Method for extracting gallium resin from Bayer mother solution
A resin and mother liquor technology, applied in water/sewage treatment, metallurgical wastewater treatment, chemical instruments and methods, etc., to achieve the effect of saving resin cost, shortening time, and improving electrolysis efficiency
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Embodiment 1
[0017] Get 100ml of saturated resin (referred to as A) after rinsing in production, take a sample and detect that the gallium content is 2259mg / L, and the vanadium content is 1246mg / L. Get 100ml of lean resin (referred to as B) after rinsing in production, and take a sample to detect that the gallium content is 732mg / L, and the vanadium content is 1124mg / L. Load Φ30mm×500mm jacketed glass resin column (the glass resin column is customized for the laboratory, the heat preservation water is produced by a constant temperature water bath, and the water circulation is driven by a peristaltic pump, the following method is the same), and the concentration is 2.5N sodium hydroxide solution Pass through the resin column at a flow rate of 1BV / h at 40°C, take samples at certain intervals, and use ICP to detect the contents of gallium and vanadium in the instantaneous effluent. Ordinate, obtain gallium, vanadium content-alkali treatment amount curve (see attached figure 1 And attached ...
Embodiment 2
[0019] Get two parts of saturated resin after rinsing in the production, each 100ml (recorded as A and B), and sampling detection wherein gallium content is 2307mg / L, and vanadium content is 1378mg / L.
[0020] A resin treatment steps are as follows: put saturated resin A into a Φ30mm×500mm jacketed glass resin column, and 5BV of sodium hydroxide with a concentration of 2.5N passes through the resin column at 30°C at a flow rate of 1BV / h. The gallium content of the resin is 2293mg / L, and the vanadium content is 832mg / L. At this time, the resin is recorded as C. Take resin B and resin C, each with 5BV eluent (prepared from 2.6N NaOH solution and 91.875g / L sodium sulfide solution) at a flow rate of 2BV / h at 20°C. Afterwards, the eluent was taken for electrolysis test to investigate the influence of the resin treated with alkali solution and the resin without alkali solution treatment on the electrolysis efficiency. Under the same electrolysis conditions (the concentration of the...
Embodiment 4-10
[0024] Get the saturated resin used in Example 1, and the test device is the same as Example 1.
[0025] Processing step is the same as embodiment 1, and concentration is respectively the mixed lye (sodium hydroxide: potassium hydroxide: ammoniacal liquor= 1:1:1, mixed according to the volume ratio) 5BV passed through the glass resin column at 25°C, the flow rate was 1BV / h, and the content of gallium and vanadium in the mixed sample of the 5BV effluent was detected by ICP, and the data are shown in the table below. The ratio of gallium to alum content indicates the loss of gallium while alum is being removed. As in Example 2, gallium:aluminum is 2.78, which means that 2.78mg of gallium is lost when 1mg of alum is removed. Generally speaking, under the same conditions, the smaller the proportion of gallium alum, the better the treatment effect.
[0026]
[0027] Embodiment 11-13 (different flow velocity is to saturated resin processing effect)
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