Discussion and application of ball mill in preparation of particle size samples of fine grained sedimentary rocks

Abstract The grain size of clastic rocks is one the most important structural characteristics sediments, which can directly reflect hydrodynamic conditions ancient sedimentary period. preparation conventional rock particle samples usually done by hand wet grinding with a hammer experienced experimenter. For fine-grained rocks, method for preparing has disadvantages long time and low efficiency. This paper introduces fine grained separating particles ball mill. By carrying out experiments mill, influence different sample quality mill parameters on distribution in process fragmentation was discussed. are determined as follows: mass 0.14 g ~ 0.20 g, frequency 10 Hz, milling 3 min, efficiency greatly improved. final suspension were tested laser analyzer, given, provides basis study lithology classification, lithofacies hydrocarbon reservoir heterogeneity, plays an role exploration development unconventional oil gas.