The raw materials for producing sludge ceramsite mainly include sludge, shale, etc.

The process of producing ceramsite in this production line is: raw material crushing, grinding, drying → raw material batching → aging → raw material loading → raw material mixing → granulation → shaping and screening → calcination → cooling → screening → storage.

The shale required for the production of the shale crushing system requires a moisture content of ≤13% and a block size of >350mm. It is transported by truck to the shale storage yard in the factory for storage. The stacked shale is first transported to the hopper by a loader. Under the action of gravity, the shale raw materials enter the jaw crusher evenly and stably through the lower rod feeder for coarse crushing. The shale particle size is broken to Below 80mm. The lower part of the jaw crusher is equipped with a belt conveyor. The crushed shale is sent to the impact crusher for secondary crushing through the belt conveyor. The shale particle size is crushed to less than 30mm, and then sent to qualified particle size shale by the belt conveyor in the lower part of the impact crusher. Raw materials are stacked in the yard.

The entire crushing system uses a sealed belt conveyor and is equipped with a bag dust collector to remove dust from the entire environmental dust points, greatly improving the operating environment of the entire system.

The rotary kiln uses rice bran as fuel. The rice bran transported from outside is unloaded to the Gukang warehouse, transported to the rice bran receiving hopper by a loader, and then lifted to the top of the rice bran silo by a bucket elevator. The discharge port of the bucket elevator is connected to the discharge chute. The chaff can be directly discharged into the 1# chaff silo, or it can be transported to the 2# chaff silo through the screw conveyor. The chaff silo is equipped with a speed-adjustable feeding screw conveyor, and the chaff is unloaded into the bran conveying air duct through the outlet of the speed-adjustable screw conveyor. A chaff air blower is equipped upstream of the air duct, and the fan blows the chaff in the air duct to the air inlet of the burner at the kiln head of the rotary kiln. The burner is equipped with a chaff wind dispersing device. The chaff and wind are fully evenly mixed and then blown into the rotary kiln for combustion. Both the fan and the feeding screw are equipped with frequency conversion speed control devices, which can adjust the proportion and amount of air bran, making it easier to adjust the amount of air bran during the production process of the rotary kiln, making it more convenient to use.

In this project, the bag dust collector is equipped with an offline dust cleaning bin, which can satisfy the requirement that during the online dust removal process, one bin is in the offline dust cleaning state to achieve stable operation of the entire system. The coarse dust removed from the bottom of the bag dust collector is discharged into the scraper ash discharger through the dust discharge valve, and is discharged centrally to the dust bin.