An apparatus for manufacturing glass includes a furnace. A doghouse of the furnace receives and melts solid-glass forming material using one or more submerged combustion burners. An elongated tank positioned downstream of the doghouse includes a melting chamber, a refining chamber, and a thermal conditioning. The melting chamber has in inlet through which molten glass is received from the doghouse. The refining chamber is positioned downstream of the melting chamber and receives molten glass from the melting chamber. The thermal conditioning chamber is positioned downstream of the refining chamber and receives molten glass from the refining chamber. Additionally, the thermal conditioning chamber delivers molten glass to a glass forming machine.

A glass manufacturing apparatus includes a dissolving vessel configured to dissolve a glass raw material to produce a molten glass, a forming vessel configured to form the molten glass into a predetermined shape, and glass supply tubes configured to convey the molten glass from the dissolving vessel to the forming vessel. The glass supply tubes each include a tube body, a flange portion, which is arranged in an outer circumferential portion of the tube body and has first and second parts, an electrode portion arranged in the first part, and a temperature difference setting portion configured to cause a temperature difference between the first and second parts. The temperature difference setting portion sets a temperature of the first part to be higher than that of the second part.

A method for reconditioning a glass manufacturing system includes establishing a reducing atmosphere in a glass melting vessel and draining a glass melt composition from the melting vessel while the reducing atmosphere is in the vessel. The pressure of the reducing atmosphere is greater than the pressure of the atmosphere surrounding the melting vessel and the reducing atmosphere is established by operating at least one combustion burner in the melting vessel in a fuel-rich condition.

A glass fining system, glass fining device, and method are disclosed. The glass fining device in accordance with one aspect of the disclosure includes at least one heated orifice through which molten glass flows from a glass melter to produce at least one superheated glass stream; and a low-pressure chamber disposed downstream from the heated orifice, where the at least one superheated glass stream flows from the at least one heated orifice and into the low-pressure chamber, and where the low-pressure chamber surrounds the at least one superheated glass stream. In some embodiments, the low-pressure chamber may include at least one surface extender.

A glass fining system, glass fining device, and method are disclosed. The glass fining device in accordance with one aspect of the disclosure includes at least one heated orifice through which molten glass flows from a glass melter to produce at least one superheated glass stream; and a low-pressure chamber disposed downstream from the heated orifice, where the at least one superheated glass stream flows from the at least one heated orifice and into the low-pressure chamber, and where the low-pressure chamber surrounds the at least one superheated glass stream. In some embodiments, the low-pressure chamber may include at least one surface extender.

An exhaust conduit for a glass melt system includes a corrosion resistant refractory conduit material, such as a conduit material including zirconia. The conduit can extend through a relatively dense refractory block material, such as a refractory block comprising alumina. The exhaust conduit can exhibit improved corrosion resistance in processing a variety of glass melt compositions.

An exhaust conduit for a glass melt system includes a corrosion resistant refractory conduit material, such as a conduit material including zirconia. The conduit can extend through a relatively dense refractory block material, such as a refractory block comprising alumina. The exhaust conduit can exhibit improved corrosion resistance in processing a variety of glass melt compositions.

Provided is a manufacturing method for a glass article, including: a pre-heating step (S1) of heating a transfer pipe (7); and a transfer step (S4) of allowing a molten glass to flow inside the transfer pipe (7) after the pre-heating step (S1). The transfer pipe (7) includes: a main body portion (8) having a tubular shape; and a flange portion (9a, 9b) formed at an end portion of the main body portion (8). The main body portion (8) is retained by a refractory (10). The pre-heating step (S1) includes an external force application step of applying an external force (F) to the transfer pipe (7) to extend the transfer pipe (7).

Provided is a manufacturing method for a glass article, including: a supply step of supplying glass raw materials (4) onto a molten glass (2) accommodated in a melting chamber (3) of a glass melting furnace (1); a melting step of melting the supplied glass raw materials (4) through heating; and an outflow step of causing the molten glass (2) to flow outside the melting chamber (3), wherein the glass raw materials (4) supplied from one screw feeder (5) and another screw feeder (5), which are adjacent to each other out of a plurality of screw feeders (5), extend in parallel through intermediation of a gap (6) on the molten glass (2), and wherein the glass raw materials (4) are melted through heating only with an electrode (8) and an electrode (9) each immersed in the molten glass (2) in the melting chamber (3).

An apparatus and method of refining molten glass are disclosed. An upstream vessel contains molten glass, a downstream vessel is arranged downstream of the upstream vessel, and vacuum refining vessels are located between the upstream vessel and the downstream vessel and are in separate, alternating fluid communication with the upstream vessel and in separate, alternating fluid communication with the downstream vessel.