| 摘要 |
A continuous wet grinding process is disclosed for comminuting material in a liquid, comprising one or more continuous wet grinding line. Said continuous wet grinding line comprises (1) two or more sealed wet grinders connected in cascade, (2) no unsealed container connected between said grinders, (3) a positive displacement pump connected before the first sealed wet grinder in said cascade to provide the required pressure by the process flow and to regulate flow rate, (4) one or more non-volume delivery pump connected before one or more of said grinders except the first grinder in said cascade to provide necessary pressure without changing flow rate. The invention also discloses a polyester composition that contains high quality inorganic filler such as carbon black, said inorganic filler is produced in said continuous wet grinding process, which has narrower particle size distribution and less coarse particles, therefore less breaks during fiber spinning.
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