OCR Text |
Show o Table 6 Summary of Fusibility Correlations (Cont) Invest igator Gauger - 1951 Correlation TiO, • P.O. Calculate: S - 8i0, \ A - Al.o. T - CaO +0.7 MgO +2.25 Na,OH»5K Obtain: X8 - (8/8 • A • T)100 XA - (A/S + A • T)100 XT - (T/S • A • T)100 From ternary diagram 8, A, T, (Z) obtain softening temperature. Determine: X ± - (Fe,0,/S • A • T • Fe«O,)100 From empirical curves obtain ATpe Q subtract from softening temperature. Coal Type Coal No. Standard Deviation Correlation Coefficient Remarks Bituminous U.8. ASTM ash fusion and Eatep, Seltz, and Osborn - 1937 I ro Kovitskii, Karagodlna and Martynova - 1975 Obtain: O.S. XCaO from SiO, + Al.0. • Fe,0. • CaO • 100X. Determine hemispherical temperature from SiO, - A1„0, - Fe.O. ternary diagrams modified by CaO for specific CaO concentration. MgO compensated for by combining with CaO; Na.O compenaated for by subtracting 50*/percent Na,o. Kfu - (SiO. • AI.O./Fe.O, * CaO • MgO) Soviet t. - 1094 * 42.5Kfu (softening temperature) 1. - 1139 • A8.6Kfu (fluid atate) ±100* 1786 Kovitskii, Karagodina, and Martynova - 1975 K.i (SiO, • P,0./A1.0. * Fe.O. 4 CaO * MgO) Soviet i??dCo - 1085 - 318K, 42 iKv 12 03 55X ±90*F 15X *135*F Beasigmeur - 1963 RB - SiO, • A1,0 + MgO/CaO * Plotted against *DB + FB)/2 DB - Deformation Temperature FB - Fluid Temperature Fe.O, • K,0 French 94 Winegartner and (F.T., S.T., I.D.) • f51 independent U.S. Rhodes - 1974 variables including Alfit, SiOs, Fe,Og, CaO, Eastern MgO, Najo, K 0, and various groupa of the Western same. Garner - 1964 Deposit Weight • X where: X, - 0.030 TiO, • 0.09 Fe,0, • 0.061 CaO • and 0.264 MgO • 0.423 Na,0 - 10.6 X, - 0.044 TiO,«»»* • Fe,0,**»» • CaO*-'*' . MgO*-*** . Na,o*''*« Australian Applicable only to Australian coals. However, most practical correlation as chemistry directly relate to full-scale outage based on pilot plant tests. |