Vermiculite Supplier — Fine, Medium & Coarse Grades
Expanded and crude vermiculite selected by particle size, bulk density and end use. State the form and size grade before comparing packing volume and freight.
- Standards
- asbestos-free export testing available
- Grades
- expanded grades for horticulture, insulation and fireproofing
- MOQ
- By bag volume and particle size
- Packaging
- Compressed bags, jumbo bags or palletized bags
- Lead time
- 10-20 days after packing confirmation
- Trade terms
- FOB · CIF · CFR
Vermiculite size grades and applications
Expanded vermiculite is selected by particle size, bulk density and end use. Crude ore is a separate form with a different customs heading and much lower shipping volume than expanded material.
Fine Expanded Vermiculite (Grade 1–2, 0–3 mm)
Bulk density 120–160 kg/m³. Fine exfoliated flakes for horticulture and growing media, spray-applied fireproofing plaster, coatings, gypsum board and lightweight filler. Water absorption: 250–350%.
Medium Expanded Vermiculite (Grade 3, 3–6 mm)
Bulk density 90–130 kg/m³. The general-purpose grade for loose-fill insulation, lightweight concrete and screeds, packing and horticulture.
Coarse Expanded Vermiculite (Grade 4–5, 6–12 mm)
Bulk density 60–100 kg/m³. Coarse low-density flakes for cavity and roof insulation, high-temperature or refractory backup insulation to 1,150 °C and industrial packaging.
Crude (Unexpanded) Vermiculite Ore
Raw vermiculite concentrate for buyers who exfoliate on site, supplied from superfine to premium flake grade. Crude vermiculite uses HS 2530.10; expanded vermiculite uses HS 6806.20, so state the form on the purchase order.
| Grade | Particle size | Bulk density | Typical selection |
|---|---|---|---|
| Fine Grade 1–2 | 0–3 mm | 120–160 kg/m³ | Horticulture, plaster and board systems |
| Medium Grade 3 | 3–6 mm | 90–130 kg/m³ | Insulation, lightweight concrete and packing |
| Coarse Grade 4–5 | 6–12 mm | 60–100 kg/m³ | Low-density insulation and refractory backup |
| Crude ore | By flake grade | Confirmed by lot | On-site exfoliation |
Where buyers use Vermiculite
Horticulture, insulation, fireproofing and lightweight concrete.
Horticulture
Moisture and nutrient retention in growing media and propagation mixes.
Fireproofing
Non-combustible lightweight aggregate for spray and board systems.
Thermal insulation
Loose fill and lightweight screeds for roofs, floors and cavities.
Refractory use
Coarse low-density insulation for high-temperature systems.
Packaging, logistics and documents
Confirm the grade, quantity, destination and required document set before comparing delivered prices.
Supply details
- Packaging
- Compressed bags, jumbo bags or palletized bags
- MOQ
- By bag volume and particle size
- Loading
- FOB Tianjin, Qingdao or Shanghai
- Lead time
- 10-20 days after packing confirmation
- Incoterms
- FOB · CIF · CFR
Quality documents
0 public PDFsNo public asbestos-screening PDF is attached. Request the current laboratory report for the confirmed shipment and verify the named method, sample and result before PO.
No public PDF in the current product folder; request current files by grade
Request COA / TDS / MSDS →Buyer questions
Why are no documents shown?
The current product folder does not include public PDF documents for this item.
What information is needed?
Particle size, application, bag volume, quantity and destination port are enough to quote.
What is required for an accurate quote?
Send the grade or application, quantity, destination port, packing preference, governing standard and required documents.
Send the grade, quantity and destination port.
We will confirm price, packing, lead time and available batch documents for Vermiculite.