초록 ▼

A novel grinding mixture useful for preparing a solid-liquid slurry is disclosed. This grinding mixture contains from about 60 to about 82 volume percent of carbonaceous material (such as coal and/or coke), from about 18 to about 40 volume percent of carrier liquid (such as, e.g., water and/or oil),

A novel grinding mixture useful for preparing a solid-liquid slurry is disclosed. This grinding mixture contains from about 60 to about 82 volume percent of carbonaceous material (such as coal and/or coke), from about 18 to about 40 volume percent of carrier liquid (such as, e.g., water and/or oil), and from about 0.01 to about 4.0 weight percent of dispersing agent. The grinding mixture has a pH of from about 7 to about 12. There are at least two consists in the grinding mixture. From about 2 to about 50 weight percent of the particles in the grinding mixture have a median particle size of from about 0.5 to about 40 microns. From about 50 to about 98 weight percent of the particles in the grinding mixture have a median particle size in excess of 40 microns. There is also provided a process for preparing a liquid-solid slurry wherein the grinding mixture is ground until a slurry is produced whose particle size distribution is in accordance with a specified “CPFT”formula.

대표청구항 ▼

A grinding mixture comprising from about 60 to about 82 volume percent of solid carbonaceous material, from about 18 to about 40 volume percent of carrier liquid, and from about 0.01 to about 4.0 weight percent, by weight of dry solid carbonaceous material, of dispersing agent, wherein: (a) said gri

A grinding mixture comprising from about 60 to about 82 volume percent of solid carbonaceous material, from about 18 to about 40 volume percent of carrier liquid, and from about 0.01 to about 4.0 weight percent, by weight of dry solid carbonaceous material, of dispersing agent, wherein: (a) said grinding mixture has a pH of from about 5 to about 12, (b) said grinding mixture contains at least two consists of solid carbonaceous material, (c) from about 2 to about 50 weight percent of said solid carbonaceous material is comprised of carbonaceous particles with a median particle size of from about 0.05 to about 40 microns, and (d) from about 50 to about 98 weight percent of said solid carbonaceous material is comprised of carbonaceous particles with a median particle size greater than about 40 microns.