Iron oxide red production process Iron Oxide Pigments

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US6179908B1 - Iron oxide red pigments, process for the ...

The present invention relates to iron oxide red pigments, a process for the production of iron oxide red pigments by calcining iron oxide yellow pigments or iron oxide black pigments

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China Iron oxide red production process manufacturers and ...

May 21, 2008  Iron oxide red production process Iron oxide red has strong tinting power and is commonly used for dyeing, painting walls, and pavement color pigments. Everyone must be very curious about his production process! Huamei Chengde Iron Oxide Red

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Iron oxide red pigments, process for the production of ...

The invention also provides a process for the production of iron oxide red pigments by calcining iron oxide yellow pigments at temperatures of 350 to 1000° C., preferably of 600 to 900° C., in the presence of an oxygen-containing gas and optionally by subsequent grinding, characterised in that the iron oxide yellow pigment was produced as ...

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Manufacture of Iron Oxide Pigments - Chempedia - LookChem

Manufacture of Iron Oxide Pigments; Thermal Decomposition of Compounds . Red iron oxide pigments are mainly obtained by roasting and calcining processes. α-Fe 2 O 3 is obtained by oxidative calcination of all decomposable iron compounds. Decomposition of iron sulfate and α-FeOOH and the oxidation of Fe 3 O 4 are industrially important.. After prior dehydration to the monohydrate, ferrous ...

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Process for the preparation of bright, color-pure iron ...

A bright, color-pure iron oxide red pigment is produced by an improved process by precipitation of iron(II) salts in aqueous solution with an alkaline precipitating agent, oxidation at temperatures of from 20° C. to 100° C. and annealing of the resulting precipitation products under air to form iron oxide red pigments, wherein the improvement comprises before adding the alkaline ...

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Introduction of Iron Oxide Red Production Process - Chemate

The yellow iron oxide prepared by the wet method is washed with water to remove the water-soluble salt, filtered and dried, then put into the calciner. Calcined into iron red at 600℃-1000℃, then crushed and packaged to obtain finished products. The calcination of iron yellow into iron red is the process of removing the crystal water from the iron

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Iron oxide red pigments, process for the production of ...

The invention also provides a process for the production of iron oxide red pigments by calcining iron oxide yellow pigments at temperatures of 350 to 1000° C., preferably of 600 to 900° C., in the presence of an oxygen-containing gas and optionally by subsequent grinding, characterised in that the iron oxide yellow pigment was produced as ...

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US5421878A - Pure-colored iron oxide direct red pigments ...

This invention relates to new pure-colored iron oxide direct red pigments, to a process for their production and to their use for pigmenting lacquers, plastics, building materials and ceramics.

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Manufacture of Iron Oxide Pigments - Chempedia - LookChem

Manufacture of Iron Oxide Pigments; Thermal Decomposition of Compounds . Red iron oxide pigments are mainly obtained by roasting and calcining processes. α-Fe 2 O 3 is obtained by oxidative calcination of all decomposable iron compounds. Decomposition of iron sulfate and α-FeOOH and the oxidation of Fe 3 O 4 are industrially important.. After prior dehydration to the monohydrate, ferrous ...

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Process for producing iron oxide pigments - Bayer ...

A process for preparing iron oxide red pigments which comprises forming a suspension of haematite nuclei by reaction between dilute nitric acid and elemental iron at above 90° C., converting the suspension of haematite nuclei to a suspension of haematite pigment and optionally recovering the pigment as a solid.

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A New Development in Penniman Red Production 2015-01-06 ...

Feb 06, 2015  Iron oxide red, also known as hematite, forms the most important subgroup. Applications for iron oxide red pigments include the coloring of building materials, plastics, and coatings. Four processes in particular are used worldwide for the industrial production of iron oxide red pigments. The Laux process oxidizes iron with nitrobenzene.

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Iron Oxide Pigments - 911 Metallurgist

Jan 04, 2021  The sulfate-process portion of the titanium pigment industry is a key source of copperas, FeSO47H2O, which can either be calcined directly to iron oxide or used in solution methods for production of precipitated forms of iron oxide.

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US Patent for Iron oxide pigments Patent (Patent ...

Mar 04, 2004  According to the Penniman-Zoph process, iron oxide red pigments are prepared by dissolving iron metal with addition of an iron oxide red nucleus and oxidizing it. Here, as a rule nitric acid is used for producing the nucleus, so that nitrate or ammonia is present in the wastewater and has to be removed by means of complicated process engineering.

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Synthetic Red Iron Oxide Manufacturing Business ...

and have excellent tinting strength as compared with synthetic pigments. Red color iron oxide pigments are consumed in majority followed by yellow and black pigments. These are the basic color pigments and are used in combinations to produce other colors. The most commonly used methods of manufacturing iron oxide pigments includes the Laux process.

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US4256723A - Process for preparing precipitated red iron ...

A precipitated red iron oxide, having high crystallinity, low acicularity, unifrom particle size, and purity of color, is produced by aerating an alkaline mixture of copperas and soda ash to form seed crystals, increasing the temperature, adding additional copperas, and aerating the mixture to form red oxide crystals of the desired color.

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Pure-colored iron oxide direct red pigments, a process for ...

A process for the production of the pure-colored iron oxide red pigments claimed in claim 1, comprising addition of iron (II) salt solution and metallic iron or iron(II) salt solution and an alkali solution to a seed suspension and oxidation with oxygen-containing gases until the required color tone is obtained, wherein a yellow goethite seed ...

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Iron oxide pigment, Iron oxide red (yellow,black,orange ...

