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Method for producing iron oxide red by using concussive sludge

A technology of iron oxide red and sludge, applied in the direction of iron oxide, chemical instruments and methods, iron oxide/iron hydroxide, etc., can solve environmental pollution and other problems, and achieve the effect of simple steps

Active Publication Date: 2013-12-18
郑培学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, a large amount of vibration waste will be generated, which will easily pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for producing iron oxide red using shaking sludge, comprising the following steps:

[0030] a. Heating the oscillating sludge to remove the moisture in the oscillating sludge; the heating temperature is 120 degrees, and the heating time is 2 hours;

[0031] b. Put the oscillating sludge treated in step a into a non-closed container for electric heating, the heating temperature is 150 degrees, and the heating time is 2 hours, and the oxalic acid and sodium oxalate in the oscillating sludge are removed;

[0032] c. Put the oscillating sludge treated in step b into a non-closed container for heating, the heating temperature is 600 degrees, the heating time is 2 hours, and then naturally cool to obtain the iron oxide red product.

[0033] Among them, the main components of the shaking sludge are: sodium oxalate, ferric hydroxide, oxalic acid.

[0034] Wherein, the shaking sludge is obtained through the following steps:

[0035] (1) Put the 200kg rough parts that ...

Embodiment 2

[0041] A method for producing iron oxide red using shaking sludge, comprising the following steps:

[0042] a. Heating the oscillating sludge to remove the moisture in the oscillating sludge; the heating temperature is 100 degrees, and the heating time is 2 hours;

[0043] b. Put the oscillating sludge treated in step a into a non-closed container for electric heating, the heating temperature is 160 degrees, and the heating time is 1.5 hours, and the oxalic acid and sodium oxalate in the oscillating sludge are removed;

[0044] c. Put the oscillating sludge treated in step b into a non-closed container for heating, the heating temperature is 800 degrees, the heating time is 2 hours, and then naturally cooled to obtain the iron oxide red product.

[0045] Among them, the main components of the shaking sludge are: sodium oxalate, ferric hydroxide, oxalic acid.

[0046] Wherein, the shaking sludge is obtained through the following steps:

[0047] (1) Put the 200kg rough parts t...

Embodiment 3

[0053] A method for producing iron oxide red using shaking sludge, comprising the following steps:

[0054] a. Heating the oscillating sludge to remove the moisture in the oscillating sludge; the heating temperature is 100 degrees, and the heating time is 2.5 hours;

[0055] b. Put the oscillating sludge treated in step a into a non-closed container for electric heating, the heating temperature is 200 degrees, the heating time is 2 hours, and the oxalic acid and sodium oxalate in the oscillating sludge are removed;

[0056] c. Put the oscillating sludge treated in step b into a non-closed container for heating, the heating temperature is 700 degrees, the heating time is 3 hours, and then naturally cooled to obtain the iron oxide red product.

[0057] Among them, the main components of the shaking sludge are: sodium oxalate, ferric hydroxide, oxalic acid.

[0058] Wherein, the shaking sludge is obtained through the following steps:

[0059] (1) Put the 200kg rough parts that ...

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Abstract

The invention discloses a method for producing iron oxide red by using concussive sludge. The method comprises the following steps of: preparing a blank piece into concussive sludge through a concussion process, heating the concussive sludge to remove moisture out of the concussive sludge; electrically heating the treated concussive sludge into an un-sealed container to remove organic substances out of the concussive sludge; and heating the treated concussive sludge in the un-sealed container, and then naturally cooling to obtain an iron oxide red product with purity of over 90%. Compared with many methods for producing the iron oxide red, having the problems of complicated operation and high raw material cost, the method provided by the invention has the beneficial effect that waste substances including raw edges, burrs and the like in blank piece processing are effectively utilized, the steps of the method are simple, and the iron oxide red can be obtained through effective treatment.

Description

[0001] technical field [0002] The invention relates to a method for producing iron oxide red, in particular to a method for producing iron oxide red by using shaking sludge. [0003] Background technique [0004] Iron oxide red, also known as iron oxide red, iron red, rust red, is an important chemical raw material, it is widely used in coatings, building materials, electronics, ceramics, textiles, papermaking, ink and other industries, and has a great demand . At present, there are two types of iron oxide red production methods: dry method and wet method, such as green vitriol calcination method, iron yellow, iron black calcination method, sulfate, nitrate wet method and mixed acid method are being used in production. The raw materials are iron phosphorus, steel rolling pickling waste, and ferrous sulfate formed from titanium dioxide production. This type of method requires a long process, high cost, and requires a large amount of acid or lye for dissolution, precipita...

Claims

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Application Information

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IPC IPC(8): C01G49/06C02F11/00
Inventor 郑培学
Owner 郑培学
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