When it comes to furnace insulation, there are many choices.
For example, when castable is used to build the furnace, the fire resistance is obviously better than that of other materials, and the chemical properties are stable, wear-resistant, erosion resistant, airflow scouring resistant and long service life. Of course, there are also short plates. The pouring furnace body has a long cycle, large human and material resources, and can only be put into use after drying. It should be noted that the castable furnace body is not suitable for the furnace with frequent startup and shutdown. Because the castable is not resistant to rapid cooling and heat, frequent startup and shutdown will lead to cracking of the castable furnace lining, affect the thermal insulation effect and even the outward movement of the furnace fire, resulting in greater losses.


The furnace of refractory brick is also widely used, with good fire resistance, wear resistance and chemical stability, not easy to be eroded, and long service life. However, the thermal conductivity is too high, the thermal insulation is slightly poor, and the density is large. It is a heavy refractory, which has high requirements for the load-bearing of the furnace steel frame. Like other heavy refractories, it is not resistant to rapid cooling and heating, and the maintenance is slightly troublesome. It needs to be built in a large area after shutdown.
All fiber lining is a popular insulation scheme in recent years. It is a composite structure composed of ceramic fiber module and ceramic fiber blanket. The thermal conductivity of ceramic fiber is lower, which is one third of that of refractory brick; The weight is more than 75% lighter than light refractory brick.
The resulting benefit is that the thermal insulation effect is better than other furnace linings, so as to lock in heat as much as possible, reduce fuel consumption and effectively save costs for enterprises.
In addition, the installation is simple, and the workers can install on site under the guidance of technicians, saving the construction cost.
It can be put into use after installation to shorten the construction period; Since each module is fixed by a separate anchor nail, the maintenance is more convenient. Replace the module that needs to be replaced.
The ceramic fiber module is a lightweight thermal insulation material, which greatly alleviates the bearing pressure of the kiln frame and prolongs the service life of the kiln body. There are 5 temperature grades to choose, and an economic and reasonable scheme can be selected according to the kiln conditions.
Of course, there are also some defects. For example, the structure of ceramic fiber products determines that its surface has poor wind erosion resistance. Although a hard shell can be formed on its surface with the support of curing agent, it is still not applicable in the furnace environment with high wind speed.

For more details or questions, please call the company’s hotline + 0531 85800088 or through the online customer service website, or leave your contact information. We have technicians to solve the problems related to high temperature materials for you at any time.

Shandong redon high temperature materials Co., Ltd. has domestic high-end production equipment and reliable production technology, with an annual output of 1050 ceramic fiber series products, 1260 ceramic fiber series products, 1400 ceramic fiber series products and 1600 polycrystalline series products of more than 10000 tons. There are more than 30 kinds of products in different forms, such as cotton, blanket, felt, board, paper, various textiles, profiled products, modules, folding blocks, castables, spraying and so on, which can meet the heat insulation requirements of different situations in the high temperature field. Welcome to click the online service at the bottom right of the website or submit an online inquiry. We will contact you as soon as possible.