Expanded Shale is a lightweight aggregate that is an ideal growing media for hydroponic or aquaponic systems. The shale is mined, crushed and fired under high temperatures in a rotary kiln, producing a clean, inert, porous, and light material.

Because of the large amount of cracks and fissures in the expanded shale, the media can retain a large amount of moisture which can reduce the amount of flooding cycles needed for flood & drain (ebb & flow) systems. For aquaponic systems, there is a large amount of surface area per stone for producing beneficial bacteria for converting ammonia into nitrates.

Expanded shale has been used for nearly 100 years primarily as a building material. It is added to concrete to make lighter buildings and bridges since it is half the weight of standard crushed stone. The aggregate is also used as an additive in clay soils to increase its drainage properties as well as a decorative mulch around buildings and Gardens.

Expand Shale Production line included listed- Equipments:
Crushing-system
Conveying System
Calcination system
Cooling system
Dust collector
Packing
Separating
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Capacity: 100TPD-800TPD

Henan Dajia Company is specilized in Produce and install whole production, contact with me via skype: gary102884 if need our machineries. But you need to tell us:

What is the production capacity you prefer?
What is the raw material and its size?
What kind of fuel do you like you to use in kiln?
.....
My pleasure to provide you technical details with quotation if let me know.