Method for preparing transparent iron oxide pigment with microemulsion method

A technology of transparent iron oxide and transparent iron oxide yellow, which is applied in the fields of iron oxide, chemical instruments and methods, iron oxide/iron hydroxide, etc., can solve problems such as precedents and literature reports that have not yet been found, and achieve significant technological advancement , Based on science, highly operable effect

Active Publication Date: 2008-12-10
王建民
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Problems solved by technology

However, the formula of this kind of microemulsion dispersant and the subsequent particle refinement process of iron oxide...

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  • Method for preparing transparent iron oxide pigment with microemulsion method

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and typical embodiments.

[0043] In the accompanying drawings, the key technology involved in the method for producing transparent iron oxide pigments using the microemulsion method of the present invention is to prepare ferrous sulfate solution, ferric sulfate solution, and ferric hydroxide crystals on the basis of preparing the microemulsion dispersant Subsequent particle refinement treatment of nuclear and iron oxide yellow wet slurry, the process flow is as follows:

[0044] 1. Prepare ferrous sulfate with sulfuric acid and iron sheets as raw materials, and the reaction is as follows:

[0045] Fe+H 2 SO 4 →FeSO 4 +H 2 ↑

[0046] The reaction is carried out in an acid-resistant open reaction tank made of ceramic tiles, the reaction temperature is 40-60 DEG C, and the sulfuric acid concentration is 10-20% (wt).

[0047] 2. Add concentrated sulfuric acid and sodiu...

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Abstract

The invention relates to a method for making a transparent ironoxide pigment through adopting a micro emulsion method. The method relates to two key technologies including the preparation and the application of a micro-emulsification dispersing agent as well as the preparation and the subsequent thinning treatment of ferric oxide yellow. The micro-emulsification dispersing agent comprises a hydrophilic micro emulsion I consisting of water, a hydrophilic surface active agent and a coemulsifier and an oleophilic micro emulsion II consisting of oil, an oleophilic surface active agent and a coemulsifier, wherein both micro emulsions are coated layer by layer in turn on demand according to the surface water-soluble or oil-soluble characteristic of a refined particulate material; ferric oxide yellow particle undergoes dispersion and refining treatment so as to reach nanometer scale and make transparent ferric oxide yellow; and the transparent ferric oxide yellow undergoes high-temperature baking so as to generate transparent ferric oxide red. The method has scientific basis, reliable method, simple and feasible process and strong operability.

Description

technical field [0001] The invention relates to the technical field of manufacturing inorganic chemical pigments, in particular to a method for producing transparent iron oxide pigments by using a microemulsion method. Background technique [0002] Iron oxide pigment is a very important inorganic pigment. It is second only to titanium dioxide among various synthetic inorganic pigments, and ranks second in the largest quantity and widest range of color pigments. Iron oxide pigments, including iron red, iron yellow, iron black, iron orange, and iron brown, have the outstanding advantages of multiple colors, wide color spectrum, non-toxicity, and low price, and have been widely used in paints, coatings, building materials, rubber and plastics , electromechanical, tobacco, abrasive and pharmaceutical industries. [0003] Among the iron-based pigments, the largest primary product is iron oxide yellow (referred to as plain yellow), that is, iron oxyhydroxide FeOOH, which turns in...

Claims

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Application Information

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IPC IPC(8): C09C1/24C09C3/00C01G49/06
Inventor 王尚弟王建民
Owner 王建民
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