vermiculite with good quality
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Flakes of raw vermiculite concentrate are micaceous in appearance and contain interlayer water in their structure. When the flakes are heated rapidly at a temperature above 870oC, the water flashes into steam, and the flakes expand into accordionlike particles. This process is called exfoliation, or expansion, and the resulting lightweight material is chemically inert, fire resistant, insulated and odorless.
expansion coefficient:8-15 times
Size:0.1-1mm 0.7-2 mm 1-2 mm 1-3.5 mm 3.5-8 mm 8mm above as per customersrequest