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Glass furnaces are divided into crucible furnace, intermittent furnace and continuous furnace.

Typically a flame - electrofusion combine glass furnace. They all include four parts: glass melting, heat source supply, waste heat recovery and exhaust gas supply.
The flame in that flame furnace leave the chamber with a large amount of afterheat, which can be use to heat combustion-supporting air and gas to increase flame temperature and save fuel. The recover waste heat mainly adopts a heat storage cham or a heat exchanger.
Glass furnace insulation:
The maximum working temperature of the kiln pool is 1600 deg c, and the temperature fluctuation range of each part is 100 - 200 deg c;
Glass solution containing silica, acidic, corrosive;
Strong mechanical flushing of glass flow.
Self - closed top insulation: silicon sealing material ( wear layer ) + light silicon brick ( insulation layer ) + ceramic fiber castable 100 mm ( insulation layer ).
Wall insulation: use fused zirconia corundum brick, AZS brick or compact zircon brick.
Bottom insulation: composite insulation structure with strong integrity, fused AZS brick + zircon ramming mix or fused corundum ramming mix ( wear - resistant layer ) + clay brick ( insulation layer ) + ceramic fiber board 2 30 mm thick, staggered seam layer ( insulation layer ).
Thermal storage chamber insulation: lattice brick material: high-grade magnesia brick ( upper ) + middle-grade magnesia brick ( middle ) + low porosity clay brick ( lower ) self - closed, breast wall and small furnace, feeding pool, liquid flow hole, cooling pool, forming pool, etc., all adopt different grades of refractory brick: silica brick, fused zirconia corundum brick, AZS - 33 brick, alpha - Al2O3 brick.
Heat preservation of float glass tin bath: 1100 ℃ at the front end and 600 ℃ at the end; high density refractory brick or heavy castable + clay insulating brick + ceramic fiber board ( heat insulation layer ) for tin bath.
The application of unshaped refractory in glass kilns is also a development trend. In Britain, refractory concrete prefabricated blocks are used to build regenerator, lattice brick bottom self - closed, flue, small furnace support plate, burner and so on, which greatly reduces the joint of kiln structure, improves the furnace building speed and shortens the cold repair time;
High alumina brick, light silica brick and fiber are widely used in foreign glass kilns, mainly based on aluminosilicate fiber. In Germany, lightweight calcium silicate-based products are widely used in addition to diatomaceous earth, aluminosilicate and silicate fiber materials.
Float glass annealing furnace: the highest annealing temperature of float glass is 540 - 570 ℃ and the temperature is kept for 2 min. The annealing kiln is not insulated and is cooled by the steel shell.

Technical advantage
●Ceramic fiber board performance:
●Low thermal capacity, low thermal conductivity
● high compressive strength and long service life
● accurate size and good flatness
●Low homogeneous structure, easy to machine
●Low light heat insulation, better keep the kiln pool solution temperature