Gold Member Since 2014
Audited Supplier
Qingzhou Zhongyuan Chemical Industry Co., Ltd.

Wollastonite, Grammite, Tabular Spar manufacturer / supplier in China, offering Wollastonite, for Ceramics, Rubber and Paper Industry; Plastic Industries, Sodium Hexametaphosphate (Food Grade) , as Water Softener for Boiler Water and Industrial Water, SHMP Sodium Hexametaphosphate, 68%, 65%, 60%, Factory Price, Water Softening Agent in Solution for Printing, Dyeing, and Boiler and so on.

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Supplier Homepage Product Natrual Stone Wollastonite, for Ceramics, Rubber and Paper Industry; Plastic Industries

Wollastonite, for Ceramics, Rubber and Paper Industry; Plastic Industries

FOB Price: US $150-450 / Ton
Min. Order: 25 Tons
Min. Order FOB Price
25 Tons US $150-450/ Ton
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Port: Dalian, China
Production Capacity: 3000tons/Month
Payment Terms: L/C, T/T, Western Union, Money Gram

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Basic Info
  • Model NO.: SiO2 45-55%
  • Purity: 50%~80%
  • Appearance: Powder
  • CAS No.: 1344-95-2, 10101-39-0
  • Transport Package: Plastic Bag
  • Origin: Shandong
  • Certification: CIQ, ISO
  • Type: Wollastonite
  • Grade Standard: Industrial Grade
  • Trademark: LY
  • Specification: SiO2 45-55%
  • HS Code: 2530909100
Product Description
Our advantage:
1. Factory price,
2. Good Quality,
3. Free sample,
4. ISO Cerficate,
5. A long stable supplier,
6. Good support to you
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Introduction
Wollastonite can reduce the sintering temperature and shorten the sintering time, achieve a low-temperature sintering, and can save a lot of fuel, at the same time improve the mechanical properties of the products, reduce crazing, crack, breakage, enamel defects, such as warping and problems. It can also improve green strength, reduce the product weight, increase luster glaze, reduce the glaze mud viscosity.
 
 Chemical Properties
ItemIndex
SiO245-55%
CaO40-50%
Fe2O31.0%max
S0.04%max
P0.04%max
Al2O31.5%max
MGO1.5%max
L.O.I1.5-4.0%max
Sedimentation30 Minutes
pH Value7-9
 
 Physical Properties
ItemIndex
Whiteness90min
Mohs Hardness4.5
Specific gravity2.90%
Refractive Index1.63
Surface Water &le0.30%
  
Application
Wollastonite has industrial importance worldwide.
It is used in many industries, mostly by tile factories which have incorporated it into the manufacturing of ceramic to improve many aspects, and this is due to its fluxing properties, freedom from volatile constituents, whiteness, and acicular particle shape. In ceramics,wollastonite decreases shrinkage and gas evolution during firing, increases green and fired strength, maintains brightness during firing, permits fast firing, and reduces crazing, cracking, and glaze defects.
 
In metallurgical applications, wollastonite serves as a flux for welding, a source for calcium oxide, a slag conditioner, and to protect the surface of molten metal during the continuous casting of steel.
 
As an additive in paint, it improves the durability of the paint film, acts as a pH buffer, improves its resistance to weathering, reduces gloss,reduces pigment consumption, and acts as a flatting and suspending agent.In plastics, wollastonite improves tensile and flexural strength reduces   resin consumption, and improves thermal and dimensional stability at elevated temperatures. Surface treatments are used to improve the adhesion between the wollastonite and the polymers to which it is added.
 
 As a substitute for asbestos in floor tiles, friction products, insulating board and panels,paint,  plastics, and roofing products, wollastonite is resistant to chemical attack, inert,stable at high temperatures, and improves flexural and tensile strength.
 
In some industries,it is used in different percentages of impurities such as its use as,a fabricator of mineral wool insulation,or as an ornamental building material.and rubber applications were estimated to account for 25% to 35% of U.S. sales in 2009, followed by ceramics with 20% to 25%; paint, 10% to 15%; metallurgical applications, 10% to 15%; friction products, 10% to 15%; and miscellaneous, 10% to 15%. Ceramic applications probably account for 30% to 40% of wollastonite sales worldwide, followed by polymers (plastics and rubber) with 30% to 35% of sales, and paint with 10% to 15% of sales. The remaining sales were for construction, friction products, and metallurgical applications.
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