Rotary kiln inside lining wear resisted solution

Rotary kiln inside lining wear resisted solution

Rotary kiln is used for physical or chemical processing in building materials, metallurgy, chemical industry, environmental protection and many other production industries. In any operating condition, it is essential for rotary kilns to be high wear resistance of the inside lining. In order to improve wear resistance of rotary kiln lining materials, we may take the following measures:
Choice of wear resistance main materials: generally Rotary kiln lining is composites material. The super high aluminum is used as main material, and we take additives with anti-acid, and anti-hot earthquake features as secondary material.
Critical particles size efforts distribution: critical particles size and grain degrees distribution is closely related with material construction performance and using performance. Construction lining layer thickness and the shape complex degree decide critical particles size;
Requirements on combination agent: suitable condensation hardening time. In the whole using temperature range, it should be high enough strength and stability of combination strength. An certain of anti-acid or alkali atmosphere environment, so as to collapsibility does not occur when in use; We fill super micro-powder in material gap, which can reduced friction between aggregate and powder material. In the work of dispersed agent, it can greatly reduced construction water, improve material tight degree, strength and wear resistance; Besides, in the way of adding appropriate steel fiber in pouring material, we can extend its using life and greatly improve wear resistance performance; It is also one of the necessary consolidation measures that wear layer structure which is made of wear refractory pouring material and refractory prefabricated pieces.
On the other hand, in terms of environmental protection, the developed countries in the world already have a history of more than 20 years that they use rotary kiln burning dangerous materials and waste. That not only reduces useless materials and makes them harmless, but also makes use of waste as fuel. It saves coal powder and completes waste management.
In construction industry, in addition to being used to burn cement aggregates, rotary kiln can also be used to burn clay, clime and drying ore slag. In the production of refractory materials, we use rotary kiln to calcination raw materials, which increased its dimensional stability, strength, and then molding. And there are other mining machines, for example. In nonferrous and ferrous metal, such as iron, aluminium, copper, zinc, Tin, nickel, metals. We use rotary kiln as smelting equipment. Rotary kiln can be used to roast ores, concentrates and intermediate. In ore concentration process, we use rotary kiln to do magnetic roast to lean iron ore. In this way, original ore becomes strong magnetic iron, so that magnetic selection. In 1960s, American Lapple invented new phosphoric acid production method by using rotary kiln. This method was promoted in no time because of its obvious advantages.