Abstract: A method is used for treating a salt solution using a treatment system. The treatment system has an evaporation device to which the salt solution produced in an upstream operation is supplied. A crystallizate suspension having kainite, halite, and sylvite is obtained from the evaporation device, and the kainite is then separated from the crystallizate suspension. The method for separating the kainite from the crystallizate suspension has at least the following steps: supplying the crystallizate suspension to a preliminary classifying device in which kainite is partly separated from the crystallizate suspension by means of a preliminary removal process based on the particle size of the kainite, thereby obtaining a kainite-reduced fraction, and transferring the kainite-reduced fraction to a flotation device in which the remaining content of kainite is separated from the kainite-reduced fraction.

Abstract: The invention relates to a process for selective flotation of kainite from crushed crude potash salts or, for example, from crystallized salt mixtures obtained by evaporation processes, which in addition to kainite may contain further minerals such as halite, sylvine and other salt minerals, for example, in order to produce a kainite concentrate fraction and a residues fraction. The separation process is characterized in that the crushed or crystallized salt mixture is intensively mixed as a crystallizate suspension with a combination of conditioning agents consisting of a sulfated fatty acid or its alkali metal salt as collecting reagent and a frothing agent known for flotation (for example, glycol ether, monohydric aliphatic alcohols, terpene alcohols, polyglycol ethers, etc.) and is then separated by agitator-driven or pneumatic flotation into a kainite concentrate fraction and a residues fraction. The resulting fractions may be further processed in downstream processes.

Abstract: The invention relates to a process for selective flotation of kainite from crushed crude potash salts or, for example, from crystallized salt mixtures obtained by evaporation processes, which in addition to kainite may contain further minerals such as halite, sylvine and other salt minerals, for example, in order to produce a kainite concentrate fraction and a residues fraction. The separation process is characterized in that the crushed or crystallized salt mixture is intensively mixed as a crystallizate suspension with a combination of conditioning agents consisting of a sulfated fatty acid or its alkali metal salt as collecting reagent and a frothing agent known for flotation (for example, glycol ether, monohydric aliphatic alcohols, terpene alcohols, polyglycol ethers, etc.) and is then separated by agitator-driven or pneumatic flotation into a kainite concentrate fraction and a residues fraction. The resulting fractions may be further processed in downstream processes.

Abstract: The invention presented concerns a process for the manufacture of coated, nano-scale, hydrotalcites, where the individual, primary, nano-scale hydrotalcite particles are coated. In order to obtain the corresponding hydrotalcite particles in coated, nano-scale form, the additive precipitation reaction is employed invention-related. Every primary particle indicates its own coating in this case. In a further aspect, the registration is directed toward coated primary, nano-scale, hydrotalcite particles, in particular obtainable in accordance with the invention-related process. A further aspect of the invention is directed toward composites containing nano-scale hydrotalcites, in particular hydrotalcites manufactured in accordance with the invention presented. Finally the registration presented is directed towards compositions containing mixtures of magnesium hydroxide and hydrotalcite.

Abstract: The invention relates to a method for reducing the losses of valuable substances in mineral processing, wherein a mineral mixture, dry or suspended, has a grain fraction with a tailings portion and a superficial valuable material portion after a first separation stage, and the tailings portion quantitatively exceeds the valuable material portion, the mineral mixture being suspended, insofar as it is not already a suspension, for the agglomeration of grains of the grain fraction with the valuable material portion, and a substantially hydrophobic agent with a content of anionic or cationic amphiphilic molecules is added to the suspended mineral mixture in order to wet the surface of the valuable substance portion to form agglomeration bridges between the valuable material portions of the grains, wherein the mineral mixture is routed in a solution saturated with the valuable material portion and the tailings to a wet separation stage for classification into a fraction richer in valuable material and a fraction l

Abstract: The invention presented concerns a process for the manufacture of coated, nano-scale, hydrotalcites, where the individual, primary, nano-scale hydrotalcite particles are coated. In order to obtain the corresponding hydrotalcite particles in coated, nano-scale form, the additive precipitation reaction is employed invention-related. Every primary particle indicates its own coating in this case. In a further aspect, the registration is directed toward coated primary, nano-scale, hydrotalcite particles, in particular obtainable in accordance with the invention-related process. A further aspect of the invention is directed toward composites containing nano-scale hydrotalcites, in particular hydrotalcites manufactured in accordance with the invention presented. Finally the registration presented is directed towards compositions containing mixtures of magnesium hydroxide and hydrotalcite.