请问硅在炼铁中有什么用途?用量大么?
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![请问硅在炼铁中有什么用途?用量大么?](/uploads/image/z/3251855-47-5.jpg?t=%E8%AF%B7%E9%97%AE%E7%A1%85%E5%9C%A8%E7%82%BC%E9%93%81%E4%B8%AD%E6%9C%89%E4%BB%80%E4%B9%88%E7%94%A8%E9%80%94%3F%E7%94%A8%E9%87%8F%E5%A4%A7%E4%B9%88%3F)
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