AT97916B - Process of recovering soda and copper from cellulose sludge containing heavy metals, especially copper. - Google Patents
Process of recovering soda and copper from cellulose sludge containing heavy metals, especially copper.Info
- Publication number
- AT97916B AT97916B AT97916DA AT97916B AT 97916 B AT97916 B AT 97916B AT 97916D A AT97916D A AT 97916DA AT 97916 B AT97916 B AT 97916B
- Authority
- AT
- Austria
- Prior art keywords
- copper
- heavy metals
- containing heavy
- sludge containing
- cellulose
- Prior art date
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 11
- 229910052802 copper Inorganic materials 0.000 title claims description 11
- 239000010949 copper Substances 0.000 title claims description 11
- 239000010802 sludge Substances 0.000 title claims description 7
- 229920002678 cellulose Polymers 0.000 title claims description 5
- 239000001913 cellulose Substances 0.000 title claims description 5
- 229910001385 heavy metal Inorganic materials 0.000 title claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 239000002699 waste material Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000005749 Copper compound Substances 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 150000001880 copper compounds Chemical class 0.000 claims 1
- 238000001556 precipitation Methods 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Description
<Desc/Clms Page number 1>
Verfahren, aus schwermetall-vor allem kupferhaltigem Zelluloseschlamm das Natron und das Kupfer wiederzugewinnen.
Natronlauge löst bei der Einwirkung auf Holzstoff und Zellulose organische Stoffe heraus. Diese organischen Stoffe können durch Zusatz von Schwermetallsalzen, wie Kupfersulfat. aus der Abfallauge gefällt werden (österr. Patent Nr. 62640). Nach dem Abpressen der Lauge von dem Schlamm bildet dieser einenlästigen Abfall, mit dem wertvolle Stoffe wie Natron und Kupfer in bisher nicht verwendungsfähiger Form verloren gehen oder aus dem sie nur auf umständliche Art nutzbringend wiedergewonnen werden können. Es wurde nun eine Aufarbeitung des Schlammes gefunden, bei der in überraschend einfacher Weise das Kupfer und Natron wiedergewonnen werden. Das Verfahren besteht darin, dass man den Schlamm in Autoklaven eine bestimmte Zeit erhitzt, z. B. drei Stunden auf 3 Atm.
Dabei geht der organische Anteil des Niederschlages in Lösung und das Kupfer fällt vollständig als Kupferoxydul bzw. metallisches Kupfer aus. Man erhält eine Lauge, die trotz ihrer braunen Färbung für viele Zwecke noch gut verwendbar ist, und sämtliches Kupfer als Kupferoxydul wieder zurück. Bei geringem Druck muss man entsprechend länger erhitzen. Bei Anwendung von hohem Druck kann man die Erhitzung abkürzen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process of recovering soda and copper from cellulose sludge containing heavy metals, especially copper.
Caustic soda dissolves organic matter when it acts on wood pulp and cellulose. These organic substances can be removed by adding heavy metal salts such as copper sulfate. can be precipitated from the eye of waste (Austrian patent no. 62640). After the lye is pressed from the sludge, it forms an annoying waste with which valuable substances such as sodium bicarbonate and copper are lost in a previously unusable form or from which they can only be recovered in a laborious way. A work-up of the sludge has now been found in which the copper and soda are recovered in a surprisingly simple manner. The method consists in heating the sludge in autoclaves for a certain period of time, e.g. B. three hours at 3 atm.
The organic part of the precipitate goes into solution and the copper is completely precipitated as copper oxide or metallic copper. A lye is obtained which, despite its brown color, can still be used for many purposes, and all of the copper is returned as copper oxide. If the pressure is low, you have to heat for longer. If high pressure is used, the heating can be shortened.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE97916X | 1922-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT97916B true AT97916B (en) | 1924-09-25 |
Family
ID=5646571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT97916D AT97916B (en) | 1922-09-20 | 1923-05-09 | Process of recovering soda and copper from cellulose sludge containing heavy metals, especially copper. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT97916B (en) |
-
1923
- 1923-05-09 AT AT97916D patent/AT97916B/en active
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