Saint-gobain Glass France

Saint-gobain Vitrage

Saint Gobain Isover

Vetrotech Saint-gobain (international) Ag

Pierre Jeanvoine

Tanguy Massart

Anne Berthereau

Laurent Teyssedre

Dominique Sachot

Biagio Palmieri

Raymond Moreau

Remi Jacques

Arnaud Le Verge

Michel Lismonde

Jacques Vieslet

Roger Gobert

Claude M Morin

David Galley

Stephane Maugendre

Ramon Rodriguez Cuartas

Horst Siedel

Melanie Rattier

Armando Rodriguez Rodriguez

Juan-Andres Nunez Hernandez

Rémi Jacques

Stéphane Maugendre

The invention relates to a process and to an installation for preparing a final glass, comprising a main furnace with electrodes and/or overhead burners, which is fed with main batch materials generating a main molten glass, and a submerged-combustion auxiliary furnace, said auxiliary furnace being fed with auxiliary batch materials, the auxiliary molten glass feeding the main furnace toward its upstream end in the first third of its length, the auxiliary glass being substantially of the same composition as the main glass. The downstream zone of the main furnace is thus used to remove both gases coming from the main glass and gases coming from the auxiliary glass, in order to finish melting the batch stones and impurities contained in the auxiliary glass and to homogenize the two glass streams from their redox standpoint, when this is necessary.

Glass-melting installation comprising two furnaces

The invention relates to a process for manufacturing a combustible gas having a lower heating value of at least 1 MJ/Nm, comprising the reaction of an oxidizing gas comprising steam or oxygen or COwith an organic material in contact with a molten silicate bath held in a tank and comprising a heat supply into the molten silicate, said process operating continuously, silicate being regularly drained from the tank and vitrifiable materials being regularly introduced in order to feed the silicate bath. The heat supply is preferably of the submerged combustion type. The invention also relates to a continuous industrial manufacturing process comprising continuous production, in an industrial production unit comprising a gaseous fuel burner that generates combustion gases; continuous production of steam in a boiler; and continuous production of combustible gas in a unit for producing combustible gas comprising the reaction of an oxidizing gas comprising steam with an organic material, the combustion gases being conveyed to the boiler in order to vaporize water and produce steam, the steam produced by the boiler being conveyed to the unit for producing combustible gas in order to react with the organic material, the combustible gas being conveyed to the industrial production unit in order to be burnt therein as a gaseous fuel.

Gasification of combustible organic materials

The invention relates to a process for manufacturing compounds based on one or more silicates of alkali metals and/or of alkaline-earth metals, optionally in the form of mixed silicates that combine at least two of these elements, said process involving:

Process for preparing batch materials for the manufacture of glass

The invention relates to a furnace for the continuous melting of a composition comprising silica, the said furnace comprising at least two tanks in series, said tanks each comprising at least one burner submerged in the melt. The invention also relates to the process for manufacturing compositions comprising silica using the furnace, the silica and the fluxing agent for the silica being introduced into the first tank. The invention makes it possible to produce glass color frits, tile frits and enamel with a high productivity, low temperatures and short transition times.

Furnace with series-arranged baths for producing glass compounds having a low degree of unmelted material

The invention relates to a glass composition of silica-soda-lime type colored blue which comprises the coloring agents below in a content varying within the following limits, by weight: the glass exhibiting a redox factor of less than 0.35, a dominant wavelength &#x3bb;of between 485 and 489 nm, an excitation purity of less than 13% and a selectivity at least equal to 1.1 under a thickness of between 3 and 5 mm. It also relates to the glass sheet obtained from the abovementioned composition, said sheet being intended in particular to form an automobile window or for the construction industry.

Blue glass composition intended for the manufacture of windows

A process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials (). The refining of the vitrifiable materials after melting comprises at least one step of subjecting them to subatmospheric pressure while centrifuging.

Method and device for melting and refining materials capable of being vitrified

The invention relates to a process for preparing a silicate of an element chosen from alkali metals, alkaline-earth metals or rare earths, comprising a reaction between silica and a sulfate of said element in a reactor equipped with at least one submerged burner within a molten mass, said submerged burner being fed with a gas containing oxygen, an excess of fuel/reducing agent being introduced into the reactor relative to the oxygen effectively consumed. The process allows the reaction to be carried out satisfactorily and at relatively low temperature.

Preparation of silicate or glass in a furnace with burners immersed in a reducing medium

The subject of the invention is a process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the said fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials (). The refining of the vitrifiable materials after melting takes place at least partly in the form of a 'thin layer'. The invention also relates to the device for implementing the process and to its applications.

The subject of the invention is a gray glass composition of the soda-lime-silicate type having an overall light transmission under illuminant A (T) greater than 67% for a glass thickness equal to 3.85 mm, which comprises the constituents below within the following limits by weight: and the coloring agents below within the following limits by weight: 

Grey glass composition for production of windows

The subject of the invention is a process for manufacturing compounds based on one or more silicates of alkali metals, such as Na and K and/or alkaline earth metals such as Ca, Mg, and/or on rare earths, such as Ce, optionally in the form of mixed silicates which combine alkaline-earth metals, such as Ca, with the alkali metal(s) and the rare earth(s), by conversion of silica and of halides, especially of one or more chlorides, or sulfate or nitrate, of the said alkali metals and/or of the said rare earths and/or of the said alkaline-earth metals, such as NaCl, KCl or CeCl. The heat needed for the conversion is supplied, at least partly, by one or more submerged burners. The subject of the invention is also an apparatus for carrying out the process and for its use.

Method for preparing raw materials for glass-making

A subject matter of the invention is a process for destroying waste and/or rendering it inert, in particular industrial, biological or farm-produce waste: use is made of a reactor provided with heating means comprising at least one submerged burner, and said reactor is fed with at least partially vitrifiable materials, which are heated with said heating means in order to form and to maintain, in the reactor, an at least partially liquid/foamy phase at at least 800&#xb0; C. Then said waste is introduced into said phase in order for its organic components to be decomposed therein by combustion and/or its inorganic components to be melted or coated in said phase. Finally, said phase, charged with molten/coated waste and/or with combustion products from said waste, is withdrawn from the reactor.

Method for destroying and/or inerting waste

The subject of the invention is a process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the said fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials ( ). The refining of the vitrifiable materials after melting comprises at least one step of subjecting them to subatmospheric pressure. The invention also relates to the device for implementing the process and to its applications.

Process for melting and refining vitrifiable materials

A process for melting and refining vitrifiable materials. In this method all or part of the thermal energy necessary for melting the vitrifiable materials is supplied by the combustion of fossil fuel with at least one oxidizer gas, the fuel, gas or the gaseous products resulting from their combustion are injected below the level of the mass of the vitrifiable materials. The refining of the vitrifiable materials after melting includes at least the step of subjecting them to subatmospheric pressure.

Growing community of inventors

Poissy, France

Pierre Jeanvoine