Acid-resistant refractory castables are used in more and more anti-corrosion projects, and kiln and chimney linings are commonly used as acid-resistant castables as a solution. According to the performance of different acid-resistant castables, there should be specific construction requirements. Today we talk about the pre-construction preparation of the popular popular acid-resistant refractory castables.
1. Acid-resistant castables with a thickness of 10-20 mm. The construction is divided into grids. The spacing of the joints is 2-3 meters. The width of the joints is 15-20 mm. The seams are filled with mud.
2, acid-resistant castables can also lining granite blocks, the joint layer and seam is generally 10-15 mm.
3. The construction requirements of acid-resistant castables are the same as those of KPI cement.
4, acid-resistant castables can be used in chemical, light industry, smelting, pickling, petroleum, pesticides, food, electroplating, point solutions and other industrial sectors of the reactor, storage tanks, towers, electrolysis tanks, trenches, floors, fermentation tanks, etc. The whole, cast or lining, can be used as structural anti-corrosion equipment after adding steel bars.
5. The construction of carbon steel equipment during the casting of carbon steel equipment indicates that sandblasting and rust removal should be carried out. When casting inside cement concrete equipment, the oil traces and dust on the surface of the equipment should be cleaned up.
6. The stencil structure for casting must be tight, accurate in size, and have sufficient rigidity and height of 50 cm.
7. The surface of the template should be oiled before construction, and then the plastic film should be lining the surface of the template, and the joint part should be extended by 5-10 cm.
Acid-resistant refractory castable
8. Stirred containers and tools must be clean and dry.
9. The temperature of the construction site must be above 15 °C. Rainproof sheds should be built during the rainy season.
7. Mix the mixture of Ank KPI concrete and potassium silicate to make it fully stirred.
8. Inject the stirred material into the template and perform manual agitation or mechanical vibration.
9, each feeding depth of 30 cm is appropriate.
10. When the ambient temperature is higher than 35 °C, the acid-resistant castable can be demolished in 7 days, and the impact and local ultra-high temperature welding are strictly prevented after demoulding.
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