Because there are so many types of waste, in some urban landfills, it is not possible to completely classify the waste, resulting in different attributes contained in the waste. To make the waste incinerator maintain good performance under long-term high temperature, it is necessary to consider the different parts of the furnace from multiple levels The selection of refractory materials. So, what are the basis for the selection of refractory materials? Different waste incinerators have different operating conditions, different operating temperatures, and different refractory materials required. Therefore, the selection should be based on its work Choose refractory materials with different properties for the environment and use temperature.
1.Refractory materials are selected according to the working environment. First, the input port of the garbage incinerator must be.At the same time, the temperature of the input port often changes, and there is also the wear of the input back and forth, so the refractory material must have abrasion resistance and for thermal shock resistance, it is also possible to use clay bricks for this part, of course, high alumina bricks can also be used.
2.In the drying room and combustion chamber of the garbage incinerator, the garbage and the furnace lining are in direct contact at high temperatures. On the one hand, the slag will adhere to the furnace lining.
On the other hand, impurities will also invade the furnace lining, and the input of waste will inevitably cause temperature changes. Therefore, the selection of refractory materials must be resistant abrasion, corrosion resistance, difficult to adhere, but also alkali resistance, oxidation resistance, high alumina bricks, silicon carbide bricks, and irregular parts can be cast with high alumina materials, silicon carbide castables and plastics.
3.Choose refractory materials according to the use temperature, different waste incinerators, different use parts, and different use temperatures: the top and side of the combustion chamber
The temperature of the wall and burner is 1000-1200, and high-alumina bricks with full clinker refractoriness can be selected, or high-aluminum plastics can be selected.
4.There is also a part on the side of the grate whose operating temperature is 1000-1100, silicon carbide bricks or high alumina bricks can be used, and wear-resistant castables are used for irregular parts.
In short, in the selection of refractory materials for small-scale waste incinerators, it is necessary to consider not only practicality but also environmental protection.Of course, it is reasonable, cost-saving, and efficient and long service life is the best choice.
Zhengzhou Rongsheng Refractory Co., Ltd. has built a factory for nearly 20 years and has been committed to the research and development and production of refractory materials. Customers are welcome to visit and inspect at any time!
