Abstract: A red lead primer paint having excellent wetting and penetrating characteristics, which when applied to the surface of ferrous metals forms a tough, resilient, adherent coating characterized by having excellent weathering and corrosion inhibiting properties, is comprised of a red lead pigment well dispersed in a binder of raw linseed oil and long oil alkyd resin. The red lead primer paint has a pigment volume concentration (PVC) within the range of about 25% to about 30%. The concentration of the red lead pigment in the primer paint is in the range of 0.25 to 2.2 pounds per gallon (29.95 to 263.56 grams per liter) of solids. The binder is comprised of raw linseed oil and a long oil alkyd resin mixed in a ratio within the range of 1:1 to 2:1.

Abstract: An improved acid halogen electrotinning bath composition for depositing a smooth, coherent layer of tin onto a steel substrate contains about 0.10 to 4.0 grams per liter of solution of at least one oxidation inhibiting agent comprising an organic ring compound which has a radical group such as --NH.sub.2 or --NO.sub.2 in the ortho or para position, for example para-aminoacetanilide and para-nitroacetanilide. Organic ring compounds, para-aminophenylacetic acid and 4-aminoantipyrine may also be added to the bath together with sodium ferrocyanide to inhibit the oxidation of the bivalent tin ions.

Abstract: A method for preparing moist iron-bearing fume for use in steelmaking furnaces to recover the iron contained in the fume. The fume is thickened, substantially instantaneously dried, impact-fractured and balled. Moisture is added to the fume on the balling device to bind the fume to produce "green" balls which resist degradation during handling and transport. The green balls have sufficient strength to resist degradation during handling prior to and during charging to steelmaking furnaces.

Abstract: A method for preparing strong, stable "green" balls of dry-collected iron-bearing fume, which contains not less than about 8% combined amount of lime (CaO) and magnesia (MgO). The fume is charged to a balling device where there is added to the fume a quantity of water equal to both the stoichiometric amount required to completely hydrate such lime and magnesia and to produce in the green balls a water content between about 7% - 12%. The residence time of the fume on the balling device is not less than about 8 minutes.

Abstract: Basic refractory shapes in selected critical wear areas of a working lining in a basic oxygen furnace are protected from spalling due to thermal shock during "burn-in" and initial operation of the working lining and during the early part of a furnace campaign. A plurality of securing means comprising relatively thin, elongated, flat, generally rectangular anchors are positioned in selected joints in the working lining during installation. The anchors extend a distance beyond the hot faces of the working lining. A reticulated reinforcing means comprising a metallic grid is fastened to the anchors in spaced relationship to the hot faces. A layer of a pulverulent basic refractory material having a thickness sufficient to cover the anchors and metallic grid is sprayed over the working lining in the critical wear areas. The layer of sprayed material provides an effective insulation over the basic refractory shapes in the critical wear areas during "burn-in" of the working lining in the furnace.

Abstract: Method for hot-rolling carbon and alloy steels in a continuous hot-rolling mill including spraying water onto the surface of the steels at selected locations in the continuous hot-rolling mill during hot-rolling of the steels in order to control the temperature of the steels. The hot-rolled steels off-the-mill have an integrated mean temperature of not more than about 1750.degree. F. and can have a surface temperature of about 1700.degree. F. The as-rolled steel products produced by the method have uniform metallurgical characteristics. The scale which forms on the surface of the steels during air-cooling to ambient temperature is uniform, smooth, fine-textured and relatively thin.

Abstract: A process for producing a swirl-free, indent-free foamed thermoplastic structural article in which water is utilized as a foaming agent. Water and a melted thermoplastic resin are mixed together in an extruder to form a pressurized foamable mixture. The foamable mixture from the extruder is collected in an accumulator and from there is delivered to a cavity in a mold in a suitable clamping device. The pressure in the cavity is lower than the pressure of the foamable mixture in the accumulator or extruder therefore when the foamable mixture enters the cavity the foaming agent is released and the thermoplastic resin is frothed and expands to completely fill the cavity. The melted foamed thermoplastic resin cools in the mold and solidifies to form a foamed thermoplastic structural article. The quantity of water introduced into the extruder is between about 0.1 weight percent to about 0.5 weight percent of the thermoplastic resin charge in the extruder.

Abstract: Kish graphite can be separated from fume in kish graphite-fume mixtures and can be recovered as a clean usable product by screening the kish graphite-fume mixtures to separate the mixtures into a screen overflow and screen underflow. The screen overflow is mixed with a solution of a washing agent and a surface active agent. The mixture is stirred to thoroughly "wet" the surfaces of the kish graphite. The mixture is filtered. The kish graphite is recovered as a filter cake. The effluent which consists of the washing agent, the surface active agent and fume, is passed to waste. The kish graphite retains its integrity through the separation, recovery, and cleaning steps.

Abstract: Hypoeutectoid steels are worked within a temperature range of between the A.sub.1 temperature to 150.degree. F. below the A.sub.1 temperature. The cross-sectional area of the steels is reduced by not less than 60% during working. After working, the steels can be heated to about the A.sub.1 temperature to obtain the optimum hardness and ductility for cold-working.The as-worked structure and the heat treated structure are also described.

Abstract: Method for extracting vanadium-values from vanadium-bearing iron ores and/or iron ore concentrates including mixing the iron ores and/or iron ore concentrates with a calcium containing material, roasting the mix in an oxidizing atmosphere at a temperature for a time to produce calcium vanadates, comminuting the roasted mix and leaching the comminuted roasted mix in an aqueous solution containing carbonate or bicarbonate compounds to produce vanadates which are readily soluble in the aqueous leaching solution and simultaneously producing substantially insoluble calcium carbonate or calcium bicarbonate which remains as part of the undissolved residue containing iron-values. The vanadate-rich aqueous leaching solution is separated from the undissolved residue containing iron-values and treated by known methods to recover the vanadium-values. The undissolved residue can be processed to recover the iron-values.