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1. Physical and chemical properties
Molecular formula Na3AlF6, molecular weight 209.94, is a complex compound or a double salt of NaF and AlF3, the color is white, off-white, yellow powder or crystalline particles due to impurities, its melting point is 1025℃, and the bulk density is 0.6～1.0g /L, true density is 2.95～3.05g/cm3, heat generation is 225KJ, specific gravity is 2.75～3.00g/cm3, and heat of fusion is 107KJ.
2. Purpose
Mainly used as flux for aluminum electrolysis, wear-resistant additive for abrasive products, flux for ferroalloys and boiling steel, flux for non-ferrous metals, deoxidizer for casting, emulsifier for enamel, opalizer for glass, welding material The flux, ceramic fillers, pesticides and insecticides.
Three, quality implementation standards
GB4291-2007
BRAND CHEMICAL COMPOSITION(%) PHYSICAL
NO. PROPERTY
F AL Na SiO2 Fe2O3 SO42- CaO P2O5 MOISTURE IGNTION LOSS
≥ ≤
CH-1 52 12 33 0.36 0.08 1 0.2 0.03 0.4 2.5
CM-1 53 13 32 0.36 0.08 1 0.6 0.03 0.4 2.5
Four, packaging and weight
Packed in laminated plastic woven bag lined with plastic film bag, each bag has a net weight of 25kg, 50kg, 1 ton for export products according to commodity inspection or foreign requirements. |
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