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Chemical composition and specification of wollastonite



Physical  and chemicial index

SiO2

CaO

Al2O3

Fe2O3

TiO2

MgO

S

P

Loi

Size

Whiteness

L/D

Particle size

45-56

38-43

0.8

0.3

0.003

0.8

0.003

0.003

5.5-6

0-8mm

≥75

Glaze grade powder

49-51

44-46

0.8

0.25

0.003

0.8

0.003

0.003

1.5-2.5

325-800mesh

≥85

Metallurgy grade powder

49-51

44-46

0.8

0.25

0.003

0.8

0.003

0.003

1.5-4

200mesh

≥90

325mesh

Superfine powder

49-51

44-46

0.8

0.25

0.003

0.8

0.003

0.003

1.5-3

800-1250mesh

≥92

Needle-like powder

49-51

44-46

0.8

0.25

0.003

0.8

0.003

0.003

1-4

100-325mesh L/D21:1-16:1

≥90

Superfine needle-like  powder


49-51

44-46

0.8

0.25

0.003

0.8

0.003

0.003

1-4

Above 800mesh L/D18:1-10:1

≥92



Application of Wollastonite

 

Application Industry

Main Use

Ceramics

1. glazed brick

2. sanitary porcelain

3. household porcelain

4. artistic porcelain

5. electrical porcelain

6. wireless electric porcelain with high frequency and low loss

7. chemical stoneware

8. glaze

9. pigment

Chemicals

1. coating

2. paint

3. rubber

4. plastic product

5. resin filling

Metallurgy

1. covering slag of casting steel

2. heat insulating material

Construction

1. accessory building materials  or white cement  replacing asbestos

2. raw materials of microcrystalline glass with acid resistance and alkali resistance

3. fluxing agent of glass

Electronics

1. electronic insulation material

2. coating material of fluorescent lamp, television tube, X-ray fluorescent screen

Machinery

1. electric welding material

2. abrasive material of grinding apparatus

3. casting mould

Paper-making

filling for replacing partial paper pulp

Autocar

filling of clutch, brake, handle of car door, bumper and other engineering plastics products

Agriculture

1. modifying agent of soil

2. plant fertilizer

Other

1. filter medium

2. refractory material of glass melting furnace

 

 

Packaging Method: 

pp bag, 1mt/bag, 25kg/bag or as customer’s request. 


Application scenarios

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