DE138028C - - Google Patents
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- DE138028C DE138028C DENDAT138028D DE138028DA DE138028C DE 138028 C DE138028 C DE 138028C DE NDAT138028 D DENDAT138028 D DE NDAT138028D DE 138028D A DE138028D A DE 138028DA DE 138028 C DE138028 C DE 138028C
- Authority
- DE
- Germany
- Prior art keywords
- zinc
- alkali
- salt
- solution
- sulfite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 18
- 239000011701 zinc Substances 0.000 claims description 17
- 229910052725 zinc Inorganic materials 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 16
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 150000001447 alkali salts Chemical class 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 235000014692 zinc oxide Nutrition 0.000 claims description 6
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 4
- 239000003518 caustics Substances 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 150000003751 zinc Chemical class 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- ZTUVUXVSZXNSCL-UHFFFAOYSA-L zinc;hydrogen sulfite Chemical compound [Zn+2].OS([O-])=O.OS([O-])=O ZTUVUXVSZXNSCL-UHFFFAOYSA-L 0.000 claims description 2
- HSYFJDYGOJKZCL-UHFFFAOYSA-L zinc;sulfite Chemical compound [Zn+2].[O-]S([O-])=O HSYFJDYGOJKZCL-UHFFFAOYSA-L 0.000 claims description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims 3
- 150000003752 zinc compounds Chemical class 0.000 claims 3
- 229940100888 zinc compounds Drugs 0.000 claims 2
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 claims 2
- 229940105847 Calamine Drugs 0.000 claims 1
- 229910052864 hemimorphite Inorganic materials 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L zinc;carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims 1
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 11
- 235000002639 sodium chloride Nutrition 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- GEHJYWRUCIMESM-UHFFFAOYSA-L Sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- -1 alkali metal sulfite Chemical class 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 4
- 235000010265 sodium sulphite Nutrition 0.000 description 4
- GBAOBIBJACZTNA-UHFFFAOYSA-L Calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 3
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 3
- 235000010261 calcium sulphite Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 239000011592 zinc chloride Substances 0.000 description 3
- 235000005074 zinc chloride Nutrition 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L Zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910007541 Zn O Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-M hydroxidodioxidosulfidosulfate(1-) Chemical compound OS([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-M 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229940001607 sodium bisulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bekanntlich kann aus Natriumsulfit einfach durch Hinzufügen von Aetzkalk Calciumsulfit und Aetznatron hergestellt werden. Schon wiederholt ist deshalb versucht worden, Sulfite zur Darstellung von Aetzalkalien und Carbonaten zu benutzen (vergl. Tauber, Patentschrift 43921).As is well known, calcium sulfite can be made from sodium sulfite simply by adding caustic lime and caustic soda. It has therefore been tried repeatedly To use sulfites for the preparation of caustic alkalis and carbonates (see Tauber, patent specification 43921).
Die Versuche blieben aber erfolglos, weil die Darstellung von Alkalisulfit zu umständlich und kostspielig war. In Nachfolgendem wird ein neues Verfahren beschrieben, welches Alkalisulfit in aufserord entlich billiger Weise erzeugt und dabei die Gewinnung sehr werthvoller metallurgischer Nebenprodukte ermöglicht bezw. bei welchem Alkalisulfit selbst als kostenloses Nebenprodukt gewonnen wird.The attempts were unsuccessful because the preparation of alkali sulfite was too cumbersome and was costly. In the following a new method is described which Alkali sulphite produced in an extraordinarily cheap manner, and its extraction very valuable metallurgical by-products enables respectively. at which alkali sulfite itself as free by-product is obtained.
