首页>
外国专利>
Process for converting ferro-phosphorus rich in silicon into ferro-phosphorus of high phosphorus content free from or poor in silicon
Process for converting ferro-phosphorus rich in silicon into ferro-phosphorus of high phosphorus content free from or poor in silicon
展开▼
机译：将富含硅的磷铁转化为无磷或贫硅的高磷含量的磷铁的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Ferro-phosphorus rich in silicon is converted into ferro-phosphorus poor in or free from silicon and having a high phosphorus content by mixing it, preferably in a fluid state, with tricalcium or other raw phosphate, preferably in excess, say about 50 per cent above the theoretical, and fusing in a non-oxidizing atmosphere, for example in an electric furnace. The phosphate is reduced by the silicon, and the free phosphorus formed is partly taken up by the ferro-phosphorus and partly escapes, being condensed or burnt to phosphoric acid. The silica produced forms a slag with the lime. The reaction commences at about 1450 DEG C. and is completed at 1500-1600 DEG C. The product may contain up to 30 per cent of phosphorus.ALSO:Ferro-phosphorus rich in silicon is converted into ferro-phosphorus free from or poor in silicon and having a high phosphorus content by mixing it, preferably in a fluid state, with tricalcium or other raw phosphate, preferably in excess, say about 50 per cent above the theoretical, and fusing in a non-oxidizing atmosphere, for example in an electric furnace. The phosphate is reduced by the silicon, and the free phosphorus formed is partly taken up by the ferro-phosphorus and partly escapes. The silica produced forms a slag with the lime. The reaction commences at about 1450 DEG C. and is completed at 1500-1600 DEG C. The product may contain up to 30 per cent of phosphorus.
展开▼
