NYCO's wollastonite has found wide acceptance in metallurgical applications.
Its chemical purity, non-toxicity, consistent high quality coupled with NYCO's technical advisors and dependable supply make it a natural choice by the steel industry. Few can offer this winning combination.

Our wollastonite is typically used as an additive, whether on its own or compounded with other materials, to improve, among other things,

• continuous casting - mold powders,tundish powders
• slag conditioning and inclusion modification

Benefits
Wollastonite is commonly used by the industry for its low temperature fluxing and inclusion modification properties. These properties that make it an ideal performance additive for the steel industry include:

• Low melting point (1540ºC)
• CaO:SiO2 ratio close to 1 (one)
• Consistent chemistry
• Soften point; Seger cone 1400ºC
• Various particle sizes available
• Low viscosity
• Temperature (ºC) Poise
  1550 2.73
  1600 2.40
  1650 2.38

These unique properties translate into key benefits for metallurgical applications:

• prevention of re-oxidation
• absorption of non-metallic inclusions
• lubrication
• uniform heat transfer
• reduction of nozzle blockages
• contributes to uniform heat transfer of slag
• low control melting point especially for silica kiln electric arc furnace steel

Back to top