Why is the preparation of ramming materials in unshaped refractory inseparable from aluminum dihydrogen phosphate binder?

1. Ramming materials are granular and powdery materials made of refractory materials, which often contain appropriate aluminum dihydrogen phosphate binder, and are made by reasonable grading and mixing. They are loose.

2. Ramming materials are similar to dry castable, but some do not have self-hardening binder. Usually, the construction needs to be done by strong tamping.

3. The fire resistance of ramming materials and the ability to resist erosion by molten materials are all inseparable from the high temperature resistance of aluminum dihydrogen phosphate.

4. Compared with castable and plastic refractory, it has higher stability and corrosion resistance at high temperature.

5. The critical particle size of ramming material is generally 8m, sometimes 10mm, the dosage of granular material is 60% 6 ~ 70%, the dosage of refractory powder is 30% ~ 40%, and the dosage of aluminum dihydrogen phosphate binder or water is 6% ~ 10%. When clay binder is used, the dosage is 5% ~ 10%, which is generally changed as appropriate according to the use location and construction requirements