1 is not enriched ultra-high-temperature calcination technology refractories industry three technologies: high-purity raw materials, high-pressure molding and high temperature firing. In the high-temperature firing regard, China has developed an ultra-high-temperature calcination without oxygen enrichment technology, and have been in ultra-high-temperature tunnel kiln, ultra-high temperature shaft kiln, ultra-high temperature kiln has been widely used. The main technical features of these ultra-high temperature furnace is under Yutian lime kiln, not oxygen-rich conditions, the firing temperature is above 1800 ℃. Techniques to achieve ultra-high temperature are: the use of high calorific value fuels such as oil, natural gas and so on; using a variety of kilns respective characteristics of combustion air preheating and calcination intensive products; the reasonable control of combustion air ratio, and ultimately achieve furnaces The high temperature efficiency. Ultra-high-temperature tunnel kiln is mainly used for ultra-high-temperature tunnel kiln firing products, firing temperature up to 1800 ℃ -1900 ℃, high temperature technology is mature, reliable, has been widely used in high-purity magnesia, magnesium, chrome, magnesium aluminum quality and corundum firing and other products. At present, ultra-high-temperature tunnel kiln has been built a few articles, the main technical performance are: kiln length: 50m-130m; kiln width: 1.1m-3.2m; production capacity: 5000t / a-32000t / a; heat consumption per unit of product: 6600kJ / kg-6900kJ / kg. Ultra-high-temperature tunnel kiln use of the double dome preheat combustion air to a temperature up to about 1000 ℃, which is conducive to improving the firing temperature, but also extend the life of the kiln lining dome effect divided by fuel co-firing kiln, namely burning solid fuel, coke, coke and coal. Gas kiln. Including gas-burning kiln firing blast furnace gas, coke oven gas, Leting lime kiln, calcium carbide exhaust gas, furnace gas and natural gas. By kiln-shaped points, Changli lime kiln with shaft kiln, rotary kiln, sleeve kiln, Xi Dewei Masterton kiln, kiln Myers (Switzerland), Fu Kasi kiln (Italy) and the like. While there are positive pressure and negative pressure operation of operating a kiln kiln points. Linzhou modern technology center designed by the 300 cubic meters or less co-firing kilns and 140 cubic meters less gas kiln, in particular blast furnace gas and coke oven gas combustion energy-saving and environmental protection lime kiln XD. Capturing the high calorific value of coke oven gas, lime kiln, a short flame burning problem, the remaining coke oven gas can be fully utilized. Coke oven gas from the original "point day light" pollution of the environment becomes a create benefits for enterprises valuable energy. Small and medium steel companies, coking enterprises, calcium carbide enterprises, and refractory industry are very good and effective way to energy-saving, environmental protection and synergistic. Yutian lime kilns, lime kilns, furnaces blue sky by LUOZHUANG Kiln Ltd. Linyi City blue sky. Luozhuang District, Linyi City, blue sky Kiln Ltd. (www.lyshihuiyao.com) (www.lyshihuiyao.com) strong, credible, in Linyi, Shandong smelting and processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead blue sky kilns and you hand into the brilliant, for a better future!