CN1469118A - Method and device of on-line detecting effective aluminium content in zinc pond - Google Patents
Method and device of on-line detecting effective aluminium content in zinc pond Download PDFInfo
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- CN1469118A CN1469118A CNA031245455A CN03124545A CN1469118A CN 1469118 A CN1469118 A CN 1469118A CN A031245455 A CNA031245455 A CN A031245455A CN 03124545 A CN03124545 A CN 03124545A CN 1469118 A CN1469118 A CN 1469118A
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- aluminium
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- zinc
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Abstract
The present invention relates to the on-line detection of effective aluminum content in zinc pond for hot leaching of zinc. The technological scheme includes the key points of connecting data acquisition module to computer, containing thermocouple to the data acquisition module, connecting the primary cell comprising aluminum strip as anode, alloy jacket as cathode and chlorinated salt containing aluminum chloride as electrolyte to the data acquisition module. It is developed based on the primary cell principle and by utilizing the relationship of the electromotive force and the activity and content of aluminum. Experiment shows that the said device has measurement precision up to 3 % and continuous service life of over 7 days. In addition, several detectors may be used in simultaneous multipoint measurement if necessary.
Description
Affiliated technical field
The present invention relates to a kind of detection method and pick-up unit thereof that is used for galvanizing by dipping zinc pond, especially a kind of method and pick-up unit thereof that detects effective aluminium in the zinc pond.
Background technology
In the hot-dip galvanizing technique process, in the zinc pond, behind an amount of aluminium of adding, can form one deck Fe fast on the surface of steel
2Al
5Compound layer stops the formation of iron zinc compound, reduces alloy layer thickness, improves coating surface quality, improves toughness and the bond strength and the processibility of coating.But aluminium content is crossed when hanging down, and thickness of coating is excessive, and the formed product performance is low, can form FeZn in the zinc pond
10The bottom cadmia; And the aluminium too high levels can make coating imperfect, influences the annealing process and the weldability of galvanizing production.Thereby effective aluminium of therefore fast, accurately measuring in the aluminium amount control zinc pond in the zinc pond is extremely important.Test total aluminum content that the aluminum content that draws is the compound of various aluminium contained in the zinc pond with traditional chemico-analytic method of sampling, rather than the actual aluminum content that is dissolved in the effective aluminium in the zinc liquid that works; And the method institute time-consuming of this sample analysis is long, can not reflect the effective aluminium content in the zinc pond rapidly.
Summary of the invention
The purpose of this invention is to provide that a kind of detection speed is fast, precision is high, the effective method of aluminium in the online detection zinc pond of long service life, another object of the present invention provides a kind of pick-up unit that is used for above-mentioned detection method.
The technical solution adopted for the present invention to solve the technical problems is: utilize the activity of electromotive force and aluminium and the content that the relation between the content measures the effective aluminium in the zinc-plated zinc pond in real time.It by thermopair 8 and the primary element of making anode with aluminum strip as survey sensing device through data acquisition module 9 as calculated machine 10 calculate effective aluminium content real-time in the zinc pond.Adopting weight ratio in the described primary element is 1: (0.5～10): (1～3): the aluminum chloride of (1～3), and sodium chloride, potassium chloride and lithium chloride are made electrolyte, and the aluminum strip 1 of making anode adopts highly purified aluminium wire.
Be used for the effectively pick-up unit of the method for aluminium of above-mentioned online detection zinc pond, it comprise the data acquisition module 9 that joins with computing machine 10 and with the thermopair 8 that data acquisition module 9 joins, it is characterized in that: make anode, alloy overcoat 3 with aluminum strip 1 and make negative electrode and make primary element and data acquisition module 9 that electrolyte constitutes to join with the chlorate that contains aluminum chloride.Quartz glass tube 4 is packed in the alloy overcoat 3, in quartz glass tube 4, fill electrolyte 2, the lower end of anode aluminum strip 1 penetrates in the electrolyte 2 in the quartz glass tube 4 by the quartz glass conduit 6 that is packed in quartz glass 4 upper ends, and the upper end of anode aluminum strip 1 and alloy overcoat 3 join by lead and data acquisition module 9 respectively.The upper end of alloy overcoat 3 is sleeved in the support 7.Quartz glass tube 4 connects firmly by adhesive layer 5 and alloy overcoat 3, and alloy overcoat 3 is stretched out in the lower end of quartz glass tube 4, and sets up groove separately in the bottom that quartz glass tube 4 stretches out alloy overcoat 3.Anode aluminum strip 1 and alloy overcoat 3 adopt high purity metal aluminium and stainless steel respectively.
The invention has the beneficial effects as follows, according to galvanic principles, utilize the activity of electromotive force and aluminium and the relation of content, the content of can on-line continuous measuring the effective aluminium in the zinc-plated zinc pond, its reaction is fast, the precision height, long service life, and can utilize the multimetering simultaneously of a plurality of detectors as required.Show that by experiment this measurement device precision reaches 3%, serviceable life was above 7 days continuously.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structure principle chart of the present invention.
1. anode aluminum strips among the figure, 2. electrolyte, 3. alloy overcoat, 4. quartz glass tube, 5. adhesive layer, 6. quartz glass conduit, 7. support, 8. thermopair, 9. data acquisition module, 10. computing machine.
