Expanded Vermiculite Vermiculite Hydroponics Vermiculite

SiO2
MgO
Al2O3
Fe2O3
CaO
K2O
ph
Percentage %
37-42
11-23
9-17
3.5-18
1-2
Non
7-11Specifications
Item
Specification
Expansion ratios
5.5-11times
Bulk density of expanded vermiculite
90-270kgs/m3
Thermal Conductivity
0.045 - 0.069w/m °Casbestos
None
Hardness
1-1.5
Compressive resistance
100-150 Mpa
Melting point
1320°C-1370°C
Corrosion resistance
Alkali-resistant
2.Agricultural grade expanded vermiculite photos:
3.Some Vermiculite features
1). Physical appearance
Vermiculite refers to a small group of minerals resembling the lamella structure of the micas.It is dark gray brown to golden brown in color and flake-shaped when dry.When heated to intense temperatures vermiculite expands in volume and its lamellae separate,and thus exfoliate
2). Moisture retention
The space created by exfoliation trap moisture.Ideal for horticultural applications, vermiculite has the capacity to retain several times its weight in water.
3). Air circulation
Vermiculite flakes are irregular in shape allowing better air circulation when exfoliated, .Widely used in horticulture to aerate soil mixes or for hydroponic cultures.
4). Low density
Exfoliation cause a great increase in volume without an increase in mass.Being extremely lightweight,vermiculite is an ideal material to lighten aggregates such as concrete,plaster,and asphalt,and to fill walls and partitions Inert and neutral PH:7-11.
4.Vermiculite usage in agricuture :Professional vermiculite manufacturer/own vermiculite mine /Advanced equipment/High qualityflexible/Competitive price/Professional sales team
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