To provide a rock grinding apparatus with which artificial sand containing a large quantity of sand having a nearly spherical particle shape similar to that of natural sand and a desired particle distribution can be manufactured and in which the equipment cost, the construction cost and the maintenance expense can be made inexpensive and the operation of which can be made easy since large-sized equipment is not necessary.

This rock grinding apparatus is provided with a vessel, an agitating means for agitating the rock housed in the vessel and a conveying means for conveying the sand scattered from the rock agitated with the agitating means to the outside.