Ramming material manufacturers teach you how to improve crack resistance

The ramming material manufacturer Luoyang Quantong Kiln Industry Co., Ltd. tells you how to improve the crack resistance of explosion-proof refractory castables:

A, adding organic fibers to improve burst resistance

From the relationship between the vapor pressure and temperature of water, it is not difficult to see that when the water is above 100 degrees Celsius, the vapor pressure rises rapidly. When the castable is baked, the water in the castable will be sensitive to gasification due to heat. The main reason for the burst is that the water vapor formed by the sensitive composition cannot be discharged out of the pouring body in time, and the water vapor pressure in the pouring body is too high.

B, adding a co-binder to adjust the hardening time

The fast hardening of the castable is very important for rapid demoulding after construction. By adding a hardening co-binder to ensure that the castable has a satisfactory construction time, it must also be hardened quickly after casting to facilitate timely demoulding. Baking. The hardening time of the castable is also closely related to the bulging and bursting of the castable. If the castable hardens too fast or hardens too slowly, there will be problems of bulging and bursting of the castable.

C, choose high-efficiency water reducer

The bursting of the castable is mainly caused by the fact that the water vapor generated by the heating and vaporization of the water cannot be discharged from the casting body in time, so reducing the amount of water added to the castable is also one of the explosion-proof.

D. Basic emulsion explosion-proof agent is a new type of explosion-proof agent that has only been reported in recent years. Its composition is a multi-nuclear complex formed by ionic polymerization of hydroxide, which can be effectively dissolved in aqueous solution. There are literatures introducing its explosion-proof mechanism The reason is that when the castable is monotonously heated, the dehydration and gelation of the basic emulsion forms a mesh-like micro-crack channel in the matrix, and then increases the air permeability of the castable.

Luoyang Quantong Kiln Industry Co., Ltd. is a comprehensive high-tech company integrating R&D, production, sales and construction services. It is a high-tech enterprise in Henan Province and an IS09001 quality assurance system certification enterprise. We sincerely welcome your inquiries.