What is light calcium carbonate?

Question 1: What is the function of light calcium carbonate? The function of light calcium carbonate is to detect and determine halogen in the reaction of organic compounds, decompose silicate together with ammonium chloride, prepare calcium chloride solution to standardize soap solution, analyze water and detect phosphorus. Shenlong Calcium Light Calcium Carbonate can also be used to manufacture raw materials of optical Nd: glass.

Question 2: What is light calcium carbonate and is it edible? Light calcium carbonate is also called precipitated calcium carbonate (PCC). Light calcium carbonate is made by chemical processing. Because its sedimentation volume (2.4-2.8mL/g) is larger than that of heavy calcium carbonate produced by mechanical method (1.1-1.9 ml/g), it is called light calcium carbonate.

Used in the following industries:

Rubber industry, plastic industry, coating industry, water-based coating industry

Question 3: What is the difference between heavy calcium carbonate and light calcium carbonate? There are two main types of calcium carbonate: heavy calcium carbonate and light calcium carbonate.

The abbreviation of heavy calcium is made by grinding ore directly by mechanical method. Heavy calcium carbonate is called heavy calcium carbonate because its sedimentation volume is smaller than that of light calcium carbonate.

Light calcium carbonate, referred to as precipitated calcium carbonate for short, is prepared by calcining limestone and other raw materials to generate lime (mainly calcium oxide) and carbon dioxide, adding water to digest the lime to generate lime milk (mainly calcium hydroxide), introducing carbon dioxide to carbonize the lime milk to generate calcium carbonate precipitate, and finally dehydrating, drying and pulverizing. Because the sedimentation volume of light calcium carbonate (2.4-2.8mL/g) is larger than that of heavy calcium carbonate (1.1-1.4 ml/g), it is called light calcium carbonate.

Activated (also called modified) calcium carbonate is prepared by adding active agents (such as fatty acids). ) is attached to the surface of calcium carbonate during its production.

The biggest difference between activated calcium carbonate and ordinary light and heavy calcium carbonate is:

Activated calcium carbonate is lipophilic and hydrophobic.

Ordinary calcium carbonate is hydrophilic and oleophobic.

So its use and usage are very different.

Question 4: What is the difference between light calcium carbonate and heavy calcium carbonate? 1. Heavy calcium carbonate, referred to as heavy calcium carbonate for short, is a white powder processed from high-quality calcite. Its main component is CaCO3, which is insoluble in water and ethanol. It has the characteristics of high whiteness, good purity, soft color tone and stable chemical composition, and is the most widely used inorganic filler in industry. Heavy calcium carbonate is usually used as filler, and also widely used in artificial floor tiles, rubber, plastics, papermaking, coatings, paints, inks, cables, building supplies, food, medicine, textiles, feed, toothpaste and other daily chemical industries. As a filler, it can increase the product volume and reduce the production cost. Used in rubber, it can increase the volume of rubber, improve the processability of rubber, play a semi-reinforcing or reinforcing role and adjust the hardness of rubber. Used in chemical building materials, it has the characteristics of heat resistance, chemical corrosion resistance, cold resistance, sound insulation, earthquake resistance and easy processing, and can be used as doors, ceilings, wallboard, water supply and drainage, stair handrails, floors, wires and so on. In oily coatings, heavy calcium can play a skeleton role as filler. In plastics, it can increase the volume of plastics, reduce the product cost, improve the dimensional stability, hardness and rigidity of plastics, improve the processability of plastics, improve the heat resistance of plastics and improve the astigmatism of plastics. As a slurry, the characteristics of high whiteness, good hydrophilicity and high impact strength of heavy calcium carbonate are fully utilized. Heavy calcium carbonate has the characteristics of heat resistance, chemical corrosion resistance, cold resistance, sound insulation, earthquake resistance and easy processing. Used in chemical building materials, building ceramics, floor tiles, doors, ceilings, wall wrenches, water supply and drainage, stair handrails, floors and wires. It can also be used in papermaking, coating, paint, PVC profile, artificial leather, PVC gusset plate, medicine, food, cosmetics, ink and so on. 2. Light calcium carbonate is made of limestone, which is mainly used as filler in rubber, plastic, paper, paint, ink and other industries. It can also be used in daily chemical products such as tooth powder, toothpaste and cosmetics, and can also be used in organic synthesis, metallurgy, glass and asbestos production. Heavy calcium is washed in natural ore and ground to whiteness and fineness for coating. Light calcium carbonate is obtained by dissolving caco3 in water after calcination and post-treatment. Thirdly, 1 and heavy calcium carbonate are relatively safe in coating application, and their dry hiding power is not high. Not as white as light calcium carbonate, but cheap. 2. If light calcium carbonate is used carelessly, it is easy to cause serious post-thickening, and the most serious thing is coating caking. The oil absorption is much larger than that of specific calcium, and the alkalinity is also relatively high. 3. The dry hiding power of light calcium is much higher than that of special calcium, and it is also whiter than special calcium.

Question 5: What is the difference between calcium bicarbonate and light calcium carbonate? In terms of elemental composition, calcium carbonate contains no hydrogen, while calcium bicarbonate contains hydrogen. Solubility: calcium carbonate is insoluble in water, and calcium bicarbonate is soluble in water. Stability: The decomposition temperature of calcium carbonate is higher than that of calcium bicarbonate. PH: calcium carbonate solution >: calcium bicarbonate solution.

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Question 6: What role does food light calcium carbonate play in food? Light calcium carbonate is also called precipitated calcium carbonate (PCC). Light calcium carbonate is made by chemical processing. Because its sedimentation volume (2.4-2.8mL/g) is larger than that of heavy calcium carbonate produced by mechanical method (1.1-1.9 ml/g), it is called light calcium carbonate.

It is widely used in modern life to supplement calcium nutrition and health food industry, and is a high-quality nutritional strengthening additive for dairy products, meat products and flour products, milk powder, milk tablets, beverages, beverages and other industries. Can be used for producing milk powder, beverages, cakes, milk tablets and the like. So as to increase calcium nutrition, make it fluffy and taste better. In the process of preparing penicillin, streptomycin and oxytetracycline, a large amount of calcium carbonate is needed. It is used as an additive in food to ensure the necessary calcium intake of human body, such as chewing gum, chocolate, Wahaha, shaped calcium, jelly Hijiro and other beverages as a fortifier to meet the calcium demand of human body. Food-grade caco3 has a high content and few impurities, and the indexes such as lead, arsenic, mercury and iron are particularly low.