Inner Mongolia 150,000 Tons/Year Calcined Kaolin Project

Project Overview

This 150,000 tons/year calcined kaolin project of Inner Mongolia Company adopts a rotary kiln for kaolin calcination. Featuring excellent calcination performance, large capacity, high operation rate, low energy consumption, stable and reliable operation, as well as easy operation and maintenance, it enables energy-saving, consumption-reducing and environment-friendly production.

**Product Name**: Rotary Kiln

**Equipment Model**: φ4.2×76m Rotary Kiln

**Production Capacity**: ≥21 t/h

Solution

1. A material return scoop is arranged at the kiln tail to avoid dead zones at the feeding inlet. Cold air sleeves and guard plates are installed at both the kiln head and kiln tail. The guard plates are made of heat-resistant steel castings with a structure convenient for replacement.

2. The transmission section is equipped with a variable-frequency speed-regulating motor, which allows real-time speed adjustment according to actual working conditions. The variable-frequency motor and gear drive system provide power for kiln rotation and shutdown. It features energy conservation, environmental protection, high efficiency, high speed regulation precision and stable operation.

3. Auxiliary Drive

An auxiliary drive motor is configured to support kiln turning in case of main power failure, so as to prevent barrel bending and deformation and facilitate maintenance. An electro-hydraulic block brake is equipped to avoid reverse rotation during kiln shutdown.

4. Riding Wheel Blocking Device

A hydraulic thrust roller is adopted. Driven by pressure supplied from the hydraulic station, the thrust roller and kiln body realize automatic upward and downward movement of the kiln without manual intervention.

5. Kiln Head and Kiln Tail Sealing Device

Three-layer flexible sealing (stainless steel sealing scales + carbon-silicon-aluminum fiber composite board) combined with labyrinth structure is applied. It delivers low air leakage rate, superior sealing performance and higher reliability, together with long service life and easy replacement, which can greatly cut maintenance costs.