Abstract: The present invention relates to a process of purifying a residue from an industrial process using calcium ions to obtain a purified brine, comprising: (a) mixing the residue comprising sulfate salts from the industrial process with calcium salts; (b) separating insoluble species and/or precipitates from the suspension from (a); (c) adding one or more selected from C02, carbonates, bicarbonates, hydrogen carbonates or fluorinated salts into the filtrate from (b) to remove excess calcium ions; and (d) separating precipitates from the suspension from (c) to obtain a purified brine. Strontium and/or barium salts, which typically exist in the residue, may also be removed from the residue by using the present process. According to the present method, calcium ions are effectively removed from the brine. Thus, a deposition of calcium ions on devices, which are used in the further processes such as crystallization or electrolysis, can be avoided.

Abstract: Granule comprising an agglomerate of particles of a mineral substance. The agglomerate is coated with a monolithic outer layer, which provides it with improved abrasion resistance. Powder comprising granules according to the invention. Process for manufacturing the powder according to the invention, which includes an agglomeration step and a coating step.

Abstract: A method of analyzing the condition of a motor driven rotating system using a current waveform produced by the motor. The motor position is initially identified from the current waveform produced by the motor and more particularly, a step of identifying the segment switching of the motor is performed to identify the system position with reference to individual rotations of the motor. The current waveform is then normalized to a preselected number of data points, each rotation being described by the preselected number of data points, such that the current waveform is converted from the time domain to a spatial domain corresponding to positions of the system. Subsequently, a frequency analysis is performed to identify frequencies corresponding to characteristics of the system, including calculating a frequency dependent distribution of the normalized current waveform to determine the energy content of the waveform at particular frequencies.

Abstract: Abrasion-resistant granules of an agglomerated mineral substance, powder comprising such granules and process for manufacturing it Granule comprising an agglomerate of particles of a mineral substance. The agglomerate is coated with a monolithic outer layer, which provides it with improved abrasion resistance.

Abstract: A method of analyzing the condition of a motor driven rotating system using a current waveform produced by the motor. The motor position is initially identified from the current waveform produced by the motor and more particularly, a step of identifying the segment switching of the motor is performed to identify the system position with reference to individual rotations of the motor. The current waveform is then normalized to a preselected number of data points, each rotation being described by the preselected number of data points, such that the current waveform is converted from the time domain to a spatial domain corresponding to positions of the system. Subsequently, a frequency analysis is performed to identify frequencies corresponding to characteristics of the system, including calculating a frequency dependent distribution of the normalized current waveform to determine the energy content of the waveform at particular frequencies.