METHOD FOR PRODUCING SILICA SAND FOR GLASS PRODUCTION, AND SILICA SAND FOR GLASS PRODUCTION PRODUCED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method capable of inexpensively producing silica sand for glass production in which unmelted material is hardly produced.;SOLUTION: Silica sand raw ore composed of sea sand having a plurality of maximum values in the particle size distribution in the particle size histogram curve is classified into a plurality of particle groups in which the maximum values of the particle size distribution in the particle size histogram curve are different to each other. One of the plurality of particle groups is ground. The ground particle group is classified, and silica sand in a predetermined particle size range is taken out from the ground particle group.;COPYRIGHT: (C)2011,JPO&INPIT