The high specific gravity and high thermal conductivity of chromite provide a pronounced chilling effect. Chromite sand has a glossy black appearance. Chromite is generally used for steel casting to provide chilling. �°t is difficult to reclaim chromite sand since, if it becomes contaminated with silica, its refractoriness is seriously reduced.
Chromite Sand - AFS 50 Cr2O3 Fe2O3 MgO Al2O3 SiO2 CaO Na2O K2O 46-48% 24-27% 9-11% 15-18% 0.5-1.0% Max 0.05% Max 0.01% Max 0.01% Chromite Sand - AFS 45 Cr2O3 Fe2O3 MgO Al2O3 SiO2 CaO Na2O K2O 45% 29% 9-11% 16% 1.0% Max 0.2% Max 0.01% Max 0.01% Contact person: Danny Tao
Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.
Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.
AFS40/50 45/55 Chromite sand foundry grade We Import Chrome ore from South Africa,wash,dry,sieve,test,pack in China port,then export from China port. The specification is as follows: Cr2O3:46.0%min SiO2:1.0%max FeO:26.5%max CaO:0.30%max MgO:10.0%max Al2O3:15.5%max P:0.003%max S:0.003%max PACKING:1MT big bag SIZES:AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65
Foundry Chromite sand is a natural process product of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel, and carbon steel gradually shape the original sand core and coating.
Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.
Chromite Sand Chrome Ore Supplier Foundry chromite sand for foundry use as a highly fireproof sharpener for moulds and cores. Originally from South Africa. The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size. Physical composition Bulk Density 2.5-3g/cm3 Specific Gravity 4.0-4.8g/cm3 PH Value 7-9 The amount of the acid 2ML max Percent soil 0.1%max The sintered 1600 Filling Density 2.6g/cm3 melting temperature 2180°C
1. with excellent chilling characteristics, this characteristic does not reduce the thermal cracking, but can affect the temperature gradient, promote directional solidification without the use of cold iron. 2. Chromite is inert and does not react with other metal oxides. It is not wetted by manganese steel water. Chromite can be successfully used in manganese steel castings. 3. Linear expansion is small, and linear expansion is a factor that may cause sand inclusion in castings, so it may be used to mix wet sand mold for large castings.
chromite sand chrome ore supplier Foundry chromite sand for foundry use as a highly fireproof sharpener for moulds and cores. Originally from South Africa. The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size.
