Coal-Magnetite Mixtures

To. study the variations of reactivities and selectivities of metal oxides with temperature in the coal-gasification step, the mixture of coal and metal oxide was slowly heated from 3(X) to 900°C at 3.3°C min under N2 gas flow. Figure 1 shows a typical temperature variations of the partial pressures of evolved CO and CO2 for magnetite. Evolution of CH4 was also observed but the partial pressure was negligibly small. The values of Pco... 

Figure 2. XRD patterns of magnetite and Ni(II),In(III)-ferrite after use for the coal-gasification step for 30min. The 0/C molar ratio in the mixture = 1.2.

Buckwalter (1977) investigated the transportation of very coarse coal (>50 mm or >2 in) in a magnetite-based water mixture. The magnetite consists of very fine particles but they... 

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