DE307309C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- JVe 307309 ~ CLASS ία. GROUP 25 ..

KARL SUNDBERG in STOCK HOLM, Sweden.

Patented in the German Empire on February 2, 1918.

The invention relates to a method for separating each of these minerals from a substance (for example an ore or a slice) which contains one or more minerals adhering to the foam. A foam-adhering mineral is understood here as one which _{mixes 1X} in a finely divided state with water and foam-forming agent after air has been blown into it

ίο or any other gases generated by the Foam raised to the surface of the mixture will. The procedure is for example for the separation of lead luster and zinc blende in a lead-zinc slice, or iron luster and copper pebbles in a copper-containing blood stone ore, or lead luster, zinc blende and copper pebbles can be used in a lead-zinc-copper layer,

The invention is based on the different tendencies of the various minerals to float with the foam produced in the foaming process, in that when an ore containing several minerals is treated in a multi-chamber foaming apparatus, the ScrAum in the first chamber or chambers significantly more of the mineral, entrained by the foam on leichtesten as comprising of one, \ while the other mineral contrast to the last chamber in the barren

~. accumulates in the last chambers. The relationship between the amounts of the various minerals in the foam of the various earn-

... ■■ The interior of the foaming apparatus can in fact be determined once and for all because, all other things being equal, it is proportional to the ratio between the mineral constituents of the substance to be treated. If, therefore, when treating an ore mixture of 25 percent of two minerals in a multi-chamber foam apparatus, the foam in the first chamber contains 50 percent of one and 5 percent of the other mineral, this ratio will be if the ore mixture is 30 percent of the one and 10 percent the other mineral contains;

30-50
5.10

= 30: 1

instead of. of the above mentioned 50: 5.,

The invention consists in that the mineral mixture in the usual way in a multi-chamber 'Foaming apparatus is subjected to the' foaming process, and that the foam from the first and last chamber or some of the first and last combs of the Apparatus (which foams therefore contain a predominant amount of every mineral) according to the first chamber is brought a further foam apparatus, where the foam is again exposed to the foam process and that Product from the first chamber of one apparatus and the last chamber of the other removed and collected separately, while the foam jyon the intervening Chambers of the first and the other two apparatus after the first chamber of the first or all apparatus, to be treated again there. ,

In the drawings, Fig. 1 schematically illustrates the process on a fabric

70

applied in which two minerals are present in equal proportions. For example, three five-chamber apparatuses a, b and c are first used to carry out the method. During the foaming process in the apparatus α , the two minerals in the foam are distributed, for example, in the ratio 1: 4 in the first chamber; 1: 2 in the second, 1: 1 in the third, 2: 1 in the fourth and 4: 1 in the fifth chamber, as indicated in the drawing. The foam formed is brought from the first chamber of the apparatus α to the first chamber in the apparatus b , where a concentration of the mineral that is most easily carried along by the foam takes place. From this chamber this mineral, which is already to a considerable extent separated from the other (for example in the ratio 16: r), is removed, while the remaining material undergoes repeated treatment in the other chambers of apparatus b and the foam as that in chambers 2 to 4 of the apparatus q generated after the first chamber of the apparatus α or optionally after the first chamber of the apparatus b is returned and treated again. In the same way, the foam is passed from the last chamber 5 of the apparatus α to the first chamber of the apparatus c and there subjected to the foaming process. The foam enriched with the other mineral is removed from the last chamber 5 of this apparatus. feint, while the foam from the chamber 1 to 4 of the apparatus c to the first chamber of the 'apparatus, α or optionally the apparatus c is returned.

The foam can also be supplied from an intermediate chamber 3 in the apparatuses δ and c after the first chamber 1 of said Apparatus instead of chamber 1 of the apparatus α can be returned. In Fig. 1 the approximate proportions between the Minerals at the various stages of the process and the ways in which the Foam is led out of the apparatus, indicated.

In this way, the minerals can be separated in such a way that the channel in the first chamber of the apparatus b contains 16 parts of one mineral to 1 part of the other, while the channel in the last chamber of the apparatus c contains 1 part of the first-mentioned mineral Contains 16 parts of the other. By using even more foam machines, a further concentration can of course be achieved.

In Fig. 2 is also schematically illustrated the process applied to a fabric with three minerals of different adhesion to the foam. The foam machines are labeled a, b, c, d, e and f.

First the substance in apparatus a is subjected to the foaming process and the foam from the first chamber of this apparatus is brought to the first chamber of apparatus b, the foam from the last chamber of apparatus α to the first chamber of apparatus c. The foam from the other chambers 2 to 4 of the apparatus α is returned to chamber 1 of the same apparatus and treated there again. The foam from the first chamber 1 of the apparatus b (which foam contains the most easily entrained mineral) is collected, and the foam from the last chamber 5 of said apparatus is brought to the first chamber 1 of an apparatus e , while the foam from the Intermediate chambers 2 to 4 of the apparatus b is returned to the chamber ι of the apparatus b or α in order to be subjected to a renewed treatment there. In the same way the foam is brought from the first chamber of the apparatus c to the first chamber of the apparatus e and the foam from the last chamber 5 of the apparatus c (which is enriched with the least foam-adhering mineral) is removed and collected. The foam from the intermediate chambers 2 to 4 of apparatus c is returned to the first chamber of apparatus α or c, the foam of which, like that of the last chamber of apparatus δ, contains more of the mineral whose foam adhesion is between that of the other two minerals. In your apparatus e , the foam is subjected to a new foaming process, and the foam from chamber 1 of this apparatus is brought to chamber 1 of apparatus d , from which the foam rich in mineral with great foam adherence is discharged to with that of the Chamber 1 of the apparatus b discharged to form a streak rich in the mentioned mineral. From the last chamber 5 of the apparatus b , the foam rich in the mineral with the lowest foaming capacity is brought to the first chamber of the apparatus f , in which it is treated, while from the last chamber 5 of this apparatus that of the mineral with the the least foam adhesion is removed and brought together with that obtained from the last chamber of apparatus c. Both in apparatus d and in e and f , the foam is returned from chambers 2 to 4 to chamber 1 of each apparatus. In the foam of the last chamber of the apparatus d and the first chamber of the apparatus

Claims (2)

rates f is the mineral whose foam attachment is between that of the other two minerals, concentrated; This foam is therefore removed by itself, so that the mineral contained therein can be obtained in an essentially enriched degree: Of course, in the exemplary embodiment according to FIG. 2, the enrichment process can also be completed by using even more apparatus. From these examples it can be seen that, according to the invention, it is in any case: possible; to separate the foam-adhering constituents of the material in the usual multi-chamber foam apparatuses by subjecting the foam from the first and last chambers (or some of the first and last chambers) of each apparatus to the Schaurriprocess in other foam apparatuses in which the foam from ι from the first chamber of one apparatus and from the last chamber of the other apparatus is either accumulated as a finished product or subjected to repeated treatment in still other Schaiimapparaten, while the foam of the intermediate chambers of the apparatuses is treated again in the same or in a previous apparatus. The process can, however, also be applied to substances which also contain minerals which do not adhere to the foam. In such a case the substance is first treated in a foaming apparatus and the foam from the first chamber of this apparatus is collected and treated again in the first chamber of a second such apparatus, etc., while the liquid with the mineral which does not adhere to the foam is in a special foaming apparatus treated and the foam produced is brought to other foam devices to be treated again. In this way the original substance can be broken down into its non-foam-adhering components and into the foam-adhering minerals, which the latter can be obtained separately from one another by the foaming process. For example, if a layer containing galena and zinc blende is treated by the foaming process, the foam in the first chamber of the apparatus will contain substantially, borrowed more, lead than zinc, while the non-foaming liquid will contain more zinc than lead. The lead is enriched by a repeated foaming process, as * also by treating the non-foaming liquid by means of the foaming process, lead can be separated from it, whereby., The zinc is enriched, so that the final; As a result, a zinc-containing lead streak and a low-lead zinc streak can be obtained. ■ -. · ■ Patent claims: V 1. A method to get through the ^ foam process from a substance which consists of several minerals adhering to the foam, optionally mixed with other minerals which are not adhering to the foam; the first-mentioned minerals separately separate, characterized in that the foam process is performed in multi-chamber <foam apparatuses such that the foam from the first chamber or the first chamber and the last chamber or to the last chambers of each apparatus a repeated foam process in a respective following Foaming apparatus is subjected, while the foam from the intermediate chambers of the apparatus is returned to the first chamber of the same or a preceding apparatus 'will be treated there again. 2. In connection with the method according to the «claim 1, a method thereby marked that-of that Foam of the last chamber of the first apparatus after the material not taken along is brought to a second apparatus and there again subjected to the foaming process is, and that the foam produced is brought together with the one already obtained and, if necessary, several times the claim ι is treated while the residue not adhering to the foam is collected for itself. -. 1 sheet of drawings.