Abstract: A bioleaching and solvent extraction process with selective recovery of copper and zinc from polymetallic sulphide concentrates is described, comprising a bioleaching and ferric ion reducing process and a copper and zinc solvent extraction process. The bioleaching and ferric ion reducing process comprises a concentrates pulp conditioning step; a bioleaching step, wherein once the pulp is conditioned it is subjected to a bioleaching process using a plurality of bioreactors of the stirred-tank type with an air injection and diffusion system, which allows handling of a pulp density higher than 15%; a step of solid separation from a solution rich in metallic ions from the bioleaching step; and, a ferric ion reduction step, wherein the pulp from the previous step is subjected to a transformation step of ferric ions into ferrous ions.

Abstract: A bioleaching bioreactor having an air injection and diffusion system, which allows control of the air bubble fine size, improving the oxygen and carbon dioxide distribution required by the microorganisms promoting the bioleaching process, to maintain the cellular concentration during the process.

Abstract: An electric and/or telecommunications cables having retro-reflective integral covers to be used in harsh environments with low or null visibility and the manufacturing process thereof. The cable comprises a core capable of incorporating a plurality of electric and/or telecommunications conductors, reinforcement elements and/or filler elements; a first protective cover layer wrapping the core; at least one reflective tape including visible external light retro-reflective elements, and wrapping the first protective cover layer, which constitutes a second cover layer; and a third protective cover layer wrapping the second cover layer, constituted by the reflective tape having retro-reflective elements and the first protective cover layer.

Abstract: The invention relates to a method for manufacturing reinforced overhead multipurpose cable for outside telecommunications of Voice, Video, and Data Distribution (VVDD) type. The reinforced overhead multipurpose cable comprises a dry and multipair construction core, electromagnetic shielding elements and external protection thermoplastic cover, characterized because it includes one or several externally placed metal or plastic supporting elements for cable self-support; a core integrated by insulated electrical conductors of 2 to 300 twisted pairs, formed with twisting closed lay lengths and reduced in the formation of said component pairs; a plastic tape helicoidally arranged; a tape wrapping the assembled core; said tape being of aluminum for electromagnetic shielding and an external insulating cover both for the core and the reinforcement element, the dry core does not affect the conductance or capacitance or resistance of the insulation.

Abstract: A bioleaching and solvent extraction process with selective recovery of copper and zinc from polymetallic sulphide concentrates is described, comprising a bioleaching and ferric ion reducing process and a copper and zinc solvent extraction process. The bioleaching and ferric ion reducing process comprises a concentrates pulp conditioning step; a bioleaching step, wherein once the pulp is conditioned it is subjected to a bioleaching process using a plurality of bioreactors of the stirred-tank type with an air injection and diffusion system, which allows handling of a pulp density higher than 15%; a step of solid separation from a solution rich in metallic ions from the bioleaching step; and, a ferric ion reduction step, wherein the pulp from the previous step is subjected to a transformation step of ferric ions into ferrous ions.

Abstract: An electronic luminaire based on light emitting diodes, for illumination with a low electric power consumption at indoor spaces for offices or wide spaces, which use false soffit systems on their ceilings, in order to adapt their lighting. It is based on a closed module that is manufactured with hot galvanized stamped laminated steel or with injection molding plastic, and comprehends four sections: A), B), C) and D), where A) corresponds to a casing which houses B) and C) overlapped sections, and these are finally assembled to D) section, together with an electronic power source; the B) section is an electrical harness, the C) section is a plurality of LED bars, and D) section corresponds to the reflecting screen, that counts with a plurality of individual reflecting elements of concave, elliptical or parabolic type.

Abstract: Thermoplastic formulations to manufacture pipe and fluid accessories for home and industrial use comprising a polyvinyl chlorinated thermoplastic compound (CPVC) at a level up to 100 phr, oxidizing agents, polymer promoter agents, and impact modifier agents characterized because it includes a blend of internal and external lubricant agents based on: paraffinic wax selected from paraffinic wax from calcium stearate, polyethylene wax, oxidized polyethylene wax, stearic acid and fatty acid waxes, polyethylene wax, homopolymer of oxidized ethylene, paraffinic wax and mercaptide thermostabilizing agents.

Abstract: Enhanced superconducting power cable of at least one phase, characterized by two tubular sections, the first section being a flexible superconducting core, with a stainless steel tape mesh and copper tape layers overlaid at an angle of 0° to 45° followed by two or more superconducting material layers placed overlaid and a second application of two or more superconducting material layers in opposite direction with regard to the previous ones; the second tubular section is an annular space of vacuum thermal insulation formed by a flexible corrugated pipe covered with multilayer insulations, including also a pipe with a stainless steel mesh to adhere an internal semiconducting shield made of polyethylene with insulation followed by a second metal shield based on copper tapes and a polyethylene protecting cover.

Abstract: A flexible conductor core for superconducting power cable, characterized by a central tubular element on which the superconducting tapes are placed, in the shape of a spiral or helix, in at least two layers with a calculated angle of lay length, being one of the sections of the layers of the superconducting tapes laid in a direction opposite to the other section, wherein the laying length of all the layers varies from a maximum Pmax1 (1000 cm) and Pmax2 (1000 cm) in the intermediate layers to a Pmin1 (2 cm) and Pmin2 (2 cm) in the external layers, while the laying angle of the tapes of all the layers varies from ?max1 (45°) to ?min1 (0°)

Abstract: The bailing and automatic stowing system is designed for the winding of electric conductors, particularly for automotive harnesses, and is characterized by an arrangement consisting of: a conventional cutting table with electronic control arranged in the reels as support of up to seven stacked packings; an octagonal packing of three octagonal cardboard or plastic pieces, specially designed for the electric conductor roll and a metal universal cabinet to accommodate up to four stowages of piled packings for their storage.

