A method of processing a useable particulated nepheline syenite including providing particulate nepheline syenite with a maximum first grain size; milling the nepheline syenite in a ball mill operated substantially dry to produce a dry feed stock with particles less than a given size; and, using an air classifier to remove particles having a second grain size from the feed stock to provide an Einlehner Abrasive Value of less than about 100. In practice the second grain size is less than 5 microns and the distribution profile is generally 4-5 microns. The product produced by the method is, thus, novel.
申请公布号
WO2008008410(A1)
申请公布日期
2008.01.17
申请号
WO2007US15848
申请日期
2007.07.12
申请人
UNIMIN CORPORATON;JANIK, JERRY, WILLIAM;LACHAPELLE, DANIEL, JOHN;VAN REMORTEL, SCOTT
发明人
JANIK, JERRY, WILLIAM;LACHAPELLE, DANIEL, JOHN;VAN REMORTEL, SCOTT