A method for preparing the inner lining of a non-ringing pellet rotary kiln

Abstract

The invention relates to a preparation method for a pellet rotary kiln lining without ring formation, belonging to the field of refractory materials. The preparation method is characterized by comprising the following steps: weighing of raw materials, mixing, water addition and stirring, pouring molding, and low-temperature firing until shaping is completed. The preparation method provided by theinvention fully utilizes titanium-iron alloy industrial by-products as raw materials, solves the problem of treatment of industrial solid wastes, realizes waste reutilization, and prepares a high-performance rotary kiln lining at the same time. The rotary kiln lining prepared by using the preparation method provided by the invention has the characteristics of good wear resistance and no ring formation, so the trouble of clearing rings in the process of application is solved, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of preparation technology of refractory materials, and relates to a preparation method of anti-ringing pellet ore rotary kiln lining refractory materials. Background technique [0002] Domestic ironmaking mostly uses pellets as raw materials, and iron ore powder needs to be pelletized into pellets and then roasted in a rotary kiln before being used. Due to the high content of impurities in iron ore powder and rotary kiln fuel, such as SiO 2 , CaO, Na 2 O, Fe 2 o 3 etc., often produce low-melt phase with the pellet lining refractory material at high temperature, and thus adhere to the surface of the rotary kiln lining refractory material to form a ring. As the ring becomes thicker and thicker, production will be affected, and the kiln needs to be stopped for ring cleaning. , because a large amount of iron ore powder is contained in the ring formation process, the ring is heavy, high in strength, difficult to clean, ...

AI Technical Summary

Problems solved by technology

[0002] Domestic ironmaking mostly uses pellets as raw materials, and iron ore powder needs to be pelletized into pellets and then roasted in a rotary kiln before being used. Due to the high content of impurities in iron ore powder and rotary kiln fuel, such as SiO 2 , CaO, Na 2 O, Fe 2 o 3 etc., often produce low-melt phase with the pellet lining refractory material at high temperature, and thus adhere to the surface of the rotary kiln lining refractory material to form a ring. As the ring becomes thicker and thicker, production will be affected, and the kiln needs to be stopped for ring cleaning. , because a large amount of iron ore powder is contained in the ring formation process, the ring is heavy, high in strength, difficult to clean, time-consuming and laborious, and has potential safety hazards. Therefore, there is an urgent need for a ring-resistant pellet rotary kiln lining refractory material to solve the above problems

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