New type of internal thermal full flame energy-saving rotary kiln successfully developed

After a six-year unremitting efforts, Li Zewei, the technical director of a kiln company in Foshan City, successfully developed a new type of internal heat-type full-flame energy-saving rotary kiln that is suitable for the production of ceramic raw materials and colored glazes, and has obtained national patent authorization. This new type of kiln can realize the flawless, large-scale and professional production of ceramic color glazes, and is particularly beneficial to improve product quality and energy conservation and environmental protection. It is expected to trigger a kiln revolution in the ceramic porcelain color glaze industry.

It is well known that calcination and drying are indispensable in the production of ceramic-colored glazes. The heating equipment used in the traditional production technology of the ceramics chemical industry is mostly push-plate kiln, shuttle kiln and tunnel kiln. With the trend of energy conservation and emission reduction, the industry has begun to use rotary kiln in the past two years. It is understood that at present Foshan ceramic color glaze industry has built more than 10 rotary kiln, all belong to ordinary rotary kiln. This kind of rotary kiln is almost the same as the rotary kiln commonly used in cement production, but its size and output are much smaller. Although ordinary rotary kiln is more energy-saving than push-plate kiln, shuttle kiln and tunnel kiln, Li Zewei thinks that its energy consumption is still high. For example, a straight cylindrical rotary kiln with a diameter of 1.5m × 14m can use a coal-to-cylinder gas as the fuel, the temperature of the smoke chamber can be as high as 650-800°C, and these waste heat are usually not used and processed, resulting in a great The waste of ordinary rotary kiln has achieved large-scale and non-defective production, but the product quality fluctuates greatly. Because the fuel is in direct contact with the raw materials, and the added pressure of the combustion-supporting air has a severe effect on the firing atmosphere, the synthesis of ceramic pigments may be abnormal. The shape structure of the new internal thermal flame kiln is not different from that of ordinary rotary kiln. Only the internal lining structure has been reformed, so that it not only improves the structural strength and service life, but also achieves the goal of energy saving and atmospheric pressure calcination. . The combustion chamber of a full-scale rotary kiln is actually a regenerator. There are at least two advantages to using full-bore combustion: First, the ceramic color enamel can be protected from impurities in the fuel and the exhaust gas after combustion; second, the calcination process is not affected by the pressure-supporting combustion air, and the atmosphere in which the raw material reacts can be guaranteed. .
Li Zewei, 40 years old, is an ancestor of Sichuan's Anxian County. He is familiar with ceramic raw materials and ceramic chemical production. Years ago, we began to conduct research and trials on the flame kiln and built an experimental kiln with a diameter of 0.8mx2.5m. According to the measurement, when the temperature of the combustion chamber is 900°C, the kiln temperature is only 70-90°C, and the energy-saving effect is very significant. Unfortunately, the experiment kiln was destroyed in the 2008 Sichuan earthquake. Later, he himself was financially constrained because of the surgery. He had to work southwards in Foshan. At present, the kiln companies he works for mainly produce kilns in the heat treatment industry, and they are not involved in ceramics because of their busy business. At present, Mr Li’s greatest wish is to hope that his patented technology, which has been painstakingly endeavored for many years, can be used in ceramic raw materials and color glaze industries to enable the service industry to serve the community.

A senior expert in the ceramic color glaze industry pointed out that the ceramic chemical raw material industry urgently needs a professional kiln company to engage in the research, development, design, and construction of calcining and drying equipment, among which the full-scale flame energy-saving rotary kiln should be A direction of development. At present, there are as many as 1800 ceramic glaze chemical companies in the country, and about 500 directly engaged in the production of color glazes. They are mainly distributed in Foshan and Chaozhou in Guangdong, and in Jiangsu, Shandong, Hunan, and Fujian. □Yanyan energy-saving rotary kiln has a huge market space. It is understood that rotary kiln can be used to produce frit, it can also be used for burning and drying of other chemical raw materials. The construction of a tunnel kiln will cost millions of dollars, and the construction of a rotary kiln will only cost hundreds of thousands or even tens of thousands of yuan. At present, many kiln companies can build ordinary rotary kiln, but due to the unfamiliar with the production process of ceramic glaze, some built rotary kiln has not been put into normal use. Li Zewei, who is familiar with the production of ceramic color glaze, is full of confidence in this type of internal-fired full-fired energy-saving rotary kiln that he invented. He also looks forward to cooperating with a company or owner with financial strength to build China’s first professional ceramic color glaze. Kiln company.