DE658843C - Manufacture of red iron oxide pigments - Google Patents
Manufacture of red iron oxide pigmentsInfo
- Publication number
- DE658843C DE658843C DEK133269D DEK0133269D DE658843C DE 658843 C DE658843 C DE 658843C DE K133269 D DEK133269 D DE K133269D DE K0133269 D DEK0133269 D DE K0133269D DE 658843 C DE658843 C DE 658843C
- Authority
- DE
- Germany
- Prior art keywords
- iron oxide
- manufacture
- red iron
- oxide pigments
- iron
- 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
- 239000001034 iron oxide pigment Substances 0.000 title claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 235000014413 iron hydroxide Nutrition 0.000 claims description 7
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000725 suspension Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Description
In dem Patent 658 020 ist ein Verfahren zur Herstellung von roten Eisenoxydpigmenten beschrieben, das darin besteht, daß man Eisenhydroxyd in Gegenwart von fertigem Eisenoxyd unter 'Druck auf Temperaturen von über ioo° erhitzt.In the patent 658 020 is a process for the production of red iron oxide pigments described, which consists in the fact that one iron hydroxide in the presence of finished Iron oxide heated under pressure to temperatures of over 100 °.
Es wurde nun die überraschende Feststellung gemacht, daß man die Umwandlung des Eisenhydroxyds in Eisenoxyd auch durch Koeben ohne Anwendung von Druck bewirken kann.The surprising finding has now been made that the conversion of the Iron hydroxide can also be converted into iron oxide by boiling without applying pressure can.
Gegenüber dem Verfahren des Hauptpatents bietet dieses Verfahren den Vorteil, daß man infolge des Verzichts auf die An-Wendung von Druck in einfachen Apparaturen, die nicht druckfest zu sein brauchen, arbeiten kann.Compared to the process of the main patent, this process has the advantage that by renouncing the use of pressure in simple apparatus, which do not need to be pressure-resistant can work.
Ausführungsbeispiele
20 Embodiments
20th
i. In einem oben offenen t Rührwerk wurden 801 einer Eisenhydroxydsuspension, die nach bekannten Verfahren durch Fällen einer Eisenchlorürlösung mit Ätzkalk und Oxydation mit Luft hergestellt war und 141 g Fe(OH)3 im Liter enthielt, mit 20 1 einer Eisenoxydsuspension, die 85g Fe2O3 im Liter enthielt, versetzt. Alsdann wurde durch Einleiten von Dampf ungefähr 1 Stunde lang gekocht. Nach dieser Zeit war das Eisenhydroxyd in Eisenoxyd übergegangen. Eine Probe des von der Flüssigkeit getrennten, ausgewaschenen und getrockneten Eisenoxyds hatte einen Gehalt an Fe2O3 von 960/0.i. In an open-topped t agitator 801 a Eisenhydroxydsuspension, which was prepared by known methods by precipitation of a ferrous chloride solution with lime and oxidation with air, and 141 g Fe (OH) 3 contained per liter with 20 1 of a Eisenoxydsuspension that 85g Fe 2 O were 3 contained in the liter, added. Then the mixture was cooked for about 1 hour by introducing steam. After this time the iron hydroxide had changed into iron oxide. A sample of the iron oxide separated from the liquid, washed out and dried had an Fe 2 O 3 content of 960/0.
2. 201 der nach Beispiel 1 erhaltenen Eisenoxydsuspension wurden wie bei Beispiel 1 mit 801 Eisenliydroxydsuspension versetzt und in einem offenen Rührwerk gekocht. Nach 30 Minuten enthielt eine Probe des abfiltrierten, ausgewaschenen und getrockneten Oxyds 90,20/0 Fe2O3, nach weiteren 10 Minuten 93,6% und nach weiteren 30 Minuten 94,60/0 Fe2O3.2. 201 of the iron oxide suspension obtained according to Example 1 were mixed with 80 liters of iron oxide suspension as in Example 1 and boiled in an open stirrer. After 30 minutes a sample of the filtered, washed out and dried oxide contained 90.20 / 0 Fe 2 O 3 , after a further 10 minutes 93.6% and after a further 30 minutes 94.60 / 0 Fe 2 O 3 .
3. 40 1 einer EisenhydiOxydsuspension mit 146 g Fe(OH)3 im Liter wurden mit 100 1 Wasser und 5 kg eines Eisen oxy drots des Handels versetzt. Die Suspension wurde in einem offenen Rührwerk I/2 Stunde lang gekocht. Nach dieser Zeit war die Umwandlung des Eisenhydroxyds in Eisenoxyd beendet. Das abfiltrierte, ausgewaschene und getrocknete Oxyd enthielt 96,50/0 Fe2O3.3. 40 1 of an iron hydroxide suspension with 146 g of Fe (OH) 3 per liter were mixed with 100 1 of water and 5 kg of a commercial iron oxide. The suspension was boiled in an open stirrer for 1/2 hour. After this time the conversion of the iron hydroxide into iron oxide was complete. The oxide filtered off, washed out and dried contained 96.50/0 Fe 2 O 3 .
*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:
Dr. Bruno Uebler in Berlin-] ohannisthal,Dr. Bruno Uebler in Berlin-] ohannisthal,
Die im Ausführungsbeispiel i verwendete Eisenhydroxydsuspension wurde ohne Zusatz von fertigem Eisenoxyd durch Einleiten von Dampf ι Stunde lang gekocht. Die hellgelbje Farbe des Ausgangsproduktes hatte sich ni^hverändert. ":· f<The iron hydroxide suspension used in exemplary embodiment i was boiled for ι hour by introducing steam without the addition of finished iron oxide. The light yellow color of the starting product had not changed. " : · F <
Im getrockneten Produkt wurden 980/c Fe(OH)3 gefunden.980 / c Fe (OH) 3 were found in the dried product.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK133269D DE658843C (en) | 1934-02-21 | 1934-02-21 | Manufacture of red iron oxide pigments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK133269D DE658843C (en) | 1934-02-21 | 1934-02-21 | Manufacture of red iron oxide pigments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE658843C true DE658843C (en) | 1938-04-19 |
Family
ID=7247839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK133269D Expired DE658843C (en) | 1934-02-21 | 1934-02-21 | Manufacture of red iron oxide pigments |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE658843C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1084405B (en) * | 1952-09-16 | 1960-06-30 | C K Williams & Co | Production of fallen, red iron (ó¾) oxide |
| DE1172001B (en) * | 1957-06-13 | 1964-06-11 | Columbian Carbon Company Gegru | Process for the production of red ª ‡ iron (ó¾) oxide |
-
1934
- 1934-02-21 DE DEK133269D patent/DE658843C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1084405B (en) * | 1952-09-16 | 1960-06-30 | C K Williams & Co | Production of fallen, red iron (ó¾) oxide |
| DE1172001B (en) * | 1957-06-13 | 1964-06-11 | Columbian Carbon Company Gegru | Process for the production of red ª ‡ iron (ó¾) oxide |
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