Cas 11145-27-0 Silicon Aluminum Powder
Product advantages
Silicon aluminum powder can replace zirconium silicate, significantly reducing costs. In architectural coatings, the amount of silicon aluminum powder used is generally 15-25% of the amount of titanium dioxide used, thereby significantly reducing product costs.
Silicon aluminum powder can significantly improve the performance of products. In architectural coatings, silicon aluminum powder can enhance titanium dioxide efficiency, improve product whiteness, dry film coverage, storage stability, weather resistance, wear resistance, and scrub resistance. In addition, silicon aluminum powder can improve the construction performance of the product, reduce the thermoplasticity of the coating, and improve the surface stickiness and dust absorption.
Silicon aluminum powder does not use high energy consuming processes such as calcination during the preparation process. The production process is simple and energy consumption is low. The produced silicon aluminum powder has low impurity content, large specific surface area, and large pore volume. In addition, silicon aluminum powder can maintain structural stability at high temperatures, has good electrical insulation performance and corrosion resistance, and is suitable for manufacturing corrosion-resistant materials and insulation materials.
Silicon aluminum powder is widely used in various fields, including architectural coatings, inks, plastics, ceramic glazes, rubber, leather, printing and dyeing, water treatment, and papermaking. In architectural coatings, silicon aluminum powder can have the same lifespan as buildings and has the advantages of natural and beautiful coating, fire resistance, waterproofing, breathability, aging resistance, non-toxic and harmless, low cost, and fast construction.
Principal component control
The SiO ₂ content in lithium slag should be ≥ 45%, which can effectively replace talcum powder and improve the tensile strength and whiteness of paper when used as a papermaking filler.
The content of Al ₂ O ∝ should be ≤ 15% to avoid impurities affecting the performance of the filler; The Fe ₂ O ∝ content should be ≤ 2% to prevent negative effects on paper color.
Other impurity restrictions
The total amount of alkaline oxides such as Na ₂ O and K ₂ O should be ≤ 3% to reduce interference with the acid-base balance of the papermaking process.
2、 Physical property indicators
Particle size and fineness
Lithium slag needs to be processed by ultrafine grinding equipment (such as HLM slag vertical mill) to 180-200 mesh (about 76 microns) to meet the uniform dispersion requirements of papermaking fillers.
Moisture control
The moisture content after drying treatment should be ≤ 5% to prevent clumping or affect the flowability of the filler.
Chemical and compositional indicators
Principal component purity
Silicon content: Ordinary silicon aluminum powder ≥ 95%, high-purity products can reach 99.99%;
Aluminum silicon ratio: For example, the aluminum content in AlSi50 alloy powder is ≥ 50%.
Specific surface area
Activity index: The specific surface area of highly active silicon aluminum powder should reach 180-220 square meters per gram.
Burning loss
Standard range: 7-9% (measured at 800 ℃) 25.
Impurity control
The content of impurities such as iron, aluminum, and calcium must be strictly limited by detection methods (such as ICP-OES)
