Ultrafine nepheline syenite
AssigneeUnimin Corporation
InventorsJerry William Janik, Scott Van Remortel
Life of this patent
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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
Claims18
1-38. (canceled)
An ultra-fine inorganic powder formed from a quartz free igneous rock, said powder having a controlled maximum particle size in a range where the upper value of the controlled maximum particle size is less than 10 microns and the lower value of the controlled maximum particle size is about 5 microns.
Dependencies are inferred from the claim text.