Coal-water mixture and process for producing same

Details Coal-water mixture and process for producing same Coal-water mixture and process for producing same

1994-05-13

1996-01-09

Willis, Jr., Prince

Fuel and related compositions

Solid carbonaceous fuel dispersed in a liquid medium

44608, 44620, C10L 910

Patent

active

054825172

ABSTRACT:
A coal-water mixture is disclosed which can be produced without using synthetic additives. After an acid such as a mineral acid is added to coal powder which is obtained by grinding coal such as jet coal or gas coal, water anti a plasticizer, composed of a humic acid derivative, are added to produce the coal-water mixture. The humic acid derivative is produced by grinding brown coal into brown coal powder, and adding and mixing caustic soda and sodium sulfite thereto. By the addition of the mineral acid to the powder of jet coal or gas coal, organic ferrum complexes which act as a stabilizer can be produced. With the use of coal powder in which coarse coal particles of a larger particle size are mixed with fine coal particles of a smaller particle size, the suspension can be further improved.

REFERENCES:
patent: 3956140 (1976-05-01), Nahm et al.
patent: 4403998 (1983-09-01), Schulz
patent: 4465495 (1984-08-01), Scheffee
patent: 4502868 (1985-03-01), Yaghmaie et al.
patent: 4969929 (1990-11-01), Platone et al.
patent: 5112363 (1992-05-01), Platone et al.

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