Calcium carbonate

Calcium carbonate (CaCO₃) is an inorganic compound commonly known as greystone, limestone, powdered stone, marble, etc. Calcium carbonate is neutral, insoluble in water, soluble in hydrochloric acid. It is one of the common substances on earth, which exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks, and is also the main component of animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry.

The main purpose

1. Light calcium carbonate can be used as leavening agent, flour treatment agent, anti-forming agent, acidity regulator, nutrient fortifier, curing agent, etc. Chinese regulations can be used for all kinds of food and gum gum bases that need to add puffers, according to good manufacturing practice. Can also be used for flour amendment, the maximum use of 0.03%; Milk powder 7.5 ~ 18g/kg; Soy milk powder, soy powder 4-20g /kg; Soft drinks 0.4 ~ 3.4g/kg; Lotus root powder 6-8g /kg; Ready-to-eat breakfast cereal products 2 ~ 7g/kg. FDA (184.1192,2000) does not make restrictive provisions, according to GMP. When THIS PRODUCT IS USED AS LEAVENING AGENT, IT IS OFTEN USED IN CONJUNCTION WITH OTHER VARIETIES. When mixed with sodium bicarbonate and alum, the leavening agent will release carbon dioxide slowly when heated, so that the food will produce uniform and exquisite leavening body, which can improve the quality of cakes, bread and biscuits. Still have the action of agglutination calcium in addition, calcium carbonate particle is smaller more easy to absorb. In Japan, light calcium carbonate is used as a leavening agent in 1% of food products.

2. Used as feed nutrient fortifier.

3. Calcium carbonate whisker is one of the earliest and largest fillers used in rubber industry and plastic industry. In the rubber industry, it is widely used in rubber hose, rubber plate, rubber cloth, rubber shoes and medical products, and is a good filler to reduce the cost of products. In the plastic industry, mainly used for soft polyvinyl chloride complex, plastic sol and glass fiber reinforced polyester complex and other aspects, such as wire skin, artificial leather and other pressing out calending products, the general dosage of about 20. In calcium plastic materials also have a large number of applications, such as hard PVC pipe, plate and so on. In addition, this product is also widely used in papermaking, coating, ink industry and daily chemical products.

4. Compared with the general granular calcium carbonate, the calcium carbonate whisker showed significant strengthening and toughening. Calcium carbonate whisker can be used to strengthen plastics and rubber. Such as used as polyamide, polycarbonate, thermoplastic polyester, ABS, PP and other resin reinforcement modifier, while reducing the cost, but also can improve the bending strength of the product, dimensional stability, thermal stability. In the paper industry as a high-grade paper filler, this paper can be used as non-combustible paper for interior decoration and other aspects. Calcium carbonate whisker is non-toxic and is an ideal substitute for asbestos. It can be used as friction material instead of asbestos to make friction materials such as car brake pads.

5. It is the filling material of rubber, which can make rubber bright color, large elongation, high tensile strength and good wear resistance. Also used as artificial leather, wire, PVC, coating, ink and paper industry filler. When used in the production of microporous rubber, it can make its foaming uniform.

6. Used as an analytical reagent, e.g. as a reference reagent. Emission spectrum analysis of sample flux, volatile additives. Also used as silicon single crystal chip glue, thick film capacitor material, optical glass and pharmaceutical industry raw materials.

7. Used as a white filler for plastic, paper, rubber, paint, ink, etc., it is one of the most widely used filler. Its price is low, the source is wide, the relative density is small, besides has the increment function, but also can improve the processing performance and the product performance. In adhesive manufacturing, can be used as epoxy glue, nylon sealant, chloroprene sealant and other filler. In some soft polyvinyl chloride, there is a heat stabilization effect, can reduce the amount of heat stabilizer. It can be used as viscosity regulator in polyvinyl chloride paste. Used for wire foreskin, artificial leather and so on can improve the tonal stability of products. In the daily chemical industry used for the manufacture of toothpaste, dental powder and other raw materials. It is used in medicine as an acid preparation for gastric and duodenal ulcer and as an antidote for acidosis. In agriculture, it is used as feed additive and antibacterial agent for dairy cattle. In industrial waste gas treatment, it is used to remove SO2 from sulfur - containing waste gas. It is used as neutralizer and flocculant for industrial wastewater in water treatment. It is used as anti-sticking agent in the production of oil felt. It is used to eliminate sour taste in wine making, and is also used as filler for making matches, pencils, crayons, insulation materials, welding rods, etc.

8. Used in the manufacture of powder, powder, gouache, rouge and other raw materials, used as essence mixing agent in the manufacture of powder cosmetics, but also mainly used in toothpaste as friction agent, is a hard abrasive for toothpaste.