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2 209 859

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Application

2002119629/12, 2002-07-24

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Start date

2002-07-24

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Actual filing date

2002-07-24

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Published

2003-08-10

(72)

Inventor

Dorogovin B.A.Sopeleva E.G.Mukhanova N.G.Mareeva T.V.Evseeva I.B.Mar'In A.A.Shishminov A.V.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchno-Islledovatel'Skij Institut Sinteza Mineral'Nogo Syr'Ja"

METHOD OF GROWING COLORED VARIETIES OF QUARTZ CRYSTALS Russian patent published in 2003 - IPC

Abstract RU 2209859 C1

FIELD: method of growing colored varieties of quartz crystals under hydrothermal conditions at temperature differential; manufacture of precious stones jewelry. SUBSTANCE: proposed method employs autoclave in growth mode, heating it at seeding of seed plates and growth of crystals on these plates at solidification temperature of 300-315 C in autoclave at temperature differential between growth and dissolving zones; during introduction of autoclave in growth mode, heating and hydrothermal seeding of seed plates are performed at temperature higher than solidification temperature by 10-20 C, after which temperature is reduced to growth level at rate of 1.5-2.0 C/day at simultaneous increase of temperature differential from zero to growth level at rate of 3-5 C/day; average temperature and pressure shall be constant. EFFECT: improved quality of quartz crystals. 1 tbl

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RU 2 209 859 C1

Authors

Dorogovin B.A.

Sopeleva E.G.

Mukhanova N.G.

Mareeva T.V.

Evseeva I.B.

Mar'In A.A.

Shishminov A.V.

Dates

2003-08-10—Published

2002-07-24—Filed

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