Device for growing optical-grade strontium titanate single crystal by flame fusion method

Abstract

The invention discloses a device for growing an optical-grade strontium titanate single crystal by a flame fusion method. The device for growing an optical-grade strontium titanate single crystal by a flame fusion method comprises: a protection box; a reaction box, wherein the reaction box is arranged in the protection box, a partition plate is fixedly arranged in an inner cavity of the reaction box, a discharge barrel is arranged below the partition plate, a discharge opening for spraying materials is formed in the outer part of the discharge barrel, and a gas storage tank for storing gas is arranged at the top of the reaction box; a crushing cylinder, wherein a rotating rod is arranged in the crushing cylinder, crushing blades used for grinding materials are arranged outside the rotating rod, and the crushing cylinder communicates with the reaction box through a discharging pipe arranged at the bottom end; and a discharge mechanism which can spray gas from a discharge opening. According to the device for growing the optical-grade strontium titanate single crystal through the flame fusion method, powder is stirred and smashed through the crushing blades, powder and hydrogen are sucked into the reaction box at the same time and sprayed out from the discharge opening, and the device guarantees that the powder is discharged evenly and stably.

Description

technical field [0001] The invention relates to the technical field of strontium titanate preparation, in particular to a device for growing an optical-grade strontium titanate single crystal by a flame melting method. Background technique [0002] The flame melting method, also known as the Werner method, is one of the methods for artificially preparing single crystals from the melt. Usually, the fine powder of the prepared raw materials is leaked from the nozzle, sprayed evenly in the hydrogen-oxygen flame and melted. Then condense and crystallize on the top layer of the seed crystal or pear-shaped single crystal, and the pear crystal grows from the top melting cone, which can be used to produce synthetic ruby, sapphire, spinel, rutile, artificial strontium titanate and other artificial gemstones at low cost . [0003] The existing equipment for preparing strontium titanate single crystals is not effective. It only mixes the raw material powder with hydrogen and oxygen fo...

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Problems solved by technology

[0004] The object of the present invention is to provide a device for growing optical-grade strontium titanate single crystal by flame melting method, so as to solve the existing problem of uneven feeding when preparing strontium titanate single crystal

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