Import Agriculture Vermiculite — Buy in Bulk from Supplier in China

Agriculture vermiculite from Great Wall Mineral is a hydrated magnesium iron aluminum silicate hydroxide, supplied in flake or powder form, with the chemical formula (Mg, Fe, Al)3(Al, Si)4O10(OH)2·4H2O. The mineral’s structure allows it to expand rapidly when heated above 870°C, increasing its volume by 2000 to 3000% due to the conversion of interlayer water to steam. This expanded form is lightweight, chemically non reactive, and fire resistant, making it suitable for agricultural and industrial applications.

The mineral’s physical properties include a monoclinic crystal system, perfect basal cleavage, and a pearly to greasy luster. Its hardness is 1.5 on the Mohs scale, and it has a specific gravity of 2.3, which is below average for minerals. Vermiculite is typically brown to golden brown, though it can also appear white, colorless, or yellow. The expanded grades offered by Great Wall Mineral include Premium (6), Large (4), Medium (3), Fine (2), Superfine (1), and Micron (0), with densities ranging from 3.5 to 10.0 lb/cu ft depending on the grade.

In agriculture, vermiculite is used as a soil conditioner to improve aeration and water retention, as a carrier for fertilizers and pesticides, and as bedding for livestock due to its absorbent properties. Industrial applications include its use as a heat resistant additive in concrete and ceramics, and as an absorbent for toxic liquids such as fertilizers and herbicides. Great Wall Mineral supplies vermiculite in 100 liter bags measuring 110cm by 70cm, and can produce custom grades tailored to specific buyer requirements.

Great Wall Mineral is based at 282 North Zhonghua Street, Shijiazhuang, Hebei, China, and operates as a harbor trust tier supplier. The company specialises in the production and supply of vermiculite, offering both standard and custom grades to meet specific industrial and agricultural requirements. While the listing does not provide details on response rates or certifications, the supplier’s focus on tailored solutions suggests a flexibility to accommodate buyer needs.

The supplier’s product range includes expanded vermiculite in multiple grades, from Premium to Micron, catering to applications that require varying particle sizes and densities. Great Wall Mineral’s ability to produce custom grades indicates a capacity for bespoke manufacturing, which may be advantageous for buyers with unique specifications. However, buyers should confirm the supplier’s compliance with relevant quality standards, such as ISO or industry specific certifications, as these are not explicitly stated in the listing.