Water glass expanded perlite products processing technology The quality requirements for raw materials used in the production of cullet expanded perlite products are as follows.
Expanded perlite: The bulk density is â‰¤120kg/m3. Water glass: modulus 2.4 to 3, density 1.38 to 1.42 g/m3, concentration 38 to 42 Â° BÃ© (pome). Red mud: aluminum industrial waste, chemical composition SiO2>22%, Al2O3<6%, Fe2O3>8%, CaO<48%, H2O<3%. Typical formulations for the production of fire-resistant glass expanded perlite products are shown in the table below. Fireproof water glass expanded perlite products typical formula
| material || Compression ratio /% || Mass ratio /% || Product quality index 1 || Remarks |
| Expanded perlite || 1.8 || 43.6 || Dry bulk density 240ï½ž300kg/m 3 ; pressure 0.6~1.7MPa; normal temperature thermal conductivity 0.047ï½ž0.08W/(mÂ·K); high temperature thermal conductivity 0.071ï½ž0.115W/(mÂ·K) || The mass ratio of cement to expanded perlite is (1 ~ 1.3): (0.4 ~ 1); the amount of coagulant (sodium fluorosilicate) is 10% ~ 14% of the amount of water glass |
| Water glass || 1.8 || 54.6 |
| Red mud || 1.8 |
1 The maximum operating temperature is 600 to 650 Â°C. The production process is as follows:
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