A new production process of electrolytic manganese with energy saving and consumption reduction

Abstract

The invention discloses a new energy-saving and consumption-reducing electrolytic manganese production process, in which the catholyte is made into a small circulation outside the electrolytic cell, as an aid to the circulation of the original electrolyte, and the low-manganese-containing catholyte is used to replace the high-manganese-containing manganese slag Qualified liquid, used to replenish the amount of manganese metal in the tank; use the heat pump principle to convert the heat accumulated in the catholyte into hot air and hot water, which is used to dry manganese sheets, heat the anolyte, and the cooled catholyte to regulate the electrolytic cell temperature. The invention has small investment, can utilize the existing system to realize high-efficiency energy saving and emission reduction, and has obvious industrial application prospect.

Description

technical field

[0001] The invention relates to the hydrometallurgical electrolytic metal production technology, in particular to the electrolytic metal manganese production technology. Background technique

[0002] Traditional electrolytic manganese metal production process: the electrolyte flows from the cathode chamber through the diaphragm bag into the anode chamber, the anolyte generated in the anode chamber flows into the false bottom of the anode, and then flows out from the upper edge of the electrolytic cell through an isolation channel, and the anolyte enters the leaching barrel , adding sulfuric acid to leach manganese ore powder, and the leachate is purified and filtered before returning to electrolysis. Mn during electrolysis 2+ Metal manganese is precipitated on the cathode plate in the cathode chamber, and the electrothermal effect is generated to release Joule heat. In addition to the anolyte being taken away, the tank surface evaporating, and the tank body ...

Examples

Embodiment 1

[0024] Such as figure 1 , figure 2 As shown, a new electrolytic manganese production process for energy saving and consumption reduction specifically includes the following steps:

[0025] ① Liquid preparation, preparation of main circulation liquid (qualified liquid), containing Mn 2+ 32.5 g / L, one-time small circulation liquid, the same concentration as catholyte (containing Mn 2+ 14 g / L), mix 50m³ qualified liquid and 12m³ concentrated catholyte into the electrolytic cell, the flow rate into the cell is based on the amount of 1.02 tons of manganese metal deposited in the electrolytic cathode, and add 1.02 tons of manganese metal evenly.

[0026] ②Electrolysis and liquid separation cycle. Under the existing electrolysis conditions, the original water cooling system is removed, and the catholyte inlet and outlet are added to the electrolyzer to maintain the balance of the liquid in and out. After electrolysis, the liquid flowing out of the electrolyzer is divided into two ...

Embodiment 2

[0031] Such asfigure 1 , image 3 As shown, a new electrolytic manganese production process for energy saving and consumption reduction specifically includes the following steps:

[0032] ① Liquid preparation, preparation of main circulation liquid (qualified liquid), containing Mn 2+ 35 g / L, one-time small circulation liquid, the concentration is the same as the catholyte (containing Mn 2+ 14g / L), mix 45m³ qualified liquid and 12m³ concentrated catholyte, and then enter the electrolytic cell.

[0033] ②Electrolysis and liquid separation cycle. Under the existing electrolysis conditions, the original water cooling system is removed, and the catholyte inlet and outlet are added to the electrolyzer to maintain the balance of the liquid in and out. After electrolysis, the liquid flowing out of the electrolyzer is divided into two types: (1) anode Liquid, Mn 2+ 13g / L, the flow rate is based on the production of 1 ton of manganese to produce 45m³ anolyte; (2) catholyte, containi...

technical field

[0001] The invention relates to the hydrometallurgical electrolytic metal production technology, in particular to the electrolytic metal manganese production technology. Background technique

[0002] Traditional electrolytic manganese metal production process: the electrolyte flows from the cathode chamber through the diaphragm bag into the anode chamber, the anolyte generated in the anode chamber flows into the false bottom of the anode, and then flows out from the upper edge of the electrolytic cell through an isolation channel, and the anolyte enters the leaching barrel , adding sulfuric acid to leach manganese ore powder, and the leachate is purified and filtered before returning to electrolysis. Mn during electrolysis 2+ Metal manganese is precipitated on the cathode plate in the cathode chamber, and the electrothermal effect is generated to release Joule heat. In addition to the anolyte being taken away, the tank surface evaporating, and the tank body ...

Examples

Embodiment 1

[0024] Such as figure 1 , figure 2 As shown, a new electrolytic manganese production process for energy saving and consumption reduction specifically includes the following steps:

[0025] ① Liquid preparation, preparation of main circulation liquid (qualified liquid), containing Mn 2+ 32.5 g / L, one-time small circulation liquid, the same concentration as catholyte (containing Mn 2+ 14 g / L), mix 50m³ qualified liquid and 12m³ concentrated catholyte into the electrolytic cell, the flow rate into the cell is based on the amount of 1.02 tons of manganese metal deposited in the electrolytic cathode, and add 1.02 tons of manganese metal evenly.

[0026] ②Electrolysis and liquid separation cycle. Under the existing electrolysis conditions, the original water cooling system is removed, and the catholyte inlet and outlet are added to the electrolyzer to maintain the balance of the liquid in and out. After electrolysis, the liquid flowing out of the electrolyzer is divided into two ...

Embodiment 2

[0031] Such asfigure 1 , image 3 As shown, a new electrolytic manganese production process for energy saving and consumption reduction specifically includes the following steps:

[0032] ① Liquid preparation, preparation of main circulation liquid (qualified liquid), containing Mn 2+ 35 g / L, one-time small circulation liquid, the concentration is the same as the catholyte (containing Mn 2+ 14g / L), mix 45m³ qualified liquid and 12m³ concentrated catholyte, and then enter the electrolytic cell.

[0033] ②Electrolysis and liquid separation cycle. Under the existing electrolysis conditions, the original water cooling system is removed, and the catholyte inlet and outlet are added to the electrolyzer to maintain the balance of the liquid in and out. After electrolysis, the liquid flowing out of the electrolyzer is divided into two types: (1) anode Liquid, Mn 2+ 13g / L, the flow rate is based on the production of 1 ton of manganese to produce 45m³ anolyte; (2) catholyte, containi...

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