EA200801257A1 - METHOD OF OBTAINING IRON OXIDE PIGMENTS - Google Patents
METHOD OF OBTAINING IRON OXIDE PIGMENTSInfo
- Publication number
- EA200801257A1 EA200801257A1 EA200801257A EA200801257A EA200801257A1 EA 200801257 A1 EA200801257 A1 EA 200801257A1 EA 200801257 A EA200801257 A EA 200801257A EA 200801257 A EA200801257 A EA 200801257A EA 200801257 A1 EA200801257 A1 EA 200801257A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- iron oxide
- iron
- salt
- solution
- alkaline agent
- Prior art date
Links
Landscapes
- Compounds Of Iron (AREA)
Abstract
Изобретение относится к производству неорганических пигментов и может быть использовано для получения желтых и красных железооксидных пигментов. Получение пигментов проводят путём получения суспензии зародышей введением при перемешивании в раствор соли железа (II) щелочного агента и продуванием воздуха через образующуюся смесь. Далее в суспензию зародышей вводят раствор соли железа (II). Полученную смесь нагревают до температуры 55-75°С, окисляют кислородом воздуха в течение 20-60 ч с непрерывным введением щелочного агента. Полученный желтый железооксидный пигмент фильтрованием отделяется от жидкой фазы, промывается, сушится, измельчается и прокаливается при 600-900°С для получения красного железооксидного пигмента. В качестве щелочного агента на стадии синтеза желтого железооксидного пигмента используется водная суспензия гидроксида железа (II) с рН 8,5-10, полученная путем его осаждения аммиаком при перемешивании из раствора соли железа (II) с концентрацией Fe (II) 5-140 г/л. Допускается использование жидкого, газообразного аммиака либо его раствора.The invention relates to the production of inorganic pigments and can be used to obtain yellow and red iron oxide pigments. The preparation of pigments is carried out by obtaining a suspension of embryos by introducing with stirring an alkaline agent into a solution of the iron (II) salt and blowing air through the resulting mixture. Next, a solution of iron (II) salt is introduced into the embryo suspension. The resulting mixture is heated to a temperature of 55-75 ° C, oxidized with atmospheric oxygen for 20-60 hours with the continuous introduction of an alkaline agent. The resulting yellow iron oxide pigment is separated by filtration from the liquid phase, washed, dried, crushed and calcined at 600-900 ° C to obtain a red iron oxide pigment. As an alkaline agent at the stage of synthesis of yellow iron oxide pigment, an aqueous suspension of iron (II) hydroxide with a pH of 8.5-10 is used, obtained by precipitating it with ammonia with stirring from an iron (II) salt solution with an Fe (II) salt of 5-140 g / l. The use of liquid, gaseous ammonia or its solution is allowed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA200801257A EA200801257A1 (en) | 2008-04-24 | 2008-04-24 | METHOD OF OBTAINING IRON OXIDE PIGMENTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA200801257A EA200801257A1 (en) | 2008-04-24 | 2008-04-24 | METHOD OF OBTAINING IRON OXIDE PIGMENTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA011176B1 EA011176B1 (en) | 2009-02-27 |
| EA200801257A1 true EA200801257A1 (en) | 2009-02-27 |
Family
ID=40849080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA200801257A EA200801257A1 (en) | 2008-04-24 | 2008-04-24 | METHOD OF OBTAINING IRON OXIDE PIGMENTS |
Country Status (1)
| Country | Link |
|---|---|
| EA (1) | EA200801257A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2451706C1 (en) * | 2010-10-21 | 2012-05-27 | Государственное образовательное учреждение высшего профессионального образования "Башкирский государственный университет" (ГОУ ВПО БашГУ) | Method of producing iron-calcium pigment |
| RU2640550C1 (en) * | 2016-10-28 | 2018-01-09 | Общество с ограниченной ответственностью "Тэрион" | Method of producing red iron oxide pigment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2656047C1 (en) * | 2017-05-23 | 2018-05-30 | Валерий Константинович Ларин | Method of obtaining iron oxide pigments |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2939767A (en) * | 1957-10-07 | 1960-06-07 | Columbian Carbon | Manufacture of iron oxides |
| US3395983A (en) * | 1965-09-17 | 1968-08-06 | Pfizer & Co C | Process for the preparation of iron oxide |
| CS213670B1 (en) * | 1980-10-17 | 1982-04-09 | Vlastimil Hejl | Method of preparation of the germ for crystallization of the direct coagulated ferrin red |
| JPS62223027A (en) * | 1986-03-20 | 1987-10-01 | Ngk Insulators Ltd | Production of iron oxide for ferrite |
| DE19746262A1 (en) * | 1997-10-20 | 1999-04-22 | Bayer Ag | Iron oxide red pigments, process for the production of iron oxide red pigments and their use |
-
2008
- 2008-04-24 EA EA200801257A patent/EA200801257A1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2451706C1 (en) * | 2010-10-21 | 2012-05-27 | Государственное образовательное учреждение высшего профессионального образования "Башкирский государственный университет" (ГОУ ВПО БашГУ) | Method of producing iron-calcium pigment |
| RU2640550C1 (en) * | 2016-10-28 | 2018-01-09 | Общество с ограниченной ответственностью "Тэрион" | Method of producing red iron oxide pigment |
Also Published As
| Publication number | Publication date |
|---|---|
| EA011176B1 (en) | 2009-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM MD TM |
|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AZ KZ KG TJ |
|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): BY RU |