Method for blow-in airtight pressure resistance test of large-scale blast furnace

Abstract

The invention discloses a method for blow-in airtight pressure resistance test of a large-scale blast furnace, which comprises the following steps of: making a blast furnace blow-in airtight test scheme, confirming necessary conditions before pressure test and leakage test, controlling and abnormally processing a pressurizing leakage test process, preparing a leakage checking tool, training personnel and the like, before a blast furnace is blown in and put into production, performing pressure test and leakage detection on working conditions of a blast furnace body, a hot blast stove body and an air supply and gas treatment system, using different pressures step by step according to the working conditions of all parts, arranging personnel in the pressure test process to check leakage in time, making marks and records, treating leakage points after pressure reduction or damping down of the blast furnace, and then performing pressing leakage detection again until the test is qualified. According to the method, unsafe factors in the airtight pressure-resistant test link can be reduced, accidents are prevented, the process of smooth blow-in, ignition and production of the blast furnaceis accelerated, and reliable guarantee is provided for rapid adaptation to the high-pressure smelting environment and normal production after the blast furnace is put into production.

Description

technical field [0001] The invention relates to a method for an airtight withstand voltage test of a large-scale blast furnace. Background technique [0002] The airtight pressure test of the blast furnace system is an important process in the construction of a modern large-scale blast furnace project. Before the blast furnace is put into operation, the airtight pressure test is passed, and the leakage point is detected and then plugged to check whether the process conditions of the entire blast furnace system meet high-pressure production. It is an important means to ensure the normal production of the blast furnace. Bayi Iron and Steel New Zone has three buildings A, B, and C with an area of ​​2500m 3 Large-scale blast furnaces, the three blast furnaces have the same configuration, are equipped with 3 iron ports, 30 tuyeres, and adopt belt feeding, PW type string tank top without charging bell, ceramic cup hearth, thin fireplace lining, advanced furnace body A series of ...

AI Technical Summary

Problems solved by technology

However, due to the late start of the large-scale blast furnace, the environment of the blast furnace airtight pressure test operation site is more complicated, and there are many high-altitude and high-temperature operations, and the airtight pressure test operation control technology is not perfect, and the airtight pressure test is added. Unsafe factors will cause accidents, which will delay the smooth start-up and ignition of the blast furnace.