Gravimetric-method material distribution device for medium and small sized ironmaking blast furnaces and material distribution method of device

Abstract

A gravimetric-method material distribution device for medium and small sized ironmaking blast furnaces and a material distribution method of the device are suitable for medium and small sized ironmaking blast furnaces about 1,000 m<3>. A pressure sensor and a pressure compensation device are additionally arranged on a material distributor; when a blast furnace charging bucket distributes material to a furnace top, the pressure in the charging bucket suddenly increases to furnace top pressure at the moment a lower sealing valve is opened, the pressure signal of the pressure compensation device is taken from the furnace top pressure, weight increase caused by pressure increase is calculated through the conversion of an automatic control system, actual weight is obtained after offset calculation, and material distribution is conducted automatically according to the actual weight; the flexibility is high, and material sticking in the charging bucket is avoided; the inclination angle of a chute is set automatically according to a material curve so as to ensure that material in the charging bucket can be discharged completely every time and cannot be accumulated; the material distribution effect is good; the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of ironmaking equipment and relates to a 3 Left and right small and medium-sized ironmaking blast furnace gravimetric distributing devices and a distributing method thereof. Background technique [0002] At present, the distribution method of small and medium-sized blast furnaces is restricted by equipment and the continuation of operating habits. Generally, ring-shaped distribution is the main choice. Almost 90% of small and medium-sized blast furnaces use this distribution method. This method follows the preset Value, adjust the angle of the material flow regulating valve, the tilting angle and the number of rotations of the cloth distributor. After the counting is completed, the cloth is finished. Because this material distribution method is based on the completion of the number of turns as the symbol of the end of the material distribution, rather than based on the actual material empty in the material ...

AI Technical Summary

Problems solved by technology

Because this material distribution method is based on the completion of the number of turns as the symbol of the end of the material distribution, rather than based on the actual material empty in the material tank, if the material flow control valve is stuck or the furnace top pressure and other reasons cause the material tank to not be unloaded, There will be a phenomenon that the program judges that the material tank is empty, but the actual material tank still has material, which directly leads to the failure of the next batch of materials to be distributed normally, affecting the production of the blast furnace

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