| 000 | 04271naa2a2200469 4500 | ||
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| 001 | 607890 | ||
| 005 | 20231030034356.0 | ||
| 035 | _a(RuTPU)RU\TPU\conf\5296 | ||
| 035 | _aRU\TPU\conf\5293 | ||
| 090 | _a607890 | ||
| 100 | _a20140904d2014 k y0rusy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aRU | ||
| 105 | _ay z 100zy | ||
| 135 | _adrgn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aTungsten production technology from low-grade tungsten-containing materials _fD. D. Amanbayev _gSci. adv. S. N. Chegrincev |
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| 203 |
_aТекст _cэлектронный |
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| 215 | _a1 файл (657 Кб) | ||
| 225 | 1 | _aNuclear technologies as integral part of engineering science in the modern world | |
| 230 | _aЭлектронные текстовые данные (1 файл : 657 Кб) | ||
| 300 | _aЗаглавие с экрана | ||
| 320 | _a[Библиогр.: с. 17 (8 назв.)] | ||
| 330 | _aTungsten is a worldwide highly-consumed metal. As the tungsten price has increased substantially in the last decade there is an economic imperative to recycle it. It is suggested to involve tungsten-containing metallurgical slags and wastes in reprocessing. Extraction of 87 % of tungsten into solution was reached by autoclave pressure leaching with sodium carbonate (250 g/l) as a leaching agent. Temperature of the process is 220-230°C, solid-to-liquid ratio - 1:5, stirring rate - 60 rpm, duration - 6 hours. After liquor purification from sulfur and silicon by flocculating agent VPK-402, ion-exchange extraction of tungstate-ion was carried out. Sorption properties of two anion-exchange resins - Amberjet 4200 and AV-17-8 - were studied in static conditions. It was revealed that strongly basic anion-exchange resin AV-17-8 in chloride-form is more capable of tungsten in comparison with Amberjet 4200: 42,5 kilos of W/m{3} against 32 kilos of W/m{3}. Carbonate-ions showed a greater affinity to the resin than tungstate-ions, therefore ion-exchange stage was performed in two steps: 1 - to remove CO[3]{2}- from liquor, 2 - extract WO[4]{2}-. Desorption was implemented by NH[4]Cl (50 g/l) with solid-to-liquid ratio 2,5:1 yielding ammonium paratungstate (NH[4])[2]WO[4] (APT). Technology steps for production pure tungsten powder from APT through WO[3] are well-known and described briefly. | ||
| 337 | _aAdobe Reader | ||
| 463 | 1 |
_0(RuTPU)RU\TPU\conf\3581 _tМетодология проектирования молодежного научно-инновационного пространства как основа подготовки современного инженера _lStrategy design of youth science and innovation environment for modern engineer training _oсборник научных трудов Международной молодежной научной школы, г. Томск, 2 - 4 апреля 2014 г. _fНациональный исследовательский Томский политехнический университет (ТПУ) ; под ред. В. В. Верхотуровой и др. _v[С. 13-17] _d2014 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aвольфрам | |
| 610 | 1 | _aпроизводство | |
| 610 | 1 | _aнизкосортные материалы | |
| 610 | 1 | _aвольфрамосодержащие материалы | |
| 610 | 1 | _aвольфрамсодержащие материалы | |
| 700 | 1 |
_aAmanbayev _bD. D. |
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| 702 | 1 |
_aChegrincev _bS. N. _cchemist-technologist _cEngineer-designer of Tomsk Polytechnic University _f1987- _gSergey Nikolaevich _2stltpush _4727 |
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| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bФизико-технический институт (ФТИ) _bКафедра химической технологии редких, рассеянных и радиоактивных элементов (№ 43) (ХТРЭ) _h56 _2stltpush _3(RuTPU)RU\TPU\col\18733 |
| 801 | 1 |
_aRU _b63413507 _c20101016 |
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| 801 | 2 |
_aRU _b63413507 _c20210401 _gRCR |
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| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/64994 | |
| 856 | 4 | _uhttp://www.lib.tpu.ru/fulltext/c/2014/C07/002.pdf | |
| 942 | _cBK | ||