Owens-corning Fiberglas Corporation

Mark A Propster

Charles M Hohman

Stephen Seng

Charles S Dunn

William L Streicher

Richard K Henry

Subhash S Kithany

Patrick F Aubourg

Lee R Mull

A method and apparatus for preheating particulate glass batch comprises a rotatable drum for mixing batch with heat transfer media in a heat transfer relationship, means for directing the heated batch from the container to a glass melting furnace, means for venting gases and gas-borne particulate matter from the drum, means for separating a selected portion of the particulate matter from the vented gases, and means for directing the separated particulate matter into the glass melting furnace.

Method and apparatus for preheating glass batch

Apparatus and method for the heat processing of granular materials by the counterflow of the granular material and preheated particulate heat exchange media through a processing drum rotatable about an inclined axis. The hot media is imtimately mixed with the granular material internally of the drum to heat the material and to cool the media. Various arrangements are disclosed to recover the heat imparted to the material, or to utilize the media for successive heating operations, or to recover waste heat from other related heat processing operations or to utilize the material as preheated by the media.

Heat processing of particulate material

A melting furnace is disclosed which heats by joule effect to supply molten material of uniform temperature at the floor of the melter. During formation of molten material, an essentially isothermal condition across a given horizontal plane of the body of molten material is established. Spaced apart opposed electrodes and controlled current flow establish these uniform temperatures and allow molten material to be formed directly from the melter without further processing.

Melting furnaces

Apparatus and method for the heat processing of granular materials by the counterflow of the granular material and preheated particulate heat exchange media through a processing drum rotatable about an inclined axis. The hot media is intimately mixed with the granular material internally of the drum to heat the material and to cool the media. Various arrangements are disclosed to recover the heat imparted to the material, or to utilize the media for successive heating operations, or to recover waste heat from other related heat processing operations or to utilize the material as preheated by the media.

Method of heating particulate material with a particulate heating media

A process for cleaning and incinerating the exhaust gases from a manufacturing process or a curing oven is disclosed. The invention uses heat transfer media and additional hot gases to scrub organic or condensate from the gases. The gases typically are from the curing of binder compositions or phenolic resins. The binders generally have been applied to a collected mat of glass fibers.

Method for treating exhaust gases

A process and apparatus for improving the removal of gaseous inclusions from molten materials is disclosed. The inclusions, e.g., seeds or bubbles, are removed by applying vibrations to a restricted zone for discharging molten material from the melting tank. The seeds are slowed during a 'pile up' in the restricted channel and are more easily brought to the surface of the molten material.

Apparatus and method for removing gaseous inclusions from molten material

A method of recovering heat from furnace flue gas which comprises passing the hot gases into contact with high specific heat media and the media into contact successively, with combustion gases and glass batch.

Recuperation of heat absorbent media to preheat combustion gases and

A gas to solid contacting apparatus comprising a chamber, at least one solid inlet conduit opening into the chamber, at least one gas inlet conduit opening into the chamber, the gas inlet and outlet comprising superimposed conduits.

Gas-solid counterflow vessel

A method of removing coatings from glass fibers in which the fibers are introduced into a bed fluidized by a gas at elevated temperatures, the gas converting the coatings to substances which leave the bed with the gases.

Scrap glass recovery

A method for preheating glass batch is disclosed. Media heated with furnace exhaust gases is used to preheat the glass batch. This invention includes a way to clean furnace exhaust gas condensate from the surface of the media.

Method of preheating glass batch

A method of reclaiming chemically coated glass scrap is disclosed. The scrap is introduced into the oxidizing atmosphere of a hydrocarbon-fuel fired glass melting furnace. Some of the glass is melted with the unmelted portion being melted with the glass batch as it moves through the furnace.

Glass fiber scrap reclamation

A process and apparatus for preheating glass batch ingredients is disclosed. The invention uses a heat exchange method that preferably employs furnace exhaust gases. The heated batch then is fed to a glass melting furnace.

Preheating glass batch

A method and apparatus for preheating particulate glass batch comprises a rotatable drum for mixing the batch with particulate heat transfer media in a heat transfer relationship where the batch is separated from the media in a media exit vestibule having a screen through which the batch passes and having compartments mounted for rotation about the axis of the drum for lifting the separated batch to the batch inlet conduit where it is directed back into the drum.

Apparatus for predrying and preheating pellets involving an oscillating grate extending angularly downward across the predrying section and discharging into a preheating section. The grate is substantially equal in width to the width of the predrying section so that the gas flow area through the predrying section is substantially less than the gas flow area through the preheating section. Further, the grate includes a plurality of spaced members positioned to form a gas flow velocity therethrough greater than the gas flow velocity through the preheating section.

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Gahanna, OH, United States of America

Mark A Propster