Mixed-fired Rotary Lime Kiln For Limestone Calcination

Description:

The lime rotary kiln, also known as a rotary kiln, is a dynamic calcination device falling under the category of building materials equipment.  Its notable advantages include substantial production capacity, noiseless operation, and low overall energy consumption.  As a pivotal processing tool for lime production, it holds significant industrial value, resulting in a high current demand.  Lime finds widespread applications in various fields, such as construction, building materials, metallurgy, chemical industry, light industry, environmental protection, medicine, and agriculture.  Particularly in industries like steelmaking, ironmaking, sintering, copper, aluminum smelting, and others, lime plays a crucial role as a slagging agent, solvent, or sintering material.  This extensive range of applications highlights the versatility and importance of the lime rotary kiln in diverse industrial settings.

Specifications:

Working Principle:

Limestone is introduced into the kiln through the chute located at the kiln's end.  Utilizing the tilt and gradual rotation of the kiln body, the limestone travels along the circumference on one side, progressing from the kiln's end to the kiln head along the axis on the opposite side.  Fuel is introduced into the kiln through the burner at the end, undergoing combustion, and the generated heat is conveyed to the limestone through radiation, convection, and conduction.  As the limestone undergoes calcination and transforms into quicklime during this motion, it is expelled from the kiln's end.  Simultaneously, the high-temperature flue gas is directed into the dust removal system from the kiln's end.

Competitive Advantage:

lInnovative Technology: The primary drive system now employs advanced AC frequency conversion speed regulation technology.  This technology, in comparison to traditional electromagnetic and DC speed regulation, stands out for its energy efficiency, environmental friendliness, wide speed regulation range, high precision in speed regulation, and stable operation.

l Precision and Reliability in Installation: Following the welding of the supporting wheel and retaining wheel's supporting device base, and the elimination of welding stress through vibration aging treatment, the use of large vertical lathes and boring and milling machines for integrated processing ensures the machining accuracy, shape, and position tolerance of each part.  This approach significantly enhances the installation precision and reliability of the entire system.

lSmooth Operation: To address issues like kiln tail return materials and common dust leakage found in conventional rotary kilns, the kiln head and end sections underwent overall structural optimization.  This design ensures smoother and more natural material transportation, aligning with the specific characteristics of limestone and its calcination process requirements.

lConsistent Quality: The limestone exhibits uniform heating, resulting in stable product quality and a low over-burnt rate.  This makes it particularly well-suited for the calcination of highly active lime for steelmaking.

lFlexible Process Configuration: The addition of a vertical preheater at the kiln's end allows for the full utilization of high-temperature flue gas from the lime rotary kiln.  This preheats the limestone from ambient temperature to the initial decomposition state, enhancing product activity and facilitating transportation and storage.