Low iron silica sand product and method of making same
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 19, 2024
Grant Date -
N/A
app pub date -
Jan 19, 2023
filing date -
Jan 19, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A method for producing a low iron silica sand product suitable for glass production has an SiO2 content of at least 99.8% by weight, an Fe2O3 content of less than 0.008% by weight, an Al2O3 content of less than 0.1% by weight, and a CaO content of less than 0.05% by weight includes preparing a slurry of crude ore, wherein the crude ore has a sand content of about 75% to 80% by weight, a kaolin/mica content of about 15% to 25% by weight, a dark, heavy mineral content of about 1% by weight, and an Fe2O3 content of about 0.5% to 1.0% by weight. Particles having a size of less than about one hundred forty mesh are removed, and contaminant material is removed. The sand is then separated from the slurry, dried, and passed through a rare earth magnetic separator.
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International Classification(s)
- 2023 Application Filing Year
- C03C Class
- 543 Applications Filed
- 109 Patents Issued To-Date
- 20.08 % Issued To-Date
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- C03C Class
- 0 % this patent is cited more than
- 1 Age
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