Abstract: Disclosed herein is a method for recovering an acid or a base during a metal extraction process. The method comprises contacting a feed stream comprising the acid or base and the metal with an ultrafiltration membrane to produce an ultrafiltration retentate and an ultrafiltration permeate, and contacting the ultrafiltration permeate with a nanofiltration membrane. The nanofiltration retentate produced comprises a majority of the metal from the feed stream, and the nanofiltration permeate produced comprises a majority of the acid or base from the feed stream. Also disclosed herein is a recovery apparatus for recovering an acid or a base during a metal extraction process.

Abstract: Disclosed herein is apparatus for recovering an acid or a base during a uranium extraction process. The apparatus contacts contacting a feed stream comprising the acid or base and the uranium with an ultrafiltration membrane to produce an ultrafiltration retentate and an ultrafiltration permeate, and contacting the ultrafiltration permeate with a nanofiltration membrane. The nanofiltration retentate produced comprises a majority of the uranium from the feed stream, and the nanofiltration permeate produced comprises a majority of the acid or base from the feed stream.

Abstract: Disclosed herein is a method for recovering an acid or a base during a metal extraction process. The method comprises contacting a feed stream comprising the acid or base and the metal with an ultrafiltration membrane to produce an ultrafiltration retentate and an ultrafiltration permeate, and contacting the ultrafiltration permeate with a nanofiltration membrane. The nanofiltration retentate produced comprises a majority of the metal from the feed stream, and the nanofiltration permeate produced comprises a majority of the acid or base from the feed stream. Also disclosed herein is a recovery apparatus for recovering an acid or a base during a metal extraction process.

Abstract: The invention relates to a construction time elevator arrangement comprising a hoistway; a protection deck mounted within the hoistway for protecting the portion of the hoistway below it from falling objects; the protection deck comprising a roof member extending diagonally across the hoistway and covering the hoistway such that it blocks objects and/or water from falling into the hoistway below it; and a cross member extending in horizontal direction across the hoistway below the roof member. The cross member is pivotally connected with the roof member, the protection deck being collapsible into a transport state by pivoting the cross member and the roof member towards each other. The invention relates to a method implementing the construction time elevator arrangement.

Abstract: The invention relates to a construction time elevator arrangement comprising a hoistway; a protection deck mounted within the hoistway for protecting the portion of the hoistway below it from falling objects; the protection deck comprising a roof member extending diagonally across the hoistway and covering the hoistway such that it blocks objects and/or water from falling into the hoistway below it; and a cross member extending in horizontal direction across the hoistway below the roof member. The cross member is pivotally connected with the roof member, the protection deck being collapsible into a transport state by pivoting the cross member and the roof member towards each other. The invention relates to a method implementing the construction time elevator arrangement.

Abstract: The present disclosure is related to a travelling cable clamp assembly fixing an elevator travelling cable to a fixing base, such as to a first movable support structure in the hoistway for supporting said at least one elevator unit movable in the hoistway, including at least an elevator car.

Abstract: A method of constructing an elevator, the elevator including a hoistway, an elevator car, a first movable support structure in the hoistway above the elevator car, for supporting the elevator car with a roping, and a roof structure, separate from the movable support structure, in the hoistway above the support structure, where the elevator car is used for transporting passengers and/or goods, and thereafter the first movable support structure is lifted higher in the hoistway, and thereafter the elevator car is used again for transporting passengers and/or goods. The method includes lifting the roof structure higher in the hoistway so as to make more room below the roof structure, the roof structure being a movable roof structure, and in that the movable roof structure is lifted in the hoistway taking support for the lift from a second movable support structure mounted in the hoistway above the roof structure.

Abstract: Disclosed herein is a method for recovering an acid or a base during a metal extraction process. The method comprises contacting a feed stream comprising the acid or base and the metal with an ultrafiltration membrane to produce an ultrafiltration retentate and an ultrafiltration permeate, and contacting the ultrafiltration permeate with a nanofiltration membrane. The nanofiltration retentate produced comprises a majority of the metal from the feed stream, and the nanofiltration permeate produced comprises a majority of the acid or base from the feed stream. Also disclosed herein is a recovery apparatus for recovering an acid or a base during a metal extraction process.

Abstract: A method and elevator arrangement wherein a roof structure is lifted higher in a hoistway so as to make more room below the roof structure, the roof structure being a movable roof structure, and in that the movable roof structure is lifted in the hoistway taking support for the lift from a second movable support structure mounted in the hoistway above the roof structure.

Abstract: Method in the manufacture of an elevator, in which method the parts of a platform, more particularly its support structure, are used for forming the structure that supports the machinery of the final machine room of the elevator, which platform has earlier been in its position in a position disposed lower in the elevator hoistway, and which platform was used in the aforementioned lower disposed position for supporting the machinery.

