Cisdi Engineering Co., Ltd

Cisdi Research and Development Co., Ltd.

Zhan Gao

Qiming Huang

Weizhi Shi

Cunzhen Tan

Yuchuan Zhang

Yongmen Wang

Wei Lin

Lei Al

Chunting Liu

Chao Liu

A sealed feeder device utilized in an electric arc furnace (), and a flue gas and temperature control method. The sealed feeder device comprises a sealed feeding chute () having an outlet sealedly communicating with a side wall of the electric arc furnace (), and a material blocking sealed arc-shaped door () disposed in the sealed feeding chute (). The material blocking sealed arc-shaped door () separates the sealed feeding chute () into a cold steel scrap storage chamber () and a material feeding and dedusting chamber (), and is operated by a driving mechanism () to separate or connect the cold steel scrap storage chamber () and the material feeding and dedusting chamber (). The method comprises: adopting the feeder device to divide the flue gas of the electric arc furnace () into two paths, and controlling, by a flue gas adjustment device (), a ratio of a flue gas flow from a flow-splitting dust removal pipe () to that from a dust removal pipe () to obtain a required flue gas mixture temperature.

Feeder device utilized in electric arc furnace, and flue gas and temperature control method

The present invention belongs to the technical field of metallurgy, and discloses a horizontal continuous feeding preheating device and an enhanced preheating method therefor. The scheme comprises that two dust removal ports are arranged at the front and rear parts of a horizontal continuous feeding preheating duct, and the horizontal continuous feeding preheating duct is divided into an enhanced preheating area and a flue gas preheating area by the two dust removal ports arranged at the front and rear parts of the horizontal continuous feeding preheating duct; burners are installed in the enhanced preheating area, and the two dust removal ports are connected with a flue gas adjusting distributor respectively by a flue gas pipeline the steel scrap preheating efficiency of the burners and electric arc furnace flue gas is increased by controlling the flow rate and temperature of mixed flue gas.

Continuous horizontal-feeding preheating device and preheating enhancement method thereof

The present invention discloses a scrap steel preheating type electric arc furnace and a method for improving a heating cold region of a side wall charging electric arc furnace. This invention includes an electric arc furnace body and an inclined scrap steel preheating chamber. An included angle between the inclined scrap steel preheating chamber and a horizontal plane is 30&#xb0; to 65&#xb0;. Flue gas enters the inclined scrap steel preheating chamber, penetrates through the material blocking tooth rake and the scrap steel and is sucked out. The preheated scrap steel slides to a center of the electric arc furnace body along a slot bottom of the inclined scrap steel preheating chamber. The present invention overcomes a problem of lateral stacking of the side wall charging electric arc furnace, reducing impact force of the scrap steel to the device and greatly enhancing reliability of the device.

Steel scrap preheating-type electric furnace and method for improving heating cold area of side wall charging electric arc furnace

A tipping hopper includes a hopper body, hopper rotating supports and a tipping mechanism. The tipping mechanism comprises a connecting rod and a crank. One end of the connecting rod is hinged on the hopper body, and the other end is hinged with one end of the crank; and the other end of the crank is hinged on a crank rotating support through a crank rotating shaft. By optimizing a crank starting point and a crank end point, ensure hopper's position of receiving and discharging material is arranged at or near a dead point of the tipping mechanism so that the working condition of an impact force borne by a speed reducer device is optimized when the tipping hopper is charged and discharged. The mechanism also optimizes the position of the center of gravity of the hopper body and the position of the center of gravity of a charged hopper, so that the center of gravity of the hopper body is located between a hopper rotating hinge point and the connecting rod support hinge point near the hopper rotating hinge point. A force amplification effect of the connecting rod is used to greatly reduce the requirement for the output moment of the speed reducer, thereby greatly reducing the weight of the speed reducer device and the power of a tipping motor and saving motor power and energy consumption of a hoisting system.

Tipping hopper and control method thereof

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Chongqing, China

Zhan Gao