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Xinyu South Wollastonite Co. Ltd
Address:Renhe Town, Xinyu City, Jiangxi Province, China
Tell: 0790-6710815   
Phone: 13807902693 13979026187   
E-mail:
xynf@xynf.cn

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SA Series Superfine Wollastonite Powder
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SA Series Superfine Wollastonite Powder

Wollastonite is a typical metamorphic mineral, which has primarily occurred in contact
belt between acid rock and limestone, and sometimes occurred in deep metamorphic
Calc schist, volcanic product and in some alkaline rock. The chemical molecular
formula of Wollastonite is CaSiO3, and structural formula is Ca3 [Si3O9], the theoretical
chemical compositions: 48.25% CaO, 51.75% SiO2.
Wollastonite is a thin plate-like crystal of triclinic crystal system whichbelongs to a chain
silicate. Its aggregation is radial or fibrous. Its special crystal structure determines its
properties, Wollastonite with the advantage of non-toxic, acid and alkali resistant, low
hygroscopicity, low oil absorption, low conductivity, good insulation, high whiteness,
thermal stability and dimensional stability good, excellent mechanical properties and
electrical characteristics. Wollastonite is a natural green, low carbon emission and energy
saving industrial mineral.
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Product parameters

 

Component SiO2
(%)
CaO
(%)
Al2O3
(%)
Fe2O3
(%)
TiO2
(%),Max
MgO
(%)
S
(%),Max
P
(%),Max
L.O.I
(1050℃) (%)
PH
XYNFW-SA 48-53 43-45 0.15-0.30 0.2-0.3 0.02 0.5-1.2 0.02 0.007 1-3 9

 

Specifications Mesh(D50μm)
XYNFW-SA 600 800 1000 1250 2000 2500 3000 5000 6000

 

Physical Properties of Wollastonite

 

Item Value
Particle Size (mesh) 600-6000
Aspect Ratio(L:D) 2:1-3:1
PH 9.9-10.0
Oil Absorption (g/100g) 40-50
Whiteness(%) >0
Refractive Index(%) 1.63
Density (g/cm2) 2.95
Coefficient of Expansion (mm/mm℃) 6.5×106
Melting Point (℃) 1450
Hardness (Mohs) 4.5-5.0

 

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