CN118134279B - Zinc liquid level slag polymerization effect evaluation method - Google Patents
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 87
- 239000011701 zinc Substances 0.000 title claims abstract description 87
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 239000002893 slag Substances 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 title claims abstract description 33
- 238000011156 evaluation Methods 0.000 title claims abstract description 23
- 238000006116 polymerization reaction Methods 0.000 title claims description 14
- 238000004220 aggregation Methods 0.000 claims abstract description 146
- 230000002776 aggregation Effects 0.000 claims abstract description 146
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000011259 mixed solution Substances 0.000 claims description 103
- 238000005246 galvanizing Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 6
- 108010015046 cell aggregation factors Proteins 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本发明提供一种锌液面渣聚合效果评价方法，包括：确定影响因素，影响因素包括频率、电流和锌磁液面距；选取任一影响因素作为待评价因素，待评价因素具有初始值，以初始值进行试验，得到第一相对聚集度；仅将初始值调整为修改值，以修改值进行试验，得到第二相对聚集度；根据初始值、修改值、第一相对聚集度和第二相对聚集度得到待评价因素的评价结果。根据评价结果能够反映各影响因素对电磁聚渣效果的影响，有助于分析出电磁聚渣的最优参数，对指导现场镀锌线的锌锅聚渣具有重要意义。
The present invention provides a method for evaluating the aggregation effect of zinc liquid surface slag, comprising: determining influencing factors, the influencing factors including frequency, current and zinc magnetic liquid surface distance; selecting any influencing factor as a factor to be evaluated, the factor to be evaluated has an initial value, testing with the initial value to obtain a first relative aggregation degree; adjusting only the initial value to a modified value, testing with the modified value to obtain a second relative aggregation degree; obtaining an evaluation result of the factor to be evaluated according to the initial value, the modified value, the first relative aggregation degree and the second relative aggregation degree. The evaluation result can reflect the influence of each influencing factor on the electromagnetic slag aggregation effect, help analyze the optimal parameters of electromagnetic slag aggregation, and is of great significance for guiding the zinc pot slag aggregation of the on-site galvanizing line.
Description
Technical Field
The invention relates to the technical field of zinc liquid slag removal, in particular to a zinc liquid slag polymerization effect evaluation method.
Background
The zinc pot is core equipment of a continuous hot galvanizing production line, zinc slag generated in the galvanizing process affects the surface quality of the galvanized sheet, and the galvanized sheet product is scrapped when serious. The zinc crucible slagging-off worker needs to carry out one slagging-off operation every 40 minutes to 60 minutes. However, the temperature of the surrounding environment of the zinc crucible is high, the operation space is narrow, the working danger of workers is high, the labor intensity is high, the fluctuation of the liquid level is easy to be caused by manual slag skimming, and the surface quality of the galvanized sheet is influenced, so that new technology is urgently required to be developed, the labor intensity and the working environment of the workers are reduced, the fluctuation of the zinc liquid is too strong, and the quality of the galvanized sheet is ensured.
The electromagnetic separation technology is to separate the inclusion from the metal melt by utilizing the principle of the difference of the conductivity between the metal melt and the melt. In the prior art, no absolute effective evaluation method is available for evaluating the effect of the zinc dross in the electromagnetic separation technology, both in the test stage and in the application aspect of the production line.
In view of the above, the present invention provides a method for evaluating the polymerization effect of zinc liquid level slag.
Disclosure of Invention
In accordance with the above-mentioned shortcomings, a method for evaluating the polymerization effect of zinc liquid level slag is provided. The method mainly utilizes the initial relative aggregation degree, the test relative aggregation degree, the first relative aggregation degree and the second relative aggregation degree to obtain the evaluation result of the influence factors, and the effect of the zinc dross is reflected through the evaluation result.
The invention adopts the following technical means:
The invention provides a zinc liquid level slag polymerization effect evaluation method, which comprises the following steps:
Determining influencing factors, wherein the influencing factors comprise frequency, current and zinc magnetic liquid surface distance;
Selecting any influence factor as a factor to be evaluated, wherein the factor to be evaluated has an initial value, and performing a test by using the initial value to obtain a first relative aggregation degree;
Only adjusting the initial value to be a modified value, and performing a test with the modified value to obtain a second relative degree of aggregation;
and obtaining an evaluation result of the factor to be evaluated according to the initial value, the modification value, the first relative aggregation degree and the second relative aggregation degree.
