Top distribution device and distribution method for blast furnace

Abstract

The invention discloses a top distribution device for a blast furnace, which comprises a material flow regulating valve, a rotary drum, a chute, two stock rods and a PLC (programmable logic controller), wherein the material flow regulating valve is arranged at the bottom of a blanking hopper; the roller is arranged at the lower part of the material flow regulating valve; the chute is formed below the rotary drum by a roller device; the stock rods are arranged below the chute and oppositely arranged on the two sides of a blast furnace wall at 180 DEG; and the PLC is connected with the material flow regulating valve and the chute, and controls an opening angle gamma of the material flow regulating valve, an inclination angle alpha of the chute, and an angle beta for uniform speed rotation of the chute. With the adoption of the device and the method, manual intervention is reduced greatly, the number of turns of distribution is automatically controlled in deed, and the device and the method have a very positive effect on continuous and stable operation of the blast furnace.

Description

technical field [0001] The invention relates to a blast furnace top material distribution device and a material distribution method thereof, and belongs to the technical field of blast furnace top material distribution. Background technique [0002] During the blast furnace material distribution process, after the blast furnace receives the material distribution command, the material flow regulating valve of its lower hopper is first opened to a given opening degree (that is, the γ angle) according to the process requirements, and then the furnace material flows through the material distribution drum at a certain flow rate to the On the distribution chute, at this time the distribution chute has been raised to a certain tilting angle (ie angle α) according to the process requirements, and at the same time the distribution chute is rotating at a constant speed in the direction of the horizontal plane (ie angle β). In this way, after a certain number of cloth distribution cycl...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: the proportional valve has high requirements on the number of hydraulic oil levels, generally above level 8, it takes a long time to clean the oil circuit, and the cost is high; the structure is complex, easy to block, difficult to maintain, and the price is relatively high at around 15,000 yuan ;Calculate the opening of the proportional valve from the ore density

Due to the difference in the environment and the degree of dryness of the ore, the opening calculated by this method cannot meet the accuracy required by production, and the control is basically based on the operator's on-site operating experience.

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