1533803 Converter steelmaking INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE 30 Aug 1977 [30 Aug 1976] 36238/77 Heading C7D Iron is refined in a bottom blown converter by injecting a strongly oxidizing gas e.g. pure oxygen, through the central passage of a double-channel tuyere, and injecting liquid oxygen through the annular outer channel. The amount of liquid oxygen may be 0À2-0À5 kg/Nm3<...

The invention relates to a method and the associated circuit for contactless marking of a nonconductor, in particular a moving textile thread or yarn. Impressed on the running thread by means of a high-voltage generator and an ionisation electrode is a discrete electric charge which is received, amplified and evaluated by a receiver which is arranged in the running direction of the thread at a dis...

PURPOSE:To easily knot a viscous filament by providing a filament knotting device fixed to one end of a rotary shaft, which includes two guiding plates shaped like a hanging bird at a lip portion thereof. CONSTITUTION:Two filaments A, B are passed through one side of a lip portion 2a from the front of a knotting device 1 and hooked on the tail 2c. After that, when a rotary shaft 5 is turned counte...

A plasma arc torch which can be operated in either the transfer arc mode or the non-transfer arc mode includes a rear housing section 24 which mounts a rear electrode 30, a gas vortex generator 28, and releasable mounting means 26 adapted to mount selectively either i) an electrode assembly for operation of the torch in the non-transfer arc mode or ii) a collimating nozzle assembly for operation i...

A differential assembly of the automotive vehicle type, for rotating axially aligned drive axles, has a rotatable driving casing 10 which distributes the power to the inner end portions of the axles, A center ring member 13, having opposite wedge-like, face tooth formations, is secured within the casing for meshing with and driving corresponding tooth formations on a pair of pressure rings 32 betw...

This invention relates to a powdered phenolic resin composition suitable for the production of dry processed resinbonded felt. The phenolic resin composition imparts a good release of the felt from the heated platen or belt and has a rapid cure rate. The powdered phenolic composition is composed of a novolac type phenolic resin, or a mixture of novolac and resole type with an aromatic carboxylic a...

A nylon foam product produced by frothing in an intensive mixer a reaction mixture of catalyst, caprolactam and polyol prepolymer in the presence of a surfactant and gaseous frothing agent.

A method of removing nitrogen and phosphorus from waste water by using an activated sludge including aerobic bacteria is disclosed. The waste water is fed continuously and gradually into a treatment basin in which the sludge is contained so that a mixed liquor consisting of the waste water and the sludge is formed therein. A cycle consisting of an agitating step and an aerating step is repeated at...

PURPOSE:To transfer an ink with a high transfer probability irrespective of the kind of a recording medium, by a construction wherein the distance from a thermal head to the point of separation between an ink film and a recording medium can be set to an optimum value according to the kind of the recording medium used. CONSTITUTION:For example, in the case of a recording medium having a high surfac...

A pallet is provided from a single profiled metal sheet which has the opposite edges folded inwardly several times along bend lines that extend transversely to profiled grooves of the sheet so as to form hollow girders having perpendicular supporting walls along the pallet edges. The sheet is provided along the bend lines and in accordance with the configuration of the profiled grooves with rows o...

GRAIN-ORIENTED SILICON STEEL AND PROCESSING THEREFOR A process for producing grain-oriented silicon steel, and the steel produced thereby. The process includes the steps of: preparing a melt of silicon steel; casting the steel; hot rolling the steel; cold rolling the steel; decarburizing the steel; final texture annealing the steel; coating the steel with an aqueous solution comprised of from 4 to...

1519370 Coated nickel and cobalt alloys UNITED TECHNOLOGIES CORP 26 Aug 1976 [11 Sept 1975] 35521/76 Heading B2E A thermally protected Ni or Co superalloy, e.g. for use in combustion chambers, transition ducts and afterburner liners in gas turbine engines, has a metal bond coat which is an alloy of 15-40% G, 10-25% Al, up to 1% ythrium, the balance being a mixture of Fe, Co and Ni or a mixture of ...

This invention relates to a process for recovery of waste H2SO4 and HCl which are used for pickling metallic materials and articles and contain a large quantities of Fe ions. Furthermore, it offers a process for the recovery of H2SO4 and HCl from waste H2SO4 which contains large amounts of Fe ions after removal of Ti ions by a hydrolysis process in the production of TiO2 and also for the recovery ...

A liquid detergent composition is provided which contains, based on the total weight of the composition, 5-40 wt. % of an anionic surface active agent, 1-10 wt. % of an amine oxide, 0.5-5 wt. % of an alkali metal halide and 0.04-1.5 wt. % of at least one inorganic salt selected from sulfites, phosphates and thiosulfates. The liquid detergent composition does not corrode a manufacturing apparatus a...

Derivatives of cytidine-diphosphate-choline of the following formula: in which R represent an acyl radical chosen from the group comprised of saturated and unsaturated, linear or branched, monocarboxylic fatty acids having from 3-7 carbon atoms, and R1 represents H or an acyl radical identical to R, show a therapeutic activity analogous to that of cytidine-diphosphate-choline and are suit...