Toda United Industrial (Zhejiang) Co., Ltd. is a leading iron oxide pigment manufacturer in China,Our iron oxide pigments range:Iron oxide red ,Iron oxide yellow,Iron Oxide black,Iron oxide orange,Iron oxide brown,Compound ferric green etc.

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Iron Oxides - Golchha Pigments

In the Laux Process Iron Oxides are obtained as a by-product of the aniline process. The main pigment obtained is Black Iron Oxide, partially also Yellow Iron Oxide. These pigments are sold directly or used for preparation of Red Iron Oxide in the Calcination Process.

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Iron oxide – Venator - venatorcorp

Colored pigments for a variety of uses. Our range of iron oxide-based pigments is designed for use in construction, coatings, inks and plastics, cosmetics and pharmaceutical applications. Available in powder, granule and liquid form, our portfolio of iron oxide pigments includes products from our long-established FERROXIDE ® range.

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Process For Producing Iron Oxide Pigments - Coatings World

Patent No. U.S. 6,503,315 Bayer Aktiengesellschaft has obtained a patent for a process for preparing iron oxide red pigments. The process comprises forming a suspension of haematite nuclei through a reaction between dilute nitric acid and elemental iron at above 90˚C, converting the suspension of haematite nuclei to a suspension of haematite pigment and optionally recovering the pigment as a ...

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Process for producing iron oxide pigments - Bayer ...

A process for preparing iron oxide red pigments which comprises forming a suspension of haematite nuclei by reaction between dilute nitric acid and elemental iron at above 90° C., converting the suspension of haematite nuclei to a suspension of haematite pigment and optionally recovering the pigment as a solid.

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Pure-colored iron oxide direct red pigments, a process for ...

There are four known processes for the production of red iron oxide pigments (T. C. Patton, Pigment Handbook, Vol. 1, New York 1988, page 288). One of these methods is the direct precipitation of red iron oxides which is described in U.S. Pat. No. 2,716,595.

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Pure-colored iron oxide direct red pigments, a process for ...

A process for the production of the pure-colored iron oxide red pigments claimed in claim 1, comprising addition of iron (II) salt solution and metallic iron or iron(II) salt solution and an alkali solution to a seed suspension and oxidation with oxygen-containing gases until the required color tone is obtained, wherein a yellow goethite seed ...

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Iron Oxide Rust as Raw Material for the Production of Red ...

In this study, the potential of rust as a pigment in paint technology via sintering process was investigated. Iron (III) nitrate was the raw material used to make rust or iron oxide. The characteristics of iron oxide were analyzed. Moreover, iron oxide was mixed with other chemical components to make paint. The properties of paint in both liquid state and solid state were determined by ...

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LANXESS Inorganic Pigments - Iron and chrome oxide pigments

The process is the most environmentally friendly way to produce red iron oxide pigments in all of Asia. In production, we have managed to minimize our ecological footprint. For example, 100 % waste gas treatment is guaranteed.

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Red Iron Oxide-Pigment Red 101 (PR101)-Ferro

Red Iron Oxide (PR101) Pigment Red 101 (C.I. 77491) is a red Iron Oxide with chemical formula Fe 2 O 3 and a hematite structure. Our PR101 red iron oxide (Red Iron Oxide) pigments offer a dull red shade that is opaque to visible light with moderate NIR reflectance. Ferro's PR101 pigments provide properties ideal for plastics, coatings, cement ...

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Synthetic Red Iron Oxide,Iron Oxide Pigment,Synthetic ...

SYNTHETIC RED IRON OXIDE. Shiba Agro – Synthetic Red Iron Oxide is a high tinting strength Pigment made by calcinations process. Synthetic Red Iron Oxide and Micronised for ease of dispersion. They are colour stable in processing up to a temperature of 400 C and heat stable up to 1000 C. The wide range of grades have individual colour shade ...

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Process for the production of black iron oxide pigments ...

A process for the production of a black iron oxide pigment from Fe 2 O 3 hematite iron oxide which may be an impure oxide produced by the "Ruthner" process or by other means, or which may be a mineral hematite. The process may be used to upgrade poor quality synthetic or natural hematite, or to improve their performance as red pigments, by conversion to black pigment with subsequent

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Iron Oxide RedIron Oxide Pigment Factory Manufactuer In ...

Iron Oxide RedIron Oxide Pigment Factory In China-The most cost -effective supplier of iron oxide pigment Factory Manufactuer in China; 100% GB standard. [email protected] used for painting, building material, colored asphalt, permeable ground, ceramics, rubber, plastic, paper-making and stainless steel polishing

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Iron oxide pigment, Iron oxide red (yellow,black,orange ...

Toda United Industrial (Zhejiang) Co., Ltd. is a leading iron oxide pigment manufacturer in China,Our iron oxide pigments range:Iron oxide red ,Iron oxide yellow,Iron Oxide black,Iron oxide orange,Iron oxide brown,Compound ferric green etc.

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Synthetic Red Iron Oxide Manufacturing Business

Red color iron oxide pigments are consumed in majority followed by yellow and black pigments. These are the basic color pigments and are used in combinations to produce other colors. The most commonly used methods of manufacturing iron oxide pigments includes the Laux process.

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The production process of wet production of iron oxide ...

Hengshui Audecai Building Materials Co.,Ltd. is aJoint Venure manufacturer of Chrome and Iron Oxide Pigments for construction.Meanwhile,the company also produces and provides a series of Iron Oxide Pigments as Iron Oxide Yellow,Iron Oxide Black and Oxide Red ets., and the annual production voume is more than 20000T.

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Iron(III) oxide - Wikipedia

Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe 2 O 3.It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide (Fe 3 O 4), which also occurs naturally as the mineral magnetite.As the mineral known as hematite, Fe 2 O 3 is the main source of iron for the steel industry.

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