CN115058590A - Automatic adjustment method for granulation target moisture of sintering mixture - Google Patents
Automatic adjustment method for granulation target moisture of sintering mixture Download PDFInfo
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- CN115058590A CN115058590A CN202210721925.XA CN202210721925A CN115058590A CN 115058590 A CN115058590 A CN 115058590A CN 202210721925 A CN202210721925 A CN 202210721925A CN 115058590 A CN115058590 A CN 115058590A
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- 239000000203 mixture Substances 0.000 title claims abstract description 27
- 238000005245 sintering Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005469 granulation Methods 0.000 title claims description 10
- 230000003179 granulation Effects 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000002352 surface water Substances 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to an automatic regulation method of target moisture of granulating of a sintering mixture, which comprises the steps of firstly setting a target moisture set value standard, secondly regulating the target moisture of granulating once every 10min according to the relation between the surface water of a detected granulated material and the whole water of the material for 30s of an average value, and further limiting a regulation mode when the absolute value of a difference value is greater than or less than 0.025, and further limiting a regulation mode when the ratio is less than the average value, so that the granulating effect and the process stability of the sintering mixture can be further improved, and the improvement of a series of technical and economic indexes such as the production quality of a sintering process is promoted.
Description
Technical Field
The invention relates to the technical field of sintering machines, in particular to an automatic adjustment method for target moisture of granulation of a sintering mixture.
Background
At present, the closed-loop control mode for fixing target moisture is generally adopted for the water adding control of the granulating of the sintering mixture in the industry, the control mode cannot automatically adapt to the quality of raw and auxiliary materials in the granulating process of the mixture, the target moisture change caused by the change of different structural proportions needs manual auxiliary observation, the target moisture adjustment is manually carried out, the automatic water adding control of the granulating of the sintering mixture in the true sense cannot be realized, a sintering production line with large quality fluctuation and frequent change of the raw and auxiliary materials is produced, and the automatic water adding system of the granulating of the sintering mixture in the current mode even cannot realize automatic control.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the automatic adjustment method for the granulating target moisture of the sintering mixture, which can improve the granulating effect and the process stability of the sintering mixture and promote the production quality of the sintering process to be improved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the automatic adjustment method of the granulation target moisture of the sintering mixture comprises the following steps:
the method comprises the following steps:
(1) a water measuring device of an automatic sintering mixture water adding system is installed, the sintering mixture is manually granulated and adjusted to an ideal state, and a target water set value in the state is taken as a reference W b ；
(2) Calculate water measuring equipment automated inspection's material surface water W after pelletization s Water W as a whole wh 10min average value ratio k 0 ；
(3) Setting the granulation target moisture to W s-10min /W wh-10min And k is 0 Automatically adjusting every 10 min:
when W s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference is less than 0.025, the target moisture is kept unchanged;
when W is s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference of (a) is greater than 0.025, W is compared s-10min /W wh-10min Ratio of (a) to k 0 When W is s-10min /W wh-10min Is less than k 0 At every 0.025 point lower, the target water content W r Increase by 0.2%, when W s-10min /W wh-10min Is greater than k 0 At each 0.025 point higher, the target water content W r The reduction is 0.2%.
Preferably, in the step (1), the mixture is sintered, the mixture is granulated, water is added into the mixture in a primary mixing barrel and a secondary mixing barrel, and the water content is detected outside the mixing barrels.
Preferably, the average value of the measured moisture 30s is compared with the set target moisture, the water adding flow rate is kept unchanged when the absolute value of the measured moisture minus the set target moisture is within 0.2%, the segmented control is adopted when the absolute value of the measured moisture minus the set target moisture is out of the range of 0.2%, when the measured moisture is greater than the set moisture, the measured moisture minus the target moisture is reduced by 0.2% for one step and 0.25t for each step, and when the measured moisture is less than the set moisture, the measured moisture minus the measured moisture is reduced by 0.2% for one step and 0.25t for each step is added.
