Masonry method of bottom heat preservation and insulation bricks of annular heating furnace

Abstract

The invention relates to a masonry method of an annular heating furnace bottom by using heat preservation and insulation bricks, comprising the following steps: (1) arraying and masoning the bricks by taking a radial cut-off rule of a bottom steel-structural steel plate of the annular heating furnace as a starting point along an opposite direction, annularly pressing 8 bricks from the starting point, and arraying and masoning the bricks by using 8 bricks and 6 bricks as one group; (2) sequentially masoning by hanging lines along a radial direction, remaining an expansion gap with the width of 10 mm between every two masoning blocks, masoning and spreading aluminium silicate fibre blanket sides with the thicknesses of 12 mm in the gaps, and supplementing vacancies by using cutting bricks when masoning to an outer ring beam according to the steps; (3) staggering the expansion gaps of a second layer and a first layer 100 mm from each other top and bottom; and masoning the heat preservation and insulation bricks of a third layer to a fifth layer in a similar way. The invention has fast masonry and short construction period, effectively reduces the labor intensity of workers, enhances the production efficiency, reduces the construction cost and the heat loss of the annular heating furnace and prolongs the service life, therefore, the masonry method of the annular heating furnace bottom by using the heat preservation and insulation bricks accords with national policies and has energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the field of annular heating furnaces, in particular to a method for building thermal insulation bricks at the bottom of an annular heating furnace. Background technique [0002] In the construction process of the annular heating furnace, the masonry of the thermal insulation bricks at the bottom of the annular heating furnace is a very important process. At present, the masonry methods used for the thermal insulation bricks at the bottom of the annular heating furnace are generally based on the design size There are five floors, and each expansion joint of each layer of masonry blocks is made of cut bricks. This method exposes a series of problems in furnace building and maintenance of furnace bottom insulation bricks: (1). Due to the large amount of brickwork at the bottom of the furnace, each layer and each expansion joint masonry block needs to be cut to meet the design size, resulting in a large number of bricks that need ...

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Problems solved by technology

[0002] In the construction process of the annular heating furnace, the masonry of the thermal insulation bricks at the bottom of the annular heating furnace is a very important process. At present, the masonry methods used for the thermal insulation bricks at the bottom of the annular heating furnace are generally based on the design size There are five floors, and each expansion joint of each layer of masonry blocks is made of cut bricks. This method exposes a series of problems in furnace building and maintenance of furnace bottom insulation bricks: (1). Due to the large amount of brickwork at the bottom of the furnace, each layer and each expansion joint masonry block needs to be cut to meet the design size, resulting in a large number of bricks that need to be processed and cut, which increases the labor intensity of workers; (2). A large number of cut bricks need to be processed and cut, and most of the cut bricks do not meet the size and are thrown away, which wastes materials and increases costs; (3). A large number of cut bricks are processed, resulting in slow progress of masonry and long construction period; (4 ). A large number of processed and cut bricks are built on the furnace bottom. It is difficult to control the ash joints, which affects the quality of the masonry. At the same time, the integrity of the masonry bottom is poor, the service life is short, and the heat loss is large. platoon's environmental policy

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