Ningshu has a process line for expanded vermiculite. Vermiculite, a mineral, hydrated magnesium aluminium silicate with a highly variable and complicated chemical compound. It crystallises in a monoclinic crystal system, in most of cases in a form of plate clutches. Yellowish, brown, olive colour. It is a product of mica (phlogopite or biotite) erosion. It is mainly mined in the USA, Africa (South Africa and Madagascar), Australia, Asia (China). In Poland, it is found at Lower Silesia, but in volumes not suitable for mining.
A specific property of vermiculite is volume increase (even 30 times) during high temperature treatment, and in this process, expanded vermiculite is produced. Vermiculite in exfoliated (expanded/expanded) form is light, inflammable, compressive, highly absorbable, inert and may have high positive ions exchange ability.
Expanded vermiculite is a good sound and heat insulator (inflammable) suitable for temperatures from below -200° C to +1200° C.
Golden Expansion / Exfoliated Vermiculite
Bulk density: 130-180kg/m3
The following grades are supplied in either 50l, 100L/1000L/1500L bags.
- Grade 1 (20-40mesh), 40-60mesh
- Grade 2 (1-3mm)
- Fine Grade 3 (2-4mm)
- Course Grade 4 (3-6mm)
- Course Grade 5 (4-8mm)
Silver expanded vermiculite
Bulk density: 90-130kg/m3
Size: 40-60mesh, 20-40mesh, 0.3-1mm, 1-3mm, 2-6mm, 4-8mm etc.
Characteristics & Benefits
High water holding capacity.
Non-abrasive and non-irritant.
Absorbs excess nutrients.
Facilitates re-wetting.
Low alkalinity.
Free from disease, weeds and insects.
Good air holding capacity.
Insulates and minimizes soil temperature fluctuations.
Is clean, odorless, lightweight and safe to handle.
Non-toxic, flavorless etc.
Chemical composition:
| Item | Content % |
| SiO2 | 37.6% |
| AL2O3 | 11.8% |
| K2O | 6.4% |
| Fe2O3 | 5.15% |
| MgO | 21% |
| CaO | 1.51% |
| PH | 6.5-7.5 |
| Moisture | 1.0% max |
| Impurity | 5.0% max |
| WHC | 300% MN |
Expanded vermiculite applications, including the following:
As perlite, expanded vermiculite is applied in the manufacturing of construction materials: insulation and fireproof (its melting temperature is 200 C higher, compared to perlite) and as the filler for manufacturing light concrete.
In the industry, wherever a high or low-temperature insulation of manufacturing processes is necessary, vermiculite is used as a compound of thermal insulation backfills in furnaces and cryogenic chambers.
In the gardening, as an additive to multi-compound substrates, improving water and air relations, a carrier of positive ions and as a mushroom culture substrate.
In animal husbandry, as an additive to forage (a carrier of vitamins and minerals) as well as a padding for animals.
Packaging:
50L/80L/100L/125L BAG, JUMBO BAG as 1000L/1500L;
PP woven bag, PE bag, palletized packing or as customer's request
Poly woven bags, Plastic bag, palletization service or as your requirement.
Shipping Detials:
300Bag, 30M3 in a 20'GP, Packed in 100L Loose bag packing;
730Bag, 73M3 in a 40'HQ, Packed in 100L Loose bag packing;
Loading port: Xingang Port, Tianjin
Payment Terms: LC, T/T, Western Union, Money Gram, Paypal.
Production Capacity: 15000CBM per month
Similar product: Expanded perlite 
Contact Us
Jenny
SHIJIAZHUANG NINGSHU TRADING CO.,LTD
Web: ningshu.en.made-in-china.com