| 摘要 |
Methods and compositions for grinding materials are provided. In an embod iment, the present invention provides a method of grinding solid materials. For example, the method can comprise mixing the solid material with the grin ding aid, and using a grinding media such as steel balls to grind the solids . The grinding aid composition can comprise one or more glycerin by-products derived from a biodiesel manufacturing process. The grinding aid compositio n can also comprise one or more glycerin by-products of transesterification reactions involving triglycerides. The grinding aid can be added to the grin ding process as a solution.
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