Further, the testing with the initial value to obtain a first relative aggregation degree includes:
Mixing M zinc residues with N liters of zinc liquid to obtain a first mixed solution, wherein M zinc residues are uniformly distributed in N liters of zinc liquid, the first mixed solution is placed in a first container, the liquid surface area of the first mixed solution is S 1, and the initial relative aggregation degree of the first mixed solution is obtained according to the liquid surface areas of M zinc residues and the first mixed solution;
Keeping the other influence factors unchanged, wherein the factor to be evaluated is the initial value, performing aggregation operation on the first mixed solution, orthographic projection of M zinc residues on the liquid level of the first mixed solution is a plurality of first projection points, the liquid level of the first mixed solution comprises a first area, the first area is a minimum area capable of covering all the first projection points, and the test relative aggregation degree of the first mixed solution is obtained according to the areas of the M zinc residues and the first area;
The first relative degree of aggregation is derived from the initial relative degree of aggregation of the first mixed solution and the experimental relative degree of aggregation of the first mixed solution.
Further, the adjusting the initial value to a modified value only, and performing a test with the modified value to obtain a second relative degree of aggregation includes:
mixing M zinc residues with N liters of zinc liquid to obtain a second mixed solution, uniformly distributing the M zinc residues in the N liters of zinc liquid, placing the second mixed solution in a second container, wherein the second container is identical to the first container, the liquid level area of the second mixed solution is S 2, and obtaining the initial relative aggregation degree of the second mixed solution according to the liquid level areas of the M zinc residues and the second mixed solution;
Keeping other influence factors unchanged, wherein the factors to be evaluated are the modification values, performing aggregation operation on the second mixed solution, orthographic projection of the M zinc residues on the liquid level of the second mixed solution is a plurality of second projection points, the liquid level of the second mixed solution comprises a second area, the second area is a minimum area capable of covering all the second projection points, and obtaining the test relative aggregation degree of the second mixed solution according to the areas of the M zinc residues and the second area;
the second relative degree of aggregation is derived from the initial relative degree of aggregation of the second mixed solution and the experimental relative degree of aggregation of the second mixed solution.
Further, the evaluation result of the factor to be evaluated is obtained according to the initial value, the modification value, the first relative aggregation degree and the second relative aggregation degree, and is calculated according to the following mode:
Wherein Q A is an evaluation result of the factor to be evaluated, D 2 is the second relative aggregation degree, D 1 is the first relative aggregation degree, a 2 is the modified value, and a 1 is the initial value.
Further, the initial relative aggregation degree of the first mixed solution is obtained according to the liquid level areas of the M zinc dross and the first mixed solution, and is calculated according to the following mode:
Wherein D Initially, the method comprises is the initial relative concentration of the first mixed solution, S 1 is the liquid surface area of the first mixed solution, and M is the amount of zinc dross in the first mixed solution.
Further, the test relative aggregation degree of the first mixed solution is obtained according to the areas of the M zinc dross and the first area, and is calculated according to the following mode:
Wherein D Verification is the experimental relative aggregation degree of the first mixed solution, S 2 is the area of the first region, and M is the amount of zinc dross in the first mixed solution.
Further, the first relative degree of aggregation is obtained from the initial relative degree of aggregation of the first mixed solution and the experimental relative degree of aggregation of the first mixed solution, and is calculated as follows:
Wherein D 1 is the first relative degree of aggregation, D Initially, the method comprises is the initial relative degree of aggregation of the first mixed solution, and D Verification is the experimental relative degree of aggregation of the first mixed solution.
Compared with the prior art, the invention has the following advantages:
The zinc liquid level slag polymerization effect evaluation method comprises the steps of determining influence factors, wherein the influence factors comprise frequency, current and zinc magnetic liquid level distance, selecting any influence factor as a factor to be evaluated, testing the factor to be evaluated with an initial value to obtain a first relative aggregation degree, adjusting the initial value to be a modified value, testing the factor to obtain a second relative aggregation degree, and obtaining an evaluation result of the factor to be evaluated according to the initial value, the modified value, the first relative aggregation degree and the second relative aggregation degree. According to the evaluation result, the influence of each influence factor on the electromagnetic slag aggregation effect can be reflected, the analysis of the optimal parameters of the electromagnetic slag aggregation is facilitated, and the method has important significance for guiding the zinc pot slag aggregation of the on-site zinc plating line.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic flow chart of the zinc liquid level slag polymerization effect evaluation method provided by the invention.
