
| 項 目(mù) |  | 一級品 |  | 
| 外 觀 | 灰白色至淡黃灰色粉末或粒狀 | ||
| 初熔點,℃≥ |  | 170.0 |  | 
| 加熱減量, % ≤ |  | 0.40 |  | 
| 灰分, % ≤ |  | 0.30 |  | 
| 篩(shāi)餘物(150um), % ≤ |  | 0.10 |  |