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Calcium carbonate

Calcium carbonate

Calcium carbonate with the chemical formula CaCO₃ is a white powder that has many uses as an additive in various industries. Calcium carbonate has a wide range of applications and today it is one of the consumables and required by industries such as paint, paper, rubber, cosmetics, paper, plastic, etc. Iran has large and high-quality calcium carbonate sources and mines, and it is also one of the exporters of the powder of this material to neighboring countries. According to the type of application, the calcium carbonate powder is crushed up to 2500 mesh. Some of the uses of calcium carbonate are mentioned below.

1- Dyeing:

One of the uses of calcium carbonate is in the dye industry. This material can replace a part of the TiO₂ requirement as a colorant in emulsion paints (blue base).

Calcium carbonate is widely used in the paint industry due to its reasonable price, optical and mechanical properties. Excellent dispersibility in all colors, increase in brightness, increase in resistance to weather and wear factors, reduction in paint production costs, etc. are some of the advantages of using calcium carbonate in the paint industry.

2- Papermaking:

Calcium carbonate is used as a coating material in the paper industry and is considered a type of filler. Coating materials are used in papermaking to increase the quality of printing on paper. Among the advantages of using calcium carbonate in papermaking, we can mention things such as reducing

paper production costs, increasing the strength of produced paper, reducing damage to the environment due to less wood consumption, increasing paper resistance, better absorption of paint and ink, etc.

3- Plasticization:

The plastic industry is an important consumer of calcium carbonate, which is used to reduce the price of the final product of plastic production. Calcium carbonate is usually classified as a filler that improves physical properties such as heat resistance, dimensional stability, hardness and strength.

. Calcium carbonate is used in the production of various plastic products such as pipes, cables, disposable containers, etc.One of the important fields of calcium carbonate consumption is in rubber making. Today, rubber is an inseparable part of human life due to its wide use in the production of car tires, door and window seals, etc. In the rubber industry, calcium carbonate is used in order to create a better surface texture of produced rubber, to create a uniform and homogeneous composition of raw materials, etc. Also, the use of calcium carbonate in rubber production reduces the cost of production and increases the life of products.

4- Pharmaceuticals:

In this industry, very high quality calcium carbonate is used and it must comply with the valid standards of this industry. This substance is used to prepare antacid syrups and tablets, in the manufacture of antibiotics for neutralization and as a filter aid, in soluble tablets as a dissolving and strengthening agent, and in calcium tablets as a calcium supply agent.

5- Agriculture:

One of the most important applications of calcium carbonate is in agriculture and poultry breeding.Calcium except It is the main structure of the animal body. Calcium ion is also needed for blood clotting and other things in the body.This mineral is added to livestock and poultry feed in the form of lumps or powder.In the discussion of agriculture, it is a substance that has a significant effect on soil fertility and adjusts the pH of the soil after it is added.

6- Construction

Calcium carbonate (CaCO₃) is a major ingredient in the construction industry, mainly used in the production of cement. This material is usually used for these purposes in a lime state. In addition to cement structures, CaCO₃ is highly considered in the foundation of road construction projects. This material is used to help improve the texture of the soil and allows the projects of bridge construction, house construction and strong buildings to be completed well.

Lime reacts with cement-making additives, turning into clay cement and creating harder compounds. In addition, the strength and hardness of materials produced with CaCO3 allows large and heavy construction vehicles to easily pass through construction sites. With the introduction of this material to the cement industry, the main form used in these processes is limestone. Cement is basically composed of calcium silicates and calcium sulfate.

7- Drilling:

Oil and gas drilling includes many complex operations in which calcium carbonate and various other minerals play an important role. Normally, natural minerals (barite and calcium carbonate) are used in oil and gas drilling as additives for fluids. They are used in the drilling and cementing stage. Application of calcium carbonate in drilling is mainly used as a plutonium agent. A mixture of predetermined particle sizes is added to the drilling fluid. These minerals help to control the amount of infiltration fluid in the formation of the rock being drilled. This is important to avoid damaging the rock, which in turn can limit oil and gas production. In addition, the acid solubility of calcium carbonate means that potentially harmful solids can be acidified and removed from wells to maximize production. Excavated calcium carbonate can also be used as a weighting agent. Calcium carbonate is also used to regulate drilling fluid. This substance has an alkaline effect when dissolved in liquids such as water and reduces the acidity of the drilling fluid.

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