Abstract: This invention provides compacted carbon that is useful in the electrode of an alkali metal/carbon electrochemical cell of improved capacity selected from the group consisting of:(a) coke having the following properties:(i) an x-ray density of at least 2.00 grams per cubic centimeters,(ii) a closed porosity of no greater than 5%, and(iii) an open porosity of no greater than 47%; and(b) graphite having the following properties:(i) an x-ray density of at least 2.20 grams per cubic centimeters,(ii) a closed porosity of no greater than 5%, and(iii) an open porosity of no greater than 25%.This invention also relates to an electrode for an alkali metal/carbon electrochemical cell comprising compacted carbon as described above and a binder.

Abstract: Two component spray cooled roof for electric furnaces to accommodate off-center electrode positions.

Abstract: A sulfur-containing active carbon, which has a high storage capacity for methane, is produced from inexpensive aromatic precursors, such as chrysene, coal tar and petroleum oils, tars and pitches, by reacting the aromatic precursor with elemental sulfur, followed by carbonization of the sulfur-containing reaction product in an inert atmosphere at an elevated temperature to produce a sulfur-containing carbon. The carbon is then further activated to develop a surface area of at least 600 m.sup.2 /g by heating in an oxidizing atmosphere at an elevated temperature.

Abstract: This invention relates to an electrode for a coke/alkali metal electrochemical cell comprising:(a) calcined coke particles:(i) that contain at least 0.5 weight percent of nitrogen heteroatoms and at least 1.0 weight percent sulfur heteroatoms, and(ii) that have an average particle size from 2 microns to 40 microns with essentially no particles being greater than 50 microns.(b) a binderThis invention also relates to a coke/alkali metal electrochemical cell comprising:(a) an electrode as described above,(b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrically conductive salt, and(c) a counterelectrode.

Abstract: A furnace apparatus and method for the lengthwise graphitization (LWG) of carbon bodies are provided which utilize U-shaped metal furnace sections mounted on stationary rib supports to contain carbon electrode bodies and surrounding thermally insulating pack material. Vertical flues are provided between parallel rows of U-shaped metal furnace sections to accelerate cooling of graphitized electrode bodies and in a further embodiment water droplets are additionally sprayed on the metal furnace sections.

Abstract: A unitary composite structure having improved flexural strength and a reduced coefficient of thermal expansion comprising a heterogeneous combination of a carbonaceous reinforcing material interbonded with a matrix material, wherein the said matrix material is a poorly graphitizing carbonaceous pitch containing polymerized and cross-linked aromatic components is disclosed. Graphite electrodes comprised of the poorly graphitized pitch matrix material acting as a binder and/or an impregnant are also disclosed. Processes for the preparation of the poorly graphitizing pitch, the composite structure, and particularly the graphite electrodes are disclosed as well.

Abstract: A stable blister free flexible graphite is formed in accordance with the present invention by performing two chemical reactions including a first step of high temperature heat treatment which converts the active carbon surface from hydrophilic to hydrophobic and generates active surface sites and a second step of exposing the heat treated graphite to a stabilizing reagent for stabilizing the active sites generated by the first step of high temperature heat treatment.

Abstract: Electrode joint for threadably joining two abutting carbon upper and lower electrode sections is provided with a locking pin releasably held in an upper electrode section which when released engages a groove in a lower electrode section.

Abstract: Spray cooled side-wall assembly for an electric arc furnace which includes individual spray cooled segments joined together to form a furnace side-wall. One or more of the segments can be arch-shaped and surround a spray cooled sub-assembly to address conditions of high thermal stress.

Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst, a liquid carbonizable component, and copper particles, which when treated with the catalyst will provide a carbon yield of at least 40% for the liquid component at an elevated baking temperature and possess increased flexural strength at elevated temperatures and reduced electrical resistance.

Abstract: Continuous method for treating a liquid tar containing Q.I. solids to provide a liquid tar product having increased Q.I. concentration and, concurrently, a Q.I. free liquid tar product. The method utilizes cross-flow filter membranes.

Abstract: A pitch based impregnant for a carbon or graphite body and a method of impregnation. The method involves forming a liquid solution of a substantially solids free pitch having a Q.I. of less than 1% dissolved in furfural and containing an acid catalyst with the solution having a viscosity of less than 150 cps at room temperature and heating the impregnated body to between 150.degree.-200.degree. C. until the impregnant is cured.

Abstract: A gasket arrangement is provided for a filter in a pyrotechnic gas generator which includes a compressed sheet formed of a combination of intercalated graphite particles and exfoliated flexible graphite particles.

Abstract: A rotary hearth calciner for treating petroleum cokes with a puffing inhibitor has a horizontal or inwardly sloping hearth floor rotatable around a vertical axis for receiving particles of coke to be calcined and a central opening in the hearth floor for discharging the coke into a soaking pit. A water cooled, refractory covered feed pipe extending downward into the calciner interior has an inlet for connection to a source of petroleum coke puffing inhibitor and an outlet near the edge of the hearth central floor opening for adding the puffing inhibitor to the coke as the coke is discharged from said hearth floor. The feed pipe outlet is approximately at or below the level of the hearth floor to reduce loss of inhibitor in gas flow above the hearth floor. A puffing inhibitor such as sodium carbonate is supplied by a screw feed mechanism to the feed pipe to add the puffing inhibitor at a desired rate for reaction with the coke. The coke is normally maintained in the soaking pit for about 30 minutes at 1200.

Abstract: Method for making a component, graphite component, such as a graphite crucible, for use in the production of silicon crystal growth from molten silicon wherein the graphite component has an outer coated layer of glassy carbon formed from a thermoset organic resin that prevents contamination of the molten silicon by carbon from the graphite component.

Abstract: Seal ring for engine exhaust systems in the form of a composite of flexible graphite and metal mesh with the metal mesh being positioned close to the bearing surface of the seal ring whereby audible emanations from the seal ring during use are avoided.

Abstract: A combination of a spray cooled roof having a central opening, a support member and mast post wherein the roof is provided with an engagement which are detachably engaged to the corresponding engagement affixed to a support arm assembly which extends over a closed part of the roof. The support member is coupled to the mast post which raises, lowers and laterally moves the roof.

Abstract: This invention relates to a fire retardant wooden structural element, such as the web of a wooden joist, a wall panel, exterior or interior siding panel or the like, which is formed of oriented strand board (OSB) having outer layers which contain particles of expandable graphite and a core layer which is free of expandable graphite.

Abstract: Electrode joint for threadably joining two abutting carbon electrode sections is provided with an elongate carbon fastening element which is force fitted into a passage extending from outside of the electrode joint through a portion of the interface contact between the abutting carbon electrode sections.

Abstract: A method of forming an oxidation resistant aluminum coating on a carbon-carbon composite comprising applying a slurry over the carbon-carbon composite, composed of an aluminum intermetallic in a liquid suspending vehicle including a high char yield adhesive thermoplastic and a glassy carbon, distributing aluminum, in elemental form, over the coated surface and reacting the composite and coating in a furnace.