The Mould Washes for Casting Mould using the Dust of Mullite·Corundum Ceramic Foundry Sand collecting at Dust Collector as Refractory

摘要

Molds are manufactured by using casting sand to inject molten steel of cast steel and cast iron castings.Since sand (SiO2) has been used as casting sand for the production of castings, the quality of dust and low dust caused by low silica sand Recently, in order to improve the environment of the foundry, a number of foundries using mullite corundum ceramic casting sand instead of silica sand are increasing. The ceramic casting sand is reused around 97% by the regeneration treatment, and about 3% of the throughput of the ceramic casting sand is regrind into fine powder and collected through a dust collector and discarded.;The present invention is a ceramic molding sand fine powder collected through a dust collector is a material composed of mullite and Corundum (Mullite · Corundum) powder whose main component is a melting point of 1850 ℃ to collect the mold for the molding material used as a refractory material of the figure will be.;When casting high melting point metal from 1,300 ℃ to 1,600 ℃ using mold made of silica sand (SiO ₂ ) or ceramic casting sand, etc., the mold is protected and reaction between the high melting point metal and the mold, sintering or washing, or molten metal The present invention relates to Mullite Corundum moldings which prevent penetration and facilitate post-treatment of castings. In order to exhibit excellent applicability, adhesion, fire resistance, and heat insulation, the figure is composed of a refractory base material composed of finely divided mullite and corundum fine particles collected from a dust collector, a binder, a floating agent, and a solvent.;Mullite, Corandum, Mold Shaper