Abstract:
L'invention concerne un procédé et un dispositif de fabrication de verre fondu comprenant d'amont en aval un four de fusion et d'affinage de verre muni de brûleurs aériens transversaux, puis un bassin de conditionnement alimenté en verre par le four, le dimensionnement du dispositif de fabrication étant tel que K soit supérieur à 3,5, le facteur K étant déterminé à partir des dimensions du dispositif. L'invention permet de dimensionner un dispositif de fusion de verre de plus faible dimension et consommant moins d'énergie tout en menant à un verre de bonne qualité.
Abstract:
A glass manufacturing system and a method are described herein for reducing gaseous inclusions in high melting temperature or high strain point glasses, such as those that are used as glass substrates in flat panel display devices. In one embodiment, the method including the steps of: (a) heating a batch material within a melting vessel to form molten glass at a melting temperature T M , the molten glass comprising a multivalent oxide material; (b) heating the molten glass within a fining vessel to a fining temperature T F ≥ T M ; and (c) cooling the molten glass within a refractory tube after the first heating step or after the second heating step to a cooling temperature T C less than T M , where the molten glass remains within the refractory tube for a predetermined resident time to reduce a volume of the gaseous inclusions in the molten glass and cause gas species to migrate out of the gaseous inclusions into the molten glass such that at least a portion of the gaseous inclusions collapse into the molten glass.
Abstract:
The invention relates to the production mineral wool products from basalt-bearing rock ( basalt, andesite-basalt, andesite, gabbro etc) which can be used in the building industry, in medicine, for manufacturing furniture, in chemical industry for insulating high temperature equipment. The inventive method for producing mineral wool products consists in loading a fine basalt-bearing rock in to a melting furnace, melting, cooling the melt to a temperature of production of a fiber, discharging said melt from the furnace, forming and deposing said fiber by means of the separation thereof followed by the production of the material. The basalt-bearing rock is pre-heated before it is loaded into the furnace. The melting is carried out in a bottom-electrode arc furnace fitted with carbon electrodes. Before cooling, the melt is heated to the temperature exceeding the fusion temperature and ranging between 50 DEG C and 250 DEG C in addition to being conditioned in a stabilizing chamber of the furnace in order to obtain an average composition of a glass mass and an iron melt. Afterwards, the iron melt is evacuated. The inventive production line for producing mineral wool is provided with a heat exchanger connected to the dosing mechanism and to the inside of the furnace. The melting furnace is embodied in the form of a bottom-electrode arc furnace fitted with the carbon electrodes and with the chamber stabilizing the average composition of the glass mass and mounted on the lower part of the furnace. Said stabilizing chamber is also used for cooling the melt to the temperature of production of the fibers and is fitted, in a bottom part thereof with a drawhole for evacuating the iron melt and the drawhole for melted glass mass.
Abstract:
A glass manufacturing apparatus comprises at least one nozzle facing a conduit and extending transverse to a travel path defined by the conduit. The at least one nozzle is configured to cool molten material within the interior of the conduit with a stream of cooling fluid forced against an exterior of the conduit along a cooling axis extending transverse to the travel path defined by the conduit. In further examples, methods of processing molten material includes cooling the molten material within an interior of a conduit by forcing a stream of cooling fluid against an exterior of the conduit along a cooling axis extending transverse to a travel path defined by the conduit.
Abstract:
本発明は、ガラス製品の高品質化と、溶融ガラス製造での省エネルギー化と、を同時に実現する溶融ガラス製造装置、および該製造装置を用いた溶融ガラス製造方法、ならびにガラス製品の製造方法を提供する。 減圧脱泡装置を有する溶融ガラス製造装置であって、溶解槽には、溶解槽内における溶融ガラス流の循環を上流側循環流と下流側循環流とに分離する分離手段が設けられており、溶解槽の溶融ガラス流路の長さをL F とするとき、分離手段から溶解槽の溶融ガラス流路の下流端までの距離が0.1L F ~0.45L F であり、第1の導管構造において、溶融ガラスの流動方向上流側には、第1の導管構造の他の部位よりも幅が広い幅広部位が設けられており、該幅広部位には幅広部位を通過する溶融ガラスを冷却する手段が設けられていることを特徴とする。
Abstract:
A glass making furnace wherein the glass constituents are fed from a hopper (10) into a melting chamber (15). Molten glass flows into the chamber (16) for passage through a homogenizer (25) for shear mixing of the glass and elimination of bubbles therefrom. A flow modulating valve (50) regulates the rate of flow of the molten glass to an extrusion nozzle (93).
Abstract:
A glass manufacturing apparatus comprises at least one nozzle facing a conduit and extending transverse to a travel path defined by the conduit. The at least one nozzle is configured to cool molten material within the interior of the conduit with a stream of cooling fluid forced against an exterior of the conduit along a cooling axis extending transverse to the travel path defined by the conduit. In further examples, methods of processing molten material includes cooling the molten material within an interior of a conduit by forcing a stream of cooling fluid against an exterior of the conduit along a cooling axis extending transverse to a travel path defined by the conduit.
Abstract:
The invention relates to the building materials industry, in particular to devices for continuous glass production. The aim of said invention is to ensure symmetrical repartition of batch piles on the sides of a glass-melting furnace and a required degree of cooling. The invention makes it possible to improve the quality of produced molten glass and the products manufactured therefrom and to prolong the service life of the glass-melting furnace by reducing the corrosion of the lateral walls thereof. The inventive glass-melting tank furnace comprises a batch charger, a doghouse, melting and working tanks, a main water-cooled tubular element embodied in such a way that it is possible to adjust the degree of extension thereof into the melting tank and the degree of deepening into molten glass. Said tubular element is embodied in the form of Z and arranged horizontally along the doghouse and the melting area of the furnace, and vertically with respect to the end wall of the doghouse between the batch chargers. The novelty of the invention lies in the additional water-cooled element, which is embodied in such a way that it is floating and whose degree of extension into a melting tank which is arranged above the main water-cooled element can be adjusted, said additional element having a configuration equal to the configuration of the main element.
Abstract:
Methods of processing molten material comprising the step (I) of flowing molten material through an interior of a conduit (137) from a first station (131) to a second station (133) of a glass manufacturing apparatus and the step (II) of cooling the molten material within the interior of the conduit by passing a cooling fluid along an exterior of the conduit. The method further includes the step (III) of directing a travel path of the cooling fluid toward a vertical plane (319) passing through the conduit. In further examples, a glass manufacturing apparatus comprises a first station, a second station, and a conduit (137) configured to provide a travel path for molten material traveling from the first station to the second station. The glass manufacturing apparatus further comprises at least one baffle (323) configured to direct a travel path of cooling fluid toward a vertical plane (319) passing through the conduit.