Abstract: A two-chamber furnace for delivering a melt to a casting machine comprises a storage chamber having an inlet device for material to be melted, a removal chamber having an outlet device for removing the melted material, and an intermediate chamber arranged between the storage chamber and the removal chamber, the intermediate chamber communicating with the removal chamber through a balancing port and with the storage chamber by an overflow. A control device controls the level of the melted material in the removal chamber, the control device including a pump for moving the melted material from the storage chamber to the intermediate chamber.

Abstract: (A) A process for forming an oxide film cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion solution comprising an aqueous reaction solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.01 mole per liter of solution to the solubility limit of the cobalt-III hexacoordinated complex; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plated, Zn plated, Zn--Ni plated, and steel. The cobalt-III hexacoordinated complex may be present in the form of Me.sub.m [Co(R).sub.6 ].sub.

Abstract: In-situ removal of material, such as solder paste (12), from openings (26--26) in a stencil (22) is accomplished by imparting a vibrational motion to the stencil. In practice, the stencil (22) may be vibrated by one or more DC solenoids (28--28), each having its plunger (28) in contact with the periphery of the stencil and each excited with AC so that the solenoid plunger undergoes a linear oscillation to vibrate the stencil.

Abstract: A tubular blank made of an age-hardening copper alloy is annealed and quenched; whereupon a mandrel of the final shape and size of the interior cavity of the mold to be made is inserted; whereupon the blank is forced onto the mandrel primarily by drawing, but also rolling, forging, electrodynamically or hydrostatically shaping, or a combination thereof is considered.

Abstract: A low melting aluminum brazing alloy of about 15-25 wt. percent silver, about 15-25 wt. percent copper, about 1-5 wt. percent silicon, about 0-3 wt. percent zinc, about 0-2 wt. percent magnesium, about 0-2 wt. percent iron and the balance essentially aluminum and incidental impurities. Also, a brazing product of this alloy and a method of joining aluminum components using the brazing product.

Abstract: Method for recovering cadmium (Cd), nickel (Ni) and iron (Fe) from batteries containing the steps of: (a) reducing the size of the batteries to small pieces and separating the pieces into a coarse fraction and a fine fraction with the coarse fraction further separated into a magnetic and a non-magnetic fraction; (b) leaching out the fraction at approximately 90.degree. C.; (c) removing the Cd; (d) stripping the extractant and separating metallic Cd therefrom; (e) converting Fe-ions into (solid) Fe hydroxide and filtering; (f) recovering Ni from the filtrate.

Abstract: A method and apparatus for cleaning pickup and feed rolls of machines such as printers, copiers, facsimile machines and the like. The method utilizes a roll cleaner which includes an absorbent layer and cleaning solution provided within the absorbent layer. The roll cleaner is sufficiently thick to prevent the roll cleaner from feeding through the machine. The pickup and feed rolls will spin against the absorbent layer for cleaning. The roll cleaner may be stored in a resealable cellophane bag.

Abstract: A system and a method are disclosed for controlling structural deterioration of a vehicle parking structure by arresting deterioration caused by road salt erosion and corrosion of concrete floors and reinforcing steel in that structure. The invention includes spray washing the underside of vehicles prior to entry into the parking structure to remove road salt and thereby reduce road salt corrosive action within the facility. The invention further comprises arresting corrosion due to road salt which already has penetrated the concrete floors within the parking structure by the application of a chemical detergent which neutralizes the road salt that previously has penetrated the concrete. The chemical detergent may include a material having galvanic characteristics, such as metallic particles, which are believed to aid in inhibiting corrosion of the reinforcing steel.

Abstract: Disclosed is an improved flux comprising 32 to 61 wt. % sodium chloride, 2 to 15 wt. % magnesium chloride, 2 to 12 wt. % carbon, the remainder potassium chloride.

Abstract: In the processing of mainly inorganic refuse incineration products polluted by heavy metals and/or heavy metal compounds, and/or analogues of such products, to give environmentally acceptable products by melt-thermal treatment, an iron-containing melt is used whose iron content can be adjusted by addition of iron or an iron compound. The melt is first melted above 1300.degree. C. in a reactor. The melt is then oxidized with vigorous agitation by blowing in oxygen-containing gas until all the metals and metal compounds present in the reactor have been converted to the oxide form, the melt being kept above 1450.degree. C. and preferably at about 1500.degree. C., at least at the end of the oxidation. Subsequently, the melt is reduced, preferably by means of a part fraction of the refuse incineration product and/or iron, preferably in the form of scrap, and/or hydrogen. The reduction can then be continued by means of added aluminum and/or calcium and/or ferrosilicon.

