迄今,太阳能电池的生产多使用价格昂贵的半导体用高纯度硅(99.9999％以上)。这种硅不仅价格高,且不易实现批量化生产。为此,日本川崎制铁株式会社高技术研究所与日本板硝子公司共同开发了使用冲天炉式电弧炉与碳的热还原工艺生产太阳能电池用高纯度硅的技术。新开发的二氧化硅还原炉炉体呈冲天炉型式(如附图)。粉末状的二氧化硅原料以Ar气作载气从插在炉体下部两根喷管喷向炉 So far, the production of solar cells and more expensive to use high-purity semiconductor silicon (99.9999% or more). This silicon is not only expensive, and not easy to achieve mass production. To this end, Kawasaki Iron and Steel Co., Ltd. Institute of High Technology and Japan’s Ban Naizhe jointly developed the use of cupola arc furnace and carbon thermal reduction process for the production of solar cells with high-purity silicon technology. The newly developed silica furnace body was a cupola type (pictured). Powdered silica raw material to Ar gas as a carrier gas inserted into the furnace from the lower two nozzles spray furnace