| 摘要 |
PURPOSE:To make the titled coal into ash composition of high-melting, by compounding Al2O3, a kaolin family mineral and the coal containing large quantities of these ingredients with low-melting point ash. CONSTITUTION:One or more kinds to be selected out of a group consisting of Al2O3, a kaolin family mineral and coal containing these are compounded with coal containing low-melting point ash according to MO-SiO2-Al2O3 composition in the ash (provided that MO means an inorganic metallic oxide other than the Al2O3 and SiO2). Then the composition of the ash to be contained in the coal after compounding shall satisfy a formula. The MO, however, in the formula means inorganic metallic oxide other than the Al2O3 and the SiO2. With this construction, the low-melting point ash in the coal can be turned into a high- melting state. |
