Abstract: The invention relates to an electrochemical storage cell based on sodium and sulphur. A disadvantage of the known storage cells of this type is the fact that if assembled to form batteries, failures of individual storage cells result in fairly large capacity losses of the battery. These disadvantages are avoided by fixing the quantitative ratio of sulphur to sodium as a function of the rated capacity of the storage cell in such a way that the voltage at the end of the rated discharge has a specified value and the sodium polysulphide which forms during the discharge has a specified composition.

Abstract: A high-temperature storage battery is bounded by a thermal insulation and has an inner space in which electrically interconnected storage cells are disposed and secured. The storage cells are secured in such a way that an adequate cooling and heating of the storage cells is made possible. In order to form a storage cell block, the storage cells are embedded in a sealing compound or a course-grained loose material. Cooling devices are integrated in the storage cell block or disposed on the outside directly adjacent the block for conducting heat to the block. Heating elements are provided for heating up the storage cells.

Abstract: A high-temperature storage battery is assembled from a multiplicity of electrically interconnected storage cells. A retainer holds the storage cells together to form a storage cell block. The storage cells are embedded in a mixture being formed of at least one coarse-grained material and at least one binder. By melting and subsequent complete curing of the binder, a concrete-like mass is formed, in which the storage cells are undetachably embedded.

Abstract: A clarifying filter-centrifuge comprises a rotatable driving shaft, a closed drum driven by the shaft, a cover which closes the drum at an end face thereof, and a filter diaphragm mounted in the cover and extending normal to an axis of rotation of the shaft. The drum includes an outer sleeve and an inner sleeve coaxial with the outer sleeve and having a thrust body. The driving shaft includes a hollow shaft and an inner shaft axially displaceable in the hollow shaft. The drum is connected to the hollow shaft. Suspension is fed axially into the inner sleeve and flows through distributing channels into the interior of the outer sleeve and then through the filter diaphragm. The cover is displaceable for discharging separated solids from the centrifuge.

Abstract: A clarifying filter-centrifuge comprises a rotatable driving shaft, a closed drum driven by the shaft, a cover which closes the drum at an end face thereof, and a filter diaphragm mounted in the cover and extending normal to an axis of rotation of the shaft. The drum includes an outer sleeve and an inner sleeve coaxial with the outer sleeve and having a thrust body. The driving shaft includes a hollow shaft and an inner shaft axially displaceable in the hollow shaft. The drum is connected to the hollow shaft. Suspension is fed axially into the inner sleeve and flows through distributing channels into the interior of the outer sleeve and then through the filter diaphragm. The cover is displaceable for discharging separated solids from the centrifuge.