CN104164681B - A kind of electrolytic cell is producing aluminium technique for taking inventory - Google Patents
A kind of electrolytic cell is producing aluminium technique for taking inventory Download PDFInfo
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- CN104164681B CN104164681B CN201410347049.4A CN201410347049A CN104164681B CN 104164681 B CN104164681 B CN 104164681B CN 201410347049 A CN201410347049 A CN 201410347049A CN 104164681 B CN104164681 B CN 104164681B
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Abstract
The invention belongs to the technical field of aluminum electrolysis, be specifically related to a kind of electrolytic cell and producing aluminium technique for taking inventory.When the present invention is to solve Aluminum Electrolysis Production, take inventory electrolytic cell and produce the big problem of aluminium data deviation, and then provide a kind of electrolytic cell producing aluminium technique for taking inventory, use zinc as tracer element, it is determined by adding zinc doses m, preheating zinc material, the Zn content a1 analyzing in primary aluminum sample, adds zinc material, sampling, the several step of Zn content a2 analyzing in aluminium sample again, utilize formula M=[m × k (m+n) × a2]/(a2 a1) to calculate and producing aluminum amount.The present invention is carried out compared with product aluminium is taken inventory with adding copper. operate simpler, more convenient execution；Take inventory result more accurate, have more referential, be more beneficial for Instructing manufacture, and cost is lower.
Description
Technical field
The invention belongs to the technical field of aluminum electrolysis, be specifically related to a kind of electrolytic cell and producing aluminium technique for taking inventory.
Background technology
In aluminum electrolysis, topmost performance assessment criteria is tank voltage and current efficiency, under identical tank voltage, and electricity
The height of stream efficiency just determines the quality of economic indicator.When current efficiency is calculated, except the statistics of aluminum yield,
Important link is exactly in the calculating producing aluminum amount in electrolytic bath, i.e. the taking inventory of aluminium in electrolytic cell.Accurately take inventory out electrolytic cell
Aluminum amount in groove, has important directive significance for actual production.
In current aluminum electrolysis, having two kinds: one to the technique for taking inventory of liquid aluminum amount in producing electrolytic bath is dilution method,
Two is the Return Law, is required for a kind of tracer element.Tracer element: add a kind of metallic element in aluminium liquid in aluminium cell,
Under electrolysis temperature, it can be dissolves uniformly in aluminium liquid, does not dissolves in the electrolyte, does not reacts with aluminium, electrolyte, can
By the change of its concentration in primary aluminum, calculate aluminum amount in electrolytic bath.
At present conventional add copper (Cu) and take inventory, deviation in various degree occurs, take inventory the accuracy of result it cannot be guaranteed that,
Reason is as follows:
1. tracer element copper (Cu) dissolution time in electrolytic cell is long, just can be completely dissolved, the phase after generally needing 8～12 hours
Between concentration unstability increase.2. copper mentioned here should be fine copper (red copper or cathode copper), the high purity 99.95-of copper
99.99%, density is 8-9g/cm3, and fusing point has 1083 ° of C especially.But some enterprises use brass, and brass is ormolu,
Purity is inadequate, can directly affect and take inventory result.3. containing the oxide corresponding to tracer element copper in raw material.4. tracer element copper
Easily primary aluminum is formed and pollute.
Content of the invention
When the present invention is to solve Aluminum Electrolysis Production, take inventory electrolytic cell and producing the big problem of aluminium data deviation, and then provide
A kind of electrolytic cell is producing aluminium technique for taking inventory.
The present invention adopts the following technical scheme that
A kind of electrolytic cell is producing aluminium technique for taking inventory, and the tracer element being used is zinc, and its concrete operation step is:
(1), taking inventory groove to choose, taking inventory the aluminium flowing-out mouth of electrolytic cell, floss hole respectively takes an aluminium sample, chemically examines at two
The content of tracer element zinc in aluminium sample, takes the mean value a1 of Zn content in aluminium sample at two, and records sample time；
(2) after, taking background aluminium sample, weigh the zinc material that quality is m and cut into bulk, being divided into two equal portions respectively from going out aluminium
Mouthful, floss hole iron implements hold cutting after spelter, make spelter stand 5-8min in aluminium liquid, more slowly put into electrolytic cell
In；
(3), after 8 hours, at the aluminium flowing-out mouth of taking inventory groove former, floss hole, take an aluminium sample respectively again, taken aluminium sample respectively with
In step (1), aluminium flowing-out mouth, floss hole taken aluminium sample equivalent, then chemically examine the content of tracer element zinc in aluminium sample at two, take at two
The mean value a2 of Zn content in aluminium sample；
(4), the analysis result according to Zn-ef ficiency content twice, calculates the aluminium content in electrolytic cell, and computing formula is:
M=[m×k -(m+n)×a2]/(a2-a1 )
Wherein, aluminum amount in M groove, units/kg；
The Zn-ef ficiency quality that m adds, units/kg；
The purity of k Zn-ef ficiency；
The product aluminum amount of electrolytic cell in n inventory procedure, electrolytic cell currents efficiency (need to be estimated by the aluminum yield taking nearly month
Value), units/kg；
A1 takes inventory the content of Zn-ef ficiency in front electrolytic cell；
A2 takes inventory the content of Zn-ef ficiency in rear electrolytic cell.
Quality m of the tracer element zinc adding when every electrolytic cell is taken inventory every time is 4～10kg.
Described tracer element zinc needs to be fully warmed-up to dry without moisture before adding electrolytic cell.
Spelter put into by described step (2) electrolytic cell after 1 hour, furnace bottom need to be stirred with iron implements.
Described Zn-ef ficiency content analysis precision is ppm.
There is advantages that
1st, the method taken inventory at product aluminium is needed to add twice as tracer element by former employing copper, assay three times, zinc
Taking inventory and having only to add once, assay is twice, it is simple to perform；
2nd, the fusing point of zinc is low, and the quality impact on the primary aluminum in electrolytic cell is less, takes inventory result more accurately, has more ginseng
The property examined, beneficially Instructing manufacture；
3rd, to compare price relative to metals such as copper lower for zinc, is more beneficial for cost control.
Detailed description of the invention
Because of the fusing point of Zn-ef ficiency low (419.58 DEG C), and its little on the impact of primary aluminum quality and low cost feature, select
Zinc is as producing the tracer element that aluminium is taken inventory, and taking inventory the concrete operation step producing aluminium quality is:
(1), choosing and taking inventory groove, taking inventory the aluminium flowing-out mouth of electrolytic cell, floss hole respectively takes an aluminium sample, chemically examines at two in aluminium sample
The content of tracer element zinc, takes the mean value a1 of Zn content in aluminium sample at two, and records sample time；
(2) after, taking background aluminium sample, weigh the zinc material that quality is 6kg and cut into 10-20 block, to ensure that zinc material can be
It is completely dissolved in the scheduled time in electrolytic cell, zinc material is fully warmed-up and makes its drying be divided into two parts (every part of 3kg) without after moisture
Spelter after aluminium flowing-out mouth, floss hole iron implements hold cutting respectively, makes spelter stand 5-8min in aluminium liquid, more slowly
Put into electrolytic cell, after 1 hour, stir furnace bottom with iron implements, it is to avoid spelter sinks to furnace bottom；
(3), after 8 hours, at the aluminium flowing-out mouth of taking inventory groove former, floss hole, an aluminium sample, the matter of taken aluminium sample are respectively taken respectively again
Amount should be equal with the aluminium sample quality being taken at aluminium flowing-out mouth in step (1), floss hole, then chemically examines at two tracer element zinc in aluminium sample
Content, take the mean value a2 of Zn content in aluminium sample at two；
(4), the analysis result (analysis precision is ppm) according to Zn-ef ficiency content twice, calculates the aluminium content in electrolytic cell,
Computing formula is: M=[m × k-(m+n) × a2]/(a2-a1).
Wherein the addition of zinc material should consider the cost of the aluminium liquid measure in electrolytic cell and zinc material, and the value of m is general
For 4-10kg.
Claims (5)
1. an electrolytic cell is producing aluminium technique for taking inventory, it is characterised in that: the tracer element being used is zinc, its concrete operation step
For:
(1), taking inventory groove to choose, taking inventory the aluminium flowing-out mouth of electrolytic cell, floss hole respectively takes an aluminium sample, chemically examines aluminium sample at two
The content of middle tracer element zinc, takes the mean value a1 of Zn content in aluminium sample at two, and records sample time；
(2), after, taking background aluminium sample, weigh the zinc material that quality is m and cut into bulk, be divided into two equal portions respectively from aluminium flowing-out mouth,
Floss hole iron implements hold cutting after spelter, make spelter stand 5-8min in aluminium liquid, more slowly put into electrolytic cell；
(3), after 8 hours, at the aluminium flowing-out mouth of taking inventory groove former, floss hole, take an aluminium sample respectively again, taken aluminium sample respectively with step
(1) in, aluminium flowing-out mouth, floss hole taken aluminium sample equivalent, then chemically examine the content of tracer element zinc in aluminium sample at two, take aluminium sample at two
The mean value a2 of middle Zn content；
(4), the analysis result according to Zn-ef ficiency content twice, calculates the aluminium content in electrolytic cell, and computing formula is:
M=[m×k -(m+n)×a2]/(a2-a1 )
Wherein, aluminum amount in M groove, units/kg；
The Zn-ef ficiency quality that m adds, units/kg；
The purity of k Zn-ef ficiency；
The product aluminum amount of electrolytic cell, units/kg in n inventory procedure；
A1 takes inventory the content of Zn-ef ficiency in front electrolytic cell；
A2 takes inventory the content of Zn-ef ficiency in rear electrolytic cell.
2. electrolytic cell according to claim 1 is producing aluminium technique for taking inventory, it is characterised in that: when every electrolytic cell is taken inventory every time
Quality m of the tracer element zinc adding is 4～10kg.
3. electrolytic cell according to claim 2 is producing aluminium technique for taking inventory, it is characterised in that: described tracer element zinc is adding
Need before entering electrolytic cell to be fully warmed-up to dry without moisture.
4. electrolytic cell according to claim 1 is producing aluminium technique for taking inventory, it is characterised in that: by spelter in described step (2)
After putting into electrolytic cell 1 hour, furnace bottom need to be stirred with iron implements.
5. electrolytic cell according to claim 1 is producing aluminium technique for taking inventory, it is characterised in that: described Zn-ef ficiency content analysis essence
Degree is ppm.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105671595A (en) * | 2016-03-10 | 2016-06-15 | 河南中孚实业股份有限公司 | Method for monitoring current efficiency of aluminum electrolytic cell |
| CN107201534B (en) * | 2017-05-27 | 2019-03-19 | 重庆旗能电铝有限公司 | One kind going out aluminium task computation method |
| CN110699709A (en) * | 2019-10-10 | 2020-01-17 | 重庆旗能电铝有限公司 | Aluminum yield inventory method for aluminum electrolysis single cell |
| CN113337852A (en) * | 2021-04-30 | 2021-09-03 | 云南云铝泽鑫铝业有限公司 | Method for online production of aluminum intermediate alloy liquid by aluminum electrolysis cell |
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| CN201144292Y (en) * | 2007-12-27 | 2008-11-05 | 郑州经纬科技实业有限公司 | Real-time measurement device for aluminum cell current efficiency |
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| CN201144292Y (en) * | 2007-12-27 | 2008-11-05 | 郑州经纬科技实业有限公司 | Real-time measurement device for aluminum cell current efficiency |
| CN101545119A (en) * | 2009-03-30 | 2009-09-30 | 郑州经纬科技实业有限公司 | Analyzer for current efficiency of aluminium cell |
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Address after: 043304 north of Longmen Road, Yuncheng, Shanxi, Hejin Patentee after: China Aluminum Shanxi new materials Co., Ltd. Address before: 043304 north of Longmen Road, Yuncheng, Shanxi, Hejin Patentee before: Shanxi Huaze Aluminum & Power Co., Ltd. |
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Effective date of registration: 20200116 Address after: Wa Tang Zhen Xing Han Cun, Xing County, Luliang City, Shanxi Province Patentee after: Shanxi Chalco China Resources Co., Ltd Address before: 043304 north of Longmen Road, Yuncheng, Shanxi, Hejin Patentee before: China Aluminum Shanxi new materials Co., Ltd. |
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