Potassium Fluoroaluminate for Metallurgical

Potassium Fluoroaluminate|as a flux agent in metallurgical processes

Synonyms	PAF, Potassium Aluminum Fluoride, Potassium Cryolite
Molecular Formular	KAIF₄/ K3AlF₆
Mol. Wt	145.10
CAS No.	13775-52-5
EINECS No.	237-409-0
Physical State	Grey or White ( Powder or Granule )
Melt Point	548℃
Regular Package	25kg/bag, or according to customers' requirement
Storage	Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materia
Transportation	Not Hazardous Chemical

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The Quality Specification of Potassium Fluoroaluminate ( as a flux agent )

Product Name	Potassium Fluoroaluminate for Metallurgical
Executive Standard	Trade Standard
Index Name	Acceptance Standard ( % )
氟（F）%	48-50
钾（K）%	28-31
铝（Al）%	17-19
铁（Fe）%	≤ 0.01
硫酸盐SO4	≤ 0.2
水份 (H2O) %	≤ 0.7

Here's how potassium fluoroaluminate serves as a flux:

1、Reducing Melting Point:

potassium fluoroaluminate has a lower melting point compared to aluminum oxide (alumina),

a key component in the production of aluminum. By adding potassium fluoroaluminate,

the overall melting point of the mixture is lowered, making the process more energy-efficient.

2、Facilitating Electrolysis:

In aluminum smelting, potassium fluoroaluminate is used in the Hall-Héroult process,

where it acts as a solvent for alumina. This lowers the viscosity of the molten mixture,

allowing for better conductivity and more efficient electrolysis. The reduction of alumina to aluminum

occurs at a lower temperature due to the presence of potassium fluoroaluminate.

3、Dissolving Alumina:

Potassium Fluoroaluminate dissolves alumina at a much lower temperature than the melting point of alumina itself.

This property enables the electrolysis process to occur at temperatures that are more manageable and cost-effective.

4、Improved Conductivity:

The addition of cryolite enhances the conductivity of the molten mixture. This is crucial for the efficient operation

of the electrolytic cells used in aluminum production.

5、Preventing Oxide Formation: Potassium Fluoroaluminate helps prevent the formation of oxides on the surface of

the molten metal. Oxide formation can be detrimental to the quality of the final aluminum product.

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