Ultrafine nepheline syenite
AssigneeUnimin Corporation
InventorsJerry William Janik, Scott Van Remortel
Life of this patent
Estimating the term…
Abstract
A useable particulate nepheline syenite having a grain size to provide an Einlehner Abrasive Value of less than about 100 is described. The particulate nepheline syenite is generally free from agglomeration and moisture free. At least 99% of the nepheline syenite particles have a size less than 10 microns
Claims15
1-38. (canceled)
An ultra-fine nepheline syenite powder, said powder having a controlled D99 particle size in the range of about 5 microns and less than 10 microns, where said ultra-fine powder has a mean particle size D50 of less than about 2.0 microns.
An ultra-fine powder formed a quartz free igneous rock, said ultra-fine powder being moisture free and having a controlled maximum particle size D99 less than 10 microns and a mean particle size D50 of less than about 2.0 microns.
A nepheline syenite powder where at 99% of the particles have a particle size less than 10 microns, said powder having a D50 particle size of less than about 2.0 microns and wherein particles having a size less than about 0.2 microns have been removed.
Dependencies are inferred from the claim text.