发明名称 |
METHOD OF PROCESSING NEPHELINE SYENITE POWDER TO PRODUCE AN ULTRA-FINE GRAIN SIZE PRODUCT |
摘要 |
<p>The method of converting nepheline syenite particulate feedstock with a grain size profile to an ultra-fine grain finish product for subsequent commercial use, the ultra--fine grain final product has a maximum grain size of less than about 6 microns. The method comprising: providing a dry feedstock with a controlled maximum particle size greater than about 20 microns; grinding the feedstock in a dry state by passing the feedstock vertically downward through a continuous, high-speed stirred ball mill whereby the feedstock is ground into an intermediate powder having a drastically reduced grain size profile than the grain size profile of the feedstock; and passing the intermediate powder from the mill through an air classifier using a rapidly moving high speed air stream moving along a given path to convey the ultra-fine grain product along the path and from the classifier and to allow coarse particulate material including particles larger than the ultra--fine product to be separated and then expelled from the classifier.</p> |
申请公布号 |
CA2618864(C) |
申请公布日期 |
2012.04.03 |
申请号 |
CA20082618864 |
申请日期 |
2008.01.23 |
申请人 |
UNIMIN CORPORATION |
发明人 |
SCHLESINGER, LOUIS M.;DURAN SANCHEZ, MAURICIO;HERNANDEZ GONZALEZ, GERARDO;GONZALEZ ACEVEDO, ARTEMIO |
分类号 |
B02C17/16;B02C17/18;B02C23/12;C03C3/083;C03C3/085;C03C3/087 |
主分类号 |
B02C17/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|