Process for deeply removing copper, arsenic and lead in anolyte of nickel electrolysis mixed acid system
A technology of anolyte and nickel electrolysis, which is applied in the direction of photographic process, photographic auxiliary process, process efficiency improvement, etc., can solve problems such as low efficiency, rising pressure of sodium ions in the system, incomplete reaction, etc., to shorten the processing flow, Good application prospect and cost reduction effect
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Embodiment 1
[0022] like figure 1 As shown, a process for deep removal of copper, arsenic, and lead in an anolyte of a nickel electrolysis mixed acid system includes the following steps:
[0023] S1. Feed anolyte and hydrogen sulfide gas at the inlet of the reactor, the anolyte flow rate is 650mL / min, and the hydrogen sulfide gas flow rate is 214mL / min, wherein, the impurity components in the anolyte solution: Cu0.55g / L, Pb0.0048g / L, As0.034g / L;
[0024] S2, the anolyte and hydrogen sulfide gas in the step S1 are fully mixed and reacted in the reactor, at the same time, the hydrogen sulfide flow rate is adjusted according to the potential of the reactor outlet solution to control the impurity removal depth, the potential control range is -30mV, and the tail gas produced during the recovery is carried out processing to obtain the reacted solution;
[0025] S3, the solution after the reaction obtained in the step S2, enters the intermediate storage tank from the reactor outlet, and obtain...
Embodiment 2
[0034] like figure 1 As shown, a process for deep removal of copper, arsenic, and lead in an anolyte of a nickel electrolysis mixed acid system includes the following steps:
[0035] S1, feed anolyte and hydrogen sulfide gas at the inlet of the reactor, the anolyte flow rate is 650mL / min, and the hydrogen sulfide gas flow rate is 234mL / min, wherein, the impurity components in the anolyte solution: Cu0.7g / L, Pb0.0071g / L, As0.05g / L;
[0036] S2, the anolyte and hydrogen sulfide gas in step S1 are fully mixed and reacted in the reactor, at the same time, the hydrogen sulfide flow rate is adjusted according to the potential of the reactor outlet solution to control the impurity removal depth, the potential control range is 0mV, and the tail gas generated during the period is recovered and processed , to obtain the reacted solution;
[0037] S3, the solution after the reaction obtained in the step S2, enters the intermediate storage tank from the reactor outlet, and obtains the ...
Embodiment 3
[0046] like figure 1 As shown, a process for deep removal of copper, arsenic, and lead in an anolyte of a nickel electrolysis mixed acid system includes the following steps:
[0047] S1. Feed anolyte and hydrogen sulfide gas at the inlet of the reactor, the anolyte flow rate is 650mL / min, and the hydrogen sulfide gas flow rate is 196mL / min, wherein, the impurity components in the anolyte solution: Cu0.55g / L, Pb0. 0053g / L, As0.059g / L;
[0048] S2, the anolyte and the hydrogen sulfide gas in the step S1 are fully mixed and reacted in the reactor, at the same time, the hydrogen sulfide flow rate is adjusted according to the potential of the reactor outlet solution to control the impurity removal depth, the potential control range is -10mV, and the tail gas produced during the recovery is carried out processing to obtain the reacted solution;
[0049] S3, the solution after the reaction obtained in the step S2, enters the intermediate storage tank from the reactor outlet, and ob...
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