Lime rotary kiln has many advantages in the calcination of lime, it is also known as the lime kiln, and is a professional, strong calcining equipment, Its main advantages include great production capacity, no noise, low energy consumption, and so on.
1.New technology
the main drive system adopts a new type of AC frequency conversion speed regulation technology. Compared with traditional electromagnetic speed regulation and DC speed regulation, it is more energy-saving and environmental protection and has a wide range of speed regulation, high efficiency, and high-speed regulation precision, and stable operation.
2.Installation accuracy and reliability
After welding the base of the supporting device of the supporting wheel and the retaining wheel, and eliminating the welding stress through vibration aging treatment, integrated processing and manufacturing can be carried out by using a large vertical lathe and boring and milling machine, which can guarantee the machining accuracy and shape and position tolerance requirements of each part and significantly improve the installation accuracy and reliability of the whole machine.
3.Smooth operation
According to the characteristics of limestone and its’ calcination process requirements, the overall structure optimization design was carried out for kiln head and end sections, which solved the problems of return materials of kiln tail and dust leakage commonly existed in common rotary kilns, making the transportation more smooth and natural.
4.Stable quality
The limestone is uniform in heat, stable in product quality, low in over-burnt rate, especially suitable for calcination of high activity lime for steelmaking.
5.Flexible process configuration
vertical preheater can be configured at the end of the kiln to make full use of the high-temperature flue gas calcined in the lime rotary kiln, preheat the limestone from normal temperature to the initial decomposition state, improve the product activity, and facilitate transportation and storage.
Working Principle
Limestone is fed into the kiln through the chute at the end of the kiln. Due to the tilt and slow rotation of the kiln body, the limestone rolls along the circumference on one side and moves from the end of the kiln to the kiln head on the other side along the axis. The fuel is sprayed into the kiln from the end of the kiln through the burner for combustion, and the heat is transmitted to the limestone by radiation, convection and conduction. After the limestone is calcined into quicklime during the moving process, it is discharged from the end of the kiln, and the high-temperature flue gas enters the dust removal system from the end of the kiln.
Feed is generally kept below 25 mm, up to 30–40 mm for large mills. Oversize hits liners and balls and lowers efficiency, so crushing and screening precede the mill to even the feed. Even feed protects the host, extends liner life and keeps running smo
Oversized lumps break stable material bed on grinding table, sharply increase main‑unit load and trigger violent vibration. Local impact wear on roller sleeves and table liners accelerates. Output drops and powder particle size fluctuates. Severe cases
Its adjustable fineness ranges from 325 mesh to 2500 mesh, D97 down to 6‑8.5 μm, controlled by multi‑rotor classifier. Higher classifier speed delivers finer powder. Actual fineness is affected by material hardness, feed moisture, feeding rate and
Vibrator serves as vibration power source for S5X screen. Rotating eccentric blocks generate centrifugal force to drive screen box into circular motion. Vibrator quality determines amplitude and frequency, affecting material throwing state and screening
The LM Vertical Slag Grinding Mill is built for ground granulated blast-furnace slag (GGBS); product specific surface area is adjustable between 4200 and 4800 cm²/g, about 400–500 mesh. Coordinated analyzer speed and airflow stably yield high-activity
Abnormal vibration often comes from uneven hammer wear causing rotor imbalance, loose bolts, tramp metal or bearing damage. Stop to check rotor balance and hammer symmetry, confirm no metal, and recheck bearing temperature. Contact the maker if it persis
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