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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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SW Series Superfine Acicular Wollastonite Powder
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SW Series Superfine Acicular 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
Particle size analysis

 

Component SiO2
(%)
CaO
(%)
Al2O3
(%)
Fe2O3
(%)
TiO2
(%),Max
MgO
(%)
S
(%),Max
P
(%),Max
L.O.I
(1050℃) (%)
PH
XYNFW-SW 48-53 43-45 0.15-0.30 0.15-0.45 0.02 0.5-1.2 0.02 0.007 1-4 9

 

 

Specifications Mesh D50(μm) Loose Density(g/ml) Tapped Density(g/ml) Sedimentation Value(ml/30g) Aspect Ratio
(L:D)
Whiteness(%)
XYNFW-SW18 600 18±1 0.35-0.45 0.50-0.60 ≥55 10:1-15:1 85-92
XYNFW-SW15 800 15±1 0.30-0.45 0.45-0.60 ≥70 10:1-15:1 85-92
XYNFW-SW13 1000 13±1 0.30-0.45 0.40-0.65 ≥85 10:1-15:1 85-92
XYNFW-SW10 1250 10±1 0.30-0.40 0.45-0.58 ≥ 120 15:1-18:1 85-92
XYNFW-SW8 1500 8±1 0.20-0.40 0.35-0.60 ≥125 15:1-18:1 85-92
XYNFW-SW6.5 2000 6.5±1 0.30-0.35 0.30-0.55 ≥130 15:1-18:1 85-92
XYNFW-SW5 2500 5±1 0.15-0.35 0.30-0.55 ≥150 15:1-18:1 85-92

 

Physical Properties of Wollastonite

 

Item Value
Particle Size (mesh) 600-3000
Aspect Ratio(L:D) 10:1-18:1
Sedimentation Value (ml/200mg) 55-140
Oil Absorption (g/100g) 40-50
Whiteness(%) >90
PH 9.9-10.0
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

 

Corresponding parameter set not found, please add it in property template of background

 

 

 

 

 

 

 

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