Sodium Remover for Aluminum & Metal Processing

Aluminum Alloy Sodium Remover: Formula and Application

The effective removal of sodium from aluminum alloy melts is crucial for improving metal fluidity and casting quality. The following outlines the composition and usage of a typical aluminum alloy sodium remover formula.

Main Ingredients

• Hexachloroethane (C₂Cl₆): Reacts with sodium to form sodium chloride.
• Sodium Fluoride (NaF): Promotes reaction and lowers the melting point.
• Sodium Chloride (NaCl): Improves fluidity and assists in reaction.
• Cryolite (Na₃AlF₆): Promotes reaction and adsorbs impurities.

Auxiliary Ingredients

• Calcium Fluoride (CaF₂): Enhances slag fluidity.
• Sodium Nitrate (NaNO₃): Oxidizes impurities and reduces smoke.
• Graphite Powder: Improves the spreadability and reaction efficiency.

Component Functions

• Hexachloroethane: Removes sodium by forming NaCl, which floats to form slag.
• Sodium Fluoride: Lowers melting point and promotes reaction.
• Sodium Chloride: Enhances fluidity and aids uniform reaction.
• Cryolite: Facilitates slag separation and floating.
• Calcium Fluoride: Improves slag fluidity for easier separation.
• Sodium Nitrate: Oxidizes impurities and mitigates smoke emission.
• Graphite Powder: Enhances spreadability and reaction efficiency.

Sodium Removal Principle

The sodium remover effectively extracts sodium from aluminum alloy melts through chemical reactions, primarily forming sodium chloride that floats as slag, making it easy to remove.

Usage Method

1. Preheating: Heat sodium remover to 100-150°C to eliminate moisture.
2. Addition: Evenly distribute or directly add to melt surface.
3. Stirring: Gently stir for full contact with melt.
4. Reaction: Sodium removal through reaction forming floating slag.
5. Slag Skimming: Remove slag using appropriate tools.

Precautions

• Safety Protection: Use protective gear and ensure proper ventilation due to chlorine gas release.
• Dosage Control: Adjust sodium remover quantity based on melt's sodium content, typically 0.5-2% of the melt weight.
• Storage: Store in a dry, cool environment away from flammable materials.

Summary

This sodium remover formula efficiently addresses sodium extraction from aluminum alloy melts, leveraging chemicals like hexachloroethane for effective results. Applications span aluminum processing, casting, and non-ferrous metal industries, making it vital for enhancing production efficiency and product quality.