| abstract |
The invention relates to an aqueous dispersion of pulverized coal useful as a liquid fuel and a process for its preparation. According to the invention, the carbonaceous raw material is mixed with water, sprayed and, during or after spraying, a dispersing agent is added which, by selective adsorption, produces different electric charges on the carbon particles and on the particles. impurity particles, and this different electric charge is used to separate the carbon from the impurities. |