Green-ball concentrated screening equipment and process thereof

Abstract

The invention belongs to the technical field of iron ore concentrate agglomeration and particularly relates to green-ball concentrated screening equipment and a process thereof. The green-ball concentrated screening equipment comprises a green-ball material collected belt conveyor, a swing belt conveyor, a large ball roller-type screening machine, a large ball chute, a large ball material received belt conveyor, a green-ball crusher, a bulk material collected belt conveyor, an undersize ball wide belt conveyor, a roller-type cloth screening machine, an undersize small ball chute, a small ball belt conveyor and an oversize ball slide carriage. The process comprises the following procedures of: (1) adding green-balls to the green-ball material collected belt conveyor, adding obtained materials to the swing belt conveyor, adding obtained materials to the large ball roller-type screening machine, adding obtained materials to the large ball material received belt conveyor, adding obtained materials to the roller-type cloth screening machine, and adding obtained materials to a chain grating machine; (2) adding obtained materials to the large ball roller-type screening machine, adding obtained materials to the undersize ball wide belt conveyor, adding obtained materials to the green-ball crusher, adding obtained materials to the bulk material collected belt conveyor, and adding obtained materials to a pelletizing chamber; (3) adding obtained materials to the roller-type cloth screening machine, adding obtained materials to the small ball belt conveyor, adding obtained materials to the bulk material collected belt conveyor, and adding obtained materials to the pelletizing chamber. The invention has the advantages of reasonable design, small investment, high finished product ratio, low process energy consumption, low repair rate and high economic benefit.

Description

technical field [0001] The invention belongs to the technical field of iron ore concentrate agglomeration, and in particular relates to a centralized screening equipment and process for green balls. Background technique [0002] Since there are very few natural rich ores at present, it is necessary to manually agglomerate the mined iron ore concentrate powder. The agglomeration equipment is called a pelletizing machine. Because, in general, the size required for the pellets is 8-16mm, it is impossible for the pelletizing machine to realize that the specifications of the raw pellets produced are completely within this size range and must pass through the screening equipment. for grading. The current pelletizing and screening process is separate screening, that is, each pelletizing machine is equipped with a green pellet screening equipment, and the classified green pellets are then transported to their respective destinations by a belt conveyor. Such a process has the f...

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Problems solved by technology

Such a process has the following problems: 1) The construction cost of the pelletizing chamber is high

Since pelletizing machines and screening machines need to be arranged separately, the workshop of pelletizing room must be wide enough to arrange pelletizing machines in a staggered manner to make effective use of the workshop as much as possible; 2) The cost of equipment purchase and operation and maintenance is high

Each pelletizing machine is equipped with a screening machine. The screening machine requires high processing precision, so the equipment price is very high, and each screening machine needs to be driven by a motor, so the equipment operation cost is high; 3) The green pellets are transferred frequently, The yield of green balls is low, which increases the production cost

Due to the low strength of the green balls, the green balls made by the pelletizer need to be transported to the screening machine through the small green ball belt machine in turn, and the qualified green balls after screening are transported to the chain grate machine room by the aggregate belt machine, thus increasing The number of times of transshipment increases the drop of raw balls; 4) The cloth of the chain grate machine is uneven

Since the existing equipment distributes the material through the swing tape and or the shuttle distributor, using such equipment to distribute the material will cause uneven material layers on the wide belt conveyor, and such material layer inhomogeneity will also be transmitted to the chain grate machine. Very detrimental to the smooth progress of production

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