FIG. 2 is a schematic drawing of a sample of a first sample.
FIG. 3 is a schematic drawing of a sample of a second sample.
FIG. 4 is a graphical representation of a comparison of metallographic side-planer zinc dross in the first sample 112 region and the second sample 112D region.
Fig. 5 is a comparison of one metallographic side planer zinc dross for the first sample 132 region and the second sample 132D region.
FIG. 6 is a graphical representation of a comparison of one metallographic side planer zinc dross in the first sample 152 region and the second sample 152D region.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for evaluating a polymerization effect of zinc liquid level slag, to illustrate a specific embodiment of the method for evaluating a polymerization effect of zinc liquid level slag, provided by the invention, including:
s1, determining influence factors, wherein the influence factors comprise frequency, current and zinc magnetic liquid surface distance;
s2, selecting any influence factor as a factor to be evaluated, wherein the factor to be evaluated has an initial value, and performing a test with the initial value to obtain a first relative aggregation degree;
S3, only adjusting the initial value to be a modified value, and performing a test with the modified value to obtain a second relative aggregation degree;
And S4, obtaining an evaluation result of the factor to be evaluated according to the initial value, the modified value, the first relative aggregation degree and the second relative aggregation degree.
It can be understood that the influence of each influence factor on the electromagnetic slag aggregation effect can be reflected according to the evaluation result, the analysis of the optimal parameters of the electromagnetic slag aggregation is facilitated, and the method has important significance for guiding the zinc pot slag aggregation of the on-site galvanized wire.
In some alternative embodiments, the test is performed at an initial value to obtain a first relative degree of aggregation, comprising:
Mixing M zinc residues with N liters of zinc liquid to obtain a first mixed solution, uniformly distributing the M zinc residues in the N liters of zinc liquid, placing the first mixed solution in a first container, wherein the liquid level area of the first mixed solution is S 1, and obtaining the initial relative aggregation degree of the first mixed solution according to the liquid level areas of the M zinc residues and the first mixed solution;
Keeping other influencing factors unchanged, performing aggregation operation on the first mixed solution by taking the factors to be evaluated as initial values, orthographic projection of M zinc residues on the liquid level of the first mixed solution is a plurality of first projection points, the liquid level of the first mixed solution comprises a first area, the first area is a minimum area capable of covering all the first projection points, and obtaining the test relative aggregation degree of the first mixed solution according to the areas of the M zinc residues and the first area;
The first relative degree of aggregation is derived from the initial relative degree of aggregation of the first mixed solution and the experimental relative degree of aggregation of the first mixed solution.
In some alternative embodiments, adjusting only the initial value to the modified value, and testing with the modified value, results in a second relative degree of aggregation, comprising:
mixing M zinc residues with N liters of zinc liquid to obtain a second mixed solution, uniformly distributing the M zinc residues in the N liters of zinc liquid, placing the second mixed solution in a second container, wherein the second container is identical to the first container, the liquid surface area of the second mixed solution is S 2, and obtaining the initial relative aggregation degree of the second mixed solution according to the liquid surface areas of the M zinc residues and the second mixed solution;
keeping other influencing factors unchanged, carrying out aggregation operation on the second mixed solution by taking the factors to be evaluated as modified values, orthographic projection of M zinc residues on the liquid level of the second mixed solution is a plurality of second projection points, the liquid level of the second mixed solution comprises a second area, the second area is a minimum area capable of covering all the second projection points, and obtaining the test relative aggregation degree of the second mixed solution according to the areas of the M zinc residues and the second area;
the second relative degree of aggregation is derived from the initial relative degree of aggregation of the second mixed solution and the experimental relative degree of aggregation of the second mixed solution.
In some alternative embodiments, the evaluation result of the factor to be evaluated is obtained according to the initial value, the modified value, the first relative aggregation degree and the second relative aggregation degree, and is calculated according to the following manner:
Wherein, Q A is the evaluation result of the factor to be evaluated, D 2 is the second relative aggregation, D 1 is the first relative aggregation, a 2 is the modified value, and a 1 is the initial value.