Metalloxyde bezw. wasserunlösliche Verbindungen solcher, wie Carbonate und Silicate, insonderheit Zinkoxyd oder Materialien, die solches enthalten, wie geröstete arme Zinkerze, werden der Wirkung von schwefliger Säure bezw. Röstgasen ausgesetzt, so dafs sich Monosulfite oder bei weiterer Zuleitung von schwefliger Säure Bisulfite bilden können, die sodann durch Alkalisalz, z. B. Kochsalz, wenn es sich um die Herstellung von Natriumsulfit u. dergl. handelt, oder Chlorkalium (welches dieselbe Wirkung erzeugt), wenn es sich um die Darstellung der entsprechenden Kaliumverbindungen handelt, in Alkalisulfit umgesetzt werden. Die Behandlung mit schwefliger Säure geschieht zweckmäfsig von vornherein in Gegenwart von Wasser und Alkalisalz, z. B. Kochsalz, wobei durch doppelte Umsetzung sogleich eine Lösung von Metallchlorid und Natriumsulfit bezw. -bisulfit entsteht, welche von überschüssigem Oxyd bezw. Erzrückstand getrennt werden kann. Aus dieser gemischten Lösung kann Alkalisulfit durch Eindampfen bezw. durch Sättigen mit Alkalichlorid, z. B. Kochsalz abgeschieden werden, da es in concentrirter Kochsalzlösung schwer löslich ist. Dies Eindampfen kann aber auch erspart werden, wenn von vornherein ein genügender Ueberschufs von Kochsalz verwendet wurde, wobei Natriumsulfit bezw. -bisulfit im Erzrückstande bleibt und von ihm durch Auswaschen getrennt werden kann. Das Alkalisulfit, gelöst oder fest, rein oder in Mischung mit anderen Stoffen, wird, soweit es möglich, von enthaltenem Metallsalz, z.B. Chlorzink, befreit und kann dann als Sulfit direct benutzt oder durch 5 O2 bezw. S in Bjsulfit oder Hyposulfit oder Hydrosulfit in bekannter Weise verwandelt werden.Metal oxides respectively. water-insoluble compounds such as carbonates and silicates, in particular zinc oxide or materials that contain such, such as roasted poor zinc ores, the action of sulphurous acid respectively. Exposed to roasting gases, so that monosulphites or bisulphites with further addition of sulphurous acid can form. B. table salt, if it is a matter of the production of sodium sulfite and the like, or potassium chloride (which produces the same effect), if it is the preparation of the corresponding potassium compounds, can be converted into alkali metal sulfite. The treatment with sulphurous acid is expedient from the outset in the presence of water and an alkali salt, e.g. B. table salt, with a solution of metal chloride and sodium sulfite BEZW by double conversion. -bisulfite arises, which respectively from excess oxide. Ore residue can be separated. From this mixed solution alkali metal sulfite can bezw by evaporation. by saturation with alkali chloride, e.g. B. saline, as it is sparingly soluble in concentrated saline solution. This evaporation can also be spared if a sufficient excess of table salt was used from the outset, with sodium sulfite or. -bisulfite remains in the ore residue and can be separated from it by washing. The alkali sulfite, dissolved or solid, pure or mixed with other substances, is freed from the metal salt contained, for example zinc chloride, as far as possible and can then be used directly as sulfite or replaced by 5 O 2 or. S can be converted into bysulfite or hyposulfite or hydrosulfite in a known manner.
Es kann auch im Erz bleiben und bei weiterer Verschmelzung des Erzes als Flufsmittel dienen. Bei der grofsen Billigkeit seiner Herstellung besonders auf Zinkhütten kann es aber, in fester oder flüssiger Form gewonnen, auch zur Darstellung von Aetzalkalien und Carbonaten verwendet werden, nach folgenden bekannten Formeln:It can also remain in the ore and, if the ore is further fused, as a flux to serve. In view of the great cheapness of its manufacture, especially in zinc smelters, it can but, obtained in solid or liquid form, also for the representation of caustic alkalis and Carbonates are used according to the following known formulas:
Na2 S O3 + Ca (O H)2 = Na 2 SO 3 + Ca (OH) 2 =
Ca S O3 + 2 Na O H, Ca SO 3 + 2 Na OH,
Na2 S O3+ Ca (O H)2 + C O2-Na 2 SO 3 + Ca (OH) 2 + CO 2 -
CaS O3 + Na2C O3 + H2 O.CaS O 3 + Na 2 CO 3 + H 2 O.
