Calcium Carbonate-Limestone-Marble-(CaCO3): This element is commonly found in rocks all around the world. It is particularly useful in calcium supplements or as an antacid.
The main use of calcium carbonate is in the construction, either as a building material or perhaps limestone aggregate for roadbuilding to as an ingredient of cement to as the starting material for the preparation of builder’s lime by burning in a kiln.
However, due to weathering mostly caused by acid rain, calcium carbonate (in limestone form) is no longer used for building purposes on its have, as well as just as a raw/primary substance for building materials. Calcium carbonate is also used in the purification of iron from iron ore in a blast furnace.
In the oil industry, calcium carbonate is added to drilling fluids as a formation-bridging and filtercake-sealing agent; it is also a weighting material which increases the density of drilling fluids to control the downhole pressure. Calcium carbonate is added to swimming pools, as a pH corrector for keeping alkalinity as well as offsetting the acidic properties of the disinfectant agent.
Calcium carbonate has traditionally been a major component of blackboard chalk. However, modern manufactured chalk is largely gypsum, hydrated calcium sulfate CaSO4·2H2O. Calcium carbonate is a main source for growing Seacrete, or Biorock. Precipitated calcium carbonate (PCC), pre-dispersed in slurry form, is a common filler material for latex gloves with the aim of achieving maximum saving in information as well as production costs.
Fine ground calcium carbonate (GCC) is an essential ingredient in the microporous film used in babies’ diapers and a few building movies as the pores are nucleated around the calcium carbonate particles during the manufacture of the film by biaxial stretching. GCC or PCC is utilized as a filler in paper due to the fact they are cheaper than wood fiber. Printing as well as writing paper can contain 10-20% calcium carbonate. In North America, calcium carbonate has started to replace kaolin in the production of glossy paper.
Europe has been practicing this as alkaline papermaking to acid-free papermaking for some years. PCC has a very fine as well as controlled particle size, on the order of 2 micrometres in diameter, useful in coatings for paper.
