Products Description
The mechanochemical solid phase method was used to extract silicon magnesium from serpentine. The effects of phase reaction time, calcination temperature, material ratio and activation time on the magnesium leaching rate were investigated. Crude magnesium sulfate solution and SiO2 powder were obtained, and the samples were characterized by XRD, TG-DTA, SEM, BET and other analytical detection methods. The results show that under the conditions of solid phase reaction for 60 minutes, calcination temperature of 490℃, serpentine to activator mass ratio of 1:4, and ball milling activation for 10 minutes, the magnesium leaching rate can reach 84%. The obtained SiO2 powder has a flaky structure with a large number of pores on the surface. The average particle size is about 130nm, and the maximum specific surface area can reach 256.37m2/g.
Products parameters
| Item | Unit | Ca30Si60 | Ca28Si55 |
| Si | (min)(%) | 60 | 55 |
| Ca | (min)(%) | 30 | 28 |
| C | (max)(%) | 1 | 1 |
| S | (max)(%) | 0.05 | 0.05 |
| Al | (max)(%) | 2.4 | 2.4 |
| P | (max)(%) | 0.04 | 0.04 |
| Size | 10-30mm 90%min,10-50mm90%mm,10-100mm or required | ||
Products cooperation picture
1.Silicon magnesium can be used to make inorganic silicon magnesium exterior wall insulation composite panels with one-time molding mechanism, including insulation composite panel face layer made of magnesium chloride, magnesium oxide, silicon dioxide, glass fiber cloth, bamboo mat, magnesia filler, and modifier, intermediate insulation layer, and insulation composite panel bottom plate layer made of magnesium chloride, magnesium oxide, silicon dioxide, glass fiber cloth, magnesia filler, and modifier, insulation composite panel face layer, intermediate insulation layer, and insulation composite panel bottom plate layer, which are roll-formed in one time, changing the traditional manual on-site operation, realizing mechanized factory production with inorganic silicon magnesium cement materials, saving labor costs and time, and greatly improving the quality of the project and the operability of quality acceptance; the weight is one-half to one-third of the traditional process exterior wall insulation materials; the impact strength is more than twice that of ordinary composite panels; the frost resistance is 40 times without any change, which exceeds the silicate cement board; good toughness, strong wind resistance, is the best product of the current exterior wall insulation composite panel.
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