Air bag type pressure regulating process for feeding of high-pressure smelting furnace

Abstract

The invention relates to a pressure regulating process for the feeding of a high-pressure smelting furnace in the field of iron and steel industry, in particular to an air bag type pressure regulating process for the feeding of the high-pressure smelting furnace. The process is characterized by comprising the following steps of: 1, serially connecting an air bag type pressure regulating device ata pressure regulating outlet of a feeding tank; 2, when the high-pressure smelting furnace is just put on production, introducing high-pressure nitrogen into an air bag, then compressing the volume of a gas at one side of the feeding tank to ensure that the pressure of the feeding tank raises to be same with the pressure in the high-pressure smelting furnace, opening a discharging gate at the lower part of the feeding tank so that materials can be fed in the high-pressure smelting furnace; and 3, when pressure is discharged, directly dispersing high-pressure nitrogen in the air bag towards air to ensure that the volume of the gas at one side of the feeding tank is increased, after the pressure is reduced to atmosphere pressure, opening a receiving gate on the feeding tank so that the materials are fed in the feeding tank, and circulating the steps to complete the process of regulating the pressure. The process can achieve the purposes of zero emission of the gas in a pressure regulating process, complete internal circulating utilization of the gas, and no pollution to the environment.

Description

technical field [0001] The invention relates to a pressure regulating process used for charging high-pressure smelting furnaces in the iron and steel industry field. Background technique [0002] The development of the iron and steel industry requires process optimization from the entire production process to achieve energy saving and consumption reduction, meet increasingly stringent environmental protection requirements and brutal market competition, reduce costs, and improve the vitality of iron and steel products. Taking the blast furnace ironmaking process as an example, during the charging and discharging process of the blast furnace top equipment, the weighing material tank is completed under the alternating working procedures of pressure equalization and release. N 2 Pour into the weighing material tank, and after filling the material, the pressure equalizes to the same pressure as the blast furnace so as to discharge the material into the blast furnace; when releas...

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Problems solved by technology

[0003] In the emerging non-blast furnace ironmaking technology, the charging pressure adjustment process similar to the current blast furnace is also adopted, which wastes a lot

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