发明名称 |
CONTROL OF CARBON BALANCE IN A SILICON SMELTING FURNACE BY MONITORING CALCIUM |
摘要 |
CONTROL OF CARBON BALANCE IN A SILICON SMELTING FURNACE BY MONITORING CALCIUM A method is described for controlling the carbon balance of a silicon smelting furnace by maintaining the concentration of calcium within the silicon formed in the furnace within a range of 0.4 to 2.0 weight percent. The calcium yield of the furnace is a rapid and sensitive indicator of the carbon balance of the furnace. More specifically, a calcium yield of less than 80 weight percent indicates a negative carbon balance in the furnace; a calcium yield of greater than 90 weight percent indicates an excess carbon balance in the furnace; and a calcium yield within a range of 80 weight percent to 90 weight percent indicates a furnace in carbon balance. A preferred embodiment of the present invention uses calcium yield in conjunction with a harmonic volts parameter and a electrode consumption measurement to further control carbon balance of the furnace.
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申请公布号 |
CA2121863(A1) |
申请公布日期 |
1994.11.08 |
申请号 |
CA19942121863 |
申请日期 |
1994.04.21 |
申请人 |
SCHOONOVER, DAVID E.;SILVER, RONALD F.;YOUNG, MARTIN D. |
发明人 |
SCHOONOVER, DAVID E.;SILVER, RONALD F.;YOUNG, MARTIN D. |
分类号 |
C01B33/025;C22B4/00;(IPC1-7):C01B33/027 |
主分类号 |
C01B33/025 |
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