Abstract: The present disclosure is related to a travelling cable clamp assembly fixing an elevator travelling cable to a fixing base, such as to a first movable support structure in the hoistway for supporting said at least one elevator unit movable in the hoistway, including at least an elevator car.

Abstract: In a method in the use of a construction-time elevator, at least two lifts are performed. In each of the lifts, the supporting platform is lifted higher in the elevator hoistway with the hoisting device supported by the support structure so as to extend the operating range of the elevator car to reach higher in the elevator hoistway. A second support structure and a second hoisting device, which are above the support structure, are used between the lifts of the supporting platform, for moving the working platform in the elevator hoistway under construction between the second support structure and the support structure, and for lifting the support structure upwards in the elevator hoistway.

Abstract: An elevator arrangement includes an elevator hoistway, an elevator car, and a movable supporting platform for supporting the elevator components in the elevator hoistway. The supporting platform includes a supporting frame. The supporting frame includes a plurality of beams that are rigidly fixed to each other. The plurality of beams are arranged such that towards each of all four lateral directions of the supporting platform points at least one beam end of the supporting frame, at which beam end is a movable support element belonging to a plurality of movable support elements movable between a position extended from the platform towards the side and a position retracted towards the platform.

Abstract: A method and elevator arrangement wherein a roof structure is lifted higher in a hoistway so as to make more room below the roof structure, the roof structure being a movable roof structure, and in that the movable roof structure is lifted in the hoistway taking support for the lift from a second movable support structure mounted in the hoistway above the roof structure.

Abstract: Method in the use of a construction-time elevator, in which method the supporting platform that supports the elevator car of the elevator is lifted higher in the elevator hoistway with a hoisting device supported on a support structure. In the method the supporting platform is suspended from the support structure via at least one hoisting device and rope comprised in the hoisting device and the supporting platform is lifted upwards in the elevator hoistway with a lifting ratio of 1:x, where x is greater than 1.

Abstract: A method is provided to manufacture an elevator including an elevator car and a movable supporting platform. The movable supporting platform is in the elevator hoistway and the elevator car is in the elevator hoistway to transport passengers and/or freight between floors. The elevator car is removed from use, after which a lifting phase is performed, in which the supporting platform above the elevator car is lifted higher up in the elevator hoistway, after which the elevator car is again taken into use to move in the elevator hoistway and to transport passengers and/or freight between floors. Guide rails are installed to extend to above the supporting platform. Guide rail safety gears are arranged during the lift to allow movement of the supporting platform upwards and to grip the guide rails as a consequence of downward movement of the supporting platform.

Abstract: A method of constructing an elevator, the elevator including a hoistway, an elevator car, a first movable support structure in the hoistway above the elevator car, for supporting the elevator car with a roping, and a roof structure, separate from the movable support structure, in the hoistway above the support structure, where the elevator car is used for transporting passengers and/or goods, and thereafter the first movable support structure is lifted higher in the hoistway, and thereafter the elevator car is used again for transporting passengers and/or goods. The method includes lifting the roof structure higher in the hoistway so as to make more room below the roof structure, the roof structure being a movable roof structure, and in that the movable roof structure is lifted in the hoistway taking support for the lift from a second movable support structure mounted in the hoistway above the roof structure.

Abstract: The invention relates to a method and an apparatus for installing an elevator with-out machine room during the construction of a building, said elevator comprising at least a hoisting machine (4) provided with a traction sheave (30) and an elevator car (3) suspended by a set of hoisting ropes (28) and fitted to move along guide rails (2), and in which method at least a temporary machine room (6) movable in the elevator shaft (1) is utilized. At the final stage of installation, the machine room (6) of the elevator provided with a temporary machine room (6) is dismounted and the elevator is converted into an elevator without machine room by placing the hoisting machine (4) that was used in the temporary machine room (6), together with the hoisting ropes (28) on the traction sheave (30), into its final position in the elevator shaft (1).

Abstract: Method in the manufacture of an elevator, in which method the parts of a platform, more particularly its support structure, are used for forming the structure that supports the machinery of the final machine room of the elevator, which platform has earlier been in its position in a position disposed lower in the elevator hoistway, and which platform was used in the aforementioned lower disposed position for supporting the machinery.

Abstract: An elevator arrangement includes an elevator hoistway, an elevator car, and a movable supporting platform for supporting the elevator components in the elevator hoistway. The supporting platform includes a supporting frame. The supporting frame includes a plurality of beams that are rigidly fixed to each other. The plurality of beams are arranged such that towards each of all four lateral directions of the supporting platform points at least one beam end of the supporting frame, at which beam end is a movable support element belonging to a plurality of movable support elements movable between a position extended from the platform towards the side and a position retracted towards the platform.