Abstract: A method of iron smelting in blast furnace with high temperature coal gas comprises the following steps: (1) charging raw materials consisting of pellets, basic sintered ore, coke and limestone into a blast furnace from top of the furnace, in which the amount of the coke is 125-210 kg per ton of molten iron, raw materials containing iron is composed of 90% pellets and 10% basic sintered ore, and ore grade is above 62%; (2) preheating coal gas to 1250-1450° C. with an horizontal high temperature blast heater, blowing the preheated coal gas having a thermal value of 11.7-12.5 mj/m3 into the blast furnace from top of the furnace at an amount of 1000 m3 per ton of molten iron and a pressure of 0.1-0.6 MPa; blowing air preheated to higher than 1250-1450° C. at an amount of 300-400 n m3 per ton of molten iron. The coal gas used in the method acts as a reducer and fuel, as a result the coke consumption would be reduced.

Abstract: A method of iron smelting in blast furnace with high temperature coal gas comprises the following steps: (1) charging raw materials consisting of pellets, basic sintered ore, coke and limestone into a blast furnace from top of the furnace, in which the amount of the coke is 125-210 kg per ton of molten iron, raw materials containing iron is composed of 90% pellets and 10% basic sintered ore, and ore grade is above 62%; (2) preheating coal gas to 1250-1450° C. with an horizontal high temperature blast heater, blowing the preheated coal gas having a thermal value of 11.7-12.5 mj/m3 into the blast furnace from top of the furnace at an amount of 1000 m3 per ton of molten iron and a pressure of 0.1-0.6 MPa; blowing air preheated to higher than 1250-1450° C. at an amount of 300-400 n m3 per ton of molten iron. The coal gas used in the method acts as a reducer and fuel, as a result the coke consumption would be reduced.

Abstract: A kind of horizontal type high-temperature hot-blast stove, it includes a furnace body (6), a ball bed (4), a cold air opening (1) and a hot air opening (9). Combustion chambers (2) are respectively set on the left side and right side in the furnace body (6). And several burner guns (3) are set on the bottom of the furnace body (6) which locates on the lower part of the combustion chambers (2). The cold air opening (1) is set on the left side of the furnace body (6), and the hot air opening (9) is set on the right side of the furnace body (6), and the cold air opening (1) and the hot air opening (9) are respectively communicated with the combustion chambers (2) which are set on the left side and right side in the furnace body (6). The ball bed (4) is set in the middle part of the furnace body (6). The configuration of the two sides of the ball bed (4) is a checker brick configuration, and a manhole (5) is set on the top of the furnace body (6).

Abstract: A dry coal powder gasification furnace comprises a furnace body. The furnace body consists of a gasification furnace body for hot and dirty coal gas (1) and a hot and dirty gas reforming and cleaning furnace body (2). There is a gasification chamber (3) in the upper part of the gasification furnace body (1) and a settling chamber (4) in the lower part of the gasification furnace body (1). There are multiple coal powder nozzles (9) at the upper part of the gasification furnace body (1). One ends of the multiple coal powder nozzles (9) are connected to the gasification chamber and another ones are connected to a coal-spraying pipe (8). The coal-spraying pipe (8) is connected to a screw feeder (7). The screw feeder (7) is mounted below a loading lock hopper (6). Multiple gas nozzles (10) connected to the gasification chamber (3) are mounted at the upper part of the gasification furnace body (1) and below the coal powder nozzles (9).

Abstract: Process and equipment for blast furnace ironmaking using pure oxygen and gas The process for blast furnace ironmaking using pure oxygen and gas includes putting a mineral aggregate consisting of pellet, alkaline sinter, coke and solvent into the furnace from the furnace top, wherein each ton of iron is assigned with coke of 170-200 kg; blasting pure oxygen into the furnace, wherein each ton of molten iron is blasted with oxygen of 120-200 Nm3, and ejecting gas that is pressured and preheated by the ball type hot blast stove into the furnace so as to directly reducing pellet and iron-containing material, wherein the gas is preheated to a temperature raging from 900° C. to 1150° C. and to a pressured up to 0.1-0.6 MPa; purifying and cooling the gas produced in the reducing reaction, and transmitting the gas into a residual pressure power generation device via tubes to be reused and is recovered into a gas cylinder or recycled for use.