TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: In the method, at least three wetting steps, which are interspersed in each case by a position change of the silicon material, take place in the purification process. The moistening of silicon material with the process medium takes place also during the change of position. In the downstream of a first purification process, at least one or more similarly-running purification processes with different process media are intended, in which at least a first moistening of the silicon material with the process medium, at least a change of position of the silicon material and at least a further moistening of the silicon material with the process medium are intended. In the method, after at least one, preferably after every one of the purification processes, a rinsing process, preferably with deionized water, is carried out with a rinsing system. The purification processes are carried out with an essentially continuous and automated transport of the silicon material, with an essentially continuous moistening of the silicon material with the process medium and with at least a change of position of the silicon material, preferably in a purification chamber (5). The silicon material is transferred from a first conveyer system to a below-lying second conveyer system, for changing the spatial position of the silicon material, so that the silicon material falling from the first conveyer system changes its spacial position and lands on the second conveyer system. A drying process for the silicon material is carried out after at least a purification process and/or after at least a rinsing process.Preferred Components: The process medium is hydrofluoric acid, hydrochloric acid, nitric acid or caustic potash solution, preferably in aqueous solution. The aqueous hydrofluoric acid or aqueous nitric acid, aqueous caustic potash solution and aqueous hydrochloric acid are used in an aqueous state as process medium for the first, second and the third water purification process respectively.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The conveyer system is implemented in a length-wise elongated manner. The conveyer system exhibits a circulating, endless conveyor belt with an upper run and a lower run, where the upper run is aligned at a pointed angle to the horizontal and is intended for transport of the silicon material. The conveyor is composed of a material that is permeable for the process medium, preferably a mesh material. The flip-over mechanism for a change of position of the silicon material, is built as at least a guide path, which is arranged at a pointed angle to the transportation direction and which is aligned orthogonally and adjacent to a surface of the upper run. The flip-over mechanism is formed through an arrangement of at least two conveyors that are preferably arranged, overlapping one another in the transportation direction, in order to cause a change of the position of the silicon material. In the device, at least an automatic conveyer system, at least a flip-over mechanism and at least two wetting mechanisms are accommodated in an at least essentially closed purification chamber, in order to prevent the leakage of the process medium, where preferably a rinsing system is integrated into the purification chamber. EXAMPLE - No suitable example given.