High‑purity lime and mineral solutions for glass manufacturing

Glass is a material like no other - strong, pure, and endlessly recyclable. From the windows that fill our spaces with light to the containers that protect what matters most, flawless glass begins with unwavering raw material quality. We support you with high purity limestone, dolomite, lime, and dolime that help ensure stable melting, precise forming and consistent brilliance in your final products.

Flat glass

Flat glass production requires stable melting behavior and precise forming conditions. In the float process, molten glass is transformed into high-quality panes for construction, automotive and solar applications.

Whether you produce: 

  • Colored glass for automotive glazing 
  • Clear or extra‑clear architectural glass 
  • Ultra‑clear glass for solar panels 

Our limestone, dolomite and lime, dolime solutions help you: 

  • Control viscosity during melting and forming 
  • Improve chemical durability 
  • Maintain stable processing and consistent product quality
someone is filling a container glass in a kitchen

Container glass

As cullet usage increases, maintaining consistent glass quality becomes even more critical. Higher recycled content raises the need for low-iron primary raw materials.

With rising cullet use, raw material purity is essential. Our solutions help you:

  • Stabilize melts with high recycled content 
  • Reduce crystallization risks 
  • Maintain optical clarity and forming consistency 

Limestone supplies CaO, while dolomite contributes both CaO and MgO - giving you broader processing flexibility.

Glass fibers

Fiber production for automotive, aerospace, energy and electronics applications demands precision and consistency. We support you with:

  • Fine‑milled limestone and dolomite 
  • Fine white lime (quicklime) and dolime 
  • Kaolin as a controlled aluminum source 

For conventional and fully‑electric cold‑top furnaces, our calcined products help you:

  • Increase melting efficiency and tank capacity 
  • Prevent foam formation 
  • Reduce hot-breakthrough risk 

Glass fibers for insulation 

In glass and mineral wool production, melt consistency directly affects fiber quality. Our limestone, dolomite, lime and dolime solutions help you: 

  • Fine‑tune melt behavior 
  • Control fiber formation 
  • Achieve stable thermal performance 

All while supporting the use of natural raw materials and recycled glass. 

Technical glass

For electronics, displays, laboratory ware and high-temperature glass, our solutions help you: 

  • Achieve precise melting and shaping 
  • Improve chemical durability 
  • Meet the stringent quality standards 

Visucal® for glass

Visucal® delivers specialized glass‑grade solutions with tight quality control and technical support - helping you optimize transparency, durability and process efficiency.

How lime and minerals improve glass performance

Most flat, container, fiber and technical glass relies on soda-lime-silicate formulations, where limestone, dolomite, lime and dolime play a critical role in helping you control:

  • Transparency and color consistency 
  • Mechanical strength and durability 
  • Chemical resistance 
  • Melting and forming behavior

Burnt products such as lime and dolime do not release CO2 during the melting process and can help you reduce furnace energy consumption compared to carbonated raw materials.

 

Securing viscosity control and stable melting

Calcium oxide (CaO) and magnesium oxide (MgO) from limestone, dolomite, lime and dolime help you: 

  • Control glass viscosity across temperature ranges 
  • Maintain stable melting and forming conditions
  • Enhance chemical resistance and long-term glass performance 

Find out more about other markets

Your partner in glass manufacturing

With deep expertise and strong local presence, Lhoist supports glass producers in improving quality, enhancing efficiency and maintaining reliable operations across all glass segments.