| ELKEM AS Patent applications |
| Patent application number | Title | Published |
|---|
| 20110156324 | SIDEWALL AND BOTTOM ELECTRODE ARRANGEMENT FOR ELECTRICAL SMELTING REACTORS AND METHOD FOR FEEDING SUCH ELECTRODES - Metallurgical reactors having cooling capability and electrode feed capability are disclosed. The reactors may include a shell having a sidewall and a bottom, where the shell is adapted to contain a molten material. The reactors may include at least one consumable electrode protruding through an opening of the shell and into the molten material. The reactors may include a current contact clamp configured to conduct operating current to the electrode, where the current clamp is in contact with the electrode, and where the current clamp comprises at least one internal channel, wherein the internal channel is configured to circulate a cooling medium. The reactors may include an electric isolation ring disposed between the electrode and the opening of the shell, wherein the electric isolation ring is configured to sealingly engage the electrode and the opening so as to restrict flow of the molten material out of the shell. | 06-30-2011 |
| 20100252414 | ELECTROMETALLURGICAL PROCESSING METHOD, AND AN APPARATUS FOR PRODUCTION OF SILANE - The present invention relates to a method for production of silane where particulate quartz in a fluidized bed is treated with a gas containing hydrogen at a temperature below 0° C., with the quartz in the fluidized bed subjected to an alternating electric field having a frequency equal to the intrinsic resonant frequency of at least a part of the quartz particles to create vibrational energy in the particles, thereby causing a chemical reaction between quartz and hydrogen to produce silane. The invention also relates to an apparatus for carrying out the method. | 10-07-2010 |
| 20100162850 | CARBOTHERMIC ALUMINUM PRODUCTION APPARATUS, SYSTEMS AND METHODS - Apparatus, systems and methods for carbothermically producing aluminum are disclosed. The systems may include a reactor and an electrical supply. The reactor may include a plurality of side-entering electrodes and a top-entering electrode. The electrical supply may be operable to supply multiphase current to the side-entering electrodes and/or the top-entering electrodes. The electrodes may be in communication with a molten bath of the reactor, and the multiphase current supplied thereto may be passed through the bath to heat the reactor. The amount of current supplied to various electrode sets may be adjusted to facilitate tailored heating of the molten bath. | 07-01-2010 |
| 20090236095 | METHOD OF CEMENTING GAS OR OIL PIPELINE AND HYDRAULIC CEMENT SLURRY - The present invention relates to a method of cementing a casing of an oil or gas pipeline to a surrounding well wall, where an hydraulic cement slurry is formed and the slurry is deployed in the annulus between the pipeline casing and the surrounding well wall. The cement slurry is formed by mixing together an hydraulic cement 12 to 24% of silica based on the weight of cement, and water; wherein the silica comprises ⅓ to ⅔ microfine silica and ⅔ to ⅓ silica flour. The invention further relates to a cement slurry for use in the method. | 09-24-2009 |
| 20090012213 | Composite Plastics Material - A composition for making a composite plastics material, comprising a polymer, wood fibre and microsilica. The microsilica, i.e., silica fume, is added for the purpose of reducing the water absorption while maintaining, or improving, the flame retardancy, mechanical performance and processibility of the material. The intended polymers for the composite materials are polyethylene (PE), polyvinylchloride (PVC), polypropylene (PP) or polyethylene terephthalate (PET). The composites can be shaped through extrusion or heat-moulding. | 01-08-2009 |
