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The granulation of blast furnace slag(BFS)with water quenching treatment has some disadvantages,such as high water consumption and difficulty for recovery heat.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 so far with the shortages such as complex sample,difficult determination,ect.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 quantitative coefficient between the crystalline and the non-crystalline solids of BFS is 0.70 of BFS whose main composition(mass percent,%)is:CaO 38.2,SiO2 35.7,Al2O3 16.3,and MgO 8.3.The relative error of X-ray diffractometer for quantitatively analyzing non-crystalline content of BFS is less than 1%.
The granulation of blast furnace slag (BFS) with water quenching treatment has some disadvantages, such as high water consumption and difficulty for recovery heat. Developing a new dry granulation technique to treat BFS is very important. 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 primarily adopted to quantify the non-crystalline in BFS so far with the shortages such as complex sample, difficult determination, ect. 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 quantitative coefficient between the crystalline and the non-crystalline solids of BFS is 0.70 of BFS whose main composition (mass percent,%) is: CaO 3 8.2, SiO2 35.7, Al2O3 16.3, and MgO 8.3. The relative error of X-ray diffractometer for quantitatively analyzing non-crystalline content of BFS is less than 1%.