Abstract: The pitch compositions taught herein, upon carbonization, result in relatively oxidation-resistant carbon bodies. The compositions comprise pitch containing therein small quantities of fire retardant-like compositions having afterglow-inhibiting properties and which comprise halogenated organic compounds.

Abstract: A cold ramming mix suitable for ramming of alumina reduction cell cathode seams at ambient temperature comprising:(A) a solid portion comprising:(I) from about 30 to about 60 weight percent of coarse calcined anthracite;(II) from about 50 to about 30 weight percent of anthracite dust; and(III) from about 1 to about 10 weight percent graphite dust;(B) from about 5 to about 15 weight percent based on the weight of the solid portion of a binder pitch; and(C) from about 5 to about 10 weight percent based on the weight of the solid portion, of a heavy petroleum distillate oil having a 95% distillation range of between about 370.degree. and 540.degree. C.A method for producing such a mix comprising blending A and B to provide a homogeneous mixture and subsequently blending in C under conditions which assure that the pitch binder is not dissolved in the oil of C is also described.

Abstract: A refractory gun mix contains from 1 to 5% alkali metal phosphate, for example monosodium phosphate, sodium tripolyphosphate, or a long chain glassy polyphosphate, from 0.5 to 5% hydrated aluminum sulfate (e.g., Al.sub.2 (SO.sub.4).sub.3.14H.sub.2 O), from 0.5 to 5% bentonite, and up to 10% pitch, preferably hard pitch, the balance being sized refractory grain, preferably MgO-containing and/or CaO-containing grain such as periclase, chrome ore, and/or dolomite. In a preferred embodiment, the alkali metal phosphate contributes three atoms of phosphorous for each atom of aluminum contributed by the aluminum sulfate.

Abstract: An asphalt base stock comprising a solvent refined asphalt having a penetration less than 25 and low ductility mixed with an asphalt cement. The base stock has a low penetration, 25-45, but unexpected high ductility, 150+. The base stock is especially suited for emulsification. When mixed with soils and aggregates, as for road surfaces, the stabilized product exhibits a significant increase in bearing strength over comparable asphalt-emulsion pavements and hot-mix asphalt pavements.

Abstract: A mix suitable for room temperature application which, on baking, forms a liquid-tight, electrically conductive seam between adjacent carbon blocks in an electrolytic cell for producing aluminum. The seam mix comprises carbon aggregate calcined to contain less than about 1.5% volatile matter, coal tar pitch or petroleum pitch binder, and an aromatic hydrocarbon solvent. A preferred composition of the seam mix has been found to exhibit less than two percent shrinkage upon heating to 950.degree. C.

Abstract: A sprayable undercoating composition comprising a homogenous mixture of leather dust, water, neutralizer for the acidity of the leather dust, clay-based gellant, polar dispersant, organic rust inhibitor, and solubilized asphalt containing volatile solvent.

Abstract: A carbonaceous paste is disclosed which is used at ambient temperature without need for prior heating. The paste contains: at least 70% of calcined carbonaceous material; a low-temperature plasticizing agent such as molasses, a sugar, an alginate or a lignosulfonate; and a high-temperature plasticizing agent such as a dry pitch. The paste is used in particular for luting aluminum electrolysis cells.

Abstract: A mix suitable for use as seam mix in an electrolytic cell for producing aluminum, of the type which has conventionally consisted essentially of carbon aggregate and binder and which has been heated for the purpose of obtaining sufficient workability to enable a tamping operation to product liquid-tight and electrically conductive seams, wherein the improvement includes the presence of a solvent having a boiling point of from 150.degree. to 350.degree. C. and consisting essentially of at least one compound selected from the group consisting of aromatic hydrocarbons having only saturated side chains, the solvent being present in an amount sufficient to render the mix capable of being tamped without the application of heat.

Abstract: Methods of modifying the viscosity of bituminous materials in which a fluoro or chlorofluoro derivative of a lower alkane is mixed therewith, and processes involving and employing products so modified.

Abstract: This invention provides a process for producing road paving asphalt compositions which involves heating an admixture of coal tar and fluidized catalytic cracking syntower bottoms until a homogeneous solubilized product with asphaltic properties is formed. The preferred asphalt compositions have a quantity of scrap rubber incorporated and dissolved therein.

Abstract: A method of preparing carbon articles including the steps of mixing binder and carbon aggregate, forming the resulting mixture into an article, measuring the slump of the article at least to hundredths of an inch following the forming and prior to baking, and, if necessary, changing the relative proportions of binder and carbon aggregate in subsequent executions of the mixing step to yield a target amount of slump.

Abstract: A patch material for filling and sealing chuck holes in pavements comprises iron scale and aluminum particles, ground ceramic brick and/or blast furnace slag and pitch, the iron scale and aluminum particles producing metal when ignited and suitable temperatures to form a molten liquid containing the other materials.

