Quartz crucible

1. It can be used below 1650 degrees, divided into fully transparent and partially transparent. The transparent quartz crucible of the electric gufaji steel jade crucible is an indispensable basic raw material for drawing large-diameter photovoltaic cells and the development trend of large-scale integrated circuit chips, The small fully transparent quartz crucible has been replaced by this crucible in the capitalist countries of semiconductor material industrial production. It has the advantages of high purity, strong heat resistance, large specification, high precision, good heat insulation, resource saving and stable quality

2. Do not touch HF. At high temperature, it is very easy to react with alkali and alkaline earth metal sulfide in caustic carbon composite furnace body

3. The quartz crucible is suitable to use K2S2O7 and KHSO4 as the solution to melt the test object and the steel jade zirconium corundum sagger, and na2s207 (drying at 212 degrees first) as the solution to solve the test object

4. Quartz stone is brittle and easy to break. Pay attention to it when applying

5. In addition to HF, general dilute strong oxidant can be used as cleaning solution

Ceramic crucible:

1. It can be used up and down at 1200 ℃

2. It is applicable to K2S2O7 and other acidic substances

3. Generally, it is not allowed to melt with NaOH, Na2O2, Na2CO3 and other alkaline substances as solution to prevent etching of ceramic crucible. Ceramic crucible shall not touch hydrochloric acid

4. Ceramic crucibles can generally be boiled and cleaned with dilute sulfuric acid

Corundum crucible:

1. Corundum crucible is composed of molten aluminum oxide with porous structure, which is hard and resistant to melting

2. The corundum crucible is suitable for melting the test sample with some weak alkaline chemicals such as na2c03 without water, and is not suitable for melting the test sample with strong alkaline substances such as na202, NaOH and acidic substances such as k2s207