Gobind Glass Industries Ltd. India invited Lahti Glass Technology to quote upgrading of an existing Batch Plant for the needs of their planned new furnace for solar glass production. Negotiations were concluded in late summer 2021.
In India there is a big boom in solar panel production. The new furnace was specially dedicated to satisfy the demand of extra clear glass. Production of such glass requires very low iron content in the raw materials, typically below 100 ppm. That also means special technology for the machinery, first to eliminate possible metallic and paramagnetic impurities and secondly to protect raw materials from contamination, like wear of material contacting surfaces. It is vital to have low iron content, because iron makes glass greenish. Loosing transparency is harmful for the efficiency of the solar panel.