What other clarifying agents are used in glass manufacturing?

We are a manufacturer of glass clarifying agents, welcome to inquire!

In glass manufacturing, besides sodium pyroantimonate and cerium oxide, there are also various clarifying agents. Let me help you sort them out:

1. Oxide clarifying agent

White arsenic (arsenic trioxide): has excellent clarification effect, but is highly toxic and needs to be used in combination with nitrate.

Antimony oxide: Low toxicity, commonly used in lead glass, needs to be used in combination with nitrate.

Nitrate: Generally used as an oxygen supply agent in combination with variable valence oxides.

2. Sulfate type clarifying agent

Sodium sulfate (saltpeter): high temperature decomposition produces oxygen and sulfur dioxide, promoting clarification.

Calcium sulfate (gypsum): similar to saltpeter, used to adjust the viscosity of the melt.

3. Halide clarifying agent

Fluoride: such as sodium fluoride, promotes clarification by releasing gas, and attention should be paid to its corrosiveness.

4. Composite clarifying agent

Arsenic free composite clarifying agent: Green and environmentally friendly, it is the direction for the industry to achieve arsenic free treatment.

Arsenic based composite clarifying agent: mainly composed of arsenic trioxide, with stable clarifying effect.

Arsenic antimony based composite clarifying agent: utilizing smelting by-products, with low clarification temperature and wide range.

Cerium based composite clarifying agent: utilizing waste materials from rare earth factories, with strong clarifying ability.

5. Other types

Bismuth oxide: low temperature and high efficiency, environmentally friendly and non-toxic, suitable for electronic glass.

Ammonium salt: such as ammonium sulfate, which decomposes at high temperatures to produce gases and is used in specific glass systems.

These clarifying agents each have their own characteristics, and when selecting, consideration should be given to the type of glass, environmental requirements, and cost. If you have specific application scenarios, I can help you further analyze them!