Abstract:
The invention generally relates to a process for the preparation of water-absorbent polymer particles, comprising the process steps of (i) preparing an aqueous monomer solution comprising at least one partially neutralized, monoethylenically unsaturated monomer bearing carboxylic acid groups (α1) and at least one crosslinker (α3); (ii) optionally adding fine particles of a water-absorbent polymer to the aqueous monomer solution; (iii) adding a polymerization initiator or a at least one component of a polymerization initiator system that comprises two or more components to the aqueous monomer solution; (iv) optionally decreasing the oxygen content of the aqueous monomer solution; (v) charging the aqueous monomer solution onto a belt of a polymerization belt reactor; (vi) polymerizing the monomers in the aqueous monomer solution on the belt, thereby obtaining a polymer gel; (vii) discharging the polymer gel out of the polymerization belt reactor and optionally comminuting the polymer gel; (viii) drying the optionally comminuted polymer gel; (ix) grinding the dried polymer gel thereby obtaining water-absorbent polymer particles; (x) sizing the grinded water-absorbent polymer particles; and (xi) optionally treating the surface of the grinded and sized water-absorbent polymer particles; wherein the belt is shaped as a trough extending longitudinally over at least 30 % of a longitudinal extension of the belt; wherein the trough comprises a first part and a further part.
Abstract:
A conveyor system comprising an endless conveyor belt (5) having a plurality of mechanical conveyor means (12) projecting from a top surface thereof and a delivery tube (1) having an intake end and a discharge end for receiving a delivery portion of the endless belt and a return tube (10) extending along the delivery tube for receiving a return portion of the endless belt. A drive assembly (6, 7) is mechanically connected to the endless belt for rotating it for moving it in the tubes. Means (9) are arranged to guide the endless belt into the return tube with a bottom surface (14) of the belt following at least the upper portion of the return tube when moving through the return tube. The return tube is designed and dimensioned with respect to the width of said belt so as to support transversal end portions of the belt by return tube portions from below when the belt moves through the return tube while following the upper portion thereof.
Abstract:
Eine Förderanlage zum Fördern von wenigstens einem Fördergut umfasst einen endlos umlaufenden Förderer, wenigstens einen am oder im Förderer angeordneten Transponder, bevorzugt RFID-Transponder, und wenigstens eine Kommunikationseinrichtung zum drahtlosen Übertragen von Daten an den Transponder und/oder zum drahtlosen Auslesen von in dem Transponder gespeicherten Daten, wobei der Förderer ein Taschenfördergurt ist. Bevorzugt weist der Förderer eine Vielzahl von in regelmäßigen Abständen angeordneten Transpondern auf, wobei die an die einzelnen Transponder übertragenen Daten bzw. die in den einzelnen Transponder gespeicherten Daten vorzugsweise Daten sind, welche Informationen über einen definierten Abschnitt des Förderers betreffen, wie beispielsweise Informationenüber die Art und/oder Menge des Fördergutes in einem dem jeweiligen Transponder zugeordneten Abschnitt des Förderers.
Abstract:
The invention generally relates to a process for the preparation of water-absorbent polymer particles, comprising the process steps of (i) preparing an aqueous monomer solution comprising at least one partially neutralized, monoethylenically unsaturated monomer bearing carboxylic acid groups (α1) and at least one crosslinker (α3); (ii) optionally adding fine particles of a water-absorbent polymer to the aqueous monomer solution; (iii) adding a polymerization initiator or a at least one component of a polymerization initiator system that comprises two or more components to the aqueous monomer solution; (iv) optionally decreasing the oxygen content of the aqueous monomer solution; (v) charging the aqueous monomer solution onto a belt of a polymerization belt reactor; (vi) polymerizing the monomers in the aqueous monomer solution on the belt, thereby obtaining a polymer gel; (vii) discharging the polymer gel from the belt and optionally comminuting the polymer gel; (viii) drying the optionally comminuted polymer gel; (ix) grinding the dried polymer gel thereby obtaining water-absorbent polymer particles; (x) sizing the grinded water-absorbent polymer particles; and (xi) optionally treating the surface of the grinded and sized water-absorbent polymer particles; wherein in a first transversal cross section of the belt the belt has a shape of a first concave curve; wherein R is in the range of from 2 to 30.
Abstract:
A tube conveyor belt system for use in conjunction with a support. At least a portion of the support has a concave shape. The tube conveyor belt system has a belt and at least one cleat. The belt has a surface. The at least one cleat extends from the surface of the belt. The at least one cleat includes a plurality of paddle regions and a plurality of web regions. The plurality of paddle regions is in a spaced-apart configuration. The web regions have a flexibility that is greater than a flexibility of the paddle regions. One of the web regions is positioned between adjacent paddle regions.
Abstract:
A durable reinforcing band for conveyer belts, wherein a reinforcing band (3) is formed by interweaving a number of hard cords (6) facing a direction orthogonal to the longitudinal direction and longitudinally spaced at predetermined intervals with a number of longitudinally directed warp yarns (7) in such a manner as to prevent longitudinal shift, the reinforcing band (3) being disposed on the upper or lower surface of a core (2) composed of canvas or the like and being then surrounded by rubber (5), thereby forming a belt (1), and wherein the transverse stiffness and shape retainability of the belt can be enhanced by arranging the hard cords in a direction orthogonal to the longitudinal direction of the belt, and moreover, the hard cords are prevented from shifting longitudinally of the belt; and a conveyer belt, particularly pipe conveyer belt, using the same.
Abstract:
A continuous haulage system, including a belt (1) adapted to convey material, said belt (1) being suspended from supporting means (3a, 3b) by hanging members (4a, 4b) located along each opposing longitudinal edge of said belt, wherein the hanging member (4a, 4b) has a hook-shaped cross-section.
Abstract:
Carrier belt, flat at rest and intended to operate like a trough on a carrier of the type comprising an inner structure with longitudinal and transversal resistance formed by two superposed layers (1-2) substantially extending throughout the width of the belt, characterized in that it further comprises at least on one of the side of the structure, a stiffening narrow layer (5) with high transversal compression resistance, of which the width is comprised between 1/4 and 2/3 of the belt width, axially positioned in the central portion of the belt.