and granulation of pellets with a particle size of 3 to 5mm from the original production of 24%. To 36.7%, the smal...