Choose Round Day Tanks when you have no time for downtime due to a leaky crucible. These workhorses can go for years before major maintenance may be required. These furnaces are very efficient glass melters thanks to small external surface area, generous insulation, heat recuperation, tight construction, unique heating chamber design and large glass surface area exposed to the heat.

Round Day Tank models are lined with press bonded AZS. We have used this material since 1999, and found it to hold up very well to thermal shock and corrosion. The first furnace liner we built from this material lasted for 13 years at Tulane University in New Orleans, LA. We expect 8-10+ year lifespans and have recorded 35% reduction in heat loss compared to our earlier rectangle models. Clients report higher glass quality as well, which can be attributed to a decrease in combustion volume and the absence of corners in the tank liner.

Our furnaces come standard with OnSite, providing you with a smooth interface for the temperature controller, programmable text and email alerts, and remote access through the internet. Error Codes are displayed and interpreted, with common issues listed.

Round day tanks can be rebuilt or refurbished as they near the end of life.  With a refurbishment high wear castings and metal are replaced, the liner is ground and patched, existing metal is cleaned and repainted, and the control and heating system can be tested, upgraded, or replaced.  When a furnace is rebuilt, nearly all refractory is replaced, as well as high wear metal. Existing metal is reused as much as possible, and the control system can be reused as well.

Our standard models are listed below, but we can also work with you to customize the furnace with several options that can be added.  Electric furnaces require moderate assembly and installation of heating elements, transformer, and control panel at the furnaces location. Combustion Furnaces are nearly “plug and play”.