Henan Hongke Heavy Machinery Co., Ltd. is pleased to report on the successful deployment of a complete clay ceramsite rotary kiln production line at a customer site in Nanchong, Sichuan Province, China. This project showcases our comprehensive capability in delivering turnkey solutions for lightweight aggregate manufacturing.
Project Background: Meeting the Demand for Lightweight Aggregate
Ceramsite (expanded clay aggregate) is a high-quality lightweight artificial aggregate widely used in building materials, refractory insulation, horticulture, and water treatment applications . The growing demand for energy-efficient construction materials has driven increased interest in ceramsite production across China's southwestern provinces.
Our customer in Nanchong identified the opportunity to produce high-quality clay ceramsite from locally available clay resources. They required a complete, reliable production line capable of processing raw clay into finished ceramsite products with consistent quality and stable output. They chose Henan Hongke Heavy Machinery as their partner because of our proven expertise in designing and manufacturing complete ceramsite production lines.
The Complete Production Process
The Nanchong clay ceramsite production line follows a well-established four-stage process: raw material preparation, granulation, calcination, and cooling/screening. This process flow is the industry standard for producing high-quality expanded clay aggregates.
1. Raw Material Preparation
Raw clay is fed from the storage bin into a twin-shaft mixer. The mixer crushes and homogenizes the clay, breaking down lumps and ensuring consistent particle size and moisture distribution. This step is critical for achieving uniform granulation in the subsequent stage.
2. Granulation
The homogenized clay material is then fed into a granulator (also known as a disc pelletizer or balling disc). The granulator forms the clay into spherical or ellipsoidal green pellets. The size of the pellets can be controlled by adjusting the granulator speed and inclination. Pellets that meet the required size range proceed to the next stage.
3. Calcination – The Core Process
The green pellets enter the ceramsite rotary kiln for high-temperature calcination. The kiln body is set at approximately 3° inclination to the horizontal, allowing material to flow gradually from the feed end to the discharge end as the kiln rotates. Calcination is carried out at temperatures between 950°C and 1,100°C. At this temperature range, the clay pellets expand and develop the characteristic porous structure that gives ceramsite its lightweight and insulating properties. The process requires precise temperature control across the kiln to achieve optimal expansion while avoiding over-sintering or product collapse.
4. Cooling and Screening
After exiting the kiln, the hot ceramsite enters a cooler where it is rapidly cooled from approximately 1,100°C to below 100°C. Controlled cooling is essential for preserving the product's mechanical strength and preventing cracking. The cooled material is then fed into a vibrating screen or trommel screen, where it is classified into different particle size grades. Finished products are then packaged or conveyed to storage.
Equipment Configuration
The complete production line supplied for this Nanchong project includes all necessary equipment for each stage of the process:
| Equipment | Function |
|---|---|
| Storage bin and feeder | Holds and feeds raw clay into the process |
| Twin-shaft mixer | Crushes and homogenizes clay material |
| Granulator | Forms clay into uniform green pellets |
| Ceramsite rotary kiln | High-temperature expansion and sintering of pellets |
| Cooler | Rapidly cools product to preserve quality |
| Screening equipment | Classifies finished products by particle size |
| Dust collection system | Captures particulates for environmental compliance |
| Conveying equipment | Transfers material between process stages |
The kiln is equipped with a variable frequency drive for precise speed control, advanced sealing systems to prevent dust leakage, and both main and auxiliary drive units to ensure reliable operation.
Why Henan Hongke for Your Ceramsite Project
With extensive experience in rotary kiln manufacturing and complete production line integration, Henan Hongke Heavy Machinery offers:
Custom engineering – Tailored solutions based on specific raw materials, capacity targets, and site conditions
Complete equipment supply – From crushers and mixers to kilns, coolers, and dust collection systems
Project management – Design, manufacturing, installation guidance, and commissioning support
Proven track record – Successful deliveries of ceramsite production lines across China and international markets
About Henan Hongke Heavy Machinery Co., Ltd.
Henan Hongke Heavy Machinery Co., Ltd. (Henan Hongke Machinery) has been designing and manufacturing industrial processing equipment since 2006. Our product portfolio includes:
Rotary Kilns – for ceramsite, lime, dolomite, metallurgy, and mineral calcination
Rotary Dryers – for sludge, biomass, and industrial materials
Ball Mills – for ore, slag, cement, and chemical grinding
Crushers – for primary and secondary size reduction
We provide complete production line solutions, from raw material handling to finished product screening, backed by professional engineering and after-sales support.
Let's Talk About Your Ceramsite Project
Whether you plan to produce ceramsite from clay, shale, sludge, or other raw materials, we can design and supply a complete production line tailored to your specific requirements.
Contact Henan Hongke Heavy Machinery Co., Ltd. – we provide one-stop solutions for your mining and materials processing needs.
Henan Hongke Heavy Machinery Co., Ltd.
Rotary Kilns | Rotary Dryers | Ball Mills | Crushers – Built for Reliability, Backed by Service