Casting chromium ore sand Casting chromium ore sand, Originally from South Africa ,is a special kind of sand for casting , Casting chromium ore sand is a natural spinel mainly composed of chromite , Chromite sand foundry used as a highly fireproof sharpener for moulds and cores. Product Parameters CHEMICAL PHYSICAL Cr2O3 46.0%min Bulk Density 2.5-3g/cm3 SiO2 1.0%max PH Value 7-9 FeO 26.5%max The amount of the acid 2ML max CaO 0.3%max Percent soil 0.1%max MgO 10.0%max Percent Moisture 0.1%max Al2O3 15.5%max The sintered 1600℃ P 0.003%max Specific Gravity 4.0-4.8g/cm3 S 0.003%max Filling Density 2.6g/cm3 Cr/Fe 1.55/1 melting temperature 2180°C Regular size AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS 50-55 AFS55-60 AFS55-65 Packing & Delivery Packaging Details : 1mt big bag                                    accroding customer requirement Delivery Time : 5-7days after place an order with 4 handles and top spout Road Transfer by Logisitics Shipment by Sea way Application    foundry industry Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould making sand.   steel industry In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.   glass industry When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers