Heavy calcium carbonate 95%

Heavy calcium carbonate, coarse whiting, which is made of natural carbonate minerals such as calcite, marble, limestone and ground. Is a commonly used powdered inorganic filler with high chemical purity, inert, easy chemical reaction, good thermal stability, decomposition, at 400 DEG C not high whiteness, low oil absorption, refractive index, low soft, dry, no crystal water hardness, low wear, non-toxic, tasteless, small value odorless, good dispersion.

Physical and chemical properties

The chemical formula of calcium carbonate is CaCO3, and its crystal structure is mainly three square and three sides.

Crystal calcite and aragonite orthorhombic type, under the normal temperature, calcite is stable, aragonite is quasi stable, mainly calcite.

Under normal pressure, calcite and aragonite is heated to 898 DEG C is heated to 825 DEG C, the decomposition of calcium oxide and carbon dioxide; calcium carbonate and all of the acid react to form water and corresponding calcium salts (such as calcium chloride, CaCl2) and emit carbon dioxide; at room temperature (25 DEG C), calcium carbonate in water the concentration of product of 2.8E-9, the solubility is 0.0014, calcium carbonate aqueous solution pH value of 9 5~10. 2, the air saturated calcium carbonate aqueous solution pH value of 8 0~8. 6. Calcium carbonate is non-toxic, no odor, no irritation, usually white, with a relative density of 2 7~2. 9. Mohs hardness of 3 to 3 calcite, aragonite 5~4. With three groups of rhombohedral calcite aragonite has perfect cleavage, cleavage. The settlement volume of heavy calcium carbonate: 1 9ml/ g 2~1., the specific surface area is about 1m2/g; heavy calcium carbonate because of large particles, smooth surface, small surface area, so the oil absorption value is low, for 100g 48ml/.

Heavy calcium carbonate in air stability. Hardly soluble in water, insoluble in alcohol. In the case of dilute acetic acid, dilute hydrochloric acid, dilute nitric acid bubble occurred, and dissolved. Heated to 898 degrees Celsius to start the decomposition of calcium oxide and carbon dioxide.

Application domain editor

The rubber industry with heavy calcium powder rubber - rubber with heavy calcium carbonate powder: 400, Whiteness: 93%: 96%), calcium carbonate, calcium carbonate is one of the largest used in rubber industry filler. A large number of calcium carbonate filled in rubber, can increase the volume of its products, and save expensive natural rubber, thereby greatly reducing the cost. Calcium carbonate filled rubber, can be higher than that of pure rubber vulcanizate tensile strength, tear strength and abrasion resistance.

The plastics industry with heavy calcium powder plastic - plastic masterbatch, masterbatch with heavy calcium carbonate powder (calcium carbonate) 400, the requirements of high temperature after heating whiteness unchanged, ore structure is a large crystalline calcite, calcium carbonate content: 99%, Whiteness: 95%), calcium carbonate skeleton plays a role in the plastic products. Have a great effect on the stability of plastic product size, but also improve the hardness of products and improve product surface gloss and surface smoothness. The calcium carbonate whiteness in more than 90, can replace expensive white pigment.

The paint industry paint - latex paint with heavy calcium powder with calcium carbonate (calcium carbonate) or 800 mesh 1000 mesh, Whiteness: 95%, calcium carbonate: 96%) calcium carbonate content in the paint industry is large, such as in the thick paint in the amount of 30%.

Water paint water paint industry with heavy calcium powder with heavy calcium carbonate (calcium carbonate) or 800 mesh 1000 mesh, Whiteness: 95%, calcium carbonate: 96%), use of calcium carbonate in the water paint industry more widely, can make the paint not settling, easy dispersion, good gloss and other characteristics, in the water of coating amount is 20-60%.

Papermaking industry with heavy calcium powder paper with heavy calcium carbonate (calcium carbonate): 325, whiteness requirements: 95%, calcium carbonate content: 98% calcium carbonate plays an important role in the papermaking industry. To ensure the strength and whiteness of paper, and the cost is low.

The construction industry (dry mortar, concrete) with dry mortar powder TSP with heavy calcium carbonate (calcium carbonate) 325, Whiteness: 95%, calcium carbonate content: 98%) plays an important role in the concrete of calcium carbonate in the construction industry. Not only can reduce the production cost, but also can increase the toughness and strength of products.

Calcium carbonate ceiling ceiling industry heavy calcium powder (TSP powder): 600, whiteness requirements: 95%, calcium carbonate content: 98.5%) need to use calcium carbonate in the ceiling in the production process, can improve the whiteness and brightness of the product, and fire performance will increase.

The artificial marble industry with heavy calcium powder of artificial marble with calcium carbonate (calcium carbonate): 325, whiteness requirements: 95%, calcium carbonate content: 98.5%, pure no impurities) of calcium carbonate has been widely used in the production of artificial marble.

Drilling with heavy calcium carbonate with calcium carbonate industry floor floor drilling (TSP powder): 400 mesh, white degree requirements: 95%, calcium carbonate content: 98.5%, pure no impurities) calcium carbonate can be used in the drilling industry floor, whiteness and tensile force to increase the product, improve the toughness of products, reduce the production cost of.[1]