CN104032329A

CN104032329A - Cathode-inserted magnesium electrolysis bath

Info

Publication number: CN104032329A
Application number: CN201410270102.5A
Authority: CN
Inventors: 刘程琳; 孙泽; 路贵民; 于建国
Original assignee: East China University of Science and Technology
Current assignee: East China University of Science and Technology
Priority date: 2014-06-17
Filing date: 2014-06-17
Publication date: 2014-09-10
Anticipated expiration: 2034-06-17
Also published as: CN104032329B

Abstract

The invention relates to a cathode-inserted magnesium electrolysis bath which comprises a cathode, an anode, an electrolysis chamber and a magnesium collection chamber, wherein the cathode is inserted into the electrolysis chamber of the magnesium electrolysis bath from the top of the electrolysis tank; the cathode and anode are parallel; and the magnesium collection chamber is positioned on one side of the cathode and anode. The electrolysis bath changes the structure of the traditional magnesium electrolysis bath, adopts the cathode-inserted method, optimizes the flow conditions of the current and electrolyte in the magnesium electrolysis bath, fully utilizes the current direction in the electrodes and the flow behaviors of the electrolyte, and enhances the separation efficiency of the magnesium metal. Compared with the original bath, the cathode-inserted magnesium electrolysis bath has the advantages of higher magnesium metal separation rate, more regular structure and distribution of the cathode and anode, and smaller occupied space.

Description

The upper cathode type closing down magnesium electrolysis bath of inserting

[technical field]

The present invention relates to cell technologies field, specifically, is a kind of slotting cathode type closing down magnesium electrolysis bath.

[background technology]

Magnesium is a kind of light non-ferrous metal, and because it can be good at and other metals form the alloy that intensity is high and density is little, its Application Areas is more and more wider.Magnesium not only enjoys expectation in fields such as consumer electronics, automobile, medical treatment as lightweight material, also as the electrode structure material of magnesium fuel cell, at battery industry, has important application.

China is MAGNESIUM METAL big producing country, and its production method mainly be take pyrolysis Pidgeon process as main.Domestic electrolyzer technique of producing for electrolytic process falls behind, output and production efficiency is low, energy consumption is high.And external closing down magnesium electrolysis bath strength of current is large, level of automation is high, and unit surface MAGNESIUM METAL output is high, and power consumption is low.China moves current efficiency without Separating Plate Magnesium Electrolysis Cells at present only in 76～78% left and right, and MAGNESIUM METAL separation rate is low, and whole magnesium eletrolysis industry is huge with external gap.

The present invention is by the advanced magnesium eletrolysis technique of research, and exploitation has the magnesium eletrolysis gordian technique of China's independent intellectual property right.Cell construction is transformed simultaneously, to improve the MAGNESIUM METAL separation rate of electrolyzer, reduced energy expenditure.

[summary of the invention]

The object of the invention is to overcome the deficiencies in the prior art, a kind of slotting cathode type closing down magnesium electrolysis bath is provided.

The object of the invention is to be achieved through the following technical solutions:

A upper slotting cathode type closing down magnesium electrolysis bath, it comprises negative electrode, anode, tank room and collection magnesium chamber, negative electrode is inserted into closing down magnesium electrolysis bath tank room from electrolyzer top, and negative electrode is parallel with anode; Collection magnesium chamber is positioned at a side of negative electrode and anode.

Described negative electrode and positive electrode is apart from tank room one side wall surface 0.01～0.2m.

The upper edge of described negative electrode and positive electrode maintains an equal level, and the bottom of negative electrode and the bottom of anode maintain an equal level or lower than anode 0.01～0.2m, cathode height is 2～3m.

Described cathode thickness is 0.05～0.20m.

Described negative electrode is than anode along the long 0.01～0.5m of collection magnesium chamber direction, and negative electrode width is 1～1.5m.

