SU422450A1 - METHOD FOR CLEANING SUBSTANCES DIRECTED BY MELT CRYSTALLIZATION - Google Patents
METHOD FOR CLEANING SUBSTANCES DIRECTED BY MELT CRYSTALLIZATIONInfo
- Publication number
- SU422450A1 SU422450A1 SU1733345A SU1733345A SU422450A1 SU 422450 A1 SU422450 A1 SU 422450A1 SU 1733345 A SU1733345 A SU 1733345A SU 1733345 A SU1733345 A SU 1733345A SU 422450 A1 SU422450 A1 SU 422450A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- melt
- heater
- crystallization
- melt crystallization
- cleaning substances
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Description
1one
Изобретение относитс к кристаллизационной очистке веществ и может примен тьс в .химической промышленности, в металлургии и в ироизводстве полупроводниковы.х материалов .The invention relates to the crystallization purification of substances and can be applied in the chemical industry, in metallurgy and in the production of semiconductor materials.
Известен способ очистки веществ направленной кристаллизацией расплава в контейнере с использованием погруженного в расплав нагревател , перемещаемого по вертикали со скоростью движени фронта кристаллизации .A known method of purification of substances by the directional crystallization of the melt in a container using a heater immersed in the melt, moved vertically with the speed of movement of the crystallization front.
Размещение плоского горизонтального нагревател пад поверхностью твердой фазы очищаемого вещества способствует выравниванию фронта кристаллизации. Однако при этом под нагревателем создаютс самые неблагопри тные услови дл конвекции расплава . Концентрирование примеси в слое расплава под нагревателем снижает эффективность очистки и вынуждает сильно перегревать расплав во избежание захвата загр зненного расплава твердой фазой.Placing a flat horizontal heater pad the surface of the solid phase of the substance to be purified contributes to the equalization of the crystallization front. However, the most unfavorable conditions for melt convection are created under the heater. Concentration of impurities in the melt layer under the heater reduces the cleaning efficiency and forces the melt to overheat to avoid the capture of contaminated melt by the solid phase.
Цель изобретени - устранение захвата расплава твердой фазой.The purpose of the invention is to eliminate capture of the melt by the solid phase.
Дл этого нагревателю, установленному свободно по вертикали и оказывающему давление на твердую фазу, сообщают движение но горизонтали.For this, a heater installed freely vertically and exerting pressure on the solid phase is reported to move horizontally.
Кристаллизаци при таких услови х позвол ет устранить захват расплава твердой фаЗОЙ при минимальном перегреве расплава, вCrystallization under such conditions allows to eliminate the capture of the melt by solid phase with minimal overheating of the melt, in
результате чего повыщаетс эффективность очистки.resulting in improved cleaning efficiency.
На чертеже дана схема, по сн юща предлагаемый способ.The drawing is a diagram explaining the proposed method.
Пререкристаллизируемый материал загружают в контейнер 1, плоское дно которого охлаждают холодильником 2. Нагреватель 3, имеющий плоскую нижнюю поверхность, помещают на дно ко}1тейнера.The recrystallized material is loaded into container 1, the flat bottom of which is cooled by the cooler 2. Heater 3, having a flat bottom surface, is placed on the bottom of the container.
В процессе кристаллизации нагревателю сообщают возвратно-поступательное движение по горизонтали. В результате скольжени нагревател по поверхности твердой фазы, на которую он оказывает давление, разрушаетс диффузионный слой и обеспечиваетс контакт расплава со всеми участками фронта кристаллизации.During the crystallization process, the heater is given a reciprocating horizontal motion. As a result of the heater sliding on the surface of the solid phase on which it exerts pressure, the diffusion layer is destroyed and the melt contacts with all parts of the crystallization front.
Предмет изобретени Subject invention
Способ очистки веществ направленной кристаллизацией расплава в контейнере с охлаждаемым дном с использованием погруженного в расплав нагревател , перемещаемого по вертикали со скоростью движени фронта кристаллизации , о т л и ч а ю щ и и с тем, что, с целью устранени захвата расплава твердой фазой, нагреватель установлен с возможностью свободного перемещени по вертикали под действием твердой фазы и ему сообщают движение но горизонтали.The method of purification of substances by directional crystallization of the melt in a container with a cooled bottom using a heater immersed in the melt, moving vertically with the speed of movement of the crystallization front, is sufficient in order the heater is installed with the possibility of free movement vertically under the action of the solid phase and is informed about the movement but horizontally.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1733345A SU422450A1 (en) | 1971-12-31 | 1971-12-31 | METHOD FOR CLEANING SUBSTANCES DIRECTED BY MELT CRYSTALLIZATION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1733345A SU422450A1 (en) | 1971-12-31 | 1971-12-31 | METHOD FOR CLEANING SUBSTANCES DIRECTED BY MELT CRYSTALLIZATION |
Publications (1)
Publication Number | Publication Date |
---|---|
SU422450A1 true SU422450A1 (en) | 1974-04-05 |
Family
ID=20498800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1733345A SU422450A1 (en) | 1971-12-31 | 1971-12-31 | METHOD FOR CLEANING SUBSTANCES DIRECTED BY MELT CRYSTALLIZATION |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU422450A1 (en) |
-
1971
- 1971-12-31 SU SU1733345A patent/SU422450A1/en active
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