ISO9001 Rotary Kiln Exfoliated Vermiculite Production Process Machinery

Vermiculite is a member of the phyllosilicate group of minerals, resembling mica in appearance.

Vermiculite is a hydrated phlogopite mica which has the remarkable ability to expand to many times its original volume when heated, a property known as exfoliation. Being non-combustible and insoluble in water or organic solvents, vermiculite is safe and easy to handle, making it suitable for a wide range of different applications. The bulk density, size and aspect ratio of exfoliated vermiculite can be varied to suit particular end uses. Due to its inherent stability, vermiculite is being used increasingly in applications where health and safety are of prime importance.

Crude Vermiculite

Crude vermiculite from the Palabora mine consists of golden/brown flakes which are carefully classified into five grades - each having a specified range of particle sizes. The coarsest grade comprises particles ranging between 8mm and 2.8mm, while the finest grade consists of particles between 0.710mm and 0.250mm in size.

The loose bulk density of crude vermiculite varies with the grade, but is typically between 700 and 1050 kg/m3.

Unexfoliated vermiculite

Partially exfoliated vermiculite

Exfoliated vermiculite

Exfoliated Vermiculite

The exfoliation process is carried out commercially by passing crude vermiculite through a furnace chamber in a controlled manner. The crude vermiculite then expands at right angles to the cleavage planes, producing concertina-shaped particles many times their original volume.

Exfoliated vermiculite can be obtained from commercial exfoliators. If large quantities are required, the equipment needed to exfoliate vermiculite can be obtained from furnace manufacturers; details can be supplied by Hengyang Mining Company.

Crushing, Sorting and Heating from Mineral Ores:

Hengyang Industry is an Chinese Company based in Zhengzhou city that manufactures, on proprietary technology, plants and equipment for waste recycling and recovery with energy production, material recovery or production of finished goods.

Innovation, R&D, passionate and skilled team along with the customer satisfaction have always been the success of Hengyang and they still are the peculiarities of our Company. Besides the historical Hengyang equipment, like single and double shafts shredders, Crushing machine, briquetting machines, separators, squeezers and centrifuges, the Company offers a wide range of turn-key plants, among which:

• briquetting and pelletizing plants
• shredding plants
• Waste Sorting Plants
• Bio-fuel Plants
• Waste to Power Recycling Plants
• Mining Plants
• OEM Equipments
……..
Hengyang is able to develop customized solutions too.
Designed, constructed and assembled by the same Hengyang

The Company policy focuses on product quality: robustness and functionality of the machines that maintain their value over time.
The ability to challenge ideas and concepts and to interact with partners worldwide has allowed and still allows Hengyang to stay highly competitive and to be an ideal partner for the world market.