Compared with prior art, positively effect of the present invention is:

The present invention has changed the structure of traditional closing down magnesium electrolysis bath, inserts the method for negative electrode in employing, has optimized electric current and electrolytical mobility status in closing down magnesium electrolysis bath, takes full advantage of the sense of current and electrolytical flow characteristics in electrode, has improved the separation efficiency of MAGNESIUM METAL.Compare with former grooved, the MAGNESIUM METAL separation rate of upper slotting cathode type closing down magnesium electrolysis bath increases, simultaneously Structure of the cathode and the anode and arrange more regular, the electrolyzer reduction that takes up room.

[accompanying drawing explanation]

Fig. 1 is prototype magnesium electrolytic-bath structure schematic diagram;

Fig. 2 is upper slotting cathode type magnesium electrolytic-bath structure schematic diagram;

Fig. 3 is prototype closing down magnesium electrolysis bath internal structure cross sectional representation;

Fig. 4 is upper slotting cathode type closing down magnesium electrolysis bath internal structure cross sectional representation;

Label in accompanying drawing is respectively: 1, anode, 2, negative electrode, 3, tank room, 4, collection magnesium chamber

[embodiment]

The present invention is below provided a kind of embodiment of slotting cathode type closing down magnesium electrolysis bath.

Embodiment 1

Refer to accompanying drawing 3 and accompanying drawing 4, a kind of slotting cathode type magnesium electrolytic-bath structure basic element of character is anode 1, negative electrode 2, tank room 3 and collection magnesium chamber 4.Negative electrode and positive electrode is apart from tank room one side wall surface 0.02m, and the upper edge of negative electrode and positive electrode maintains an equal level, and the bottom of negative electrode and the bottom of anode maintain an equal level, cathode height is 2.2m, cathode thickness is 0.065m, and negative electrode is than anode along the long 0.02m of collection magnesium chamber direction, and negative electrode width is 1.02m.

By electric field, thermal field, magnetic field, flow field analysis, upper slotting cathode type closing down magnesium electrolysis bath thermal equilibrium is good, and it is in good condition that electrolyte temperature remains 700 ℃ of electrolyte flow, and MAGNESIUM METAL separation rate has obvious lifting.

Comparative example 1

Refer to accompanying drawing 1 and accompanying drawing 2, a kind of magnesium electrolytic-bath structure basic element of character is anode 1, negative electrode 2, tank room 3 and collection magnesium chamber 4.Negative electrode 2 inserts electrolyzer from closing down magnesium electrolysis bath near tank room 3 one sides.

Contrast former magnesium electrolytic-bath structure, the collection magnesium chamber that upper slotting cathode type closing down magnesium electrolysis bath MAGNESIUM METAL flows into along with ionogen, and finally collecting in the electrolyte levels of collection magnesium chamber, MAGNESIUM METAL flash liberation rate is promoted to 23% from 17%, and separation efficiency increases.The upper cathode type closing down magnesium electrolysis bath anode and cathode of inserting is arranged more regularly simultaneously, has saved and has produced required space.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.

Claims

1. the upper cathode type closing down magnesium electrolysis bath of inserting, is characterized in that, it comprises negative electrode, anode, and tank room and collection magnesium chamber, negative electrode is inserted into closing down magnesium electrolysis bath tank room from electrolyzer top, and negative electrode is parallel with anode; Collection magnesium chamber is positioned at a side of negative electrode and anode.

2. a kind of slotting cathode type closing down magnesium electrolysis bath as claimed in claim 1, is characterized in that, described negative electrode and positive electrode is apart from tank room one side wall surface 0.01～0.2m.

3. a kind of slotting cathode type closing down magnesium electrolysis bath as claimed in claim 1, is characterized in that, the upper edge of described negative electrode and positive electrode maintains an equal level, and the bottom of negative electrode and the bottom of anode maintain an equal level or lower than anode 0.01～0.2m, cathode height is 2～3m.

4. a kind of slotting cathode type closing down magnesium electrolysis bath as claimed in claim 1, is characterized in that, described cathode thickness is 0.05～0.20m.

5. a kind of slotting cathode type closing down magnesium electrolysis bath as claimed in claim 1, is characterized in that, described negative electrode is than anode along the long 0.01～0.5m of collection magnesium chamber direction, and negative electrode width is 1～1.5m.