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US 8,894,733 B2Granted
Method for recycling cerium oxide abrasive
AssigneeLG Chem, Ltd.
InventorsWon-Jae Moon, Sang-Oeb Na, Hyung-Young Oh
Life of this patent
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Abstract
Disclosed is a method for recycling a cerium oxide abrasive. The method may include adding a strong alkali solution to a slurry waste of the cerium oxide abrasive, adding sodium fluoride to the slurry waste, and separating a cerium oxide particle included in the slurry waste from other kinds of particles.
Claims5
A method for recycling a cerium oxide abrasive used in polishing of a glass material, the method comprising:
- adding an alkali solution to a slurry waste of the cerium oxide abrasive to form structures, wherein each structure has alkali, silicon and oxygen atoms;
- adding sodium fluoride to the slurry waste to which the alkali solution is added, to form particles, wherein each particle has alkali, fluorine, silicon, and oxygen atoms;
- and
- separating a cerium oxide particle included in the slurry waste from the particles having alkali, fluorine, silicon, and oxygen atoms, formed in the sodium fluoride adding step.
1 more element
Dependencies are inferred from the claim text.