Influence of light upon cement
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Article
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1878
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Elsevier Science
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English
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## Phosphorus in Iron and Steel.--Melted pig iron and iron oxide, melted in a cupola, are mixed together, by Bell, in a revolving puddling furnace, at a moderate temperature, when the phosphorus oxidizes before the carbon has been absorbed. The purified iron is then withdrawn into a furnace, in wh