Abstract:
Process for thermoprocessing a non-gaseous charge in a furnace (13), whereby) carbon dioxide released by the charge during said thermoprocessing, a non-zero fraction (7) of the flue gas (6) which contains said released carbon dioxide being combined with hydrogen (3) and subjected to a rWGS reaction with said hydrogen (3), whereafter the reaction product (9) of the rWGS reaction is supplied to the furnace (13) as fuel.
Abstract:
Apparatuses for interfacing with an electrode provided with a melting furnace including a vessel and an electrode. In some embodiments, a support assembly (50) supports the electrode outside of the vessel, and includes a cart (102) or similar apparatus that permits or facilitates selective vertical movement of the electrode and selective transverse movement of the electrode. In some embodiments, a push assembly (52) interfaces with a rear face of the electrode outside of the vessel, and is operable to apply a pushing force onto the rear face. The push assembly can include one or more tracks (e.g., threaded screw) that supports a body between opposing arms of a fixed frame. The body can translate along the tracks to apply a pushing force onto the electrode.
Abstract:
Disclosed herein are glass manufacturing methods, the methods including delivering a molten glass to a melting vessel including at least one electrode comprising MoO 3 , applying an electric current to the at least one electrode, contacting the batch materials with the at least one electrode for a time period sufficient to reduce an oxidation state of at least one tramp metal present in the batch materials, and melting the batch materials to produce a molten glass. Methods for modifying a glass composition are also disclosed herein, as well as glass articles produced by these methods.
Abstract:
A liner system for in-container vitrification that can withstand high temperature is critical to the overall in-container vitrification process. A treatment vessel comprising a treatment vessel having an inner and outer wall wherein the inner wall defines a void therein. An insulation layer (16) is deposited inside the void so as to create an annulus between the inner wall of the treatment vessel and the insulation layer (16) to allow air or liquid to flow around the melt to facilitate the dissipation of the heat from the entire melting process. Next a layer of refractory material (18) best suited to inhibit the transmission of heat from the melt (17) is deposited within the insulation layer (16) and is in thermal contact with the melt material (17). More specifically, commercial "roll-off boxes" lined with insulating layer (16) comprising carbon based materials, insulation board, graphite based materials and any combination thereof in combination with refractory materials such as sand, bricks, concrete and combinations thereof are provided in this invention.
Abstract:
A process for melting material to be treated includes placing material to be treated in a container that may include an insulating lining, heating the material to be treated and melting the material to be treated, preferably allowing the melted material to cool to form a vitrified and/or crystalline mass, and disposing of the mass. The mass is either disposed while contained in container or removed from container after cooling and disposed. Insulating lining may comprise one or more layers of a thermal insulating material, one or more layers of refractory material, or a combination thereof. The material to be treated may be heated by placing at least two electrodes in the material to be treated and passing a current between the electrodes, or alternatively, by placing at least one heating element in the material to be treated and passing heat into the material to be treated.
Abstract:
The device for producing a glass melt from a glass batch has a melting chamber (1), peripheral walls (1.1 - 1.4) and a floor (1.5); a delivery channel (2) which is located under the floor (1.5) of the melting chamber (1), which is conductively connected to the molten bath (3) by an inlet opening (2.3) and which has an outlet opening (2.4) for the finished melt in the area of a peripheral wall (1.1) of the melting chamber (1); and at least one heating device for heating the melting bath (3). The invention is characterised by the following features: the inlet opening (2.3) of the delivery channel (2) is located in a central area of the floor (1.5) of the melting chamber (1); the delivery channel (2) has a cover (2.2) which is located at least approximately at the height of the floor (1.5) of the melting chamber (1), or a cover (4) which covers part of the liquid level (3.1) of the melting bath (3); or is characterised by an additional heating element (5) in the area of the delivery channel (2) or is characterised by a heated vault (20) in the area above the delivery channel (2) and the outlet opening, for forming a blank glass surface (21) where no glass batch is introduced.
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:
The invention concerns an electric melting method by Joule effect of a mixture capable of being vitrified, implemented by using at least two electrodes, at least one of said electrodes being an electrode immersed (8) over a great length. The invention is characterised in that the method is implemented using said immersed electrode temperature surface, in the immersed part thereof, maintained at the metal glass transition temperature. The invention also concerns novel electrodes suitable for implementing said method.
Abstract:
A method of melting solid materials while controlling melt shape, without the expenditure of energy to melt unwanted quantities of surrounding materials, and an apparatus to effect the method. The method comprises the use of a planar starter path (48) between the electrodes (40) so as to initiate melting and/or vitrification in a plane rather than in a discrete linear path between the electrodes (40). Because melting is initiated along a significant portion of the linear dimension of the electrodes (40), creating a melted zone that is deeper than it is thick, the aspect ratio (depth "Y"/width "Z") of the melted mass (138) is greater than 1.0.