DE593427C - Process for the production of pure paper stock from printed waste paper - Google Patents
Process for the production of pure paper stock from printed waste paperInfo
- Publication number
- DE593427C DE593427C DE1930593427D DE593427DA DE593427C DE 593427 C DE593427 C DE 593427C DE 1930593427 D DE1930593427 D DE 1930593427D DE 593427D A DE593427D A DE 593427DA DE 593427 C DE593427 C DE 593427C
- Authority
- DE
- Germany
- Prior art keywords
- production
- paper
- pure
- printed waste
- printed
- 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.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
- D21C5/025—De-inking
- D21C5/027—Chemicals therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Paper (AREA)
- Treatment Of Sludge (AREA)
Description
»ibÜotheek“IbÜotheek
luvluv
16MPiIl 193416MPiIl 1934
AUSGEGEBEN AM 26. FEBRUAR 1934ISSUED ON FEBRUARY 26, 1934
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
KLASSE 55 b GRUPPE 4CLASS 55 b GROUP 4
Zusatz zum Patent 523 864Addendum to patent 523 864
Patentiert im Deutschen Reiche vom 6. April 1930 ab
Das Hauptpatent hat angefangen am 19. November 1929.Patented in the German Empire on April 6, 1930
The main patent started on November 19, 1929.
Im Hauptpatent wurde vorgeschlagen, bei der Herstellung reinen Papierstoffes aus bedrucktem Altpapier auf kaltem Wege als Behandlungsmittel Kaustizierschlamrn oder aber Magnesiumhydroxyd zu verwenden, das beispielsweise aus Carnallitablauge durch Zugabe von alkalischen Laugen oder auch von Kaustizierschlamm gebildet wird. Vor allem bei der Verwendung von Kaustizierschlamm kann sowohl die kolloidale Beschaffenheit als auch die weiße Farbkraft der darin enthaltenen Silicate und Carbonate ungehemmt zur Wirkung gelangen. In the main patent it was proposed to produce pure paper stock from printed paper Recovered paper by cold means as a treatment agent Kaustizierschlamrn or else To use magnesium hydroxide, for example from carnallite waste liquor by adding is formed by alkaline lyes or causticizing sludge. Especially with the Use of caustic mud can affect both the colloidal nature and the white color strength of the silicates and carbonates contained in it reach their effect unchecked.
In diesem Patent wurde ferner darauf hingeis wiesen, daß auch die Anwesenheit anderer erdalkalischer Salze in dem Kaustizierschlamm usw. von Vorteil ist, nämlich solcher Salze, die Adhäsionsfähigkeit und weiße Farbkraft besitzen. This patent also indicated that the presence of other alkaline earth Salts in the causticizing sludge, etc., namely those salts which have adhesiveness and white coloring strength.
Die Tatsache,' daß im Kaustizierschlamm, insbesondere in dem in Strohzellstoffbetrieben anfallenden, Suspensionen derartiger Salze beigemischt sind, sowie die Tatsache, daß das durch Behandlung von Carnallitablauge mit Kaustizierschlamm . gebildete Magnesiumhydroxyd Suspensionen derartiger Salze enthält, machen gerade diese Lösungsmittel als solche so geeignet. • Es wurde nun gefunden, daß sowohl die Wirkung von Kaustizierschlamm als auch die Wirkung von Magnesiumhydroxyd wesentlich gesteigert werden kann, wenn diesen Behandlungsmitteln noch Suspensionen von Calcium- oder Magnesiumsilicat, Bariumsulfat, Bariumcarbonat, einfachem oder basischem Magnesiumcarbonat einzeln oder im Gemisch untereinander zugegeben werden. Die Verwendung von Erdalkalisilicaten, -sulfaten oder -carbonaten bei der Herstellung reinen Papierstoffes aus bedrucktem Altpapier ist zwar bereits bekannt, jedoch nicht in Verbindung mit Kaustizierschlamm bzw. Magnesiumhydroxyd, so daß auch die gemäß der Erfindung erzielten besonders vorteilhaften Wirkungen nach den bekannten Verfahren nicht erreicht werden.The fact that in caustic sludge, especially in that in straw pulp plants resulting, suspensions of such salts are mixed, as well as the fact that the through Treatment of carnallite waste liquor with caustic sludge. Magnesium hydroxide formed Contains suspensions of such salts, make these solvents as such so suitable. • It has now been found that both the effect of causticizing sludge and the Effect of magnesium hydroxide can be increased significantly when using these treatment agents nor suspensions of calcium or magnesium silicate, barium sulfate, barium carbonate, simple or basic magnesium carbonate individually or as a mixture with one another be admitted. The use of alkaline earth silicates, sulfates or carbonates the production of pure paper stock from printed waste paper is already known, but not in connection with causticizing sludge or magnesium hydroxide, so that too the particularly advantageous effects achieved according to the invention according to the known Procedure cannot be achieved.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW0084219 | 1929-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE593427C true DE593427C (en) | 1934-02-26 |
Family
ID=7611892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930593427D Expired DE593427C (en) | 1929-11-18 | 1930-04-06 | Process for the production of pure paper stock from printed waste paper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1919140A (en) |
| BE (1) | BE374896A (en) |
| DE (1) | DE593427C (en) |
| FR (1) | FR705385A (en) |
| GB (1) | GB364756A (en) |
| NL (1) | NL33081C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE747716C (en) * | 1937-01-27 | 1944-10-11 | Hans Fehn | Process for regenerating printing paper |
| ES2070317T3 (en) * | 1989-03-15 | 1995-06-01 | Woodfree Ltd | METHOD FOR DEINTINATING WASTE PAPER MATERIALS. |
| US5882476A (en) * | 1995-05-05 | 1999-03-16 | Solvay Minerals, Inc. | Deinking printed wastepaper using alkaline solution containing sodium sulfite and sodium carbonate |
-
0
- BE BE374896D patent/BE374896A/xx unknown
- NL NL33081D patent/NL33081C/xx active
-
1930
- 1930-04-06 DE DE1930593427D patent/DE593427C/en not_active Expired
- 1930-11-12 FR FR705385D patent/FR705385A/en not_active Expired
- 1930-11-13 US US49551830 patent/US1919140A/en not_active Expired - Lifetime
- 1930-11-17 GB GB3455730A patent/GB364756A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB364756A (en) | 1932-01-14 |
| BE374896A (en) | 1900-01-01 |
| US1919140A (en) | 1933-07-18 |
| FR705385A (en) | 1931-06-05 |
| NL33081C (en) | 1900-01-01 |
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