FIELD: chemistry.
SUBSTANCE: invention relates to chemistry and can be used as filler for paper, in adhesives, sealants and plastics, as well as dry diluent in paint. Calcium oxide is slaked with water. Carbonisation is performed with gaseous carbon dioxide obtained from lime milk without stirring, without preliminary cooling in heat exchanger and without any additives. Precipitated calcium carbonate (PCC) is obtained. PCC is sieved, dehydrated, dispersed and/or ground. PCC product is obtained, which contains 85 % or more scalenohedral particles. PCC and PCC product are used to produce paper, paper coating paper product, ink paint plastic adhesive construction, food or pharmaceutical roduct.
EFFECT: invention enables to create voluminous filled paper, which has high whiteness, improved opacity and stiffness.
19 cl, 3 dwg, 2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS FOR OBTAINING PRECIPITATED CALCIUM CARBONATE | 2014 |
|
RU2648923C2 |
| METHOD FOR PREPARING CALCIUM CARBONATE DISCRETE PARTICLES | 1999 |
|
RU2215692C2 |
| METHOD OF OBTAINING PRECIPITATED CALCIUM CARBONATE, PRECIPITATED CALCIUM CARBONATE AND USE THEREOF | 2012 |
|
RU2563010C2 |
| OBTAINING HIGHLY PURE PRECIPITATED CALCIUM CARBONATE | 2011 |
|
RU2602140C2 |
| METHOD OF OBTAINING PRECIPITATED CALCIUM CARBONATE | 2011 |
|
RU2520437C1 |
| DEPOSITED CALCIUM CARBONATE, METHOD OF PRODUCTION THEREOF, PAPER FILLER AND FILLED PAPER | 2004 |
|
RU2344078C2 |
| PRECIPITATED CALCIUM-CARBONATE PIGMENT, ESPECIALLY APPLICABLE AS COATING FOR PAPER DESIGNED FOR INK-JET PRINTING | 2006 |
|
RU2432374C2 |
| PRECIPITATED MAGNESIUM CARBONATE | 2014 |
|
RU2664879C2 |
| PRECIPITATED CALCIUM CARBONATE PRODUCTION | 2015 |
|
RU2660880C2 |
| METHOD OF INCREASING OPACITY OF DEPOSITED CALCIUM CARBONATE | 2016 |
|
RU2688848C1 |
