Vermiculite is a naturally occurring mineral that takes the form of glossy flakes, varying in color from dark gray to sandy brown. These flakes, which are more specifically a hydrated magnesium iron aluminum silicate mineral, get heated up in a purpose-built a commercial furnace, where they then expand and take on a concertina shape, almost like a tiny accordion.
It is this version of vermiculite that is used in horticulture most commonly as a means of improving soil quality or giving seedlings a helping hand to root more quickly.
Vermiculite in its natural form looks a lot like mica, with a layered rock appearance. It is mined in various regions throughout the world.
Open cast mines look like giant craters in the ground, where the miners work to separate ore from vermiculite and other minerals, then sort them into different categories based on size. Following its extraction from the earth, the vermiculite is heated in industrial furnaces, where it will change in structure. This process is called ‘exfoliation.’ Exfoliated vermiculite transforms into small strands that look like worms, and this is how vermiculite got its name, from the Latin word ‘vernacular,’ which translates roughly to ‘to breed worms.’
Once the exfoliation is complete, the finished product will vary in looks, depending on its size. There are four sizes of vermiculite available, with the largest size having an obvious concertina shape. The smallest sizes to the human eye just look like large grains of sand.
Crushing and Sorting from Mineral Ores:
 | Vibrating Separator and Feeder Capacity: 5-200t/h |
 | Jaw Crusher Crushing coarse materials into small sizes. Capacity: 0.5-200t/h |
| | Vertical Sand Crusher Crushing materials into sand, better for future separating. Capacity: 2-180t/h |
 | Rotary Screen Separating material into different sizes. Capacity: 5-400t/h |
 | Rod Mill Grinding Material into powder Capacity: 1-60t/h |
 | Dust collector Recycling and Dust cleaning Capacity: match with the plant |
 | Rotary Kiln Exfoliation in higher temperature. Capacity: 0.9-70t/h |
 | Rotary Dryer Dewatering material Capacity: 1-120t/h |
 | Rotary Cooler Cooling material from higher temperature to normal. Capacity: 1-150t/h |
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Vermiculite Production Machinery Rotary Kiln Equipments ISO9001 Images
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