| 1 | As a result, the addition of alumina enhances the decomposition of zircon. | |
| 2 | The ingredients of the product comprise zircon sand, limestone, calcium phosphate, calcium fluoride and borax. | |
| 3 | The borax plays the role of separating radioactive materials-uranium and thorium from the zircon sand. | |
| 4 | The zirconite is one of mineral resources associated with radioactivity. The exploitation and uses of zirconite would lead to pollution to the environment. | |
| 5 | The component of the preventing sulfur coating planned to develop is confirmed as: Zircon sand , phenolaldehyde resin, modify clay, vegetable glue , ink; |
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