β Scribed by Yih-Feng Chiu; Ming-Tzai Hong
No coin nor oath required. For personal study only.
Properties of Taiwan coking coal ~hr~a~aiwan coking coals, Shuangchi HV, Fusin &Wand Nanchuang MV, vvere investigated. Chemical, physical and petrographic analyses, carbonization tests and coke quality determinations were conducted for these coals. The results showed that these are good quality coking coals and have several properties in common as follows: very high calorific values (48000kcal/kg, d.b.), coking power, vitrinite content (> 94%), Hardgrova grindability index, and coke porosity. They are suitable for coat blending. The coat seams are very thin ~~~30-50 cm) and they QCCUI in very young coal-bearing strata fMiocene).
π SIMILAR VOLUMES
llO'C, and heat of wetting in methanol, of coal shockheated by an improvised method, namely by plunging a metallic retort containing the coal suddenly into a bath of molten solder maintained at 700Β°C.
Using regression analyses between the properties of coals and the strengths of their cokes several significant correlations are derived, which are useful to evaluate coals in the making of metallurgical coke. Slight but significant modification was necessary for their application to coal blends. For
Bituminous coals produced in the Ostrava-Karvina coal basin show considerable variation in their maceral composition, vitrinite reflectance and fluidity. There is a close association of the latter with the H/O atomic ratio expressing the different chemico-structural properties of vitrinites of lower
at room temperature. The mixture was added to water (500 ml) and the precipitated derivatives filtered. The acetylated sample was freeze-dried with benzene. The increase in solubility of the coal-derived liquids in benzene and chloroform owing to silylation and acetylation are shown in Tables 1 an