Manufacture of high purity, high concentration and high granularity large granular silicon dioxide gel
An improved process based on an existing technology for preparing high-purity, high-concentration, high-uniformity greate-particle SiO2 sol features making use of ammonia-type strong acid is cationicexchange resin for metal ion exchange to stabilize ammonia, and making use of millipore ultrafiltrati...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An improved process based on an existing technology for preparing high-purity, high-concentration, high-uniformity greate-particle SiO2 sol features making use of ammonia-type strong acid is cationicexchange resin for metal ion exchange to stabilize ammonia, and making use of millipore ultrafiltration film to filter out particles less than 20 nm. Its advantages include small particle content less than 2%, easy operation and low cost of apparatus and energy consumption. |
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