Intermittent mineral powder sintering equipment and sintering method
A sintering equipment and intermittent technology, applied in the field of metallurgy, can solve the problems of high carbon monoxide concentration, large fuel loss, slow sintering speed, etc., and achieve the effect of high curing rate
Pending Publication Date: 2022-03-15
张亚玉
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Problems solved by technology
[0002] In the existing blast furnace ironmaking technology, iron ore is crushed and screened to obtain iron-rich ore powder, which is pelletized and sintered to make sintered charge, which is then smelted with coke in a blast furnace to make pig iron. The sintering material production process is made by calcining balls in a chain sintering furnace. The shortcomings of the chain sintering furnace calcination process in practical application are: semi-open sintering, large heat loss, large fuel loss, slow sintering speed, and poor sintering quality. Unstable, high concentration of carbon monoxide in flue gas, serious environmental pollution
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[0019] Step 1) Use the industrial computer to control the belt conveyor to feed materials to the left and right silos, the screw feeder at the bottom of the silo distributes materials evenly to the left and right sintering furnaces, and the roller tooth grate and spiral discharger at the bottom of the sintering furnace are in a static state , when the material level height of the left and right sintering furnaces reaches the design height, the material level sensor is triggered, the screw feeder stops feeding, the air inlet electric valve connected to the left row of hoppers is closed, and the smoke exhaust electric valve is opened;
[0020] At the same time, the air inlet electric valve connected to the right row of hoppers is opened, the right smoke exhaust electric valve is closed, the burner in the middle of the left and right sintering furnaces is ignited, and the right air inlet pipe provides air for the burner to mix with the gas or pulverized coal fed by the fuel deliver...
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The invention provides intermittent mineral powder sintering equipment and a sintering method.The equipment structurally comprises a belt conveyor, a left stock bin, a right stock bin, a left sintering furnace, a right sintering furnace, a spiral feeder, a combustor, an air inlet system and a smoke exhaust system, spiral feeders are arranged at the bottoms of the left and right stock bins and connected with the tops of the left and right sintering furnaces, roller tooth fire grates are horizontally arranged at the bottoms of the left and right sintering furnaces, the bottoms of the roller tooth fire grates are connected with left and right discharging hoppers respectively, the left and right discharging hoppers are connected with a spiral discharging machine through chutes, and an air inlet system and a smoke exhaust system are further connected with the left and right discharging hoppers. The sintering method comprises the steps that when the right sintering furnace is in sintering operation, the roller tooth fire grate at the bottom of the left sintering furnace is started, clinker is extruded and crushed through roller teeth to enter the left discharging hopper and then discharged through the spiral discharging machine to be conveyed to the blast furnace for standby application, and the left sintering furnace and the right sintering furnace intermittently and automatically work under control of the industrial personal computer.
Description
technical field [0001] The invention relates to the technical field of metallurgy, in particular to intermittent sintering equipment and a sintering method for mineral powder. Background technique [0002] In the existing blast furnace ironmaking technology, iron ore is crushed and screened to obtain iron-rich ore powder, which is pelletized and sintered to make sintered charge, which is then smelted with coke in a blast furnace to make pig iron. The sintering material production process is made by calcining balls in a chain sintering furnace. The shortcomings of the chain sintering furnace calcination process in practical application are: semi-open sintering, large heat loss, large fuel loss, slow sintering speed, and poor sintering quality. Unstable, high concentration of carbon monoxide in the flue gas will seriously pollute the environment. Contents of the invention [0003] The object of the present invention is to provide intermittent mineral powder sintering equipm...
Claims
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IPC IPC(8): C22B1/22F27D3/08F27D17/00F27D19/00C21B5/00
CPCC22B1/22F27D3/08F27D17/008F27D19/00C21B5/00
Inventor 张亚玉周圣芳王志强张家龙孟凡晓
Owner 张亚玉