초록 ▼

A stable slurry containing carbonaceous solid material (such as coal or coke) carrier liquid (such as water or oil), and dispersing agent is disclosed. Also disclosed is a method of preparing the slurry by grinding a carbonaceous solid material at a high solids content of at least 60 volume percent

A stable slurry containing carbonaceous solid material (such as coal or coke) carrier liquid (such as water or oil), and dispersing agent is disclosed. Also disclosed is a method of preparing the slurry by grinding a carbonaceous solid material at a high solids content of at least 60 volume percent to generate at least 5 weight percent of colloidal carbonaceous particles and mixing the carbonaceous solid material so ground with carrier liquid and dispersing agent until a slurry with specified properties is produced. A method of stabilizing a carbonaceous solid material-liquid slurry by adding to the slurry either fine carbonaceous solid material and/or dispersing agent and/or stabilizer is also disclosed.

대표청구항 ▼

A carbonaceous compact comprising finely divided solid carbonaceous particles, wherein: (a) said compact has a specific surface area of from about 0.8 to about 4.0 square meters per cubic centimeter and an interstitial porosity of less than about 20 volume percent; (b) from about 5 to about 70 weigh

A carbonaceous compact comprising finely divided solid carbonaceous particles, wherein: (a) said compact has a specific surface area of from about 0.8 to about 4.0 square meters per cubic centimeter and an interstitial porosity of less than about 20 volume percent; (b) from about 5 to about 70 weight percent of said solid carbonaceous particles are of colloidal size, being smaller than about 3 microns; (c) said compact of finely divided solid carbonaceous particles has a particle size distribution substantially in accordance with the following formula: [Figure] [Figure] [Figure] [Figure] wherein: 1. CPFT is the cumulative percent of said solid carbonaceous material finer than a certain specified particle size D, in volume percent; 2. k is the number of component distributions in the compact and is at least 1; 3. Xj is the fractional amount of the component j in the compact, is less than or equal to 1.0, and the sum of all of the Xj\s in the consist is 1.0; 4. N is the distribution modulus of fraction j and is greater than about 0.001; 5. D is the diameter of any particle in the compact and ranges from about 0.05 to about 1180 microns; 6. Ds is the diameter of the smallest particle in fraction j, as measured at 1% CPFT on a plot of CPFT versus size D, is less than DL, and is greater than 0.05 microns; and 7. DL is the diameter of the size modulus in fraction j, measured by sieve size or its equivalent, and is from about 15 to about 1180 microns; and (d) at least 85 weight percent of the carbonaceous particles in the compact have a particle size less than 300 microns.