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Glass is an environmentally-friendly product used for building, packaging and technology. It is made from silica sand, soda ash and limestone and/or dolomite. The oxides from these natural minerals form the glass, solidify it and enhance its major chemical and physical properties.
Limestone and dolomite provide the necessary CaO component for glass by working as a network modifier. MgO from dolomite- or dolime-based products offers further advantages during the melting process. It also adds properties such as reduced melt viscosity, avoidance of crystallization and physical resistance. Lhoist supplies the glass industry with dedicated pure dolomite and limestone products of very consistent chemical composition and particle size under the Visucal® brand. These minerals and the oxides from them along with CaO special products are used for the production of different types of glass. Another of our lime products, Sorbacal®, is very efficient for Flue Gas Treatment installations on glass manufacturing facilities.