PRODUCTION METHOD OF TELLURIUM OF HIGH PURITY
The process comprises homogenisation of industrial tellurium, treatment with 50-70% concn. nitric acid, reprecipitation, filtration, and heating to 50-80 deg.C. This is followed by stagewise addn. of hydrazide hydrate solution. Heating at 50-80 deg. for 2-4 hours, filtration, washing, drying at 80-1...
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| Main Author | |
|---|---|
| Format | Patent |
| Language | English |
| Published |
02.11.1991
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| Edition | 4 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | The process comprises homogenisation of industrial tellurium, treatment with 50-70% concn. nitric acid, reprecipitation, filtration, and heating to 50-80 deg.C. This is followed by stagewise addn. of hydrazide hydrate solution. Heating at 50-80 deg. for 2-4 hours, filtration, washing, drying at 80-110 deg.C fusion and pouring into ingot moulds under reducing or inert atmosphere, completes the process. |
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| AbstractList | The process comprises homogenisation of industrial tellurium, treatment with 50-70% concn. nitric acid, reprecipitation, filtration, and heating to 50-80 deg.C. This is followed by stagewise addn. of hydrazide hydrate solution. Heating at 50-80 deg. for 2-4 hours, filtration, washing, drying at 80-110 deg.C fusion and pouring into ingot moulds under reducing or inert atmosphere, completes the process. |
| Author | ANDRONESCU DAN-VALERIAN |
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| Notes | Application Number: RO19890139089 |
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| PublicationDate | 19911102 |
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| RelatedCompanies | INTREPRINDEREA DE CERCETARE SI PRODUCTIE MATERIALE SEMICONDUCTOARE, BUCURESTI |
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| Snippet | The process comprises homogenisation of industrial tellurium, treatment with 50-70% concn. nitric acid, reprecipitation, filtration, and heating to 50-80... |
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| Title | PRODUCTION METHOD OF TELLURIUM OF HIGH PURITY |
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