Als Nebenprodukt wird hierbei Ca S O3 gewonnen, welches in Cellulosefabriken gebraucht werden kann oder das nach Gutzkow's Verfahren zur Darstellung von Natriumbisulfit dienen kann. Ca S O 3 is obtained as a by-product, which can be used in cellulose factories or which, according to Gutzkow's method, can be used to prepare sodium bisulfite.
Die vom Alkalisulfit oder -bisulfit abfiltrirten Metallsalzlösungen, z. B. Chlorzink, können nach vorheriger Zerstörung oder Entfernung des etwa verbliebenen Alkalisulfites nach Hoepfner's Verfahren zur elektrolytischen Gewinnung von Chlor und Zink oder zur Darstellung von Zinkoxyd u. s. w. dienen, wobei die entzinkten, Alkalisalz besonders Alkalichlorid enthaltenden Lösungen wieder in den Procefs zurückkehren können.Which filter off the alkali sulfite or bisulfite Metal salt solutions, e.g. B. zinc chloride, can after previous destruction or removal of any remaining alkali sulphite according to Hoepfner's method for electrolytic Extraction of chlorine and zinc or for the preparation of zinc oxide and so on the dezincified, alkali salt, especially alkali chloride-containing solutions back into the Procefs can return.
Die Gewinnung von saurem schwefligsaurem Natron aus geröstetem Zinkerz kann beispielsweise zweckmäfsig folgendermafsen ausgeführt werden.The extraction of acid sulphurous soda from roasted zinc ore can for example appropriately be carried out as follows.
290 g eines gerösteten Zinkerzes, enthaltend 138 g Zink, aufserdem geringe Mengen Blei, Kupfer und Silber, werden mit 250 g festem Na Cl und 750 cbcm concentrirter Na C/-Lösung gemischt, worauf die Mischung mit S O2 behandelt wird. Hierbei gehen etwa 122 g Zink als Chlorzink in Lösung, während 170 g Na H S O3 in festem Zustande im Rückstand zurückbleiben, die durch Auswaschen mit Wasser als wässrige Lösung gewonnen werden.290 g of a roasted zinc ore containing 138 g of zinc, on addition small amounts of lead, copper and silver, are mixed with 250 g of solid Na Cl and 750 cubic centimeters of concentrated Na C / solution, is treated and then the mixture with S O 2. About 122 g of zinc go into solution as chlorine zinc, while 170 g of Na HSO 3 remain in the solid state in the residue, which is obtained as an aqueous solution by washing out with water.
Wird das Erz nur in verdünnterer Kochsalzlösung suspendirt, so erhält man nach dem Behandeln mit S O2 eine vorwiegend Zinksulfit bezw. Zinkbisulfit enthaltende Lauge, aus der durch Zusatz von festem Kochsalz und weiterem Einleiten von 5 O2 das Na H S O3 in festem Zustande als ein weifser Niederschlag gewonnen wird. Die Abscheidung von NaHSO3 mittels SO2 gelingt auch bei Zusatz eines anderen Natriumsalzes, z. B. Na2 S O4. Es ist nur nothwendig, dafs das entsprechende Zinksalz wie in diesem Falle das Zinksulfat leicht löslich ist.If the ore is only suspended in a more dilute saline solution, then after treatment with S O 2, a predominantly zinc sulfite resp. Lye containing zinc bisulfite, from which the Na HSO 3 is obtained in a solid state as a white precipitate by adding solid common salt and further introduction of 5 O 2. The separation of NaHSO 3 by means of SO 2 is also possible with the addition of another sodium salt, e.g. B. Na 2 S O 4 . It is only necessary that the corresponding zinc salt, as in this case the zinc sulphate, be readily soluble.
