About Wollastonite
Wollastonite (Calcium Meta Silicate) :-
Typical Chemical Analysis :-
- Contents :- Percent
- Calcium Oxide :-Cao :- 47.00
- Silica :-Sio2 :-49.50
- Magnesium Oxide :-Mgo :- 00.20
- Alumina :- Al2O3 :-00.60
- Ferric Oxide:- Fe2O3:-00.43
- Titanium Dioxide :-Tio2 :-Traces
- Manganese Oxide :-Mno :-00.29
- Sodium Oxide:-Na2O:-00.02
- Potassium Oxide:- K2O:-00.11
- Loss On Ignition:- Loi:-01.80
Guarantee :-
- Calcium Oxide +Silica Cao+Sio2 :-96.0 % Minimum
- Ferric Oxide Fe2O3:-00.5 % Maximum
- Alumina Al2O3 :-01.5 % Maximum
- Loss On Ignition:- Loi:-02.0 % Maximum
Typical Physical Properties :-
- Chemical Formula :-Casio3
- Molecular Weight :-116
- Form & Habit :-Bladed Crystal Masses
- Crystal System:-Triclinic (Acicular)
- Colour :-Brilliant White
- Lustre :-Pearly
- Brightness :-78 % To 92 %
- (As Compared To 100 % Mgo)
- Refractive Index :-1.627
- Specfic Gravity :- 2.9
Bulk Density
- Loose:- 0.33 To 0.55 Gm/Ml
- Tapped:-0.60 To 0.95 Gm/Ml
- Hardness:-4.5 (MohS Scale)
- Oil Absorption :-40 To 65 (W/W)
- Ph Of 10 % Slurry
- (Freshly Prepared) :-9.0 (At Ambient)
- Solubility In Water :-0.01 %
- Melting Point:-15400 C
- Co-Efficient Of Expansion :- 6.5 X 10-6(E0)-1
Thermal
- Conductivity 350-6000 C :-2.16 (Gm/Cal)/(Sec-0C X 103)
- Chemical Activity:-Largely Inert.Decomposes In Acids.
- Specific Heat:-0.24 Cal/Gm 0C
Exceptional Thermal and Mechanical PropertiesFeaturing very good dimensional stability and high mechanical strength, Wollastonite maintains its structure under extreme heat, making it perfect for siliceous refractories. Its low thermal conductivity and minimal porosity further enhance its reliability in high-temperature environments, especially in ceramics and metallurgy.
Versatile Applications for Diverse IndustriesWollastonites smooth finish and low water absorption allow for broad usage in ceramic tiles, paints, plastics, rubber, construction, and friction products. Its consistency and high purity make it a preferred choice for manufacturers seeking quality and performance across multiple sectors, supporting a wide network of distributors and suppliers.
FAQs of Wollastonite:
Q: How is Wollastonite used in the ceramics industry?
A: In ceramics, Wollastonite serves as a flux, aiding in sintering, reducing shrinkage, and improving the mechanical strength and dimensional stability of ceramic tiles and products.
Q: What are the primary benefits of using Wollastonite in paints and plastics?
A: Wollastonite enhances paint and plastic formulations by imparting smooth surface finishes, increasing mechanical strength, and providing low water absorption, which improves product durability and longevity.
Q: When should manufacturers choose Wollastonite for their products?
A: Manufacturers should select Wollastonite when they require materials with high thermal stability, low porosity, and superior mechanical strength for applications in ceramics, friction products, and construction, especially where high-temperature resistance is crucial.
Q: Where is Wollastonite typically sourced and supplied in India?
A: Wollastonite is primarily distributed, exported, manufactured, supplied, and traded by specialized companies across India, servicing a broad range of industrial sectors nationwide.
Q: What is the process for incorporating Wollastonite into industrial applications?
A: The mineral is usually supplied as powder or lumps. It is blended into raw material mixes during production, ensuring uniform dispersion and optimizing the mechanical and thermal properties of the final product.
Q: How does Wollastonite contribute to improved surface finish and reduced porosity?
A: Thanks to its stable structure and smooth particle profile, Wollastonite provides a fine surface finish while its low porosity reduces defects, enhancing both aesthetic quality and functional performance in end products.
Q: What advantages does Wollastonite offer in friction products and metallurgy?
A: In friction products and metallurgical applications, Wollastonites high melting point, low thermal conductivity, and pronounced mechanical strength make it suitable for maintaining performance and integrity under intense thermal and mechanical stress.
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