A method for the direct reduction of particulate iron-oxide-containing material. The method is carried out in a shaft furnace, wherein reformed gas from a reformer is fed as reducing gas to a reducing zone of the shaft furnace, the directly reduced ferrous particles are discharged from the shaft furnace and the top gas forming during reduction is extracted from the upper section of the shaft furna...

Flame resistant polyurethane foams are prepared by impregnating an open-cell polyurethane foam with a mixture of a carboxyl-containing polychloroprene latex, a zinc salt of a polymetaboric acid and optionally aluminium hydroxide.

An article 1, for use with a detection system 31, has embedded within it a marker 2, particularly a magnetic tag, which can be detected by the detection system 31. The detection system 31 includes a transmitter having a frequency generator 33, an amplifier 34 and a transmitting coil 35 to generate a magnetic field within an interrogation zone and a receiver having a receiving coil 36, a receiver 3...

An article 1, for use with a detection system 31, has embedded within it a marker 2, particularly a magnetic tag, which can be detected by the detection system 31. The detection system 31 includes a transmitter having a frequency generator 33, an amplifier 34 and a transmitting coil 35 to generate a magnetic field within an interrogation zone and a receiver having a receiving coil 36, a receiver 3...

Method of treatment of waste water, using activated sludge, comprising a process of oxidation of the carbonaceous contaminants and a nitrification process, optionally in combination with a denitrification and/or dephosphatation process. This process comprises a reaction stage during which decontamination reactions take place, a sludge concentration stage, a generation stage during which the s...

A multifocal birefringent lens system is described together with applications of the lens system such as ophthalmic lenses (including those of the intraocular, contact and spectacle type) and optical instruments and devices including photographic cameras, telescopes, microscopes, copiers, spectrographic instruments, etc.

The invention provides a pressure sensitive adhesive composition suitable for skin contact and comprising a polymer, copolymer or mixture of polymers and/or copolymers and optionally usual additives, and further comprising 1-20 % by weight, based on the total amount of the composition, of at least one silane compound. Preferably the silane compound contains at least one amino functional group. Fur...

The invention provides a pressure sensitive adhesive composition suitable for skin contact and comprising a polymer, copolymer or mixture of polymers and/or copolymers and optionally usual additives, and further comprising 1-20 % by weight, based on the total amount of the composition, of at least one silane compound. Preferably the silane compound contains at least one amino functional group. Fur...

The present invention provides an electrode (15, 115, 165, 225) which uses a disordered active material (15, 115, 165, 225) preferably formed by rapid solidification. The active material does not need a binder to be used as an electrode, and thus, is considered self-supporting. The material also is substantially nonporous or impermeable to an electrolyte and when used as an electrode exhibits an i...

A spacer assembly for imparting a swirl to a passing steam water mixture within a fuel channel of a boiling water reactor is disclosed. The spacer assembly is placed at periodic intervals along the inside of a square cross sectioned fuel channel so as to separate the fuel containing rods from each other and the fuel channel sides. Each discrete spacer element is constructed of a matrix of helicall...

Disclosed are immobilized electrolyte membranes having a high electric conductivity and a high mechanical strength, where an ionic conductor such as a polymer electrolyte or an ion-exchange resin is immobilized in pores of a porous solid polymer membrane, particularly of polyolefin having a weight average molecular weight of not less than 5 x 10<5>, the porous solid polymer membrane having a thick...

A self-supporting sheet-like article is described which is comprised of a substrate layer and an antistatic coating applied to at least one surface of the substrate layer. The antistatic coating is produced by the treatment of at least one surface of the substrate layer with an electrical corona discharge which runs between a live electrode and a counter electrode. Simultaneously, i.e. during the ...

At least two support structures (6, 7) hold the control rod (3) at a predetermined height above the reference plane (2), and the control gap is formed between a contour line in the rod and reference plane extending parallel to the reference plane and above it. The support structures have a number of surfaces located at differing distances from the contour line. The control rod together with the su...

An induction plasma furnace comprises an inductor (1) housing a melting pot (2) the side wall of which consists of two vertically oriented sections (3) made of an electrically conductive material and electrically insulated from each other. At least one of the sections (3) of the pot (2) is connected in series with the electrical circuit of an electric arc plasmatron (7), said circuit being closed ...

A method for preventing deposits or build-ups of dust in off-gas channels for dust-containing off-gases from electrothermal smelting furnaces. This is done by blowing an additional gas tangentially into the furnace off-gas channels at the positions where build-ups or deposits of dust normally occurs. Hence a gas spiral is provided between the inner wall of the furnace off-gas channels and the dust...