RU2007147784A - METHOD FOR CLEANING DIAMONDS - Google Patents
METHOD FOR CLEANING DIAMONDS Download PDFInfo
- Publication number
- RU2007147784A RU2007147784A RU2007147784/15A RU2007147784A RU2007147784A RU 2007147784 A RU2007147784 A RU 2007147784A RU 2007147784/15 A RU2007147784/15 A RU 2007147784/15A RU 2007147784 A RU2007147784 A RU 2007147784A RU 2007147784 A RU2007147784 A RU 2007147784A
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- stage
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- temperature
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- Carbon And Carbon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Способ очистки алмазов, включающий постадийную обработку алмазов в автоклаве при повышенной температуре и давлении под воздействием микроволнового излучения: на первой стадии - смесью азотной кислоты и перекиси водорода, на второй - смесью концентрированных азотной, соляной и фтористоводородной кислот, отличающийся тем, что обработку на первой и второй стадиях ведут в газовой фазе кислот при заполнении автоклава 45-55%, азотную кислоту и перекись водорода для первой стадии берут в объемном соотношении 4:1 соответственно и проводят при температуре 215-250°С в течение 15-60 мин, азотную, соляную и фтористоводородную кислоты для второй стадии берут в объемном соотношении 5:4:1 соответственно и проводят при той же температуре в течение 15-150 мин, после чего на третьей стадии ведут обработку 5%-ным раствором соляной кислоты в течение 5-15 мин при температуре не более 160°С.A method for cleaning diamonds, including stepwise processing of diamonds in an autoclave at elevated temperature and pressure under the influence of microwave radiation: in the first stage, with a mixture of nitric acid and hydrogen peroxide, in the second, with a mixture of concentrated nitric, hydrochloric and hydrofluoric acids, characterized in that the processing in the first and the second stage is carried out in the gas phase of the acids when filling the autoclave 45-55%, nitric acid and hydrogen peroxide for the first stage are taken in a volume ratio of 4: 1, respectively, and carried out at a rate at a temperature of 215-250 ° C for 15-60 minutes, nitric, hydrochloric and hydrofluoric acids for the second stage are taken in a volume ratio of 5: 4: 1, respectively, and carried out at the same temperature for 15-150 minutes, after which at the third stage they are treated with a 5% hydrochloric acid solution for 5-15 minutes at a temperature of not more than 160 ° C.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2007147784/15A RU2367601C1 (en) | 2007-12-25 | 2007-12-25 | Method for diamonds purification |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2007147784/15A RU2367601C1 (en) | 2007-12-25 | 2007-12-25 | Method for diamonds purification |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2007147784A true RU2007147784A (en) | 2009-06-27 |
RU2367601C1 RU2367601C1 (en) | 2009-09-20 |
Family
ID=41026737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2007147784/15A RU2367601C1 (en) | 2007-12-25 | 2007-12-25 | Method for diamonds purification |
Country Status (1)
Country | Link |
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RU (1) | RU2367601C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115340089A (en) * | 2022-08-24 | 2022-11-15 | 内蒙古唐合科技有限公司 | Method for purifying artificial diamond |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2447203C1 (en) * | 2010-09-29 | 2012-04-10 | АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (открытое акционерное общество) | Method of cleaning large crystals of natural diamonds |
-
2007
- 2007-12-25 RU RU2007147784/15A patent/RU2367601C1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115340089A (en) * | 2022-08-24 | 2022-11-15 | 内蒙古唐合科技有限公司 | Method for purifying artificial diamond |
CN115340089B (en) * | 2022-08-24 | 2024-02-06 | 内蒙古唐合科技有限公司 | Method for purifying artificial diamond |
Also Published As
Publication number | Publication date |
---|---|
RU2367601C1 (en) | 2009-09-20 |
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