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    As is known to all, for a production enterprise of glass furnace is the heart of the enterprise, glass furnace and reasonable structure, excellent masonry quality and success of baking furnace for extending the service life of the furnace and improve the quality of glass products production is of great significance. With the development of industrial technology, glass kiln longer service life, heat utilization and glass quality improved significantly, this and to promote the quality of refractory, the emergence of new refractory materials. Especially in the last century fused refractory development has close relationship. Because the fused refractory material has high density, high temperature wear resistance, good mechanical properties and glass erosion resistance, so the important part of the glass furnace is replaced for zirconium fused corundum brick. For many years in our country, after the completion of the size of the glass furnace for ignition oven basic it is tradition that the old, the furnace heat up 10-13 days later, inside the furnace temperature range 800-850 ℃ over the fire, and in the temperature between far mainly considers the siliceous refractory clay refractory internal structure and crystal transformation, according to these two kinds of refractory thermal expansion coefficient and temperature range set temperature curve, the fire. Domestic glass furnace baking furnace, the temperature preheating period, basic can do it according to the temperature curve, and timely adjust the brace, make each part of the furnace refractories expansion uniformity. But in 800-850 ℃ after the fire, 850-1200 ℃ range from large temperature fluctuations, and difficult to control, sometimes fluctuate more than baidu in one hour, it will cause the fierce change of refractory materials, especially the fused refractory crystal transformation happens in 950-1200 ℃, with 6.9% of the volume contraction. So in this temperature range, temperature operation be especially considering fused AZS materials, such as the temperature fluctuation is bigger, can cause fused brick cracking. Fused zirconium corundum brick affected by high temperature of volatility in a short period of time will transverse longitudinal crack formation, especially the flame space parts, such as: small furnace brick, entrance self-closed, breast wall hook crib and small front part, these places after the burst, generally at the beginning of the new kiln operation effect is not obvious, but into the kiln operation, in the middle of the link will appear brick turn, exposing plate, parapet walls caused by leaning into the stove. Domestic glass company has several causes such causes tilt across the serious collapse, water production, great economic losses. In western developed countries, with the progress of materials science, roasting kiln technology and the development of the temperature control measures, the glass furnace roasting kiln fire temperature has risen to 1100-1100 ℃, the temperature range of each part of the furnace refractory basic has completed the transformation, the crystal in the stationary phase, when the fire more easily and the cohesion of the temperature of the fire, will not result in a larger fluctuation, so as to prevent the crack of fused brick, for the safe operation of the kiln laid a good foundation. At present, the service life of glass kiln developed countries generally in more than 10 years, the high temperature roasting kiln is one of the important factors. At home, the service life of glass furnace also increased significantly in recent years, have already by 3-4 years before kiln period up to 6 to 8 years. The current domestic new design glass production line plan kiln of age are also in more than a decade, with the refractory quality enhancement, furnace structure, improve the building quality of reasonable operation and use are inseparable, and we can't ignore the quality of baking furnace preheating work. In the process of the development of domestic glass industry, due to the unreasonable leave safe hidden trouble of baking furnace, furnace accident or water case in advance, has drawn glass production enterprise top managers and technical personnel attaches great importance to, but because of various reasons, the domestic glass production enterprises in both new kiln and kiln roasting kiln construction of cold repair choose high temperature after the fire is not much, the reason is nothing but there are two: first, for the sake of short-term economic interests. High temperature had compared with the traditional 850 ℃ over the fire, the fire required for high energy consumption, heating time is longer, such as: capacity of 500 t/d furnace melting 1150 ℃ compared with 850 ℃ over the fire, the fire to use diesel 80-100 tons, up to 1150 ℃ 850 ℃ fire required about 100-120 tons of heavy fuel oil, calculate price difference, 1150 ℃ fire fuel consumption spending 100000 yuan more than 850 ℃ over the fire, but also increase the baking furnace heating period of 3 to 5 days. Yet cost of $100000 compared with the unreasonable low temperature far left in the kiln hidden danger caused by the millions or even tens of millions of overhaul spending; 3-5 days compared with high temperature far extended by 1-2 years age of kiln, our enterprise managers how to choose? Secondly, domestic can reach above 1100 ℃ over the fire baking furnace is hard to find in the professional team. High temperature after the fire need not only have professional technology, need more advanced and perfect equipment support. At present, most of the domestic professional baking furnace equipment level compared with developed countries there is a certain gap, one is the heating temperature control ability is limited, one is the material equipment limited ability to resist high temperature. Such as domestic burner flame tube, generally at above 900 ℃ will turn around, nature also couldn't get on the temperature. So for a long time, domestic joint ventures or wholly owned companies glass has been high invite foreign kiln roasting kiln firing. In recent years, the domestic specialized kiln company have realized the high temperature roasting kiln is glass industry in the future the trend of The Times, efforts to develop in the direction of the dash. Furnace hot work in 2002, qinhuangdao yao hua co., LTD., the first breakthrough in technology and equipment bottlenecks is proposed and implemented in above 1100 ℃ high temperature roasting kiln fire. Previously, my company rely on yao hua enterprise for many years accumulation of technology and talent advantages, for the design of tooling and research unit jointly developed with international leading level of new baking furnace equipment. The device is controlled by industrial control computer baking furnace fan start-stop, real-time monitoring of each measuring point temperature and self-closed and inflation, and draw up the curve. New equipment is especially pay attention to in the company purchases the 16 sets of medium atomizing burner. It adopts the inner and outer jacket and unique cyclone and tangential diversion technology, using the medium atomization, at low temperature and low oil pressure, can ensure that burn more fully, do not smoke and oil utilization ratio, high thermal efficiency. New burner and blower to switch to metal hose connection, in front of the burner flame tube selects the import high quality refractory material welding after the special craft production, resistant to high temperature of 1200 ℃, thus ensuring the above 1100 ℃ over the fire. The roasting kiln equipment automation degree is high, temperature control ability is strong, can be balanced, accurate master control point (temperature curve and plan curve error is less than + / - 3 ℃) to control the furnace from room temperature to 1100 ℃ above, effectively avoid because of the fire when the temperature gradient is too large, causing fused brick cracking, the phenomenon such as wall body tilt, to ensure that the baking furnace work reasonable science, safety, and reliability, improve the service life of the furnace. The device represents the highest level at present domestic baking furnace equipment. I company in 2002, 2003, two years, the use of new baking furnace equipment for qinhuangdao yao hua glass industrial park of 450 t/d float glass production line, the northern group company embossed glass production line, qinhuangdao yao hua co. 500 t/d float glass production line, fuxin hengrui glass co., LTD. 500 t/d float glass production line, jiamusi star glass co., LTD. 360 t/d float glass production line of coal combustion, shenyang yao hua glass co., LTD. 500 t/d float glass production line and tianjin ocean glass co., LTD. 269 t/d lattice method of glass production line companies such as glass furnace with high temperature roasting kiln service, more than 1100 ℃ over the fire, each part of the furnace expansion is reasonable, there was no AZS brick cracking situation, get the consistent good opinion of each enterprise. These two years, the new glass production line construction and the old line cold repair all entered the peak, we suggest that the conditional enterprises, especially large float glass kiln, as far as possible selection of high temperature during ignition roasting kiln fire plan, you know, today is tomorrow you pay kiln of age and quality.