Industrial Mineral · Raw Ore & Exfoliated · SGS Asbestos-Free
蛭石 · Hydrated Magnesium-Aluminium Silicate
Gold & Silver grades · Expands up to 15× on heating
Vermiculite is a naturally occurring layered silicate that exfoliates dramatically when heated, expanding into light, fire-resistant, thermally and acoustically insulating granules. Global Vista supplies SGS asbestos-free raw ore and exfoliated vermiculite in gold and silver grades.
Vermiculite is a hydrated magnesium-aluminium-iron silicate with a layered, mica-like structure. When heated rapidly to around 850–1000 °C, interlayer water flashes to steam and the mineral exfoliates — expanding many times its original volume into light, worm-like granules (the name comes from the Latin for "to breed worms").
The expanded form is extremely light, incombustible, chemically inert and an excellent thermal and acoustic insulator. This makes it a core material for passive fire protection (vermiculite boards, sprays and coatings), lightweight insulating concrete and plaster, high-temperature pipe and furnace insulation, and lightweight refractory castables.
Beyond construction and refractories, vermiculite is widely used in horticulture as a soil conditioner and seed-raising medium thanks to its water and nutrient retention, and in friction linings, packaging and absorbents. Global Vista supplies both raw ore (for customers who exfoliate in-house) and ready-exfoliated vermiculite in gold and silver grades, all SGS-certified asbestos-free. See also our acicular wollastonite for fireproofing and friction formulations.
* Values are indicative typical/guaranteed figures and can be tailored to your specification. A Certificate of Analysis (COA) is delivered with every shipment; third-party inspection (SGS / Bureau Veritas / Intertek / CIQ) available on request.
Premium
Higher-quality ore, brighter colour, preferred for horticulture and premium boards.
Common: horticulture
Standard
Cost-effective grade for fireproofing, insulation and refractory fillers.
Common: fireproofing
Unexpanded
For customers exfoliating in their own furnaces; lower freight per tonne.
Common: in-house exfoliation
Expanded
Ready-to-use light granules for insulation, plaster and packaging.
Common: ready-to-use
Vermiculite boards, sprays and coatings that insulate steel and structures against fire — non-combustible and stable to ~1100 °C.
Loose-fill and bound insulation for furnaces, pipework, chimneys, and lightweight insulating concrete and plaster.
Soil conditioner and seed-raising/propagation medium — retains water and nutrients while keeping media aerated.
Lightweight aggregate for insulating refractory castables, back-up insulation and furnace linings.
Reinforcing and insulating filler in brake linings, gaskets and high-temperature sealing materials.
Lightweight, inert cushioning for hazardous-goods packaging and as an industrial absorbent.
Lot-traceable chemical and physical analysis with every shipment.
SGS, Bureau Veritas, Intertek or CIQ pre-shipment inspection on request.
Pre-shipment sample for your lab verification before bulk order.
Grade and granulometry tailored to your process, not sold as a generic commodity.
Tianjin Xingang · Qingdao · Shanghai
Exfoliated: compressed bales or PP bags. Raw ore: 25kg bags or 1 MT jumbo bags / bulk.
FOB, CIF, CFR, DAP available.
T/T or irrevocable L/C at sight. USD / EUR / JPY settlement.
15–25 days from order confirmation to vessel sailing.
Vermiculite is used for passive fire protection (boards, sprays), thermal and acoustic insulation, lightweight concrete/plaster, refractory castables, horticulture (soil conditioner and seed medium), friction linings and packaging. It is light, non-combustible and inert.
Yes. All Global Vista vermiculite is SGS-certified asbestos-free. We provide the test documentation with shipment for your compliance and safety review.
Raw (unexpanded) ore is shipped dense and exfoliated by the customer in their own furnace — lower freight per tonne. Exfoliated (expanded) vermiculite is ready-to-use light granules, ideal where the buyer does not have exfoliation capacity.
Gold grade is a higher-quality, brighter ore often preferred for horticulture and premium boards; silver grade is a cost-effective standard grade for fireproofing, insulation and refractory fillers.
Raw ore in 0.3–1, 1–2, 2–4 and 4–8mm; exfoliated in superfine, fine, medium and large grades. Specify your application and we will recommend the grade and size.
Trial orders from one container. Production and contract volumes per specification, with SGS asbestos-free certification and COA included.
Specify your grade/size, quantity and destination port — we respond within one business day with FOB China and CIF quotes.