Kaolin rotary kiln

Kaolin rotary kiln is an important equipment in the production and sintering of kaolin. Generally, the temperature of rotary kiln should be above 950. Kaolin rotary kiln alias: Kaolin calcining kiln. It can also be used in bauxite calcining kiln, magnesia calcining kiln and zinc oxide calcining kiln. Kaolin has high whiteness, soft texture and is easily dispersed and suspended in water. It has good plasticity, high cohesiveness, excellent electrical insulation, good acid solubility, low cation exchange capacity, good fire resistance and other physical and chemical properties.

The technology of calcining ultra-fine kaolin in internal heat rotary kiln at medium temperature (950 ~1050 C) is mature and advanced in China, which represents the development direction of ultra-fine kaolin calcination technology. This calcination technology has the advantages of low energy consumption, high output, stable performance after dehydration, decarbonization and whitening. Calcinated kaolin has become a necessary mineral raw material for dozens of industries such as paper making, ceramics, rubber, chemical industry, coatings, medicine and national defense. As a result, the application of kaolin is more extensive. In some high-tech fields, kaolin is widely used as a new material. Even the high-temperature-resistant ceramic parts of atomic reactor, space shuttle and spacecraft are also made of kaolin.

Working Principle of Kaolin Rotary Kiln:

Kaolin rotary kiln operates at high temperature with alternating slow speed under heavy load. The maintenance of its accessories and the level of thermal system control are related to the safety and efficiency of rotary kiln operation. Maintenance of transmission device focuses on lubrication, running state, dynamic detection of equipment and meshing accuracy of big and small gears. The installation accuracy of supporting device determines whether rotary kiln can operate safely and reliably. In operation, attention should be paid to reasonable control of load distribution of each gear, the arrangement of supporting wheel and the up and down pressure of hydraulic gear. Time, force of supporting wheel, clearance between wheel belt and cushion plate. The quality of sealing device directly affects the thermal system and operation cost of rotary kiln. Strengthen the daily maintenance data collation and analysis of rotary kiln is conducive to the management of equipment.

Use of kaolin:

Kaolin has two main fields in paper industry, one is filler used in paper making (or paper making) process, the other is pigments used in surface coating process.

Characteristics of kaolin rotary kiln:

A. Use the most advanced hydraulic gear at home and abroad.

B. Measuring plunger pump with high accuracy.

C. Domestic advanced technology such as high precision speed control valve and contact graphite block sealing device.

D. Easy to operate and reliable to use.

E. The thermal system has been stabilized and the equipment operation rate has been improved.

F. Compared with the equipment of the same specification, the operation rate is increased by 10%, the output is increased by 5% - 10%, and the heat consumption is reduced by 15%.