Die von dem Alkalisulfit bezw. -bisulfit abfiltrirte Zinklösung ergiebt nach Neutralisation der freien S O2 durch Zn O bezw. geröstetes Zinkerz und Ausfällung der darin enthaltenden Reste von schwefligsauren und schwefelsauren Salzen (durch Chlorcalcium oder auch vortheilhaft durch Chlorblei) ein Gemisch von Zink- und Natriumchlorid, welches noch das im Erz enthaltende Silber als Chlorsilber in Lösung enthält.The respectively from the alkali sulfite. -bisulfite filtered off zinc solution gives after neutralization of the free S O 2 by Zn O or. Roasted zinc ore and precipitation of the residues of sulphurous and sulfuric acid salts contained therein (by calcium chloride or advantageously also by chlorine lead) a mixture of zinc and sodium chloride, which still contains the silver contained in the ore as chlorine silver in solution.
Nach Fällung des Silbers durch Zinkstaub kann nach Hoepfner's Verfahren der Zinkelektrolyse aus dieser Lösung das Zink als Metall und das Chlor in Form von Chlorkalk gewonnen werden und die entzinkte, Alkalichlorid enthaltende Lauge in das Verfahren zurückkehren, wodurch sich dasselbe äufserst rentabel gestaltet.After the silver has been precipitated by zinc dust, zinc electrolysis can be carried out using Hoepfner's method from this solution the zinc as metal and the chlorine in the form of chlorinated lime and the dezincified, alkali chloride Return containing liquor to the process, making the same extremely profitable.
Aehnlich können Metallsalzlösungen, z. B. Chloridlösungen von Eisen, Kupfer, Nickel, Kadmium u. s. w., erzeugt werden.Similarly, metal salt solutions, e.g. B. chloride solutions of iron, copper, nickel, Cadmium and so forth.
Bei diesem Verfahren können fünf werthvolle Produkte erzeugt werden:With this process five valuable products can be created:
1. zinkfreier Rückstand,1.zinc-free residue,
2. Zink, chemisch rein,2. Zinc, chemically pure,
3. freies Chlor,3. free chlorine,
4. Hydrate oder Carbonate der Alkalien,4. hydrates or carbonates of alkalis,
5. CaSO3 schwefligsaurer Kalk.5. CaSO 3 sulphurous lime.
Durch die Erzeugung von Aetzalkalien und Calciumsulfit als kostenloses Nebenprodukt wird dieses Verfahren befähigt, die bisherige Kochsalzelektrolyse zu verdrängen.By producing caustic alkalis and calcium sulfite as a free by-product this process will be able to replace the previous common salt electrolysis.
Da ι t Zink ungefähr 2 t Soda liefern würde, so würden 450 000 t Zink, d. h. die jährliche Produktion der Welt an Zinkmetall, 900 000 t Soda liefern können, was ungefähr dem Weltkonsum an Soda gleichkommt.Since ι t zinc would supply about 2 t soda, 450,000 t zinc, i.e. H. the annual The world's production of zinc metal, can supply 900,000 tons of soda, which is roughly the world's consumption equivalent to soda.
Mithin würde dieses Verfahren technisch wie commerciell auch die Ammoniaksoda verdrängen können, zumal bei dem beschriebenen Sulfitsodaverfahren erstens Aetznatron statt Carbonat erzeugt wird, zweitens werthvolles Calciumsulfit statt werthloses Chlorcalcium gewonnen wird, drittens keine Kochsalzvergeudung eintritt.This process would therefore displace ammonia soda both technically and commercially can, especially with the sulfite soda process described, firstly, caustic soda instead of carbonate Second, valuable calcium sulfite is obtained instead of worthless calcium chloride thirdly, there is no waste of table salt.
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| DE553051C (en) | Extraction of copper, zinc and precious metals from alkaline solutions containing chloride and sulfate | |
| DE164725C (en) | ||
| DE488582C (en) | Processing of lyes from sulfur pebbles and similar ores with recovery of the metals contained in the lyes | |
| DE96158C (en) | ||
| DE506343C (en) | Extraction of zinc from low-zinc alkalis of chlorinated roasted ores |