An Evolving Method for Solar-Grade Silicon Production: Solvent Refining
Use of photovoltaic (PV) power generation has recently been increasing rapidly because it provides clean, renewable energy. While production of solar-grade silicon (SOG-Si) has been dominated recently by the modified Siemens process and a fluidized bed reactor process, obtaining a stable supply of S...
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| Veröffentlicht in: | JOM (1989) 2012-08, Vol.64 (8), p.946-951 |
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| container_title | JOM (1989) |
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| creator | Yoshikawa, Takeshi Morita, Kazuki |
| description | Use of photovoltaic (PV) power generation has recently been increasing rapidly because it provides clean, renewable energy. While production of solar-grade silicon (SOG-Si) has been dominated recently by the modified Siemens process and a fluidized bed reactor process, obtaining a stable supply of SOG-Si at lower cost is essential to further increases in PV installation. Metallurgical production offers benefits in productivity and possibly also in process cost. Several metallurgical processes, such as directional solidification, vacuum melting, and plasma melting, have been developed, but significant cost reductions or dramatic improvements in productivity are required to enable metallurgical refining to become the major route for SOG-Si production. The solvent refining process offers the possibility of cost reduction due to its high purification efficiency and low processing temperature. This paper reviews solvent refining processes for SOG-Si purification, emphasizing their advantages and identifying the problems that must be solved for process development. |
| doi_str_mv | 10.1007/s11837-012-0371-8 |
| format | Article |
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While production of solar-grade silicon (SOG-Si) has been dominated recently by the modified Siemens process and a fluidized bed reactor process, obtaining a stable supply of SOG-Si at lower cost is essential to further increases in PV installation. Metallurgical production offers benefits in productivity and possibly also in process cost. Several metallurgical processes, such as directional solidification, vacuum melting, and plasma melting, have been developed, but significant cost reductions or dramatic improvements in productivity are required to enable metallurgical refining to become the major route for SOG-Si production. The solvent refining process offers the possibility of cost reduction due to its high purification efficiency and low processing temperature. 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| source | Springer Nature - Complete Springer Journals |
| subjects | Acids Alloys Alternative energy Aluminum Boron Chemistry/Food Science Costs Directional solidification Earth Sciences Energy consumption Engineering Environment Fluidized bed reactors Grain boundaries Manufacturing Metallurgy Phosphorus Photovoltaic cells Physics Productivity Quality control Renewable resources Silicon Solids Solvents Temperature |
| title | An Evolving Method for Solar-Grade Silicon Production: Solvent Refining |
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