Split type combined quartz crucible mold

Abstract

The invention relates to a split type combined quartz crucible mold which comprises an inner shell formed by combining and stacking a plurality of high-purity quartz ceramic pieces. A water cooling circulation sleeve sleeves outside the inner shell, an air exhaust gap is reserved between the water cooling circulation sleeve and the outer wall of the inner shell, vacuumizing holes communicated with the air exhaust gap are formed in the high-purity quartz ceramic pieces, and the bottom of the water cooling circulation sleeve is fixedly communicated with a vacuumizing pipeline communicated with the air exhaust gap. The split type combined quartz crucible mold provided by the invention is of a split type structure, has the advantages of being small in expansion coefficient and good in thermal shock property and is not prone to expansion deformation at the high temperature, the high-purity quartz ceramic pieces are made of high-purity silicon dioxide, no pollution is caused when the high-purity quartz ceramic pieces make contact with high-purity quartz sand used as a crucible raw material, each mold is long in service cycle, and the production cost of the crucible is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of crucible molds, in particular to a split-type combined quartz crucible mold. Background technique [0002] With the development of national carbon neutrality meeting the standard requirements, solar energy is developing and progressing day by day, and solar energy has unique advantages. With the development of solar energy, monocrystalline solar technology develops particularly rapidly and occupies a dominant position. The cost performance of solar monocrystalline production has also been greatly improved. In the 1990s, the monocrystalline silicon crucible was more than 10 inches, and now it is more than 36-40 inches. The size of crystalline silicon crucibles gradually increases, and the problem of producing molds for monocrystalline silicon crucibles is also gradually emerging. [0003] At first, the material used for the single crystal silicon quartz crucible mold was graphite. The cost of graphite mol...

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Problems solved by technology

[0003] At first, the material used for the single crystal silicon quartz crucible mold was graphite. The cost of graphite mold was high, and high-purity quartz sand was oxidized and shed at high temperature, but the high-purity quartz sand produced had to be purified after being polluted at about 8,000 yuan per ton. , the cost of graphite crucible mold is high, and the pollution is also large; later, all metals were used as large-scale single crystal silicon quartz crucible mold, but the cost of this mold is also relatively large, and it is easy to deform at high temperature, and it will be mixed with high-purity quartz sand at the same high temperature Reaction pollution, the purification of contaminated high-purity quartz sand is not easy to purify, and the mold is heavy and inconvenient to operate. Both of the above two molds have high cost, low cost performance, and polluted high-purity quartz sand must be carried out every time. The purification of about 8,000 yuan per ton will also increase a lot of environmental pollution

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