Brief Introduction of Mixing vertical twin shaft lime kiln process

1. Raw materials, fuel ingredients system In order to ensure the quality of calcined lime uniform, the design requirements of the supply of particle size 50 ~ 80mm (non-sheet) which (more than 80mm <5%, less than 50mm <5%).
 A. Raw materials. The limestone raw material unit is composed of underground raw material silo (one silo), rod gate, vibrating feeder and belt scale. Limestone is transported by the forklift truck from the raw material to the raw material warehouse, by the warehouse vibration feeder to the belt scale feeding into the belt conveyor, before weighing hopper stand into the kiln.
B. Fuel. The fuel unit is also located underground and is arranged in line with the raw material pit. It is composed of a fuel bin (a bin), a bar gate, a vibrating feeder and a belt scale. When Weigh hopper before kiln need to feed, the vibration feeder starts the belt said for the material, and then enter the belt conveyor to the kiln before weighing hopper feed. The fuel tank is constructed in the same manner as the raw material bin.

2. Vertical lime kiln part
A. Feeding system: When the kiln body level gauge indicates the need for loading, the mixture in the mixing chamber will fall into the feeding car. In the process of falling into the car, the fuel and raw materials go on the second mixing, thus ensuring uniformity mix the fuel and raw materials. When the car is filled with material, the delay time of 2 to 5 seconds to start the hoist, the hoist traction material car along the ramp bridge track up to reach the top of the kiln material by the kiln roof by the material device (receiving device for the sealed rotary distributor, To prevent the kiln outside the kiln when the air enters the kiln) will be eligible for uniform distribution of raw materials into the kiln.B. Combustion system: the material into the kiln evenly fall, followed by preheating zone, calcined zone, cooling zone into the finished product into the ash storage and transportation of active lime process.

3. Ash system
Cooling the lime is discharged into the dust hopper through the disc-type ash-discharging machine and the two-stage sealing valve, and then the vibrating feeder is put on the flat belt under the kiln (temperature resistance 150 ℃).
4. Dust removal system
The dust removal system refers to the raw materials, dust, finished dust, dust and dust collection in this program.
A. Raw material dust removal refers to the removal of dust from the dust during transportation and screening, which guarantee the project environmental protection demand.
B. Dust removal refers to the exhaust from the top of the kiln to remove large particles through the cyclone, and then through the composite water film desulfurization dust collector, the dust removal efficiency ≥ 98%, desulfurization efficiency ≥ 80%.