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About refractory castbale precast block

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-10-15     

Amorphous refractory prefabricated blocks, mainly made of refractory castable and refractory plastic and other materials, its classification has castable prefabricated blocks and plastic prefabricated blocks;There are aluminate iron and steel, sodium silicate, phosphoric acid and aluminum phosphate, clay and low iron and steel, etc.According to the aggregate varieties, it is divided into high alumina, clay, silicon and rigid jade prefabricated blocks.According to the forming mode, it is divided into sensational forming, shocking pressurizing forming and ramming forming prefabricated block.The mass of prefabricated blocks ranges from tens of kilogrammes to several tons, so they are divided into heavy, medium and miniature prefabricated blocks;The precast blocks are provided with reinforcing bars and anchor pieces, which are divided into conventional precast blocks, steel precast blocks and anchor pieces.

In industrial kilns and heating facilities, using prefabricated blocks to build furnaces can realize machine lifting, save labor and energy, shorten construction period and mobilize blast furnace work rate.The history of building blast furnace, hot air furnace, blast furnace, electric top, shaft furnace and pelletizing furnace with prefabricated block has been widely used in China.In recent years, good results have been achieved in lining the cast iron and slag ditches of medium and miniature blast furnaces with precast blocks of refractory castable.The prefabricated block factory production, low temperature treatment after the factory.Therefore, the lining speed is fast, does not need to bake, can be used, furnace age is long, is the key direction of development in the future.Should be issued, all refractory castable and refractory plastic and other materials, can be made into prefabricated blocks.Because the production premise is better than the site construction, so the function is also mobilized, common can see the aforementioned related function.

Serial Numbers 1 and 2 are ca-50 steel and phosphate clayey castable precast blocks, whose aggregate is 70% of clay clinker particles less than 10mm, 15% and 30% of high-alumina powder less than 0.09mm, and 15% and 2.5% of ca-50 steel respectively.The former admixture of decoction, water dosage for 10%.The latter used phosphoric acid with a purity of 42.5% as the binding agent with a dosage of 13%.No.3 and 4 are the precast blocks of aluminum-magnesium castable in sodium silicate. The aggregate and powder are grade 1 bauxite clinker, the aggregate consumption is less than 60% of 8mm, the powder consumption is 30% and 26% respectively, and the magnesite powder for brick making is 10%.Cm-3 used 9% sodium silicate, the latter added 4% flake graphite.Serial Numbers 5 and 6 are respectively low steel and ultra-low steel and high aluminum castable precast blocks.The shape of prefabricated blocks, mainly rectangular, long line, arch and ring, etc., are exotic products.Refractory castable precast block the function of serial number 123456 chemical ingredients / % Al2O3SiO2Fe2O348411. 256351.1678 (MgO style) 749 (MgO style) 3 (C) (CaO) 64280.9 70151.6 (CaO) pressure intensity/Mpa110 ℃ 1000 ℃ 1600 ℃ high temperature flexural intensity / 2520342230422830134202530283860303442 Mpa after burning linear change / 1.0 0.201.2%1400 ℃ 1400 ℃Fire resistance /℃ apparent porosity /% volume density/g·2.541790 2.60 cm - 3 > 167017-2.241710163.321710212.481770182.601790 precast block and proportion, should be in accordance with the size and blast furnace lining body thick degree, try to decline specifications, thriftiness touch panels, facilitate the supervision and construction;The prefabricated block for hoisting and building furnace should be 1~3t in single weight.The single weight of the prefabricated blocks for manual transportation and furnace building should not be more than 30kg;The proportion of precast blocks, width and thickness wind direction are 116mm and 68mm respectively, and the proportion of precast blocks is calculated by subtracted from the proportion of masonry joints.The width of the prefabricated block on the top of the furnace shall not be less than 300mm, depending on the length of the furnace.The height of prefabricated block of furnace wall should not be more than 400mm.The seam width of the two prefabricated blocks is 3~8mm.When a hole is encountered on the precast block, the tire should be inclined to 1%~2% and should be easily demolished.Heavy prefabricated blocks shall be equipped with lifting rings, the vertices of which shall be kept away from the damp surface as far as possible, the spacing shall be greater than 200mm, and the buried thickness shall be 100~200mm.With the increase of the single weight of prefabricated blocks, the radius of the rings also increases.



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