Comprehensive utilization method of serpentine and device used by method
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
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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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