Vermiculite Production Lines

Vermiculite forms from the alteration of phlogopite, biotite or chlorite weathering processes or byhydrothermal solutions. Almost all known occurrences are associated with basic or ultrabasic rocks, many of which bear evidence of intrusion by acid magmas or carbonatites. Vermiculite is believed to form by supergene alteration by weathering and meteoricwater, and its occurrence is depth-dependent.
Uses Properties sought Specifications
Construction
• Lightweight material
• Thermal insulation
• Fire-proofing
• Acoustic insulation
• Aggregate
• Low bulk density
• Low thermal conductivity
• High sintering and fusion temperatures
• High sound absorption
• Chemically inert
• Rotproof
• Odourless
• Non-irritating
Depends on enduse but specifications generally include vermiculite content of concentrates (90–99%), particle size, exfoliation efficiency, density after exfoliation
Filler • Chemically inert
Refractory • Low thermal conductivity
• High sintering and fusion temperatures
Agriculture/ horticulture
• High cation exchange capacity
• Ability to absorb moisture and
remain free-flowing