Method of removing sulfur and other contaminants from the coal i

Details Method of removing sulfur and other contaminants from the coal i Method of removing sulfur and other contaminants from the coal i

1982-03-03

1984-08-21

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

44 51, 210695, 110218, F23K 500, C10L 132

Patent

active

044663625

ABSTRACT:
An improved method of removing pyritic sulfur and other contaminants from the coil in a coal-oil slurry. In such a slurry, raw pulverized coal is suspended in fuel oil. In practicing the process, the slurry is heated to a temperature of about 220.degree. C., at which temperature hexagonal pyrrhotite is converted to highly ferromagnetic monoclinic pyrrhotite which can be removed by a magnetic separator.

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Ward, J. C., "The Structure and Properties of Some Iron Sulphides", pp. 175-206, Review of Pure and Applied Chem., vol. 20.
Maxwell et al., "High Gradient Magnetic Separation in Coal Desulfurization", IEEE Trans. on Mag., vol. Mag-14, No. 5, Sep. 1978, pp. 482-487.

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