Micronized calcite is especially used in the production of writing paper, wallpapers and cardboard by adding it 15-30% in proportion to cellulose. Due to its high whiteness, cheapness, and other technical features it brings in the paper, it has entered the paper industry by replacing kaolin, starting from Europe and then spreading all over the world. The paper industry, which produces the acid system in which kaolin is used in the filling, has turned into a method called neutral gluing or alkali system with increasing acceleration. Therefore, yellowing has been prevented for produced papers over time and allowed more calcite fillings than kaolin. This means less cellulose consumption and less fluorescent brightening usage. By this means, calcite contributed to protecting the environment. In the world, half of the raw material used for filling in the paper industry is granulated calcite and PCC (Precipitated Calcium Carbonate). An important part of this is calcite produced for use in filling and 25-30% of it is coated calcite. In Europe, watery granulated calcite, usually 60% below 2 microns, is used for filling purposes in the paper industry with 75% water and 25% solid. Moreover, 88-90% is used for the coating of watery granulated coated calcite, less than 2 microns. In Turkey, Seka and some private companies pay attention to filler calcite of grain size distribution, but dry granulated calcite with less than 2 microns from 42 to 44% is used in the filling, and some paper manufacturers use even calcite below 2 submicron about 36-38%.
The paint industry uses dry granulated calcite with a size of 1, 3, 5, 20, 40 microns. The most demanded product group is calcite of 5 microns. The calcite is added in 25-35% proportion to water-based construction paints used in interior and exterior coating. The calcite used as an extender in the paint provides surface coating and reduces the consumption of titanium dioxide. Demand for affordable paints increased in the paint sector due to the price increase in chemicals. Thus, the consumption of calcite in the paint industry has increased by 50% in the last five years.
The calcite is used both as granulated, natural and as coated in the production of many plastic products plastic furniture, pipe, automotive, etc. The coating is usually made with stearic acid and sometimes with calcium stearate. Polypropylene (PP), Polyamide (PA), Thermoplastic (TPES) and PVC resins are mainly plastics in which calcite is used as filler. In the plastics industry, the use of similar filling materials and, especially that of calcite, has increased every year. The calcite is used as filler in the plastic industry for many reasons such as color, purity, and cheapness.
Production of coating, putty, filler, plaster in the construction sector. In plastering, putty, and similar areas, that are newly emerging in Turkey, the use of white fillers is very common in Europe and the United States. In the construction sector, when the white-colored, cement-based plaster and pastes are mixed with the powder polymers and applied to the wall, rough plaster, fine plaster, putty, and even paint process are dissolved in a pen. It is mixed with calcite gypsum, cement, powder polymer binders in various sizes and started to be used extensively in the construction area. The construction sector consumes the highest amount of calcite in tonnage. The use and consumption of calcite in the gypsum industry have increased enormously in recent years.
The calcite filler mixed with polymers has been used extensively in the construction and automotive industries. The development in the adhesive sector has accelerated and the amount of consumption has been much higher than expected.
Micronized calcite is used as an additive in foodstuffs such as biscuits, bread, bubble gum, chocolate, and so on. Due to its purity and color, it is used as an indirect source of calcium making the product cheaper…
The calcite (CaCO3) is added to the recipes after being granulated in 40-100 microns in the ceramic industry. The use of calcite in the ceramic industry has also increased rapidly in the last five years. Although it can be mentioned within the carpet base and linoleum plastics sector, it is also mentioned because it is used in 40-60 micron sizes. It is increasingly used.