The bottom of the structure the general use of lightweight thermal insulation material as thermal insulation layer, using castable pouring work layer. With the bottom structure of refractory brick masonry structure is a traditional the integrity is good, long life and other advantages, but there are still some problems.
The overall casting after demoulding difficulty bottom (water seal groove template not taken); (2) the bottom ring expands outward shift; (3) drying by heat broke surface, bottom not easy bake, slightly careless, cause the bottom burst.
In view of the above question us on bottom structure and materials to improve the,
(1) the working layer adopts a fast drying anti explosion refractory castables, the castable short demoulding time, with quick drying explosion-proof function, is not easy to burst the oven, and high strength, good thermal stability, excellent properties of anti oxide skin good erosion resistance, is the ideal material for bottom layer of work, coupled with the unique construction technology, can ensure the bottom the working layer is not outward shift ring expansion.
(2) outside the ring edge using the perform, pouring working layer without formwork, thereby solving bottom construction not good demolishing difficulty, but also ensure the bottom of inner and outer ring between the girth size.
(3) Will work thickness, the thickness of thermal insulation layer thickened, improve the insulation performance of the bottom.
With the development of refractory industry technological progress, a number of high-quality refractory casting material is adopted, the structure of the furnace wall has improved, layer thickness becomes thinner gradually thickening, thermal insulation layer thickness, which is beneficial to improve the insulation performance of the furnace wall, but note that the particularity of annular furnace wall structure, i.e. furnace wall thickness ratio furnace wall width of some.
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