Embodiment
Basic functional principle of the present invention is: utilize NaCl-AlCl
3Melt+solid NaCl+ solid K Cl+ solid LiCl is an electrolyte, and the fine aluminium silk is an electrode, primary element composed as follows: fine aluminium | solid NaCl+ solid K Cl+ solid LiCl+NaCl-AlCl
3Melt | molten zinc (containing aluminium)
The expression formula of the electromotive force of this primary element is:
In the formula: E is an electromotive force, and R is a gas law constant, and T is the Zn-Al melt temperature, and F is a Faraday constant, a
AlActivity for aluminium in the Zn-Al melt.
Calculate the content of effective aluminium in the zinc pond according to the activity and the relation of effective aluminium content.
Embodiment 1, as shown in Figure 1, the present invention adopts raffinal to make anode 1, with 1: 0.5 to 1: 10 aluminum chloride, sodium chloride is electrolyte 2, stainless steel outer sleeve 3 is made negative electrode and is formed primary element, the electrolyte sealability of primary element is in quartz glass tube 4, and quartz ampoule connects firmly by the tube inwall of high-temperature agglomerant layer 5 with stainless steel outer sleeve 3.In use, the bottom of quartz glass tube 4 is severed, aluminium electrode 1 upper end is connected with shielding line, then signal wire and data acquisition module are linked, then connect stainless steel outer sleeve and support 7, then whole device is immersed the position that requires in the zinc pond, after this bottom with thermopair extend into the degree of depth identical with the quartz ampoule bottom, measures the electromotive force of primary element.By data acquisition module 9 primary element and thermopair 8 electromotive force signals are changed into data-signal and are input to computing machine 10, according to electromotive force and effectively the relational expression conversion Calculation of aluminium go out effective aluminium content with device joint, bottom.For reducing the interference of environment to signal, all connect lead and adopt shielded conductor.
Embodiment 2, for easy to operate, stretch out the bottom of alloy overcoat 3 at quartz glass tube 4 and set up groove separately.In use, at first quartz glass tube 4 is fractureed at its lower end groove.All the other are with embodiment 1.
Claims (8)
1, the effective method of aluminium in a kind of online detection zinc pond is characterized in that: utilize the activity of electromotive force and aluminium and the content that the relation between the content measures the effective aluminium in the zinc-plated zinc pond in real time.
2, the effective method of aluminium in the online detection zinc according to claim 1 pond is characterized in that: it by thermopair (8) and the primary element of making anode with aluminum strip as the detection sensing device through data acquisition module (9) as calculated machine (10) calculate effective aluminium content real-time in the zinc pond.
3, the effective method of aluminium in the online detection zinc according to claim 1 pond, it is characterized in that: adopting weight ratio in the described primary element is 1: (0.5～10): (1～3): the aluminum chloride of (1～3), sodium chloride, potassium chloride and lithium chloride are made electrolyte, and the aluminum strip (1) of making anode adopts highly purified aluminium wire.
4, a kind of pick-up unit that is used for according to the method for the effective aluminium in the described online detection zinc of claim 1 pond, it comprise the data acquisition module (9) that joins with computing machine (10) and with the thermopair (8) that data acquisition module (9) joins, it is characterized in that: make anode, alloy overcoat (3) with aluminum strip (1) and make negative electrode and make primary element and data acquisition module (9) that electrolyte constitutes to join with the chlorate that contains aluminum chloride.
5, the effective device of aluminium in the online detection zinc according to claim 4 pond, it is characterized in that: quartz glass tube (4) is packed in the alloy overcoat (3), in quartz glass tube (4), fill electrolyte (2), the lower end of anode aluminum strip (1) penetrates in the interior electrolyte (2) of quartz glass tube (4) by the quartz glass conduit (6) that is packed in quartz glass (4) upper end, and the upper end of anode aluminum strip (1) and alloy overcoat (3) join by lead and data acquisition module (9) respectively.
6, the effective device of aluminium in the online detection zinc according to claim 5 pond, it is characterized in that: the upper end of alloy overcoat (3) is sleeved in the support (7).
7, the effective device of aluminium in the online detection zinc according to claim 5 pond, it is characterized in that: quartz glass tube (4) connects firmly by adhesive layer (5) and alloy overcoat (3), alloy overcoat (3) is stretched out in the lower end of quartz glass tube (4), and sets up groove separately in the bottom that quartz glass tube (4) stretches out alloy overcoat (3).
8, the effective device of aluminium in the online detection zinc according to claim 5 pond, it is characterized in that: anode aluminum strip (1) and alloy overcoat (3) adopt high purity metal aluminium and stainless steel respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124545 CN1220054C (en) | 2003-06-13 | 2003-06-13 | Method and device of on-line detecting effective aluminium content in zinc pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124545 CN1220054C (en) | 2003-06-13 | 2003-06-13 | Method and device of on-line detecting effective aluminium content in zinc pond |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1469118A true CN1469118A (en) | 2004-01-21 |
| CN1220054C CN1220054C (en) | 2005-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03124545 Expired - Fee Related CN1220054C (en) | 2003-06-13 | 2003-06-13 | Method and device of on-line detecting effective aluminium content in zinc pond |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858613B (en) * | 2005-05-08 | 2010-08-11 | 王宏栋 | Detecting method and device for lithium ion cell material |
-
2003
- 2003-06-13 CN CN 03124545 patent/CN1220054C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858613B (en) * | 2005-05-08 | 2010-08-11 | 王宏栋 | Detecting method and device for lithium ion cell material |
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| Publication number | Publication date |
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| CN1220054C (en) | 2005-09-21 |
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Granted publication date: 20050921 Termination date: 20100613 |