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6807220 |
Retention mechanism for heating coil of high temperature diffusion furnace
A heating assembly for use in an electric furnace includes a helical heating element encircled by thermal insulation, and rows of spacers for keeping turns of the heating element spaced apart by...
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6160836 |
Electro-smokeless extraction/recovery system
An electro-smokeless extraction/recovery system for converting shredded scrap tires to carbon black and steel and fluid discharge of oil, gas and solvent chemicals. A reaction vessel is formed with...
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6144688 |
Heat furnace having complimentary electric heating
A furnace having a combustion chamber, a fuel inlet for the combustion chamber, an electric heater operatively coupled with the combustion chamber, an electric generator coupled to the electric...
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6061384 |
Process and apparatus for the production of activated carbon
An improved process and apparatus for the production and reactivation of activated carbon comprising the passing of a substrate through one or more zones defined by electrodes. Electrical energy...
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6061383 |
Method and apparatus for tuning polychlorinated biphenyl to harmless
The present invention reduces generation of harmful substances through processing at lower cost for facilities and processing. According to the present invention, polychlorinated biphenyl and...
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6038247 |
Graphitizing electric furnace
A carbon powder inlet and a graphite powder collecting are oppositely arrange on a furnace body. At least a pair of electrodes are oppositely arranged in the furnace body with respect to a...
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5883919 |
Diffusion furnace system for preventing gas leakage
A furnace system for preventing gas leakage is disclosed. The furnace system includes a bottom board for holding a furnace tube. A gas injection device is connected to the furnace tube at a first...
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4425092 |
System for burning fine-grained material, particularly for the manufacture of cement clinkers
The invention relates to a method for burning fine-grain material, particularly for the manufacture of cement clinker from cement raw meal. The material is thermally treated in a multi-stage...
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4406618 |
Method of operating continuous heat treatment furnace for metal strip coils
A method of operating a continuous heat treatment furnace for metal strip coils includes steps of enclosing them in muffles in the furnace supplied with an atmosphere gas containing a combustible...
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4294603 |
Glass forehearth construction
An electrically heated and/or gas heated forehearth channel has a heat conductive refractory roof structure with arch blocks supported from the sides of the channel on side blocks, some of which...
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4248408 |
Method and apparatus for reducing particulate iron oxide to molten iron with solid reductant and oxy-fuel burners
A method and apparatus for reducing particulate iron oxide to molten iron utilizing solid carbonaceous fuel as reductant in a shaft type reducing furnace, in which a furnace burden is formed of a...
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4124199 |
Process and apparatus for case hardening of ferrous metal work pieces
A process and apparatus for case hardening of ferrous metal work pieces is described in which the work pieces to be processed are placed inside a metal vacuum chamber which is evacuated with a...
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4113977 |
Preheating system with gas recirculation
Scrap metal is preheated by electrical radiant heating means. Volatiles driven off from the metal are mixed with air and are blown through conduits which constitute the electrical radiant heating...
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4093816 |
Furnace heating apparatus
A radiantly heated furnace is provided with a heating arrangement capable of generating heat from two different sources of energy. The arrangement includes a thin-walled tube extending within the...
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4029489 |
Method of and apparatus for melting of glass
A glass melting furnace in which glass can be heated by sources below its upper surface, as electrically by Joule effect, and by means above its upper surface, as by fossil fuel firing or by heat...
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3709283 |
MULTIPLE ELECTRODE ELECTROSLAG CASTING APPARATUS HAVING CURRENT EQUALIZER
In an electroslag remelting installation, a pair of consumable electrodes are immersed into molten slag bath in a mold for forming an ingot. AC power is applied between the electrodes to cause AC...
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3652426 |
PROCESS AND APPARATUS FOR REMOVAL OF VOLATILE MATTER BY ELECTRICAL RESISTANCE HEATING
Volatile matter can be removed from material containing volatile matter removable by heat, e.g., coal and coke by delivering the material to a hearth so as to form a bed, touching the bed with...
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3571476 |
HEATING ELEMENT AND ELECTRIC FURNACE EQUIPPED WITH SUCH AN ELEMENT
An electric furnace comprising a heating element and a preheating element wherein the heating element is suspended within the preheating element the suspension means preventing direct contact...
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3702182 |
MELTING OF IRON
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3290031 |
Smelting-furnace, particularly for the production of steel
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3198619 |
Tubular forehearth for glass furnace
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2817191 |
Furnace for the manufacture of colored glass
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