Low heat consumption, metallurgy rotary kiln, rational energy use, secondary air through the cooling lime preheated primary air into the combustion preheater through the beam, complete combustion of fuel, calorific value fully utilized, energy 900kcal / kg. The use of low calorific value fuel, kiln, air and gas preheating. Cooling the hot exhaust gases stone preheating mode, the temperature of the exhaust gas to reduce the low calorific value fuel is difficult to reduce technical problems. Storing / preheating zone accumulator / preheating zone in the upper part of the kiln, the storage tape can accommodate 2-3 hours using limestone, lime kiln, such as limestone handling and loading facilities during routine maintenance, not discontinued. In the storage material / preheating zone at the top, the device has an exhaust gas suction beam, where the exhaust gas is extracted from the kiln. Beam across the kiln exhaust gas suction section so that each part of the cross section of the suction force is consistent, so that the hot gas rising up evenly. Exhaust gas out of the kiln, the kiln section, first a heat exchanger to cool, then dust bag, after the dust released into the atmosphere through the chimney. Kiln Section, blue sky furnace (certified), rotary kiln by LUOZHUANG Kiln Ltd. Linyi City blue sky. Luozhuang District, Linyi City, blue sky Kiln Ltd. (www.lyshihuiyao.com) (www.lyshihuiyao.com) Shandong Linyi, refining and processing leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Kiln leadership in the blue sky with the staff warmly welcome all inquiries negotiations to create a better future for the kiln blue sky.