Furnace stopping method for blast furnace anatomy research and spray gun device

Abstract

The invention discloses a furnace stopping method for blast furnace anatomy research and a spray gun device. The furnace stopping method is characterized by comprising the following steps that 1) thespray gun device for spraying a filling material into a blast furnace tuyere rotating area is designed and manufactured; 2) short-term damping down of a blast furnace is performed, the spray gun device is arranged to a part of tuyeres of the blast furnace, re-blowing of the blast furnace is performed after the spray gun device is finished arranging; 3) blast furnace blast temperature canceling isperformed, it is ensured that the theoretical combustion temperature at the front of the tuyeres is not higher than the melting point temperature of the filling material; 4) the spray gun device is connected with a spraying machine, and the filling material is sprayed into the blast furnace tuyere rotating area; 5) after the blast furnace damping down and stopping, coal gas is cut off effectively,and blast furnace cooling equipment keeps normal cooling; 6) N2 gas is introduced into the blast furnace, and furnace burden cooling is performed; and 7) a thermocouple is inserted, the thermocoupleis connected into a central control computer to allow the temperature field change to be observed until furnace cooling is finished. According to the furnace stopping method for the blast furnace anatomy research and the spray gun device, the original state of each section of furnace burden of the blast furnace can be well reserved, research and analysis are facilitated, and a relatively good application prospect is achieved.

Description

technical field [0001] The invention belongs to the technical field of blast furnace anatomy research, and more specifically relates to a blast furnace shutdown method and a spray gun device for blast furnace anatomy research. Background technique [0002] Dissecting the blast furnace can maximize the understanding of the structure, shape, proportion and distribution of the charge in the blast furnace, and can understand and grasp the changes in the charge elements in the furnace with the operating state. Reasonable shutdown of the blast furnace can preserve the original state of the charge in each section of the blast furnace to the greatest extent, including the massive zone, the reflow zone, the dead material column in the hearth, the tuyere swirl area, the dead iron layer, and the eroded shape of the hearth, and the coke in the blast furnace The research on the radial change of melting loss in blast furnace, the distribution of harmful elements and the influence on charg...

AI Technical Summary

Problems solved by technology

At present, the permanent shutdown of small blast furnaces after capacity reduction provides an excellent opportunity for blast furnace anatomy, with less investment and sufficient research time. The determination of the shutdown method for blast furnace anatomy research is the key, and there is no in-depth research on this aspect in the prior art.

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