Mullite sand

Descripción del producto

Mullite sand is aluminum silicate refractory materials,normally used in stainless steel precision casting technology,Refractoriness around ***0 degrees,Mullite sand content more aluminum and lower iron to show that the quality is more better,content lower dust to show that the quality is more better.Mullite sand is made by kaolin through high heat sintering,Mullite sand origin is mainly distributed in the zhangqiu shandong and north of anhui and so on.

Mullite sand general type are ***6 orders,****0 mesh,****0 mesh,****0 mesh,*****0 mesh;Mullite powder type are **0 mesh,**0 mesh,etc.
In the precision casting process,
General surface plasma,zirconium powder:**5 mesh + silicon sol sand: zirconium sand **0 mesh
Back layer pulp:**5 mesh + silicon sol + mo to powder **0 mesh sand: mullite sand *0 to *0 mesh
Reinforcement layer:mo to powder **0 mesh + colloidal silica sand: mullite sand ****0 eyes
Sealing pulp:mo to powder **0 mesh + silicon sol

General chemical ingredients:*6%-Al2O***2%,*3%-SiO***1%,1.*-Fe2O***1.5%,Na2O+K2O*0.3%,CaO+MgO**0.6%,TiO**0.1%.

Physical index:Density*2.5g/cm3,Proportion *2.6g/cm3,Water content - 0.*3%,Refractoriness****0 degree,Heat decrement*0.**0.4%,Dust*0.***0.*3%，PH **9,hardness *8.0Mpa.
 
Advantages: Pouring casting,Easy to shell,Ametabolic,not easy to reduced scale,bright and clean,high yield.