Comprehensive utilization method of serpentine and device used by method
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A technology of serpentine and mixture, which is applied in chemical instruments and methods, cobalt compounds, carboxylate preparation, etc., and can solve the problem of low comprehensive utilization value of serpentine
Active Publication Date: 2013-11-20
NANYANG ORIENTAL APPL CHEM RES INST +1
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[0006] The method provided by the above-mentioned patent can only separate and extract magnesium and silicon elements in serpentine, but does not separate metal elements such as iron, nickel, cobalt, and aluminum in serpentine. It can be seen that this method has no effect on the serpentine. Low comprehensive utilization value
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Embodiment 1
[0031] This embodiment provides a kind of comprehensive utilization method of serpentine, comprising:
[0032] Step A: pulverizing the serpentine, adding sulfuric acid to it and heating for acidolysis, and then filtering to obtain the first filtrate and acidolysis residue;
[0033] Step B: adding water and sodium hydroxide to the acidolysis residue, filtering after reaction to obtain water glass;
[0034] Step C: Add oxidant to the first filtrate to make the Fe therein 2+ Oxidation; then add a pH regulator to it, so that the pH end point of the reaction solution is 1.5-5.5, and a precipitation reaction occurs at the same time, and then filter to obtain the iron-aluminum mixture and the second filtrate; add water and sodium hydroxide to the iron-aluminum mixture , filter after reaction to obtain iron precipitate and sodium metaaluminate solution;
[0035] The oxidizing agent is one or more of the following: hydrogen peroxide, sodium hypochlorite, sodium chlorate, perchloric a...
Embodiment 2
[0140] The present invention also provides comprehensive utilization equipment for serpentine, which can be used in the method provided in Embodiment 1, including:
[0141] The first acidolysis tank, the first filter, the alkali hydrolysis reactor, the second filter, the iron-aluminum precipitation reactor, the third filter, the nickel-cobalt precipitation reactor, the fourth filter, the alkali washing reactor and the fifth filter;
[0142] The first acidolysis tank is used for acidolysis in step A;
[0143] The first filter is used for filtering in step A;
[0144] The alkaline hydrolysis reactor is used for: the reaction of step B;
[0145] The second filter is used for: filtering in step B;
[0146] The iron-aluminum precipitation reactor is used for: the reaction of obtaining the iron-aluminum mixture in step C;
[0147] The third filter is used for: filtering in step C, to obtain the iron-aluminum mixture;
[0148] The nickel-cobalt precipitation reactor is used for:...
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Abstract
The invention discloses a comprehensive utilization method of serpentine and a device used by the method. The comprehensive utilization method comprises the following steps of: adding sulfuric acid into the serpentine and heating up, filtering to obtain first filtrate and acidolysis residues; adding water and sodium hydroxide into the acidolysis residues, and filtering to obtain sodium silicate; adding oxidant into the first filtrate; adding a pH value regulator to carry out precipitation reaction, and filtering to obtain an iron-aluminum mixture and second filtrate; adding water and sodium hydroxide into the iron-aluminum mixture, and filtering to obtain iron precipitates and a sodium metaaluminate solution; adding sulfide into the second filtrate for reacting, and filtering to obtain a nickel-cobalt mixture and third filtrate; adding oxidant into the third filtrate for reacting; and adding alkali adsorbent and filtering to obtain a magnesium sulfate solution. The device comprises a first acidolysis slot, a first filter, an alkaline hydrolysis reactor, an iron-aluminum precipitation reactor, an alkaline washing reactor, a nickel-cobalt precipitation reactor, a second filter, a third filter, a fourth filter and a fifth filter. According to the comprehensive utilization method of the serpentine and the device used by the method disclosed by the invention, six elements in the serpentine can be extracted, so that the values of the elements are sufficiently utilized.
Description
technical field [0001] The invention relates to the field of hydrometallurgical technology, in particular to a method for comprehensive utilization of serpentine and equipment used therein. Background technique [0002] Serpentine is a hydrous magnesium-rich silicate mineral, the composition of which is mainly silicon and magnesium, and also contains valuable elements such as iron, nickel, cobalt, and aluminum. [0003] For many years, serpentine has been used to prepare calcium magnesium phosphate fertilizer, refractory materials, filter aids and auxiliary raw materials for the production of cast stone and rock wool. [0004] With the development of social economy, the demand for various resources in national economic construction is increasing day by day. Therefore, serpentine, as a mineral resource containing a variety of valuable elements, has gradually attracted attention from all walks of life in recent years. Relevant colleges, scientific research institutes and prod...
Claims
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