Ppg Industries, Inc.

Gary N Hughes

Donald P Michelotti

Henry C Goode

Cletus N Welch

George A Pecoraro

Wayne H Gonzalez

Francis A Radecki

Steven H Anderson

A multilayered, cooled metal lid for a heating vessel has a main support plate fabricated from low carbon steel and a chromium steel overlay that is exposed to the hot interior portions of the vessel. The chromium steel overlay has a chromium content by weight of approximately 10 to 25 percent.

Lid construction for a heating vessel and method of use

A pulverulent batch stream is fed into a liquefying vessel by means of an angled feed tube so as to direct the stream tangentially onto side wall portions. The tube may be rotated so as to change the location onto which the batch stream is impinged.

Glass batch feed arrangement with directional adjustability

In an arrangement for preheating and liquefying glass batch materials or the like, the material is transferred from the preheater to the liquefying vessel by conveyor means that isolates batch material from exhaust gas and permits feeding of the batch material to selected regions of the liquefying vessel.

Glass batch transfer arrangements between preheating stage and

In a method and apparatus for liquefying material such as glass batch, primary thermal protection for the vessel is provided by a lining of the batch material, with secondary protection being provided by a partial refractory lining on the interior of the vessel in regions where the primary protection is irregular.

Ablation melting with composite lining

In a method and apparatus for liquefying material such as glass batch, primary thermal protection for the vessel is provided by a lining of the batch material, with secondary protection being provided by forced cooling of a minor portion of the vessel in regions and at times when the primary protection is irregular.

Ablation melting with thermal protection

Discloses a cathode having a porous surface prepared by electro arc spray metallization of two wires of a leachable metal and a catalytic metal onto a substrate, and removal of the leachable metal. Also discloses method of preparing the cathode, and an electrolytic process using the cathode.

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Pittsburgh, PA, United States of America

Gary N Hughes