Hydrolysis removing and recovery method of alkali metal in electrolyte

A recycling method and electrolyte technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Unavailability and other problems, to achieve the effect of less pollution, high recovery rate and less environmental pollution

Inactive Publication Date: 2014-01-29
TECH OF METALS SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of process is relatively common, but in this method, it is not allowed to inject water into the reaction tank when the liquid in the reaction tank is boiling, so that the hydrolysis process cannot be continued and deepened, so the degree of hydrolysis is poor, and the recovery rate of basic metals is low.
Moreover, this method requires higher temperature (about 200°C) and pressure (3 to 5 atmospheres), so the energy consumption is higher
At the same time, the waste liquid cannot be used and pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Weigh the electrolyte with a capacity of 400ml. The concentration of silver nitrate in the electrolyte is 400g / L, and the concentration of copper nitrate is 25g / L, which is put into a 500ml heating container.

[0025] 2), stirring and heating until the electrolyte boils, and condensing and recovering the steam to the recovery device at the same time.

[0026] 3), treat the electrolyte temperature in the container to 115 ℃, and the volume evaporation of the liquid in the container is 72ml, continue to add the pure water that the temperature is 18 ℃ in the container with the constant speed of 0.5ml / min, at this moment, The liquid in the container remains boiling.

[0027] 4), continuously measure the acid concentration of the liquid in the reclaimer, until the acid concentration is 0.5g / L, stop heating;

[0028] 5), continue to add pure water at a constant speed of 3ml / min in the container, until the liquid volume in the container rises to 400ml;

[0029] 6), contin...

Embodiment 2

[0035] 1) Weigh the electrolyte with a capacity of 400ml. The concentration of silver nitrate in the electrolyte is 400g / L, and the concentration of copper nitrate is 25g / L, which is put into a 500ml heating container.

[0036] 2), stirring and heating until the electrolyte boils, and condensing and recovering the steam to the recovery device at the same time.

[0037] 3), treat the electrolyte solution in the container to 120 ℃, and the volume of the liquid in the container is evaporated to 160ml, continue to add the pure water that the temperature is 80 ℃ in the container with the constant speed of 1.5ml / min, at this moment, the container The liquid is kept boiling.

[0038] 4), continuously measure the acid concentration of the liquid in the reclaimer, until the acid concentration is 5g / L, stop heating;

[0039] 5), continue to add pure water at a constant speed of 8ml / min in the container, until the liquid volume in the container rises to 400ml;

[0040] 6), continue to...

Embodiment 3

[0044] 1) Weigh the electrolyte with a capacity of 400ml. The concentration of silver nitrate in the electrolyte is 400g / L, and the concentration of copper nitrate is 25g / L, which is put into a 500ml heating container.

[0045] 2), stirring and heating until the electrolyte boils, and condensing and recovering the steam to the recovery device at the same time.

[0046] 3), treat the electrolytic solution in the container to 118 ℃, and the volume of the liquid in the container evaporates to 75ml, continue to add the pure water that the temperature is 20 ℃ in the container with the constant speed of 1ml / min, at this moment, in the container The liquid remains boiling.

[0047] 4), continuously measure the acid concentration of the liquid in the reclaimer, until the acid concentration is 3g / L, stop heating;

[0048] 5), continue to add pure water at a constant speed of 5ml / min in the container, until the liquid volume in the container rises to 400ml;

[0049] 6), continue to s...

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PUM

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Abstract

The invention discloses a hydrolysis removing and recovery method of alkali metal in electrolyte. The method sequentially comprises the steps that: electrolyte with a volume of a is weighed and is placed into a heatable container, wherein the container is connected to a recovering device through a condensation pipe; the electrolyte is stirred and heated until boiled; when a boiling point temperature of 115-120 DEG C of the electrolyte in the container is reached, and the volume of the electrolyte is 15%a-40%a, pure water is continuously added into the container, and the liquid in the container maintains boiling; acid concentration of the liquid in the recovering device is continuously measured, and heating is stopped when the acid concentration is 0.5-5g / L; pure water is continuously added into the container, until the liquid volume in the container is returned to a; liquid in the container is continuously stirred, until the liquid temperature is no higher than 50 DEG C; and solid in the container is obtained by filtering and is washed, and the obtained solid is an alkali metal product. With the structure, advantages such as good hydrolysis degree, high alkali metal recovery rate, low energy consumption, and low pollution are provided.

Description

technical field [0001] The invention relates to the technical field of metal recovery, in particular to a method for hydrolysis, removal and recovery of basic metals in an electrolyte. Background technique [0002] The recovery of valuable alkaline metals in electrolytes is extremely meaningful. The method currently used is the basic metal hydrolysis process. This process method is relatively common, but in this method, water is not allowed to be injected into the reaction tank when the liquid in the reaction tank is boiled, so that the hydrolysis process cannot be carried out continuously and deeply, so the degree of hydrolysis is poor, and the recovery rate of basic metals is low. Moreover, this method requires relatively high temperature (about 200° C.) and pressure (3 to 5 atmospheres), so the energy consumption is relatively high. At the same time, the waste liquid cannot be used and pollutes the environment. Therefore it is necessary to improve. SUMMARY OF THE INV...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/58
Inventor 刘飞江
Owner TECH OF METALS SUZHOU
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