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Special iron oxide yellow pigment for tobacco and production method thereof

A technology of iron oxide yellow and its production method, which is applied in the fields of tobacco, tobacco treatment, application, etc., can solve the problems of unsatisfactory product performance, consumption of non-renewable resources of iron, and effective control of the content, and achieve good color covering power and saving The effect of iron resources and fine particle size

Active Publication Date: 2010-11-17
ZHEJIANG HUAYUAN PIGMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of iron oxide yellow pigments for tobacco is generally produced by the iron sheet method. In the whole production process, the iron sheet participates in the reaction, which not only consumes iron, a non-renewable resource, but also produces products that are superior in terms of fineness and product performance. Not ideal, such as the content of toxic heavy metals arsenic (As) and lead (Pb) cannot be effectively controlled
In addition, it is inevitable that there will be dirty, messy and poor phenomena in the production process.

Method used

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  • Special iron oxide yellow pigment for tobacco and production method thereof
  • Special iron oxide yellow pigment for tobacco and production method thereof
  • Special iron oxide yellow pigment for tobacco and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one, such as figure 1 As shown, the iron oxide yellow pigment in this example is formed by dissolving solid ferrous sulfate with a content of 80-88% in water, and reacting with a sodium hydroxide solution with a concentration of 32% after clarification.

[0019] The production method of the iron oxide yellow pigment comprises seed crystal preparation and two-step oxidation, and the process steps are as follows:

[0020] i) seed crystal preparation,

[0021] a) adding water to dissolve and clarify the solid ferrous sulfate with a content of 81.6%, and claiming that 1894kg of ferrous sulfate solution with a content of about 39.6% (100% equivalent content is 750kg) is dropped into the seed crystal reaction tank;

[0022] b) 210kg of sodium hydroxide solution with a concentration of 32% is added to the seed crystal reaction tank;

[0023] c) At normal temperature, make ferrous sulfate and sodium hydroxide carry out neutralization reaction, pass into air oxidati...

Embodiment 2

[0028] Embodiment two, such as figure 1 As shown, the iron oxide yellow pigment of this example is formed by reacting 88% solid ferrous sulfate with water and reacting with 32% sodium hydroxide solution after clarification.

[0029] The production method of the iron oxide yellow pigment comprises seed crystal preparation and two-step oxidation, and the process steps are as follows:

[0030] i) seed crystal preparation,

[0031] a) adding water to dissolve and clarify the solid ferrous sulfate with a content of 87.6%, and claiming that 2440kg of a ferrous sulfate solution with a content of about 41.0% (100kg for a content of 100%) is dropped into a seed crystal reaction tank;

[0032] b) 280 kg of sodium hydroxide solution with a concentration of 32% is added in the seed crystal reaction barrel;

[0033] c) At normal temperature, make ferrous sulfate and sodium hydroxide carry out neutralization reaction, pass into air oxidation, oxidation time is 16.5 hours, and finally ferr...

Embodiment 3

[0038] Embodiment three, such as figure 1 As shown, the iron oxide yellow pigment of this example is formed by reacting 86% solid ferrous sulfate with water, clarifying and reacting with 32% sodium hydroxide solution.

[0039] The production method of the iron oxide yellow pigment comprises seed crystal preparation and two-step oxidation, and the process steps are as follows:

[0040] i) seed crystal preparation,

[0041] a) adding water to dissolve and clarify the solid ferrous sulfate with a content of 86.3%, and claiming that 2200 kg of a ferrous sulfate solution with a content of about 38.6% (converted to a content of 100% is 850 kg) is dropped into a seed crystal reaction tank;

[0042]b) 240kg of sodium hydroxide solution with a concentration of 32% is dropped into the seed crystal reaction barrel;

[0043] c) at normal temperature, make ferrous sulfate and sodium hydroxide carry out neutralization reaction, pass into air oxidation, oxidation time is 14 hours, and fina...

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Abstract

The invention relates to an iron oxide yellow pigment for tobacco and the production method, which resolves the technical problem and aims at providing a new liquid-liquid reacting iron oxide yellow pigment and the production method for tobacco, thus can ensure that the granularity of the product is more refined, more symmetrical and brighter than that made by iron filing method. The iron oxide yellow pigment for tobacco also aims at controlling the content of arsenic and lead in product in order to reach the requirement of tobacco industry. The production method adopts the technical proposalthat the iron oxide yellow pigment is obtained by the reaction of 4500 to 5000 weight parts of solid green copperas with 80 to 88 percent content and 2500 to 300 weight parts of sodium hydroxide solution with 32 percent concentration. The production method comprises the inoculating seed preparation and the second oxidation. The an iron oxide yellow pigment can be widely used in tobacco industry, such as tipping paper makers and printing ink makers.

Description

technical field [0001] The invention relates to a production method of iron oxide yellow pigment specially used for tobacco. Can be widely used in the tobacco industry, such as tipping paper, printing ink and other manufacturers. Background technique [0002] Iron oxide yellow pigment for tobacco, its chemical name: ferric oxide or iron oxyhydroxide, chemical formula: Fe 2 o 3 ·H 2 O (or FeOOH) is an important raw material for the production of tipping paper and ink. At present, the production of iron oxide yellow pigments for tobacco is generally produced by the iron sheet method. In the whole production process, the iron sheet participates in the reaction, which not only consumes iron, a non-renewable resource, but also produces products that are superior in terms of fineness and product performance. Not ideal, such as the content of toxic heavy metals arsenic (As) and lead (Pb) cannot be effectively controlled. In addition, it is inevitable that there will be dirty, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/24A24B15/28
Inventor 竺增林王菊平叶学锋李金花潘建跃
Owner ZHEJIANG HUAYUAN PIGMENT CO LTD
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