Abstract: This invention provides a method and appratus whereby steel of various compositions may be produced from iron ore and coal through a series of stages without the intermediate production of liquid iron. A reforming reactor receives top gases from the steel making reactors, and converts them to high reduction potential gases which are returned to the steel making reactors. The iron ore and reductants, such as coal, are charged to a controlled atmosphere reactor which may be an inclined rotary cylindrical shaft. From the controlled atmosphere reactor the charge is moved to a potential shift reactor which is inclined or vertical and encounters increasing heat and rising gases for converting the carbonised sponge into a semi-molten state. The charge then passes to a high temperature reactor where it encounters the reducing gases from the reforming reactor and preheated oxygen to create temperature in which steel is made.

Abstract: To prevent burn-back at a coal dust injection lance which projects into a hot blast conduit of a blast furnace, cooling is effected using atomized coolant. Water is preferred as the coolant. The carrier gas used for the atomized water is either air or the oxygen which is injected through the lance for complete combustion of the coal dust.

Abstract: Composition and method of removing a coating painted on a surface. The method involves applying to the surface an acetone based composition containing an organosilicon compound, rubbing the acetone based composition into the surface, and removing from the surface the painted coating and the acetone based composition. The composition is a mixture of 1 to 75 percent by weight of acetone; 1 to 10 percent by weight of water; and 1 to 20 percent by weight of a volatile silicone fluid. The volatile silicone fluid having a vapor pressure of less than 0.10 mm Hg.

Abstract: The invention relates to a method for producing zinc, cadmium, lead and other easily volatile metals from sulfidic raw materials in a pyrometallurgical process. In the method, zinc sulfide concentrate is fed into molten copper in atmospheric conditions, at a temperature of 1,450.degree.-1,800.degree. C., so that the zinc, lead and cadmium are volatilized, and the iron and copper remain in the molten metal or in the metal sulfide matte created in the furnace.

Abstract: A process for treating titaniferous material by treating the titaniferous material and a particulant carbonaceous material in a kiln, recovering reduced titaniferous material and particulant char from the kiln and separating the particulant char, recycling the recovered separated char to the kiln in the region of the discharge port by blowing the char entrained in a fluid stream so that the blown char burns in the kiln largely as a flame in the region of the discharge port.

Abstract: Contaminated soil including rocks is mechanically screened to remove most of the soil from the rock. The rocks are then further screened and a liquid is sprayed over the rocks to wash the remaining contaminants from the rocks. The rocks are then recycled back to the original location. The wash fluid with the remaining contaminants is further screened, with the remaining fluids centrifuged in combination with the addition of a polymer to promote flocculation and further separation. The remaining liquid is recycled as spray wash liquid at the beginning of the process. The flocs and screened material are transported to a waste disposal site.

Abstract: A method and press for uniformly quenching a heated annular workpiece while fixturing the workpiece to prevent distortion during quenching. The press has a conically shaped lower die for receiving a workpiece to be quenched thereon and a vertically reciprocable conically shaped upper die for clamping and fixturing a workpiece between them. The press has a generally cylindrical quench ring carried by the upper die for engaging against the lower die to form a chamber around the workpiece to immerse the workpiece in quenching fluid. The lower die has a plurality of spaced apart inlets for uniformly distributing quenching fluid around the workpiece and which are preferably angled relative to the center axis of the lower die for producing a swirling turbulent flow of fluid within the chamber to more rapidly and uniformly quench the workpiece.

Abstract: Manganese or silicon carbide is formed in a solid state reaction by mixing manganese or silicon oxide particles with carbonaceous material (e.g., coke) particles. The materials may be formed into agglomerates including excess carbonaceous material and heated in a suitable reactor vessel. An iron source, such as pig iron and/or iron scrap, can also be added. In that case, the manganese or silicon carbide dissolves in molten iron to produce ferrosilicon or ferromanganese alloys.

Abstract: Methods of treating contact lenses employ a material composed of (a) a hydrophobic core having at least three carbon atoms and (b) at least three hydrophilic polyethylene oxide chains attached to the core.

Abstract: The parts are heated by conduction and radiation while the chamber is evacuated, whereupon the chamber is sealed air-tight and the parts are also heated by condensation of vapors from the grease and oil. When the parts reach a constant temperature the chamber is again evacuated, causing the temperature of the parts to drop as condensate thereon evaporates. Finally, the chamber is returned to atmospheric pressure and the cleaned parts are removed.