| 摘要 |
<p num="1"><br/><br/><br/><br/>A method for the hydrothermal preparation of calcium silicate hydrates. Multi-<br/>phase calcium silicate hydrates, <br/>having unique physical and chemical properties, are prepared by hydrothermal <br/>reaction of specified ratios of CaO and SiO2, normally <br/>starting from slurries of slaked lime and from fluxed calcined diatomaceous <br/>earth, each of which is at about the atmospheric boiling <br/>point before being mixed and charged to a reactor, and pressurized. The <br/>hydrothermal reaction is carried out while maintaining the <br/>initial dilution for a preselected reaction time at a preselected reaction <br/>temperature. The calcium silicate hydrates produced have <br/>high water absorption and light scattering power, and have optical and <br/>physical properties making them highly desirable as a filler <br/>substitute in papermaking.<br/>
|
