| 1 | It is released in non-coal mines, e. g. tin, iron, fluorspar, uranium. | |
| 2 | Refining is achieved by the addition of lime, fluorspar and iron oxide to the melted steel. | |
| 3 | The proposed method was fast, accurate, simple, and has been applied to determine silicon dioxide content in the fluorspar in the routine determination wi. | |
| 4 | A layer including a zeolite, a conductive agent, and a binder resin is formed on a surface of the control electrode. | |
| 5 | Complaint referred to the United States and Europe, including the raw material bauxite, coke, stone fluoride, magnesium, silicon carbide, metal silicon, phosphorus and zinc. |
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