Abstract: A method for recovering a valuable substance is provided. The method includes: a thermal treatment step of thermally treating a target containing a valuable substance while supporting a target storing unit, in which the target is stored, by a supporting unit that can support the target storing unit, wherein the thermally treating includes heating a gas present in a region, in which the supporting unit is positioned, by a flame for thermally treating the target such that the target storing unit is not contacted by the flame; and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.

Abstract: A machine tool bed (1) is configured by integrally connecting element beds (2, 3) in a horizontal direction, the element beds (2, 3) to be connected each have a joint surface arranged to intersect with a horizontal plane, at least one element bed of the element beds (2, 3) to be connected to each other has a seal groove in the joint surface thereof, and the seal groove is filled with a sealant in a state where the element beds (2, 3) to be connected to each other are connected to each other.

Abstract: A machine tool bed (1) is configured by integrally connecting element beds (2, 3) in a horizontal direction, the element beds (2, 3) to be connected each have a joint surface arranged to intersect with a horizontal plane, at least one element bed of the element beds (2, 3) to be connected to each other has a seal groove in the joint surface thereof, and the seal groove is filled with a sealant in a state where the element beds (2, 3) to be connected to each other are connected to each other.

Abstract: There is provided a machine tool capable of housing workpieces of different sizes in a same workpiece storage unit without requiring a new workpiece storage unit. In a machine tool including a workpiece storage unit having a plurality of housing spaces housing workpieces and a processing machine processing a workpiece supplied from one of the housing spaces, the workpiece storage unit is structured so that the size of each housing space is changeable.

Abstract: There is provided a machine tool capable of housing workpieces of different sizes in a same workpiece storage unit without requiring a new workpiece storage unit. In a machine tool including a workpiece storage unit having a plurality of housing spaces housing workpieces and a processing machine processing a workpiece supplied from one of the housing spaces, the workpiece storage unit is structured so that the size of each housing space is changeable.

Abstract: A machine tool is provided where the support rigidity of the saddle is improved without increasing the height of the headstock. The machine tool includes a headstock situated on a fixed bed and a saddle having two different heights disposed on the fixed bed so as to be movable along a direction of an axis line of the headstock. A tool post is present on a column placed on the saddle so that the tool post is movable in a direction perpendicular to the axis line of the headstock. In this machine tool, the height of one portion of the saddle located toward the rear side of the tool is larger than the height of another portion of the saddle located toward the front side of the tool.