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Preparation method for iron oxide red

A technology of iron oxide red and ferrous ions, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, etc., can solve environmental pollution and other problems, and achieve the effect of improving utilization rate

Inactive Publication Date: 2014-01-15
江苏江盛南节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the treatment of hydrochloric acid pickling waste liquid, many enterprises consider the cost and technical problems of waste liquid treatment, so they adopt direct discharge, which causes great pollution to the environment

Method used

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Embodiment Construction

[0007] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0008] A preparation method of iron oxide red, extracting ferrous ions in hydrochloric acid pickling waste liquid to prepare ferrous sulfate, then adding ammonia water to ferrous sulfate for oxidation and neutralization reaction to obtain iron oxide red precipitate, which is separated and dried That's it.

[0009] The molar ratio of ferrous ion and ammonia water reaction is 1:5.

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Abstract

The invention discloses a preparation method for iron oxide red. The preparation method comprises the following steps: extracting ferrous ions in waste hydrochloric acid pickling liquid to prepare ferrous sulfate; adding ammonia water into the ferrous sulfate for oxidation and neutralization reactions so as to obtain iron oxide red sediment; and carrying out separating and drying. The method has the following advantage: iron oxide red is prepared by using the waste hydrochloric acid pickling liquid, so the utilization rate of the waste hydrochloric acid pickling liquid is improved.

Description

technical field [0001] The invention relates to a preparation method of iron oxide red. Background technique [0002] For the treatment of hydrochloric acid pickling waste liquid, many enterprises consider the cost and technical problems of waste liquid treatment, so they adopt direct discharge, which causes great pollution to the environment. In fact, many components in the waste hydrochloric acid pickling solution can be reused. Contents of the invention [0003] Purpose of the invention: for the above problems, the purpose of this invention is to provide a kind of preparation method of iron oxide red, utilize hydrochloric acid pickling waste liquid as raw material, improve the utilization rate of hydrochloric acid pickling waste liquid. [0004] Technical solution: a preparation method of iron oxide red, extracting ferrous ions in hydrochloric acid pickling waste liquid to prepare ferrous sulfate, and then adding ammonia water to ferrous sulfate for oxidation and neutr...

Claims

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Application Information

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IPC IPC(8): C01G49/06
Inventor 付荣
Owner 江苏江盛南节能科技有限公司
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