The invention relates to devices for separating pre-sorted bulk materials according to density, and can be used in any sector of the economy. The apparatus for pneumatic vacuum separation of bulk materials comprises a loading hopper, a feeder-divider in the form of a ribbed surface with longitudinal slits to remove the plate-shaped part of the bulk mixture and to provide for the uniform supply of the other part of the bulk mixture to a conveyor belt, a mesh belt conveyor, and a device for blowing the conveyor mesh with compressed air. The apparatus comprises carrier nozzles which are integral with settling hoppers and are located above the conveyor mesh. Feeding nozzles are located below the conveyor mesh on the same plane as the carrier nozzles and are simultaneously set for separating the source material into products of a certain density. All of the carrier and feeding nozzles are located at different distances from the conveyor mesh. The feeding nozzles are directly connected to devices that generate a flow of air at different speeds and force. The technical result is an improvement in the quality of the products obtained during separation and an improvement in the productivity of a single unit.

The invention relates to a modular unit made up of at least one lower module, one intermediate module and one upper module, where each module in turn comprises a motherboard, side openings for connection or linking with other adjacently arranged modules, which can be covered with a set of covers, using a side linking part between modules; in addition the modules (10) comprise an upper and lower linking means suitable for linking with other modules or with an upper or lower sealing cover. The modules are made up of stackable parts, thus reducing storage and transport space, as well as allowing the configuration of as large a centralisation of meters as required, since the system supports horizontal and vertical expansion (15).

The invention relates to light industry, in particular to means for taking care of the skin, specifically to a bath massage loofah which can be produced by interweaving natural or synthetic threads. The proposed bath massage loofah comprises a base which is arranged between wetting massage layers, wherein the base is constructed with threads which are interwoven with defined special knots, and the wetting massage layers are constructed with a continuous thread which is fastened to the base by sliding tatting knots with multiple uncut or cut loops. The introduction of the base into the loofah structure, and also the construction of the base and washing massage layers with threads which are interwoven with special defined knots ensures an improvement in the wetting capability together with a reduction in the amount of wetting agent and confers on the loofah anti-cellulite properties and scrubbing properties for peeling off dead skin cells, and also an improvement in the external appearance of the article.

The invention relates to a method for oxidising one or more organic compounds, including placing the organic compounds in contact with at least one oxidising agent as well as with a catalyst agent including at least one source of divalent or trivalent transition metal ions and at least one poly-α-hydroxyacrylic acid and/or a poly-α-hydroxyacrylate. The invention can be used for removing pollutants from soils.

A system, in certain embodiments, includes a gasification cooling system having an annular seal with a bellows. For example, the gasification cooling system may include a housing with an inlet, an outlet, and an interior between the inlet and the outlet wherein the interior has a throat adjacent the inlet, and the throat expands in a flow direction from the inlet toward the outlet. The annular seal may be disposed in the throat of the hoυsing wherein the annular seal includes the bellows.

The invention relates to a device for connecting two pipe ends (1, 1', 1' ', 2, 2', 2'') using a coupling part (3, 3', 3'') and a plug part (4, 4', 4''), wherein the coupling part (3, 3', 3'' ) comprises at least one concentric recess (5) in the interior and the plug part (4, 4', 4'') comprises at least one circumferential recess (6) on the exterior surface in the overlapping area, and wherein the coupling part (3, 3', 3'') comprises at least one opening (7) in the area of the recess (5), through which at least one flexible retaining element can be inserted into each annular channel formed by the recesses (5, 6). In order to simplify releasing the connection by removing the chain, and particularly sealing again after a long period of time and under extreme conditions, and to allow the same without the known simple construction design, the invention proposes that the retaining element is implemented comprising a lock and two ends, said ends being able to be inserted in one direction each into the circumferential annular channel through the opening (7), thus locking the two pipe ends (1, 1', 1' ', 2, 2', 2'' ) axially to each other.

The invention relates to a hammer mill (10) for feed preparation having milling housing (11) forming a grinding chamber (12) that has two sieve zones (I, II) on a circumferential wall that have sieve perforations of differing diameters and a rotor (20) in the grinding chamber, equipped with hammers (19), which can be driven. In order to be able to create feed of varying grain size using one and the same hammer mill without modification steps, according to the invention the rotor (20) can be driven in opposing rotation directions and the hammers (19) each have two impact surfaces (28a, b), of which one is effective in one rotation direction and the other is effective in the opposite rotation direction.

Gastric retentive dosage forms for extended release of acetaminophen or for both immediate and extended release of acetaminophen are described. The dosage forms allow effective pain relief upon once- or twice-daily dosing Methods of treatment using the dosage forms and methods of making the dosage forms are also described.

The invention relates to optical coherence tomography (OCT), more specifically to spectral optical coherence tomography (SOCT). The invention deals with problem of artefacts occurring in certain scan positions due to sharp increases of reflection by the object under investigation. It solves this problem by using an extra intensity sensor located at an output for non-dispersed light of the dispersive element used for spectral analysis, e. g. in the zero order of a diffraction grating, and using the signal of this sensor for the modification of the interferometric data.

Calcium (Ca), manganese (Mn) and magnesium (Mg) carbonate plus lead (Pb) and zinc (Zn) sulphide minerals in a permeable host, crushed ore, concentrates or as mine discharge tailing are selectively solution mined (in-situ or ex-situ) with a selected acid e.g. acetic acid to extract Ca, Mn, and Mg followed by multivalent oxidizing salts e.g. ferric salts to extract Pb and Zn sequentially. For in-situ leaching, an inter relationship has been identified between pressure, temperature, target depth and leachate concentration such that carbonate leaching is performed in a manner to prevent carbon dioxide gas (CO2) discharge thereby plugging host rock permeability avenues to preclude further leaching. This requires controlling the rate of acetic acid leaching to be in step with availability of solution to dissolve the resulting discharged CO2. Sulphide leaching is subsequently conducted on the carbonate-depleted host. The two resulting leachates are chemically treated to selectively recover extracted minerals as value added industrially ready products. The in situ method is particularly advantageous in preparing the high purity manganese products necessary for lithium ion batteries because it prevents occurrence of very fine metallic particles in the products that may happen during conventional mining. Alternatively, the in situ carbonate recovery steps can be independently employed; all in an environmentally friendly manner.