Method for extracting multiple metals from manganese nodule industrial residues

A technology of industrial waste slag and manganese nodules, applied in the direction of improving process efficiency, etc., can solve problems such as polluting the environment and losing rare metals

CN101525691AInactive Publication Date: 2009-09-09冯玉刚
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for extracting multiple metals from manganese nodule industrial residues, which adopts a series of chemical and physical methods to respectively extract manganese, nickel, cobalt and copper from the manganese nodule industrial residues and effectively recycles the four scarce metals of manganese, nickel, cobalt and copper. The invention not only solves the problems that the manganese, the nickel, the cobalt and the copper in the industrial residues pollutes the environment, destroys the ecology and endangers the health of the human body in an ion way and other problems, but also obtains the four scarce metals of manganese, nickel, cobalt and copper and preventing the loss of the four scarce metals.
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Description

Technical field

[0001] The invention relates to a method for processing industrial waste residues, in particular to a method for extracting various required metals from industrial waste residues of polymetallic manganese nodules. Background technique

[0002] Manganese nodules are also called manganese lumps. Its color ranges from dark to brown. The content of various metal components in manganese nodules is approximately: 27%-30% of manganese, 1.25%-1.5% of nickel, and 1% of copper. -1.4% and cobalt 0.2%-0.25%, other components include iron 6%, silicon 5%, aluminum 3%, and a small amount of calcium, sodium, magnesium, potassium, titanium and barium, with hydrogen and oxygen. However, in the manganese nodule industry, metal manganese and iron are mainly extracted, and the manganese nodules after extraction become manganese nodules industrial waste.

[0003] The manganese nodules industrial waste not only swallows good land, but also takes up a lot of land. What's more serious is ...

Examples

Embodiment 1

[0017] Example 1: A method for extracting various metals from manganese nodule industrial waste residues. One part of manganese nodule industrial waste residue from three regions was taken, and experiments were carried out according to this method.

[0018] Put the manganese nodule industrial waste into three acid-resistant reactors, and then add enough dilute nitric acid to fully react, let stand, precipitate, separate and filter to obtain solutions and waste residues containing manganese nitrate, nickel nitrate, cobalt nitrate and copper nitrate .

[0019] Heat the solution containing manganese nitrate, nickel nitrate, cobalt nitrate and copper nitrate to 70°C, add a sufficient amount of ammonium oxalate solution at 75°C to fully react, stand, precipitate, filter, and separate to obtain a precipitate and a red filtrate. The precipitate is detected to be nickel oxalate and copper oxalate, the precipitate containing nickel oxalate and copper oxalate is fully heated, and sufficient...

Embodiment 2

[0025] Example 2: The treatment method of this example is basically the same as that of example 1, except that the solution containing manganese ions is added to a sufficient amount of ammonium oxalate solution at 60°C-80°C to fully react, then stand, precipitate and filter , Obtain the precipitate, wash the precipitate with clean water, add a sufficient amount of ammonium oxalate solution to fully react, concentrate, crystallize, and dry to obtain permanganate. Although the original metal of manganese is not extracted, the manganese ion in the waste residue is reduced, and the obtained permanganate can be used as a reagent.

[0026] Similarly, 3 parts of waste manganese nodules in the above-mentioned Example 1 were taken, and the experiment was carried out according to this method. The experimental data is shown in Table 2.

[0027] Table II

[0028]

[0029]

[0030] To sum up, it can be seen from the treatment results before and after the experiment of the two examples that...