ladle filling sand chromite foundry sand 0-2mm
US $520.00-$550.00
Китайский поставщик, хром, хром, песок, хром, руда, хром, песок
- Category: Chrome Ore >>>
- Supplier: Henan Abrasivestocks Technology Co. Ltd.
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Product Overview
Description
Product Description
Chromium ore chromite sand
Chromite Sand is a special sand for foundry. It is a natural spinel dominated by chromite. After crushing, grinding and sieving, it is divided into prescribed grain size, and is suitable for sand for molding (core-making). Chromium ore sand can be divided into two grades according to chemical composition, first grade Cr2O3 (> 45%) and second grade Cr2O3 (> 35%).
Feature:
1. Heated Volume Stability
2. High thermal conductivity
3. Strong alkali resistance
4. Solid phase sintering, non-sticking sand
THE ADVANTAGE OF CHROMITE SAND
Comparing with silica sand, chromite sand can avoid most sand stick on the casting, therefore it can also save cost to make surface treatment. Moreover, chromite can be recycle used for several times upon to different technology.
Over all the chromite ore in the world, the one from South Africa are of the best quality level. So HAIXU Abrasive import original chromite ore from there and refine it to better purity to 46% Cr2O3.
Technical Data Sheet:
| CHEMICAL COMPOSITION | |
| Cr2O3 | ≥46.0% |
| SiO2 | ≤1.0% |
| FeO | ≤26.5% |
| CaO | ≤0.3% |
| MgO | ≤10% |
| AL2O3 | ≤15.5% |
| P | ≤0.003% |
| S | ≤0.003% |
| Cr/Fe | 1.55:1 |
| TYPICAL PHYSICAL PROPERTIES | |
| Hardness: | Mohs:5.5-6 |
| Melting Point: | Sublimes at 2180 ℃ |
| Sintering point: | >1800℃ |
| The sintered | 1600℃ |
| Specific Gravity: | 4.0-4.8 g/cm3 |
| Bulk density(LPD): | 2.5-3 g/cm3 |
| Color: | Black |
| PH | 7-9 |
| Percentage of free acid present in the sand | 0% |
| The amount of the acid | ≤2ML |
| Percentage of soil | ≤0.1 |
| Percentage of Moisture | ≤0.1 |
| AVAILABLE SIZES | |
How to Choose grit size for foundry?
Generally, the smaller casting needs to make, the finer grit size foundry adopted.The following frame shows it for reference:
Less than 500KGS
| 500-1000KGS | 1-10 Tons | 10-30 Tons | 30-100 Tons |
40-70 | 45-50 | 45-50 | 40-45 | 35-40 |
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