The production process of clay ceramsite is generally divided into five stages, raw material preparation, drying, preheating, calcination and cooling. The shale raw ore is crushed by a jaw crusher, and then sieved after crushing. The raw materials with a particle size of 3mm-5mm are selected as the raw material, and then the raw material is sent to an electric furnace for preheating. After the preheating is completed, it is immediately sent to the electric furnace that is already at the target temperature Medium roasting. After the roasting is completed, the mixture is cooled to obtain ceramsite.The detailed clay ceramsite production process is as follows:

1. Raw Material Process

We get the material by loader and do the proper mixing ration. And then the material will be fed into silo.When the clay size is too big, it should be crushed by roller crusher to get small size.

2. Mixing and Granulating

Set up an apron feeder under the hopper. Feed the material into a double shaft mixer. Then the material fall into a double roller granulator to become 5-10mm sphere shape material. And then they are fed to an insert type rotary kiln by belt conveyor.

3. Preheating and burning.

When the sphere shaper material enter into the preheating kiln by chute. The moisture will be dried and then the material will be fed into the burning kiln to become the Light Expanded Clay Aggregate (LECA) with bulk density of 500kg/m3.

4. Cooling

Light Expanded Clay Aggregate (LECA) outlet from the kiln will be fed into the cooler. Cooler shall adopt the single drum cooler, vertical cooler, grate cooler,etc.

5. Fuel Combustion

Coal, natural gas and biomass fuel are good choices as fuel.

6. Kiln Inlet Dust Collect

Gas from kiln inlet will be processed by air cooler machine and then sent to the bag filter for dedusting. And then it will be sent to the air.

7. Final Product Screening and Packing

The Light Expanded Clay Aggregate (LECA) outlet from rotary cooler and then fed into a vibration screen (or rotary screen). They will be screened into the size of 5mm, 15mm and 25mm. The different size will be packed in different bags, which will loaded for sales.