In some alternative embodiments, the initial relative degree of aggregation of the first mixed solution is obtained from the M zinc dross and the liquid level area of the first mixed solution, calculated as follows:
Wherein D Initially, the method comprises is the initial relative aggregation degree of the first mixed solution, S 1 is the liquid surface area of the first mixed solution, and M is the amount of zinc dross in the first mixed solution.
In some alternative embodiments, the experimental relative degree of aggregation of the first mixed solution is obtained from the areas of the M zinc dross and the first area, calculated as follows:
Wherein D Verification is the experimental relative aggregation degree of the first mixed solution, S 2 is the area of the first region, and M is the amount of zinc dross in the first mixed solution.
In some alternative embodiments, the first relative degree of aggregation is derived from the initial relative degree of aggregation of the first mixed solution and the experimental relative degree of aggregation of the first mixed solution, calculated as follows:
Wherein D 1 is the first relative degree of aggregation, D Initially, the method comprises is the initial relative degree of aggregation of the first mixed solution, and D Verification is the experimental relative degree of aggregation of the first mixed solution.
In some alternative embodiments, referring to fig. 2-6, fig. 2 is a schematic drawing of a first sample, fig. 3 is a schematic drawing of a second sample, fig. 4 is a comparative drawing of a metallographic side planer of the first sample 112 region and the second sample 112D region, fig. 5 is a comparative drawing of a metallographic side planer of the first sample 132 region and the second sample 132D region, and fig. 6 is a comparative drawing of a metallographic side planer of the first sample 152 region and the second sample 152D region. The first sample is a sample formed by solidifying a zinc slag and zinc liquid mixed solution in a certain container, and after the first sample is heated and melted, electromagnetic slag aggregation treatment is carried out, and then a second sample is formed by solidifying the first sample in the container again. Referring to fig. 2 and 3, the first sample is divided into a left part, a middle part and a right part in the traveling wave direction sequentially, sampling is performed in a 112D zone of the left part, a 132D zone of the middle part and a 152 th zone of the right part, sampling is performed in 112, 132 and 152 zones of the second sample, the 112 zone corresponds to the 112D zone, the 132 zone corresponds to the 132D zone, and the 152 zone corresponds to the 152D zone. Taking electromagnetic slag aggregation treatment to push zinc slag to aggregate towards the edge of a container as an example, referring to fig. 4-6, in fig. 4-6, the upper picture is a metallographic side planing diagram of a first sample, the lower picture is a metallographic side planing diagram of a second sample, the number and the area of zinc slag in the 112 area and the 152 area can be greatly increased, the number and the area of zinc slag in the 132 area are greatly reduced, and the shape of the zinc slag is relatively regular and concentrated, so that the effectiveness of the electromagnetic slag aggregation treatment is proved.
Further, referring to table 1, influence factors of the electromagnetic slag conglomeration process were analyzed.
Firstly, analyzing the influence of frequency on slag aggregation effect, selecting 50A current, and respectively obtaining corresponding relative aggregation values at the frequency of 5Hz, 10Hz, 15Hz and 20Hz, wherein the relative aggregation values show an approximately linear increase along with the increase of the frequency through data analysis. The maximum value of the relative aggregation was 11.4% in the 11 th test, and the minimum value of the relative aggregation was 3.0% in the 1 st test.
Then, analyzing the influence of the current on the slag accumulation effect, selecting a frequency of 20Hz, and respectively obtaining values of relative aggregation degree corresponding to the current four steps of 50A, 100A, 150A and 200A, wherein the relative aggregation degree is found to be approximately linearly increased along with the increase of the current through data analysis, but the slope of the linearity is increased from 0.00066 to 0.00184, so that the influence of the large current on the relative aggregation degree is larger. The maximum value of the relative aggregation was 30.6% in the 20 th test and the minimum value of the relative aggregation was 11.1% in the 10 th test.
Finally, analyzing the influence of the zinc magnetic liquid surface distance on the slag gathering effect, selecting the corresponding relative aggregation values when the current is 300A and the frequency is 20Hz, and the zinc magnetic liquid surface distance is 125mm, 180mm and 240mm respectively, and finding that the relative aggregation is approximately linearly reduced along with the increase of the zinc magnetic liquid surface distance through data analysis. The maximum value of the relative aggregation was 30.6% in the 20 th test and the minimum value of the relative aggregation was 17.4% in the 27 th test.
