New refractory materials help cement machinery manufactures to save energy and reduce consumption

In recent years, China's economy has been carried out at a high develop speed, but the energy efficiency is generally low. According to the "energy-saving emission reduction" Twelfth Five-Year Plan " data, China's domestic consumption accounted for about 8.6% of the world, but the energy consumption accounted for 19.3% of the world, the unit consumption of energy consumption is still2 times of the world's average level. Among them, the national steel, building materials, chemical and other industries unit energy consumption is 10% -20% more than the international advanced level.

Cement industry as an important building materials industry, energy conservation and emission reduction bear the brunt of the pressure. Facing the national and local continuous improvement of energy consumption standards, while at the same time the industry situation is serious; enterprises to reduce the inherent cost of production requirements both requires cement enterprises to actively carry out energy-saving technological transformation.

In cement production, the heat is mainly consumed in the clinker calcination. It is found that the heat loss during the calcination process mainly in three aspects: the heat loss of the surface heat dissipation of the kiln system; the heat loss of the exhaust gas from the system; and the heat loss of the cooler clinker. In recent years, with the vertical grinding mill and low-temperature waste heat power generation technology maturity, the system exhaust heat loss has been fully utilized; it is important to reduce the heat loss of the surface heat dissipation of the kiln system.

Low thermal conductivity multi-layer composite mullite brick invention successfully solved the current ordinary cement kiln lining refractories exist high thermal conductivity, high temperature mechanical properties and other issues.

Products have multi-storey composite structure, using the working layer, insulation layer and insulation layer three composite structures. Through the study of the material composition, the preparation process and the bonding method and the bonding strength of the working layer and the insulation layer, the technology of synchronous molding and synchronous firing is used to solve the high temperature cracking, deformation and shedding caused by the mismatch coefficient of the multilayer composite material and improve the thermal conductivity and thermal shock stability of the product; the use of zirconium refractory fiber as the insulation layer and structural optimization, effectively reducing the overall thermal conductivity of the material.

In actual use, the product can not only meet the requirements of cement kiln use, and the insulation effect is good, the cylinder surface temperature can lower 50~80℃, while reducing the weight, is conducive to extend the service life of equipment ofcement machinery manufacturers.

source：http://www.hcmilling.com/news170407