Provided is a device for improving perovskite film formation uniformity, including a grinder and a sheeter, wherein the grinder grinds a perovskite precursor into a powder, the sheeter presses the ground precursor powder into a precursor sheet, the sheeter includes a mold for pressing the precursor powder and a heating device, and the heating device heats a lower mold. A method of using the above device for improving perovskite film formation uniformity, and a method of preparing a perovskite solar cell are also provided. The precursor sheet prepared herein not only solves the problems of uneven particle size and uneven spreading at the bottom of the evaporation source or incomplete coverage, but also prevents splashing during vacuuming and aeration, and meanwhile, since the precursor powder is compacted, it is more conducive to the uniform conduction of heat during the heating and evaporation process, thereby improving the heat energy use efficiency.

A plant for manufacturing ceramic articles comprising two feeding devices, each of which is designed to contain a powder material of a respective type and to feed said powder material to a conveyor assembly; the plant further comprises an operating device which is designed to enable the output of the powder material selectively in the area of the feeding devices arranged successively and transversely to the feeding direction, and a control unit which controls the operating device depending on a desired reference distribution and how far the conveyor assembly feeds the power material.

The invention relates to a dosing apparatus for dosing bulk material into block forming elements, and for arrangement on a filling car of a filling apparatus of a block-making machine for manufacturing patterned blocks, in particular paving blocks. The filling car may be pushed forward and backward over block forming elements in a displacement direction, and a first bulk material component may be filled into the block forming elements with this car. The dosing apparatus comprises at least one filling box that has a lower outlet that may be opened and closed by means of a closure. A second bulk material component may be filled from the filling box into the block forming elements via the lower outlet.

A method for decorating in thickness a ceramic slab, comprising the following steps: preparing, on a decoration surface (10), a first soft decorated layer (L1) of ceramic material endowed with a decoration (V); progressively transferring, by deposition, the soft decorated layer (L1) from the decoration surface (10) to a first deposition surface (50), situated at a lower height than the decoration surface (10), thus progressively forming on the first deposition surface (50) a second soft decorated layer (L2) which has a head (H) and a tail (T); progressively transferring, by deposition, the second soft decorated layer (L2) from the first deposition surface (50) to a second deposition surface (83), situated at a lower height than the first deposition surface (50), starting from the tail (T) of the second soft decorated layer (L2), thus progressively forming on the second deposition surface (83) a third soft decorated layer (L3).

The invention relates to a dosing apparatus for dosing bulk material into block forming elements, and for arrangement on a filling car of a filling apparatus of a block-making machine for manufacturing patterned blocks, in particular paving blocks. The filling car may be pushed forward and backward over block forming elements in a displacement direction, and a first bulk material component may be filled into the block forming elements with this car. The dosing apparatus comprises at least one filling box that has a lower outlet that may be opened and closed by means of a closure. A second bulk material component may be filled from the filling box into the block forming elements via the lower outlet.

The present invention relates to a system for the production of thermal insulating, architectural and structural foam materials cast in molded volumes configured for a subsequent milling process, wherein molded foam volumes are cut into dimensional products or product components.

Machine and method for compacting ceramic powder (CP); a layer of non-compacted ceramic powder (CP) is conveyed in a feed direction (A) through a compacting device (2); downstream of the compacting device (2) there is positioned a detection device (8) which detects the density of the layer of compacted ceramic powder (KP); the quantity of ceramic powder (CP) fed to the compacting device (2) is varied in time as a function of what is detected by the detection device (8) to thus regulate the density of the layer of compacted ceramic powder (KP).

A production device for manufacturing a product in the form of a sheet or a block, including: an initial agitator (1), a primary conveyor belt (2) and a mixing agitator (3); each of initial agitators (1) is configured with the primary conveyor belt (2), one or more stones or a stone-like granular material having a selected particle size and a binder are initially mixed in the initial agitator (1) and then an initial mixture is obtained; the mixing agitator (3) includes a rotating container for undertaking a material; the initial mixture is conveyed to the mixing agitator (3) through the primary conveyor belt (2); more than one initial agitator and matched primary conveyor belts thereof are disposed around the mixing agitator (3) at intervals.

A method for manufacturing a product in the form of a sheet or a block, including: preparing an initial mixture including one or more stones or a stone-like granular material having a selected particle size and a binder; depositing a layer of the initial mixture having a predetermined thickness onto a surface of a conveyor belt; performing prepressing and finally obtaining a roughly formed material; systematically depositing layers of initial mixtures onto surface of the conveyor belt in parallel, making each layer not superposed in a direction perpendicular to surface of the conveyor belt, but arranged in sequence in a direction of width of the conveyor belt to form a multi-component or composite mixture structure; conveyor belt conveys the multi-component or composite mixture into a rotated container or support member; after discharged from the rotated container or support member, a final mixture is conveyed to perform subsequent pre-compression and hardening.

A method for producing a ceramic formed body comprises: a wet mixing step of adding a liquid containing water to ceramic raw material mixed powder and subjecting it to wet mixing in a continuous mixer; and an extrusion molding step of feeding the wet mixed powder obtained in the wet mixing step to an extruder by a belt feeder and extruding the wet mixed powder. In the method for producing the ceramic formed body, an amount of the wet mixed powder fed to the extruder is adjusted based on an amount of mass change of the wet mixed powder stored in a reservoir provided between the continuous mixer and the belt feeder.