How to solve the shedding of refractory castable

The shedding of refractory castable is a common problem in the construction, which is generally due to the failure to follow the standard operating procedures. Not in accordance with the correct method, process to the construction, then it is very easy to cause damage to the furnace, especially some of the more difficult to construct parts, because of the special situation, in the spraying work is easy to spray uneven, in this case, it is very easy to appear the phenomenon of casting off. It is also because before the construction of refractory castable, the anchoring parts used for fixing are not securely installed, which leads to a large number of anchoring parts falling off from the root during the operation of the boiler, causing the castable to fall off.

Is there an effective solution to the shedding of refractory castable? The answer, of course, is yes. Please listen to the refractory manufacturers for the answer. In the construction, if there is a part of the casting off, do not panic, we can make a solution according to the size of the shedding area. If the shedding area is not large, then we can use tamping material or plastic repair can be. However, if it is a large area of shedding, the shedding part should be knocked first, so that all loose around the refractory castable knocked off, and then re-sprayed.

This is the solution that has been shed, let's talk about how to prevent shedding of pouring.

Anchoring is important because it holds the castable firmly to the surface of the furnace wall. In the selection of anchoring parts, should try to choose the same type of steel and furnace equipment, so as to avoid different expansion and cracking. During welding, Y type anchoring pieces can be replaced by L type for welding, which also improves the fixation adhesion of the anchoring pieces themselves. Suitable refractory castable, such as corundum castable with good thermal shock resistance, should be selected in advance for the parts with severe wear. Because of the long service life of this castable, and thermal shock resistance can fully meet the needs of the use. But one point, no matter what kind of material is chosen, we must pay attention to the construction conditions on the site, otherwise even the most excellent refractory, without a suitable construction environment, the performance will be greatly compromised, unable to achieve the desired satisfactory results. All kinds of furnace finally whether normal operation, all depends on the last process - oven. This is the key step, the need in the construction of strict control of the oven time and temperature control, in order to ensure that the refractory castable can play the best effect.

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