Clinker Kiln

Introduction

In clinker rotary kiln, clinker is opposite to raw material. Clinker refers to sintered ore or pellet produced by the high-temperature agglomeration of the concentrate powder and the ore-rich powder. Clinker can increase yield and reduce coke ratio. As the increasing demand in industry, the comprehensive utilization value of clinker is also upgrading. How to ensure greater use-value of clinker? Here I recommend rotary kiln for everyone. Clinker rotary kiln is a professional equipment designed according to the characteristics of clinker. The calcination process of clinker includes crushing and pre-homogenization, raw material preparation, homogenization of raw meal, preheating decomposition and clinker burning. Clinker rotary kiln has high calcination quality, less fly ash, high purity, excellent working environment and low energy consumption.

Clinker will be dehydrated, decarburized and whitened, so it has good performance stability.

Clinker Kiln Structure

shell in clinker rotary kiln

Clinker rotary kiln’s main part mainly consists of a cylinder, front roller ring, rear roller ring, gear and stop roller; tow roller, pinion, discharge part, lifting plate, reducer, motor, hot air duct, feed chute and furnace. The clinker rotary kiln can also add gas generators, combustion chambers or supporting hoists, belt conveyors, dosing feeders, cyclone dust collectors, and induced draft fans according to users requirements.

Clinker Kiln Working Process

In clinker rotary kiln, the suspension preheating and calcining kiln are collectively referred to as a new clinker rotary kiln. The new clinker rotary kiln has moved the preheating and carbonate decomposition of the clinker powder outside of the kiln while in suspension state. The thermal efficiency is high, which reduces the load on the clinker rotary kiln, and the clinker is not only low in heat consumption from 30﹪to 60﹪ but also further expands the production capacity of the kiln. The clinker rotary kiln is pre-fired well, the temperature in the kiln is high, the clinker cooling rate is fast, and the clinker is with high silicic acid ratio, high saturation ratio and high alumina oxygen ratio, and the clinker strength is high. The clinker rotary kiln feeds the clinker powder directly into the kiln for calcination. The moisture rate of the clinker is generally 1% to 2%, sparking a large amount of heat by drying required for clinker.


The main drive motor in the clinker rotary kiln transmits power to the open gear device through the main reducer. The raw material is needed from the kiln tail. Due to the inclination and slow rotation of the clinker rotary kiln, the raw material has produced a force to roll in a circumferential direction and while the move from a high end to a low end along the axial direction. The raw material in the clinker rotary kiln through decomposition, firing and other processes, discharged from the bottom end of the kiln cylinder into the cooling machine. Fuel is injected into the kiln from the kiln head. After the exhaust gas is exchanged with the material, it is led out from the kiln tail and discharged into the atmosphere by the chimney.

Kiln Operation Parameters

Product Standard(m)Kiln SizeMotor Power(kW)Gross Weight(t)Remarks
Diameter(m)Length(m)Inclination(%)Yield(t/d)Rotate Speed(r/min)
Φ2.5×402.5403.51800.44-2.4455149.61
Φ2.5×502.55032000.62-1.8655187.37
Φ2.5×542.5543.52800.48-1.4555196.29Outside Decomposition Kiln
Φ2.7×422.7423.53200.10-1.5255198.5
Φ2.8×442.8443.54500.437-2.1855201.58Outside Decomposition Kiln
structure of clinker rotary kiln

Clinker Kiln Advantages

  1. Clinker rotary kiln saves space. The cooler and kiln hood adopt integrated vertical design, and the clinker rotary kiln is supported by the roller device, so the clinker rotary kiln has strong running stability.
  2. Clinker rotary kiln has high flexibility of operation. The metering plunger pump with high metering accuracy is equipped with an auxiliary transmission device for preventing bending deformation of the kiln body.
  3. Clinker rotary kiln has high operating efficiency. The auxiliary drive works when the main power supply is disconnected.
  4. Clinker rotary kiln has strong adaptability. The raw materials and fuels have a wide adaptability range, and the kiln tail adopts a contact sealing device to avoid the unorganized emission of hot exhaust gas.