DE429716C - Process for separating chlorobarium from solutions - Google Patents

Description

Process for separating chlorobarium from solutions. In the manufacture from chlorobarium one usually starts from barium carbonate or sulfur barium by these substances are decomposed with hydrochloric acid or ferric chloride liquor. One receives on this Wise solutions of chlorbarium, from which the solid salt is obtained by evaporation.

It has now been found that evaporation of the chlorobarium liquors for the purpose of obtaining the solid salt can be avoided if the chlorobarium liquors are mixed with sodium chloride. The sodium chloride has a salting-out effect on the chlorobarium, and with the correct choice of the proportions it is easy to separate the predominant amount of the chlorobarium present in a solution in pure form. The excreted chlorobarium is separated from the mother liquor and freed from the adhering mother liquor by covering with chlorobarium liquor. A technically pure chlorobarium with a content of 99 to 100 percent Ba C12-2H_O is thus easily obtained. Exemplary embodiment: 5 liters of chlorobarium solution of 31 Be are advantageously mixed with 1250 g of not too coarse sodium chloride at elevated temperature while stirring. After cooling to room temperature, the precipitated salt is filtered off and covered on the suction filter with 600 cc of chlorobarium solution. The amount of the air-dried salt is 16; og with a content of 99 percent Ba Cl =. 2H2 O, ie around 90 percent of the chlorine barium originally present in the solution has been "salted out". The mother liquor contains 65 g Ba C12 -: 2H, O and 258 g Na Cl per liter.

There are various options for further processing the mother liquor Options. You can either use the chlorine barium it contains with sodium salts, like sodium carbonate, or sodium sulfate to barium carbonate or barium sulfate (blane fixe) and then receives an almost saturated one containing only sodium chloride Lye that can be used elsewhere. The barium can also be replaced by ammonium carbonate or separated by ammonia and carbonic acid as barium carbonate and receives a only a little chlorammonium-containing saline solution, which z. B. in ammonia soda production Can be used.

Claims (2)

PATEIN-T- A1 \ PROVERBS: i. Process for separating chlorobarium from solutions containing such by adding table salt, characterized in that that one expediently the common salt with stirring at elevated temperature in the solution enters. 2. The method according to claim i, characterized in that the amount of table salt so dimensioned that an almost saturated, for other use appropriate saline solution is obtained.