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| Quantitative Analysis of Non-Crystalline and Crystalline Solids in Blast Furnace Slag |
| WANG Hai��feng, ZHANG Chun��xia, QI Yuan��hong |
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Abstract China is short of water seriously. But granulation of blast furnace slag (BFS) with water has many disadvantages, such as high water consumption and difficulty in heat recycling. So developing a new dry granulation technique to treat BFS is very important. The applicability of BFS directly depends on the content of non-crystalline solids in the slag after treatment. So it is of theoretical and practical significance to analyze the content of non-crystalline solids in the slag quantitatively and simply. Metallographical test is mainly adopted to quantify the non-crystalline in BFS now with the shortages such as making sample complexly, determining difficultly and personally. For the diffraction intensity of non-crystalline is proportionate to the content of non-crystalline in BFS, X-ray diffraction method was adopted to quantify the non-crystalline and the crystalline solids in BFS. The quantificational coefficient between the crystalline and the non-crystalline solids of BFS is 0.70 whose main composition is: w��CaO��38.2%��w��SiO2��35.7%��w��Al2O3��16.3%��w��MgO��8.3%. The relatively error of using X-ray diffraction instrument to quantitative analyse non-crystalline content of BFS is less than 1%.
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Received: 04 January 2010
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Corresponding Authors:
WANG Hai-Feng
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2011, Vol. 18 