That is, the frequency, the current and the zinc magnetic liquid surface distance are all factors influencing the slag accumulation effect.
TABLE 1 test base data sheet
TABLE 1 test base data sheet
| 16 | 200 | 20 | 125 | 0.15 | 666 | 0.1248 | 801 | 20.2 |
| 17 | 200 | 20 | 125 | 0.15 | 666 | 0.1245 | 803 | 20.6 |
| 18 | 200 | 20 | 125 | 0.15 | 666 | 0.1242 | 805 | 21 |
| 19 | 300 | 20 | 125 | 0.15 | 666 | 0.1158 | 863 | 29.6 |
| 20 | 300 | 20 | 125 | 0.15 | 666 | 0.1149 | 870 | 30.6 |
| 21 | 300 | 20 | 125 | 0.15 | 666 | 0.1156 | 865 | 29.8 |
| 22 | 300 | 20 | 180 | 0.075 | 1333 | 0.0593 | 1686 | 26.4 |
| 23 | 300 | 20 | 180 | 0.075 | 1333 | 0.0589 | 1695 | 27.1 |
| 24 | 300 | 20 | 180 | 0.075 | 1333 | 0.0595 | 1679 | 25.9 |
| 25 | 300 | 20 | 240 | 0.15 | 666 | 0.1271 | 787 | 18.1 |
| 26 | 300 | 20 | 240 | 0.15 | 666 | 0.1258 | 795 | 19.3 |
| 27 | 300 | 20 | 240 | 0.15 | 666 | 0.1279 | 782 | 17.4 |
The known influencing factors are frequency, current and zinc magnetic liquid surface distance, comprehensive analysis is carried out, and the fact that when the frequency is 20Hz and the current is 300A, namely when the equipment is in online operation capacity, the zinc magnetic liquid surface distance is 125mm, the polymerization effect of zinc slag is best, the surface slag in a zinc ingot has the characteristic of gathering towards the edge, zinc slag in the middle of the zinc ingot is obviously less, the fluctuation of the zinc liquid surface in the experiment process is within a reasonable range and is not more than 0.5mm, and when the zinc magnetic liquid surface distance exceeds 180mm, the polymerization effect of the zinc slag is not obvious.
In some alternative embodiments, referring to tables 2 and 3, the minimum relative aggregation factor Q f3 is at most 0.0076, which illustrates that the larger the base value of the frequency, the greater the impact on the aggregation effect of the zinc dross, with the same units of frequency increase.
The minimum relative aggregation factor Q f1 is 0.0026 at a minimum, which means that the smaller the base value of the frequency is, the smaller the influence on the aggregation effect of zinc dross is, and the less obvious the aggregation effect is.
The maximum relative aggregation factor Q A3 is 0.1 at the maximum, which means that the larger the base value of the current is, the larger the aggregation effect on zinc dross is.
The maximum relative aggregation factor Q A2 is 0.053 at a minimum, which indicates that the smaller the aggregation effect on zinc dross is, the less obvious the aggregation effect is when the basic value of the current is between 100A and 150A under the condition of the same unit of current increase.
TABLE 2.50A Current rheological frequency slag plot slope correspondence table
| Project | Qf1 | Qf2 | Qf3 |
| Maximum relative degree of aggregation D Relative to each other max | 0.0038 | 0.006 | 0.0058 |
| Minimum relative degree of aggregation D Relative to each other min | 0.0026 | 0.006 | 0.0076 |
| Intermediate relative degree of aggregation D Relative to each other mid | 0.0036 | 0.006 | 0.0062 |
TABLE 3.20Hz frequency-variable current slag-accumulation diagram dangerous segment slope correspondence table
| Project | QA1 | QA2 | QA3 |
| Maximum relative degree of aggregation D Relative to each other max | 0.078 | 0.053 | 0.1 |
| Minimum relative degree of aggregation D Relative to each other min | 0.054 | 0.064 | 0.094 |
| Intermediate relative degree of aggregation D Relative to each other mid | 0.066 | 0.061 | 0.092 |
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
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| JP3308275B2 (en) * | 1995-03-14 | 2002-07-29 | 新日本製鐵株式会社 | Apparatus and method for evaluating metal cleanliness |
| CN111876710B (en) * | 2020-06-30 | 2022-05-31 | 武汉钢铁有限公司 | Control method of zinc dross in hot-dip galvanizing pot |
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