Process for producing electrodes from carbonaceous particles and a boron source

Patent · Tue Sep 13 04:00:00 EDT 1988

OSTI ID:6729098

Sara, R V

A method is described of making an electric arc furnace graphite electrode comprising: (a) calcining a carbonaceous material selected form the group consisting of anthracite coal, bituminous coal, lignites, and nos. 2 and 3 cokes; (b) mixing the calcined carbonaceous material with pitch, a lubricant, and a boron source selected from the group consisting of elemental boron, boron carbide, silicon tetraboride, and iron boride, in an amount such that the boron content is from about 0.1 to about 5.0 percent by weight of the graphite electrode to form a mixture; (c) extruding the mixture into an electrode form; (d) and graphitizing the electrode form to provide a graphite electrode.

• Assignee: Union Carbide Corp., Danbury, CT
• Patent Number(s): US 4770825
• OSTI ID: 6729098
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
ANTHRACITE
ARC FURNACES
BITUMINOUS COAL
BLACK COAL
BORIDES
BORON
BORON CARBIDES
BORON COMPOUNDS
BROWN COAL
CALCINATION
CARBIDES
CARBON
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL
COKE
DECOMPOSITION
ELECTRIC FURNACES
ELECTRODES
ELEMENTAL MINERALS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FURNACES
GRAPHITE
IRON BORIDES
IRON COMPOUNDS
LIGNITE
LUBRICANTS
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PITCHES
PYROLYSIS
SEMIMETALS
SILICON BORIDES
SILICON COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS