CN104005042B - A kind of method of contact rod anti-oxidant treatment in lead electrolysis system - Google Patents
A kind of method of contact rod anti-oxidant treatment in lead electrolysis system Download PDFInfo
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- CN104005042B CN104005042B CN201410246779.5A CN201410246779A CN104005042B CN 104005042 B CN104005042 B CN 104005042B CN 201410246779 A CN201410246779 A CN 201410246779A CN 104005042 B CN104005042 B CN 104005042B
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- contact rod
- sulfuric acid
- electrolysis system
- dilute sulfuric
- oxidant treatment
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Abstract
The present invention relates to non-ferrous metal metallurgy technical field, be specifically related to contact rod anti-oxidant treatment in a kind of lead electrolysis system.It includes contact rod is put into optical wand machine bucket, add concentration be 10～25% dilute sulfuric acid and the thick shell of fresh Oryza glutinosa carry out pickling；After pickling terminates, sieve removes rice husk, then carries out white picking with dilute sulfuric acid, finally cleans up with water；When casting anode strip, by one layer of suitable antioxidant of its surface smear, surface is made to form uniform protecting film.The method anti oxidation time is lasting, with low cost, not affects electric conductivity；Overcome contact rod oxidizable and problem of electrochemical corrosion in electrolytic process, reduce electrolysis later stage contact voltage, there is obvious economic benefit.
Description
Technical field
The present invention relates to a kind of method of contact rod anti-oxidant treatment in lead electrolysis system, belong to non-ferrous metal metallurgy technology
Field.
Background technology
At present, save the energy, reduce energy consumption, cleaning production, construction of energy economizing type, environment-friendly enterprise becomes has
The trend of the times of non-ferrous metal smelting industry.In lead-zinc smelting enterprise, tank voltage is critically important as in lead electrolysis system one
Technical-economic index, its height directly affects quality and the unit dc consumption index of cathode lead.Tank voltage in process of production
Fluctuate along with the change of technical conditions between 0.3～0.6V, be mainly distributed on electrolyte voltage drop, each contact point voltage
Fall, conductor voltage fall and the earth of positive pole and concentration extreme difference.The most each contact point voltage drop accounts for about the 8.9% of tank voltage, some enterprise
The highest.Therefore, how to reduce this contact point voltage drop, to reduce tank voltage, reduce the unit dc consumption of lead electrolysis, improve
Economic benefit, it appears particularly important.Xian Qian smelting enterprise typically use T2 red copper as the contact rod of cathode sheets, and bright and clean negative electrode
Contact rod is mainly added after rice husk rolls scouring, or pickling together with dilute sulfuric acid sweet its surface smear one layer by contact rod
Oil.Although the method can remove contact rod surface and form oxide film and filth, to reach bright and clean effect.Loading electrolysis bath
Contact rod, causes its surface oxidation because being affected by temperature, acid mist etc., forms one layer of oxide film.Along with the lengthening of electrolysis time,
Degree of oxidation is more and more heavier, adds and is affected by electrochemical corrosion so that it is contact point resistance increases, to electrolysis later stage contact electricity
Pressure drastically raises.At the glycerol of its surface smear one layer, as well as vaporization at high temperature, do not reach antioxidative effect.
Summary of the invention
The purpose of the present invention is in order to overcome the weak point of above-mentioned technique, and provides contact rod in a kind of lead electrolysis system to resist
The method of oxidation processes.Reduction, under the bright and clean premise of contact rod, by one layer of antioxidant of its surface uniform application, is connect by the method
Contact drop is extremely obvious, thus reduces tank voltage, reduces unit dc consumption, has good economic benefit.
For reality foregoing invention purpose, in the present invention a kind of lead electrolysis system, the method for contact rod anti-oxidant treatment, adopts
Concrete production method as follows:
Step one: 300～450 poles/time contact rod is put into optical wand machine bucket, be initially charged 1～the concentration of 1.5kg/ time be
10～25% dilute sulfuric acid and contact rod mix.Add the thick shell of fresh Oryza glutinosa of 7～10kg/ time, rotate optical wand machine, make contact rod
Clean mutually with rice husk；
Step 2: after rotating 15～20min, sieve removes rice husk.Add 1～the concentration of 1.5kg/ time be 10～25% dilute sulfur
Acid carries out white picking, finally cleans up with water, and dries rapidly, bending should give aligning or change；
Step 3: when casting anode strip, at the uniform thin anti-oxidation protection film of contact rod surface smear one layer.
Above-mentioned antioxidant is the mixed aqueous solution of alcohol, amide and benzotriazole or TTA, institute
Stating alcohol is one or more in methanol, ethanol and propanol；Described amide is Methanamide, dimethylformamide, dimethylacetamide
One or more in amine.
The present invention compared with prior art has the advantage that
The present invention is a kind of method of contact rod anti-oxidant treatment in lead electrolysis system, and contact rod is through dilute sulfuric acid quadratic acid
After washing bright and clean measure, at its surface uniform application a thin layer antioxidant.Mainly effective for the oxygen in copper ion and nature
Separate, copper and the oxidation of copper alloy can be solved and by problems such as electrochemical corrosion.After adding antioxidant, surface is formed all
Even protective film.Compared to the prior art, overcome and aoxidized at phase after electrolysis, contact rod surface and sheet lead parcel and acid
The impact of mist volatilization electrochemical corrosion causes the problem that resistance increases, thus effectively solves electrolysis later stage contact voltage and drastically rise
High.The voltage drop of contact point is reduced to existing 10～20mV by original 40～200mV, and along with electrolysis time lengthens without bright
Aobvious bounce-back, extremely obvious to reducing contact point voltage drop effect, overcome contact rod with low quality and cause voltage to increase
Effective method.The method is convenient to operation, contact rod stable performance, anti-oxidization time dirt lasting, with low cost, low
Dye, has good feasibility and economic benefit.
Accompanying drawing explanation
Accompanying drawing 1 is the technological process signal of the method for contact rod anti-oxidant treatment in a kind of lead electrolysis system of the present invention
Figure.
Detailed description of the invention
Describe the present invention in detail below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment 1
Step one: 350 contact rods are put into optical wand machine bucket, the concentration being initially charged 1kg is 10% dilute sulfuric acid and contact rod
Mixing.Add the thick shell of fresh Oryza glutinosa of 7kg, rotate optical wand machine, make contact rod clean mutually with rice husk；
Step 2: after rotating 15min, sieve removes rice husk.The concentration adding 1kg is that 10% dilute sulfuric acid carries out white picking,
Clean up with water afterwards, and dry rapidly, bending should be given aligning or change；
Step 3: when casting anode strip, at the uniform thin anti-oxidation protection film of contact rod surface smear one layer.
Through the observation of an electrolysing period, normal production groove measures with smearing antioxidant electrolysis bath contact point voltage drop
Comparative result is as follows:
Contact point voltage drop measurement result contrast mV
| Conduction time/h | 12 | 24 | 48 | More than 56 |
| Normally produce groove | 29.8 | 56.3 | 91.7 | 188.6 |
| Add antioxidant electrolysis bath | 8.7 | 9.4 | 11.58 | 19.8 |
Embodiment 2
Step one: 350 contact rods are put into optical wand machine bucket, the concentration being initially charged 1kg is 15% dilute sulfuric acid and contact rod
Mixing.Add the thick shell of fresh Oryza glutinosa of 8kg/ time, rotate optical wand machine, make contact rod clean mutually with rice husk；
Step 2: after rotating 15min, sieve removes rice husk.The concentration adding 1kg is that 15% dilute sulfuric acid carries out white picking,
Clean up with water afterwards, and dry rapidly, bending should be given aligning or change；
Step 3: when casting anode strip, at the uniform thin anti-oxidation protection film of contact rod surface smear one layer.
Through the observation of an electrolysing period, normal production groove measures with smearing antioxidant electrolysis bath contact point voltage drop
Comparative result is as follows:
Contact point voltage drop measurement result contrast mV
| Conduction time/h | 12 | 24 | 48 | More than 56 |
| Normally produce groove | 29.8 | 56.3 | 91.7 | 188.6 |
| Add antioxidant electrolysis bath | 7.38 | 8.8 | 9.4 | 17.5 |
Embodiment 3
Step one: 350 contact rods are put into optical wand machine bucket, be initially charged the concentration of 1.5kg/ time be 20% dilute sulfuric acid with
Contact rod mixes.Add the thick shell of fresh Oryza glutinosa of 10kg, rotate optical wand machine, make contact rod clean mutually with rice husk；
Step 2: after rotating 20min, sieve removes rice husk.The concentration adding 1.5kg is that 20% dilute sulfuric acid carries out white picking,
Finally clean up with water, and dry rapidly, bending should be given aligning or change；
Step 3: when casting anode strip, at the uniform thin anti-oxidation protection film of contact rod surface smear one layer.
Through the observation of an electrolysing period, normal production groove measures with smearing antioxidant electrolysis bath contact point voltage drop
Comparative result is as follows:
Contact point voltage drop measurement result contrast mV
| Conduction time/h | 12 | 24 | 48 | More than 56 |
| Normally produce groove | 29.8 | 56.3 | 91.7 | 188.6 |
| Add antioxidant electrolysis bath | 6.98 | 8.34 | 8.63 | 16.2 |
Claims (4)
1. the method for contact rod anti-oxidant treatment in a lead electrolysis system, it is characterised in that: contact rod is put into optical wand machine bucket
In, add concentration be 10～25% dilute sulfuric acid and the thick shell of fresh Oryza glutinosa carry out pickling；After pickling terminates, sieve removes rice husk, then uses dilute sulfur
Acid carries out white picking, finally cleans up with water；When casting anode strip, by one layer of suitable antioxidant of its surface smear,
Surface is made to form uniform protecting film；Above-mentioned antioxidant is the mixed aqueous solution of alcohol, amide and BTA, or alcohol, acyl
Amine and the mixed aqueous solution of methyl benzotriazazole；Described alcohol is one or more in methanol, ethanol and propanol；Described
Amide is Methanamide, one or more in dimethylformamide, dimethyl acetylamide.
2. the method for contact rod anti-oxidant treatment in lead electrolysis system as claimed in claim 1, it is characterised in that: adding concentration is
10～25% dilute sulfuric acid and the thick shell pickling of fresh Oryza glutinosa, remove one layer of oxide film and filth that contact rod surface is formed.
3. the method for contact rod anti-oxidant treatment in lead electrolysis system as claimed in claim 1, it is characterised in that: casting anode
Sheet, by one layer of suitable antioxidant of contact rod surface smear, makes surface form uniform protecting film, in order to after reducing electrolysis
Phase contact voltage.
4. the method for contact rod anti-oxidant treatment in lead electrolysis system as claimed in claim 1, it is characterised in that: contact rod adds
Amount for 300-450 root/time, Oryza glutinosa thick shell addition is 7～10Kg/ time, and dilute sulfuric acid addition is 1～1.5Kg/ time, optical wand machine
Rotational time is 15～20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246779.5A CN104005042B (en) | 2014-06-06 | 2014-06-06 | A kind of method of contact rod anti-oxidant treatment in lead electrolysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246779.5A CN104005042B (en) | 2014-06-06 | 2014-06-06 | A kind of method of contact rod anti-oxidant treatment in lead electrolysis system |
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| CN104005042A CN104005042A (en) | 2014-08-27 |
| CN104005042B true CN104005042B (en) | 2016-08-24 |
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| CN107475747B (en) * | 2017-07-28 | 2018-10-09 | 东营方圆有色金属有限公司 | A kind of method of the multiple new cupric electrolysis conductive rod of low cost |
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| US7306663B2 (en) * | 2003-08-05 | 2007-12-11 | Halox, Division Of Hammond Group, Inc. | Corrosion inhibitor |
| CN102174700A (en) * | 2011-03-02 | 2011-09-07 | 哈尔滨六环涂料化工有限公司 | Copper powder antioxidant |
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