Purging device and process of blast furnace batch tank weighing system

Abstract

The invention discloses a blast furnace charging tank weighing system purging device and process. The purging device includes a corrugated compensator purging mechanism and a lower valve box purging mechanism; the corrugated compensator purging mechanism includes a first pipeline, The first manual cut-off valve, the first valve, the first pressure gauge, the first one-way valve and the first pressure relief valve are sequentially arranged on the first pipeline from the outside to the inside, and the outer end of the first pipeline is connected with the first pressure relief valve. The nitrogen source is connected, the inner end of the first pipeline is connected with the inner cavity of the corrugated compensator; A manual cut-off valve, a second valve, a second pressure gauge, a second one-way valve and a second pressure relief valve, the outer end of the second pipeline is connected to the nitrogen source, and the inner end of the second pipeline is connected to the Cavity connections. The invention can effectively prevent the dust-containing gas from flowing into or diffusing into the inner cavity of the corrugated compensator and the gap between the bottom of the chute of the material flow regulating valve and the shell of the lower valve box.

Description

technical field [0001] The invention relates to a blast furnace top material tank weighing system, in particular to a blast furnace material tank weighing system purging device and process. Background technique [0002] In blast furnace production, the temperature in the center of the blast furnace top space is as high as about 700°C, and the pressure in the top space is about 2.5MPa. Raw materials are loaded into the blast furnace from the outside of the furnace at atmospheric pressure, and the raw materials are distributed on the material surface according to the operator's requirements. superior. The above functions are completed by the bellless furnace top, which has many forms, among which the old-fashioned tank-joining bellless furnace roof is an early structural form. In the charging process, the weighing system needs to complete the weighing of the weight of the tank and the raw materials it contains, which is used to control the charging process and prevent acciden...

AI Technical Summary

Problems solved by technology

However, because the working space is very narrow, this method can only remove a part of the ash, if no measures are taken, the ash accumulation period will be shorter and shorter

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