加水用耐火泥和加磷酸用耐火泥的区别 The difference between fire mud for water and fire mud for phosphoric acid
The difference between fire mud for water and fire mud for phosphoric acid
Fire mud is a connecting material used for fire-resistant brick masonry. Fire mud requires strong bonding. At present, it is widely used with water.
The characteristics of refractory mud with water is low cost, convenient to use during construction, the refractory powder and binding agent stir together directly add water about 15-20% drinking water modulation can be used.There are two kinds of phosphoic acid-bound refractory mud, one is added to dihydrogen aluminum phosphate, the other is diluted with phosphate after adding a certain proportion of stirring for use.
Under normal circumstances, the material of refractory mud and the material of refractory brick are the same, including clay, high aluminum, and composite material, magnesium, silicon and so on.The main requirements are meticulous material, strong bonding nature and reasonable bonding time.However, the refractory mud made with water has a disadvantage. The strength of the cold bond is lower than that of phosphoracid binding, if the brick seam is not full during construction.It is possible that when the temperature is rising.
And the phosphoric acid-bound fire mud, the strength will increase with the increase of temperature, the bond is very strong.High strength and even can not be removed with a pick, phosphoric acid modulation of the fire mud plasticity is very strong, adhesion in the same material on the refractory brick unity is very strong.There will be no falling bricks or drawing lots.
However, when the fire mud is made with phosphoic acid, attention must be paid to the fire mud can not be thickened or hardened, and do the test work before production, so that the fluidity and bonding of phosphoric acid binding meet the actual use requirements of the construction site, and the fire mud after adding phosphoric acid should have enough fluidity.