Tested Wollastonite Powder | Calcium Silicate for Ceramics & Glazes

Description

Tested Wollastonite Powder | Calcium Silicate for Ceramics & Glazes

Upgrade your ceramic bodies and glazes with our tried-and-tested Wollastonite Powder (CaSiO3). Backed by a decade of proven studio performance, this high-grade calcium silicate provides an optimal source of both calcium oxide (CaO) and silica (SiO2) in a single, stable mineral form.

Unlike traditional whiting or calcium carbonate (CaCO3), Wollastonite contains no carbonates. This allows it to decompose cleanly during firing without releasing carbon dioxide gas, eliminating pinholing, blistering, and off-gassing defects in your glazes and clay bodies.

Key Features & Technical Benefits:

• Defect-Free Calcium Source: Seamlessly replaces whiting and calcium carbonate to deliver smooth, bright, and defect-free glaze surfaces.

• Reduced Shrinkage & Warping: Minimizes both drying and firing shrinkage while controlling moisture expansion in finished wares.

• Superior Thermal Shock Resistance: Its naturally low coefficient of thermal expansion improves heat-shock durability and prevents crazing.

• Enhanced Fired Strength: The acicular (needle-like) mineral structure provides internal reinforcement for higher mechanical strength and better bonding.

• Production & Energy Efficiency: Enables faster firing schedules, easier pressing, and lower energy usage in kilns.

Primary Applications:

1. Flint & Limestone Replacement: Simplifies recipes while delivering cleaner, more predictable firing behavior.

2. High-Performance Bodies & Glazes: Ideal for producing brighter glazes, porcelain enamels, frits, and high-strength technical ceramic bodies