Calcium carbonate is a chemical compound with the formula CaCO₃.The thermodynamically stable form of CaCO₃ under normal conditions is hexagonal β-CaCO₃.Calcite, aragonite and vaterite are pure calcium carbonate minerals. Industrially important source rocks which are predominantly calcium carbonate include limestone, chalk, marble and travertine.
Physical Property
| Typical aspect ratio | 3 |
| Specific gravity(g/cm3) | 2.7 |
| Refractive index | 1.6 |
| PH | 8-9 |
| Mohs hardness | 3-4 |
Specification
100mesh, 200mesh, 325mesh, 400mesh, 600mesh, 800mesh, 1250mesh, 2500mesh, 4000mesh.
Application
| Application field | Specification | Whiteness | Function |
| Rubber industry | 400mesh | 93 | One of the largest filler in rubber Lower the cost Enhance tensile strength and abrasion performance |
| Plastic industry | 400mesh | 95 | Improve size stability Improve production rigidity Make soother s-urface |
| Water-based paint | 800mesh, 1000mesh, 1250mesh | 95 | Additive amount is up to 20-60% Make product nonsettleable Make better decentrality Make fine gloss |
| Paper-making industry | 325mesh | 95 | Enhance strength Make product brighter Lower cost |
| Construction industry | 325mesh | 95 | Increases tenacity Enhance strength Lower cost |
| Artificial marble | 325mesh | 90 | Increases tenacity Make product lighter Lower cost |
| Oil-well drilling | 325mesh | / | Added to drilling fluids as a formation-bridging and filter cake-se-aling agent As weighting material to creases the density of drilling fluids |