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Wollastonite
Wollastonite
Wollastonite
Wollastonite

MengziWollastonite

Wollastonite is a typical metamorphic mineral, mainly produced in the contact zone of acid rocks and limestone, but also found in deep metamorphic calcareous crystalline schists, volcanic eruptions and some alkaline rocks. Its chemical formula is CaSiO3, structure Ca3[Si3O9], theoretical chemical composition: CaO 48.25%SiO2 51.75%. Wollastonite belongs to a chain-like metasilicate, which is a triclinic crystal system, fine plate-like crystal, and the aggregate is radial or fibrous. Due to its special crystal structure, its properties are determined. It has the characteristics of non-toxic, acid and alkali resistance, low moisture absorption, low oil absorption, low conductivity, good insulation, high whiteness, good thermal stability and dimensional stability, excellent mechanical and electrical properties, etc, natural green, low-carbon and energy-saving industrial mineral raw materials.

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MengziWollastonite Class A Small Pieces

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Product Description

Wollastonite is a typical metamorphic mineral, mainly produced in the contact zone of acid rocks and limestone, but also found in deep metamorphic calcareous crystalline schists, volcanic eruptions and some alkaline rocks. Its chemical formula is CaSiO3, structure Ca3[Si3O9], theoretical chemical composition: CaO 48.25%SiO2 51.75%. Wollastonite belongs to a chain-like metasilicate, which is a triclinic crystal system, fine plate-like crystal, and the aggregate is radial or fibrous. Due to its special crystal structure, its properties are determined. It has the characteristics of non-toxic, acid and alkali resistance, low moisture absorption, low oil absorption, low conductivity, good insulation, high whiteness, good thermal stability and dimensional stability, excellent mechanical and electrical properties, etc, natural green, low-carbon and energy-saving industrial mineral raw materials.

Wollastonite Chemical Index

Ingredients
Component		GASHW-AGASHW-BGASHW-C
Grade A wollastonite primary WollastoniteWollastonite secondary Wollastonite Grade BWollastonite Class III Wollastonite Grade C
SiO2 (%)48-5347-5247-54
High (%)43-4538-4235-40
Al2O3 (%)0.15-0.300.15-0.300.15-0.30
Fe2O3(%)0.2-0.30.3-0.50.5-0.6
TiO2 (%)，Max0.020.020.02
MgO (%)0.5-1.20.5-1.50.5-2.0
S (%)，Max0.020.030.03
P (%)，Max0.0070.0070.007
L.O.I (1050℃) (%)1-34-86-18
PH999

Physical index of wollastonite

ItemValue
 Particle Size (mesh)80- 6000
Aspect Ratio(L:D)3:1-25:1
 Sedimentation Value (ml/200mg)40-150
Oil Absorption Value Oil Absorption (g/100g)20-55
Whiteness Whiteness(%)75- 92
Refractive Index（%）1.63
Density Density (g/cm2)2.95
Coefficient of Expansion (mm/mm℃)6.5 × 106
Melting Point (℃)1450
Hardness (Mohs) Hardness (Mohs)4.5-5.0

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