RU2007147784A - METHOD FOR CLEANING DIAMONDS - Google Patents

METHOD FOR CLEANING DIAMONDS Download PDF

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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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RU
Russia
Prior art keywords
stage
minutes
temperature
carried out
hydrochloric
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RU2007147784/15A
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Russian (ru)
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RU2367601C1 (en
Inventor
Юрий Андреевич Дойников (RU)
Юрий Андреевич Дойников
Александр Федорович Махрачев (RU)
Александр Федорович Махрачев
Константин Константинович Курбатов (RU)
Константин Константинович Курбатов
Игорь Викторович Макарский (RU)
Игорь Викторович Макарский
Евгений Иванович Адодин (RU)
Евгений Иванович Адодин
Сергей Анатольевич Ягупов (RU)
Сергей Анатольевич Ягупов
Лариса Геннадьевна Тарасова (RU)
Лариса Геннадьевна Тарасова
Евгений Геннадьевич Коваленко (RU)
Евгений Геннадьевич Коваленко
Original Assignee
АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (закрытое акционерное общество) (RU)
Акционерная компания "АЛРОСА" (Закрытое акционерное общество)
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Application filed by АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (закрытое акционерное общество) (RU), Акционерная компания "АЛРОСА" (Закрытое акционерное общество) filed Critical АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (закрытое акционерное общество) (RU)
Priority to RU2007147784/15A priority Critical patent/RU2367601C1/en
Publication of RU2007147784A publication Critical patent/RU2007147784A/en
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Publication of RU2367601C1 publication Critical patent/RU2367601C1/en

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  • Cleaning By Liquid Or Steam (AREA)
  • 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)

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.
RU2007147784/15A 2007-12-25 2007-12-25 Method for diamonds purification RU2367601C1 (en)

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)

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RU2007147784A true RU2007147784A (en) 2009-06-27
RU2367601C1 RU2367601C1 (en) 2009-09-20

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ID=41026737

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RU2007147784/15A RU2367601C1 (en) 2007-12-25 2007-12-25 Method for diamonds purification

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Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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RU2367601C1 (en) 2009-09-20

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