| 摘要 |
A process is disclosed whereby aqueous slurries of particulate solid materials having a relatively low solids content are converted to aqueous slurries having a relatively high solids content. The process includes deflocculating a mixture comprising a particulate solid material and water with the aid of a chemical deflocculating agent to form a first aqueous slurry, partially dewatering the first aqueous slurry in, for example, a pressure filter to form a cake having a reduced water content as compared to the mixture and subjecting the cake to mechanical work which comprises at least one cycle of applying a stress to the cake and relaxing the applied stress to form a second aqueous slurry having an increased solids content as compared to the first aqueous slurry. |
