Sodium Hexametaphosphate (SHMP)
CAS Number: 10124-56-8
Sodium Hexametaphosphate (SHMP) is an inorganic polyphosphate dispersant and depressant used in flotation circuits to prevent slime aggregation and depression of calcium-bearing gangue minerals such as calcite and apatite. It chelates calcium and magnesium ions from the slurry, reduces water hardness effects on collector efficiency, and disperses fine clay particles that would otherwise coat mineral surfaces. SHMP is widely used in fluorite, scheelite, and iron ore flotation.
Technical Specifications
| appearance | White powder or granules |
| moisture (%) | ≤0.5 |
| P2O5 content (%) | ≥68 |
| pH (1% solution) | 5.8-7.0 |
Applications
- Calcite and carbonate gangue depression in fluorite flotation
- Slime dispersion in iron ore and phosphate flotation
- Water hardness reduction in flotation circuits
- Scheelite and cassiterite flotation conditioning
- Combined use with fatty acid collectors for oxide minerals
Key Features
- Effective calcium and magnesium ion sequestration in hard water systems
- Disperses fine clay and slime particles to restore collector selectivity
- Depresses calcite and carbonate gangue in fluorite and scheelite circuits
- Available in powder and granule forms for flexible handling
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CAS Number
10124-56-8
Category
Mining / Flotation ChemicalsAvailability
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