Abstract: Multipurpose cable for outside telecommunication of voice, video, data and distribution type (VVDD) composed of: a multipair construction core, electromagnetic shield elements and outside protective thermoplastic cover, characterized because it has a core composed of 2 to 600 twisted pairs of insulated electrical conductors, formed with close pairing lay lengths and reduced in the formation of said compounds pairs; a helicoidally wrapped plastic tape; a tape wrapping the assembled core; and an electromagnetic shield aluminum wrapping and outside insulating cover filled with jelly.

Abstract: An ultra thin wall primary cable for automotive service including a conductor nucleus including a smooth, annealed, geometrically formed joint of copper wires, and an insulating thermoplastic cover including polyvinyl chloride which is lead free, flame retardant, and resistant to abrasion, gasoline and pinch test. The cable is fabricated in three stages including: i) stretching copper wires by a one-row or multi-row drawing machine; ii) passing the copper wires through a single or double torsion joining machine; wherein steps (i) and (ii) are performed in such manner as to result in a geometrically constructed joint which is sufficiently smooth and having slight undulations; iii) positioning the insulating thermoplastic cover concentrically around the conductor nucleus; and iv) extruding the thermoplastic cover around the conductor nucleus.

Abstract: The primary cable of compressed conductor is properly a low tension primary cable with the particularity of having a same sectional area that permits to conduct, the same amount of electric current to any part of an automotive vehicle. However, its external diameter is much more smaller related to a same caliber of the same nature because of the compression that it suffers during the process of the compacted joining in a joining machine. The cable of compressed conductor has several advantages over other conventional primary cables, since a bigger standardization in the insulator thickness is found and in this way, a standardization on the results of the chemical-physical, and mechanical tests is accomplished. (these tests are compulsory because of its design.

Abstract: An automatic automotive cable braiding or pairing machine that does not require special foundation or anchoring for its mounting where in the design of its arrangements consisting of: clamp operated by a pneumatic or hydraulic actuator; a pneumatic-type pressing device or fastener that permits the torsion of cables in cut segments with constant pitches and operates with different gauges; and a tailstock element with terminal holders system that operates with an actuator; and sensor, protection and control electronic elements; and a torsion method.

Abstract: The packing and stowing system of roll of automotive electric conductors is characterized by three independent sections that when adjusted, they form a back up cover that prevents the deformation of the cable during its winding and when it is being stowed. The sections are integrated by a cylindrical body that is opened when it is introduced in a bobbin, as guide and subjection element of the wound roll; and a post set on a base as support for the piling up of the packed rolls and the hoop of the platform.

Abstract: The invention relates to a method of preparing an improved cable and an improved optical fiber cable comprising a central reinforcement member and a plurality of loose tubes as laying elements, placed longitudinally around the central reinforcement member. The loose tubes comprising at least one or more optical fiber filaments. A gel filling material is contained in both the inner section as well as the outer section of the loose tubes. A layer encircling the assembly is selected from the group consisting of an aramide fiber layer, a fiber glass and combination thereof. At least one or more plastic cover is placed longitudinally over the fiber layer to support metal ribbons which are peripherally incorporated to the assembly and a second layer of plastic cover is placed over the metal ribbon.

Abstract: The insulating formulation is a mixture of vulcanizable halogen free polyolefins with low smoke emission and fire resistance characteristics, for application in compounds to insulate and cover cables and electric conductors. The polyolefins are formulated with a hydrated inorganic charge, an alkoxysilane, a curing agent, an additive such as a process assistance agent and a combination of two antioxidants, a hindered phenol and a zinc-mercapto toluimidazole salt. The stabilized formulations with the antioxidant combination of phenol with steric hindrance and zinc 2 mercapto toluimidazole salt offer a good thermostability at 3000 hours at a temperature of 125.degree. C. and at 240 hours at a temperature of 165.degree. C. and does not stain or decolorate the copper surface when the composition is steam vulcanized.

Abstract: The present invention relates to a device that measures and counts near surface bubbles on a copper bar, as well as the cracks on the lateral sides. The device detects said flaws in real time. The device is based on the image digitalization technique. The device consists of a personal computer, a video camera, a digitalization card, water and air sprinklers, external monitor and camera frame. The input of the images is performed with the video camera protected within the frame. The object of the water and air sprinklers is to make the bar flaws more visible. The external monitor allows to focus the area of interest and the digitalizing card within the computer, following the instructions of the program, performs the image analysis.

Abstract: A coextruded triple layer electric conductor for cable insulation having low humidity absorption, low emission of toxic gases, low smoke emission and high flame retardance comprising a first layer comprising polyvinyl chloride as a base over an electric conductor core, a second layer over first layer, comprising high density polyelthylene optionally modified with an ethylene copolymer, and a third layer over said second layer comprising polyvinyl chloride as a base.

Abstract: The dual equipment for identification of telephone calls is a terminal electronic device that meets the telephone specifications for the service of Caller Identification. It is an intelligent electronic equipment that is connected to the telephone line of a called user that, upon receiving a call phone, presents through a liquid crystal display the caller's telephone number information. The equipment can also store in the memory the telephone call identification when the subscriber is not in his place of business, and thus when the user returns he can check who called, or from which telephone number, as well as the date and time. It consists of a battery eliminator entry for its power supply and a support battery, it identifies the information sent to it by the network through the input signalization that can be of DMF (Dual Tone Multifrequency) type or FSK (Frequency Shift Keying) type.