Lightweight aggregate (LWA) has a long track record of quality and performance in construction industry. Since its development in the early nineteen hundreds, LWA produced by the rotary kiln process has been used extensively in asphalt road surfaces, concrete bridge decks, high-rise buildings, concrete precast and pre stressed elements, concrete masonry and geotechnical applications. Naturally available raw materials suitable for manufacturing lightweight mineral granules are pumice, perlite, vermiculite, expandable clay and slate. The quality of LWA results from a carefully controlled manufacturing process. In a rotary kiln, selectively mined shale, clay or slate is combusted (firing) in excess of 2000°F. The LWA material is then processed to precise gradations. The result is a high quality, lightweight aggregate that is inert, durable, tough, stable, highly insulated, and free draining. Moreover, the expanded clay production process allows nondangerous waste materials to be reclaimed and thereby avoids the necessity to dispose of them in a landfill or dump—this benefits the environment and also offers economic advantages. LWA gives designers greater flexibility in creating solutions to meet the challenges of dead load, terrain, seismic conditions, construction schedules and budgets in today’s market place.

Expanded clay shale (ECS) and light weigh expanded clay aggregate (LECA) are among the common lightweight materials that have been applied successfully in geotechnical application.

Typical properties of LECA manufactured from natural and waste materials

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.