HOMEProducts
Lab Tour
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
  • Site navigation
Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
  • Finished navigation
Heavy Calcium Carbonate (Ground Calcium Carbonate, GCC) Heavy CaCO3

Raw Materials

Natural big Whitehead

Manufactured Process Summary

The natural dolomite is mechanically crushed to manufacture calcium carbonate of different fineness. This category of calcium carbonate is called heavy calcium carbonate or ground calcium carbonate, whose quality is determined by the quality and fineness of the natural dolomite.

Product Introduction

Calcium carbonate is an important inorganic compound, which is the most commonly used filler in manufacturing and processing industries. In general, calcium carbonate is widely used in rubber, plastics, papermaking, ink, paints, building materials, cropper, fruit farming, food products, medicine, etc. The manufactured process of calcium carbonate is universally generalized into two categories, and the properties of the two categories show slight variations. One is light calcium carbonate, which is achieved by chemical synthesis. The other is heavy calcium carbonate, which is achieved by physical pulverization. The major difference between the light and heavy calcium carbonates is the variations of the pH value, the fineness, and the particle shape. The light calcium carbonate is mainly spindle shaped, and the heavy calcium carbonate is mainly irregularly shaped. The different of the finesses and shape cause the variation of the bulk density (i.e. false specific gravity). There are currently two industrial methods used to make heavy calcium carbonate: One is the dry method, and the other is the wet method. The calcium carbonate made by the dry method is mostly used in the rubber, plastic, and painting industries, and the one made by the wet method is commonly used by the papermaking industry. We adopt the dry method to produce the heavy calcium carbonate. Among the various calcium carbonates, users could select the most suitable one based on applied conditions or individual purpose to achieve the expected effect.

Product Specifications

Property

CS-2200

CS-2000

CS-1800

CS-1600

CS-1400

CS-1200

SCP-1001

Mean Particle Size  
(µm)

1.25

1.65

2.1

2.6

3.4

4.8

13

Surface Area
(cm2/g)

21200

19400

17400

15600

13800

12000

5500

Bulk density   
(g/cm3)

0.72

0.80

0.86

0.92

0.98

1.08

1.30

True specific gravity   (g/cm3)

2.5~2.7

2.5~2.7

2.5~2.7

2.5~2.7

2.5~2.7

2.5~2.7

2.5~2.7

Whiteness
(%GE)

95

95

95

95

95

95

90

Particle all passing point
 (µm)

18

20

24

34

46

60

75

Max. residue on 325 mesh

0.05%

0.05%

0.1%

0.2%

0.5%

1%

4%

 

Oil absorption 
 (ml/100g)

33

30

27

24

22

20

14

Water absorption  (c.c/100g)

35

32

30

27

24

22

17

Assay of CaCO3

97%

97%

97%

97%

97%

97%

95%

Moisture (max.)

0.5%

0.5%

0.5%

0.5%

0.5%

0.5%

0.5%

Insoluble in HCl (max.)

2.0%

2.0%

2.0%

2.0%

2.0%

2.0%

2.0%

 SiO2 (max.)

1.2%

1.2%

1.2%

1.2%

1.2%

1.2%

1.2%

MgO (max.)

0.8%

0.8%

0.8%

0.8%

0.8%

0.8%

0.8%

Fe2O3 (max.)

0.3%

0.3%

0.3%

0.3%

0.3%

0.3%

0.3%

Al2O3 (max.)

0.3%

0.3%

0.3%

0.3%

0.3%

0.3%

0.3%

Loss on ignition

43±2%

43±2%

43±2%

43±2%

43±2%

43±2%

43±2%

 pH value

8.5±1

8.5±1

8.5±1

8.5±1

8.5±1

8.5±1

8.5±1

(The above table is provided for reference only )

Scanning Electron Microscope(SEM)

Product characteristics

  • The price is cheaper.
  • Good fluidity.
  • The product has various types; hence, users could choose the type according to the applicable fineness, surface area, bulk density, and whiteness.

Applications

  • Apply to rubber and plastic industries: Calcium carbonate plays the role of contamination-free filler in the material. It is extensively used in tires, tapes, rubber tubes, oil seal, and component parts of the rubber. It is often used in polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS, nylon, etc. products in the plastic industry. Not is only calcium carbonate used alone as a reinforced filler, but also it can be used together with other fillers , such as carbon black, white carbon black, clay, or titanium dioxide powder, to achieve reinforcing, filling, coloring, improving working and product performance, reducing latex content or replacing partial high-priced white fillers.
  • Apply to paints: synthetic resin paints, glazes, oil-based paints, latex paints, primer paints.
  • Apply to agriculture and animal husbandry: soil modification, cropper protective agent, the additives of fertilizer or fodder, etc.
  • Apply to medicine or health-care food: calcium tablets, calcium-supplemental agents, capsules, tablets, the calcareous source of the food, etc.
  • Apply to articles for daily use:tooth paste, tooth powder, environment-friendly (garbage) bags, etc.

Package

The appearance of the product is white powder, which is packaged in a three-layered kraft sack per twenty five kilograms or a bag per one thousand kilograms.