Method for production of proppants

摘要

Disclosed is an apparatus and method for producing frac sand, in order to meet size, sphericity and roundness standards, from a feedstock such as natural sand. The feedstock is rotated as slurry in a conditioning cell, so that it self abrades to produce frac sand with the required characteristics.

主权项

1. A process for producing frac sand having a predetermined size range and sphericity from a feedstock material, the process comprising:
(a) placing said feedstock material in a chamber with a liquid, and causing the liquid to rotate so as to form a slurry, under conditions such that the particles in the slurry are caused to mutually abrade; (b) continuing to rotate the slurry until such time as at least a substantial part of the particles in the slurry meet the predetermined size range and sphericity requirements.