Ferrous metallurgy pellet iron-containing raw material preprocessing and dosing system

Abstract

The invention discloses a ferrous metallurgy pellet iron-containing raw material preprocessing and dosing system which is characterized by sequentially comprising an incoming material belt conveyer for conveying iron ore concentrate to a high-pressure roller grinding chamber, a roller type sieving machine arranged below the incoming material belt conveyer, an iron ore concentrate buffer cabin arranged below the roller type sieving machine, a movable quantitative feeder arranged below the iron ore concentrate buffer cabin, a high-pressure roller grinder arranged below the head of the movable quantitative feeder, a bypass chute formed in one side of the high-pressure roller grinder, a dosing belt conveyer for conveying materials discharged from the high-pressure roller grinder or the bypass chute to a dosing chamber, and a bentonite and dust storage and feeding system which is arranged in the dosing chamber and is used for conveying bentonite and dust to the dosing belt conveyer and conveying the bentonite and the dust to a next process together with the iron ore concentrate on the dosing belt conveyer. According to the system, the occupied area of the dosing chamber, the basic construction investment, the material transfer and loss and the operating energy consumption are reduced.

Description

technical field [0001] The invention relates to the pretreatment and batching of raw materials in the field of material metallurgy, in particular to the pretreatment and batching system of pellet iron-containing raw materials for iron and steel metallurgy. Background technique [0002] In the field of pellet production for metallurgy, iron concentrate with qualified water content cannot fully meet the needs of pelletizing, and the pelletizing process also needs to consider the particle size and specific surface area of ​​iron concentrate. The current existing technology is to improve the particle size and specific surface area of ​​the iron concentrate through the high-pressure roller grinding process to meet the requirements of the pelletizing process, so that the iron concentrate with qualified water content, particle size and specific surface area is transferred through the batching belt machine To the batching ore tank for centralized batching. The existing iron-contain...

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Problems solved by technology

[0003] 1. Iron concentrate bins, bentonite bins, and dust bins are all arranged inside the batching room, and the number of ore bins in the batching room is large, resulting in a large area of ​​the batching room, increasing equipment investment and infrastructure costs

[0004] 2. The high-pressure roller grinding chamber and the batching room are arranged separately, resulting in a long rewinding distance of the iron concentrate, a large number of rewinding times, and a large loss during the rewinding process. The initial investment, energy consumption, and daily maintenance and repair of the unloading equipment and the belt conveyor corridor The cost is large

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