Chromium Ore Sand AFS45-55 Matallurgical Mineral
Chromium Ore Sand AFS45-55 is a kind of metallurgical mineral with excellent performance. It is mainly used in the foundry, steel, and glass industries. It is a crushed sand from naturally occurring spinel mineral with high density, high refractoriness, low thermal conductivity, even particle size.
【Product Name】: Chromite sand AFS45/55
【Other Names】: Chromium Ore Sand AFS45/55, foundry chromite sand, Cr-Sand, Chrome ore sand, Chromite AFS45/55,Arena de cromita AFS45-55,La arena de cromita,Arena cromita,cromite,Fundición cromita,refractarios de cromita,cromita refractaria,Areia de Cromita,cromita preço,Areia de Cromita,Chromite sand, Cr-sand AFS45-55,sable de chromite,KROMİT KUMU,Cromita refratária,Areia de minério de ferro cromado,Areia cromada,Sabbia di Cromite,Chromerzsand,Хромитовый песок,Хромит песок,Песок хромитовый, Песок хромитовый AFS 45-55, クロマイトサンド,クロマイト砂,クロム鉱石砂,Песок хромита AFS45-55，크롬모래 AFS45/55,크롬샌드,주조모래, 크롬샌드 주조모래
Chromium Ore Sand AFS45-55 Matallurgical Mineral Characteristics:
- High melting point, high sintering temperature
- Excellent thermal stability
- High density, high density –
- Medium Mohs hardness 5.5
- Strong thermal conductivity
- Low coefficient of thermal expansion
Technical Index of Chromium Ore Sand AFS45-55 Matallurgical Mineral:
- Chemicals
| Content | Guarantee Value | Typical Value |
| Cr2O3 | ≥ 46% | 46.70 |
| SiO2 | ≤ 1.0% | 0.61 |
| FeO | ≤ 26.5% | 26.2 |
| Cr:Fe | ≥1.5:1 | 1.55 |
| MgO | ≤ 10% | 9.8 |
| CaO | ≤ 0.3% | 0.3 |
| Al2O3 | ≤ 15.5% | 15.4 |
| P | ≤30 ppm | 28 ppm |
| S | ≤30 ppm | 27 ppm |
- Physical index:
| Mohs Hardness | 5.5-6 |
| Melting Point | 2180 ℃ |
| Sintering Point | ＞1800℃ |
| Specific Gravity | 4.0-4.8 g/cm3 |
| Bulk Density (LPD) | 2.5-3 g/cm3 |
| Color | Black |
| PH Value | 7-9 |
| Thermal conductivity | 0.63 W/M·K |
| Thermal Expansion Rate（1000℃） | 0.6% |
| Acid Demand Value (ADV) | PH3:≤ 3ML PH4: ≤ 2ML PH5: ≤ 2ML |
| Turbidity(NTU) | ≤ 200 |
| Soil content | ≤0.1% |
| Moisture | ≤0.1% |
Particle distribution of Chromium Ore Sand AFS45-55 Matallurgical Mineral:
| Sieve Mesh | Residue Percentage |
| +40mesh(425um) | 2.40% |
| +50mesh(300um) | 36.80% |
| +70mesh(212um) | 41.70% |
| +100mesh(150um) | 13.70% |
| +140mesh(106um) | 3.20% |
| Grain Fineness(GFN) | AFS 50.184 |
Applications of Chromium Ore Sand AFS45-55 Matallurgical Mineral:
- Large scale thick walled casting: Chromite sand combined with sand casting, furan resin self hardening sand, water glass self hardening sand and other processes are used for large volume and weight cast iron and steel castings. It can cool the castings in a predetermined order, which is conducive to improving the internal tightness of the castings and enhancing their strength. In addition, for the process of using silica sand, chromite ore sand can be used as surface sand instead of silica sand in key areas where porosity and veins are prone to occur, which can effectively prevent casting defects such as cracks and porosity.
- Lost foam casting. In lost foam casting, using chrome ore sand can prevent defects such as sand inclusion and sticking caused by quartz sand casting. Used for manufacturing castings such as valves and impellers made of high chromium cast steel and high manganese steel materials.
- Shell casting: Chromite sand can be used as a core sand material for complex components in shell casting, making sand cores. Used for producing high-precision, smooth surface 304316 stainless steel castings and carbon steel precision castings. It can effectively prevent the problem of sand sticking in the inner cavity of castings.
- Sand casting: Chromite sand can also be used for sand casting, such as sand casting, water glass self hardening sand casting, etc., to produce various large, medium, and small parts, such as pump bodies, pipelines, valves, etc.
Production Process:
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