鉻鐵礦砂是一種天然存在的尖晶石，主要由鉻和鐵的氧化物組成。它是鉻鐵生產的副產品，主要用於鑄造應用和玻璃生產。
典型化學分析 [%]：
| 三氧化二鉻 | 二氧化矽 | 氧化亞鐵 | 高的 | 氧化鎂 | 三氧化二鋁 | 磷 | S | 鉻/鐵 |
| ≥46.0 | ≤1.0% | 26.2 | 0.3 | 9.8 | 15.5 | 0.003 | 0.003 | 1.6：1 |
物理特性
| 法律 | 水 | 灰塵 | 熔點 | PH值 |
| ≤0.5% | ≤0.2% | ＜0.5% | 2150℃ | 7-9 |
主要應用：
鑄造業中的鉻鐵礦砂
其特性使該材料可在高強度灰鐵和鋼鑄造廠中用作型芯和模具
製沙。其高導熱性使其具有良好的冷卻性能，低熱膨脹性使其具有良好的尺寸穩定性。其鹼度接近中性，允許使用多種樹脂
黏結系統和無機黏結劑，具有高耐火度和寬篩分分佈。
鋼鐵工業中的鉻鐵礦砂
在鋼鐵生產中，鉻鐵礦砂也被用作填料，用於保護大型鋼包中的滑動水口。
玻璃工業中的鉻鐵礦砂
當磨成細粉時，鉻鐵礦砂可用於生產綠色玻璃飲料容器。
可用的生產尺寸
AFS15-25 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS45-55 AFS50-55 AFS55-60 AFS60-70 200目 325 目 400FS55-60 AFS60-70 200 325目 400FS
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