| abstract |
The invention concerns a method for obtaining precipitated calcium carbonate particles, of nanometric scale structure by carbonation of lime slurry in the presence of a crystallization controlling agent selected among the following: polyaspartic acid, sodium dioctylsulphosuccinate, polyacrylic acid whereof the molecular weight ranges between 500 and 15000 and citric acid. When the crystallization controlling agent is citric acid, its concentration in the lime slurry ranges between 5 and 15 %. |