Formwork masonry and insulation of refractory castable sensation in terms of construction, the construction preparatory work subordinate. Former castable furnace wall construction, first laying mineral wool board, calcium silicate board or refractory fiber blankets, install metal coupling Heilongjiang Gravity corundum castable, placed anchor bricks, second, insulating firebrick or masonry irrigation Lightweight refractory castable; Third, the branch set up templates. Face first oiled template or note paper, and then try to be the anchor brick work face, good parry. Each branch set template height of 600 ~ 1000mm, to facilitate loading and stir molding. In case of mold, the first mold support, then support is provided template. Insulation surface should note spreading plastic film to prevent it from absorbing water, castable affect performance. At higher furnace wall, masonry insulation should also be undertaken layered corundum castable Gravity prevent sensation when toppings, causing tilting insulation layer. Castable roof construction, the proportion according to the design requirements, put the whole body template provided firm support, and then coated with oil; then hanging brick with a metal coupling member is hung from the crane beam, some coupling required wedge The hanging tiles fixed Jilin Gravity corundum castable, while others need fixing. Hanging brick lining working surface shall be perpendicular to settle, spacing the bottom end surface of the mold surface is 0 ~ 10mm, in which the end face brick hanging more than 60% shall be in contact with the mold surface. When the distance between them is greater than 10mm, should be regulated metal couplings, so that meet the requirements. When the event channel, its tires should be installed with a firm, and then set the template support. Cement volume in 3-8%, CaO content is generally referred castable low cement castable between 1-3%. The CaO content is less than 1.0% of castable called castable. The traditional common refractory castable cement content of up to 10 to 30 percent, while the low cement, ultralow cement matrix is ??used with castable main material of the same or similar chemical composition of ultrafine (particle size less than 5um) to replace part or most of the cement , while adding a small amount of dispersing agent (superplasticizer) and a certain amount of delayed action retarder preparation. Its advantages are: 1) low calcium oxide content castable, can reduce material generated eutectic phase, thereby increasing refractoriness, high temperature strength and slag resistance; 2) less after curing the resulting molded cement hydrates when there is no heating and baking a lot of hydration leaving key sabotage strength decrease in temperature in Inner Mongolia Gravity corundum castable, but with the increase of heat treatment temperature gradually sintering, strength gradually improved; 3) castable water demand is greatly reduced, so low porosity, high bulk density. Main purpose: low cement castable, castable temperature than the same material used ordinary refractory castable high temperature. Clay and high alumina low cement castable can be used in a heating furnace, soaking furnace and other heat treatment furnace and kiln lining. Mullite low cement castable can be used for a variety of high-temperature burner lining, furnace cooling pipe wrap lining. Corundum corundum and chromium containing low cement castable can be used in some parts of the outer lining of the molten steel refining apparatus body, but also for frequency induction furnace lining, petrochemical catalytic cracking reactor, high temperature resistant linings. Low cement Al2O3-SiC-C castable substance used as blast furnace iron ditch, cupola iron trough, hot metal pretreatment overall dusting gun lining like.