Abstract: A coke oven system is provided having a coke oven preferably with pipeline charging for converting coal into coke. Carryover fines are collected from the coke oven and preferably a preheater therefor, and then agitated by agitator means and the collected carryover fines thereby agglomerated. Preferably, the carryover fines are first mixed with water to form an aqueous mixture, and then agglomerated. The agglomerated carryover fines are then preferably separated from the aqueous mixture by separated means. The agglomerated carryover fines are preferably conditioned in dryer means and recirculated to the coke oven preferably through a preheater.

Abstract: The invention relates to the upgrading of coal for coking purposes and improved cokes resulting from such upgrading. Pitch obtained as a by-product of pressure-gasification (Lurgi-process) is used as an additive either alone or blended with SRC. The additive is employed in amounts of 1% and 50% by mass, preferably 5 to 15% of the total blend. The additive preferably has an R-and-B softening temperature above 80.degree. C. The additive can be subjected to various treatments, e.g. heating in presence of hydrogen, to improve its characteristics.

Abstract: Crystalloidal pitch is obtained by subjecting solid pitch particles measuring not more than 5 mm in cross-sectional equivalent diameter to a treatment to prevent cohesion and subsequently bringing the cohesion-proof solid pitch particles into contact with a non-oxidative gas at temperatures of from 350.degree. C to 550.degree. C while maintaining a gas flow rate sufficient to provide a suspension wherein the gas constitutes at least 30% by volume. The crystalloid pitch is useful as a precursor for various carbon products.

Abstract: Carbonaceous material such as carbon powder is coated with a carbonizable nder in a continuous process in which the carbon particles and the binder, preferably together with a solvent, are introduced continuously into a vessel in which a continuous stream of a liquid vehicle in which the binder is insoluble is likewise introduced. The coated particles are then separated from the liquid phase by decantation or filtration.

Abstract: Disclosed is a pitch-impregnated fiber pipe having a surface coating of pitch containing aluminum pigment. The method of manufacture comprises suspending unimpregnated, conventionally manufactured porous fiber pipe tubes in a suspension of aluminum powder in the liquid pitch and forcing the pitch into the pores and interstices of the fiber pipe tubes.

Abstract: An improved process for producing pitch which is transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, the mesophase content of the pitch is formed while agitating the pitch so as to produce a homogeneous emulsion of the immiscible mesophase and non-mesophase portions of the pitch. Mesophase pitches prepared in this manner have been found to possess a lesser amount of high molecular weight molecules in the mesophase portion of the pitch and a lesser amount of low molecular weight molecules in the non-mesophase portion of the pitch, and thus a smaller differential between the average molecular weights of the mesophase and non-mesophase portions of the pitch, than mesophase pitches having the same mesophase content which have been prepared in the absence of such agitation.

Abstract: Fireproof stamping mass containing pyrophillite, silicon carbide, plastic clay, quarzite, a carbonaceous bonding agent and water.

Abstract: Carbonaceous material such as carbon powder is coated with a carbonizable nder in a continuous process in which the carbon particles and the binder, preferably together with a solvent, are introduced continuously into a vessel in which a continuous stream of a liquid vehicle in which the binder is insoluble is likewise introduced. The coated particles are then separated from the liquid phase by decantation or filtration.

Abstract: A paving composition comprising asphalt and micro-granular coal which are uniformly combined integrally with each other without thermal decomposition of said coal and a method for producing a paving composition which comprises triturating a mixture of asphalt and coal at a temperature below the thermal decomposition point of the coal thereby to reduce the diameter of the resulting micro-granular coal to 1 to 100.mu. and, at the same time, to achieve the uniform integral combination of asphalt and coal. Thereby, there is provided a paving composition which is excellent in thermal stability, weather resistance, adhesive property, sticking strength, viscoelasticity and workability. Moreover, besides the main components, asphalt and coal, various modifying agents or additives may be further incorporated so that the properties of the paving composition can be further improved.

Abstract: A locking pitch composition for depositing within the pitch reservoir of graphite nipples of the type including such voids. The composition is a heat-foamable, thermoplastic material including particulate pitch in a lignin sulfonate-based binder. The composition may be deposited into the reservoirs of the nipples by direct extrusion at ambient temperatures. When a nipple thus prepared is utilized in an electrode joint assembly, the high temperatures provided at the electrode joint foam the composition to expand it into adjacent thread spaces at the joint. Continued heating then carbonizes the composition to lock the joint.

Abstract: An improved creosote wood preservative that has a light color and that forms a non-sticky crud deposit is prepared from a coal tar creosote. The coal tar creosote is reacted with one or more of the following groups of neutral compounds: paraformaldehyde, trioxane; or nitrobenzene, nitrotoluene, nitroxylene, tris (hydroxymethyl) nitromethane; or aluminum, zinc or sulfur, to produce a reacted creosote. This reacted creosote is distilled to yield a distillate, which is the improved creosote wood preservative, and a pitch residue.