Blast furnace hot-blast stove orifice combination brick structure

Abstract

The invention provides a blast furnace hot-blast stove orifice combination brick structure relating to the technical field of thermal engineering. Based on a key technology of building an elliptical ring by ingeniously using T-shaped and L-shaped refractory bricks, according to the practical situation of the diameter size of a blast furnace hot-blast stove orifice, the combination brick structure is composed of an outer ring, a neighboring outer ring, an inner ring and a neighboring inner ring, wherein the outer ring and the neighboring outer ring of which the inner diameters are shaped like an ellipse are built by using one T-shaped refractory brick for the ring top and the ring bottom respectively and using L-shaped refractory bricks both sides of the ring; the inner ring and the neighboring inner ring of which the outer diameters are shaped like an ellipse are built by using sealed refractory bricks; the outer ring and the neighboring outer ring as well as the inner ring and the neighboring inner ring are fixedly connected by refractory cement in a mutual sticking state; the elliptical ring of the outer ring and neighboring outer ring is fixedly connected by refractory cement in a state of being sleeved with the inner ring and the neighboring inner ring; and the bending angle of the L-shaped refractory bricks is 1-180 degrees. The invention is used for the manufacturing of a blast furnace hot-blast stove orifice. The combination brick structure is scientific and ingenious in design, high in production efficiency and excellent in quality, and can resist a harsh environment.

Description

technical field [0001] The invention relates to a blast furnace hot blast stove nozzle combined brick structure, which relates to the technical field of thermal energy engineering; in particular, it relates to the blast furnace hot blast stove nozzle combined brick structure technical field. Background technique [0002] At present, there are common deficiencies and defects in the combination of traditional nozzles (including nozzles for hot air outlets, air inlets, gas inlets, flue inlets, and flue outlets, etc.) The disadvantages are: represented by the combination brick of the blast furnace hot blast stove hot blast outlet, its structural design is not scientific and reasonable, resulting in bricks falling off during the operation of the nozzle combination brick, the pipe is burned red (high temperature), and the heat energy is seriously lost, resulting in a large wall of the hot blast stove Brick collapse, short service life, low work efficiency, poor overall efficiency,...

AI Technical Summary

Problems solved by technology

[0002] At present, there are common deficiencies and defects in the combination of traditional nozzles (including nozzles for hot air outlets, air inlets, gas inlets, flue inlets, and flue outlets, etc.) The disadvantages are: represented by the combination brick of the blast furnace hot blast stove hot blast outlet, its structural design is not scientific and reasonable, resulting in bricks falling off during the operation of the nozzle combination brick, the pipe is burned red (high temperature), and the heat energy is seriously lost, resulting in a large wall of the hot blast stove Brick collapse, short service life, low work efficiency, poor overall efficiency, and even cause serious consequences such as overhaul of the hot blast furnace, long-term shutdown of the blast furnace, and serious impact on normal production.

With the intensification of blast furnace smelting and the increase of high wind temperature and high wind pressure, there are problems such as blowing wind at the short pipe of the hot blast outlet combined brick of the blast furnace hot blast stove, the furnace shell at the hot blast outlet is burned red at high temperature, and the service life is short. , has become the main bottleneck for the normal operation of the blast furnace hot blast stove

More specifically, the vicious consequences of severe loss of heat energy, easy damage to production facilities, serious impact on normal production, resulting in reduced output or even forced production stoppage are prominent technical problems facing the industry, and no one has been able to solve them so far.

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