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Square Quartz Crucible

  • Description

Main raw material: high purity quartz sand

Main outcome measures: (unit: ppm)

1. Excipients:

① The graphite electrode is made of 76mm thick high purity electrode rod

Ash content: < 80ppm

False specific gravity: 1.6g/cm

Specific resistance: < 15 × 10 Ω. Cm

Bending strength: > 1.47 × 10Pa

② Graphite mould

Ash content: < 200ppm

False specific gravity: 16g / cm

Bending strength: > 1.67 × 10Pa

③ Large size quartz heat shield

Purity: Al < 200 Na < 30 Li < 30

Fe<30 K<30

The main chemical composition of quartz crucible is silica, which does not react with other acids except hydrofluoric acid, but easily reacts with caustic alkali and alkali metal carbonate

The quartz crucible has good thermal stability and can be heated directly on the flame

Quartz crucibles, like glassware, are easy to break, so you should be careful when using them

Potassium bisulfate (sodium) and sodium thiosulfate (dried at 212 ℃) can be used as fluxes in quartz crucible. The melting temperature shall not exceed 800 ℃.

 


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公司地址ADD:Pudong Dist, Shanghai 200120, China

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