Compared with the prior art, the scheme has the remarkable advantages that: the granulation effect and the process stability of the sintering mixture can be further improved, and the improvement of a series of technical and economic indexes such as the production quality of the sintering process is promoted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of the method steps of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.
As shown in fig. 1, the method for automatically adjusting the target moisture for granulating the sinter mixture comprises the following steps:
(1) a water measuring device of an automatic water adding system for sintering mixture is installed, the sintering mixture is manually granulated and adjusted to an ideal state, and a target water set value in the state is taken as a reference W b Wherein, the mixture sintering and the granulation are added with water in a primary mixing barrel and a secondary mixing barrel, and the water content is detected outside the mixing barrels;
(2) calculate water measuring equipment automated inspection's material surface water W after pelletization s Water W as a whole wh 10min average value ratio k 0 ；
(3) Setting the granulation target moisture to W s-10min /W wh-10min And k is 0 Automatically adjusting every 10 min:
when W is s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference is less than 0.025, the target moisture is kept unchanged;
when W is s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference of (a) is greater than 0.025, W is compared s-10min /W wh-10min Ratio of (a) to k 0 When W is s-10min /W wh-10min Is less than k 0 At every 0.025 point lower, the target water content W r Increase by 0.2%, when W s-10min /W wh-10min Is greater than k 0 At each 0.025 point higher, the target water content W r The reduction is 0.2%.
In addition, the following measures are generally adopted in the industry at present, a vector algorithm is adopted from various material batching scales to a mixing barrel, the water adding amount is controlled by adopting a feed-forward coefficient of weight change of material batching, the water adding amount is adjusted and controlled according to the feeding and discharging period in the mixing barrel from a water adding point of the mixing barrel to a material moisture detecting point, and the problem that the control from the water adding point of the mixing barrel to the material moisture detecting point is lagged cannot be effectively solved by the method.
Therefore, in the scheme, the average value of the measured moisture 30s is compared with the set target moisture, when the absolute value of the measured moisture minus the set target moisture is within 0.2%, the water adding flow rate is kept unchanged, when the absolute value of the measured moisture minus the set target moisture is beyond the range of 0.2%, the segmented control is adopted, when the measured moisture is greater than the set moisture, the measured moisture minus the target moisture is divided into 0.2% for one step and each step is reduced by 0.25t, when the measured moisture is less than the set moisture, the measured moisture minus the measured moisture is divided into 0.2% for one step and each step is added with 0.25 t.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A method for automatically adjusting the granulation target moisture of a sintering mixture is characterized by comprising the following steps:
(1) a water measuring device of an automatic water adding system for sintering mixture is installed, the sintering mixture is manually granulated and adjusted to an ideal state, and a target water set value in the state is taken as a reference W b ；
(2) Calculate water measuring equipment automated inspection's material surface water W after pelletization s Water W as a whole wh 10min average value ratio k 0 ；
(3) Setting the granulation target moisture to W s-10min /W wh-10min And k is 0 Every 10min, automatically adjusting:
when W is s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference is less than 0.025, the target moisture is kept unchanged;
when W is s-10min /W wh-10min Ratio of (a) to k 0 When the absolute value of the difference of (a) is greater than 0.025, W is compared s-10min /W wh-10min Ratio of (a) to k 0 When W is s-10min /W wh-10min Is less than k 0 At every 0.025 point lower, the target water content W r Increase by 0.2%, when W s-10min /W wh-10min Is greater than k 0 At each 0.025 point higher, the target water content W r The reduction is 0.2%.
2. The method for automatically adjusting the target moisture content of the granulating process of the sinter mixture as claimed in claim 1, wherein in the step (1), the sinter mixture and the granulating water are added into the primary and secondary mixing barrels, and the moisture content is detected outside the mixing barrels.
3. The method of claim 1, wherein the average value of the measured moisture of 30s is compared with the set target moisture, the flow rate of water is maintained when the absolute value of the measured moisture minus the set target moisture is within 0.2%, the control is performed in stages when the absolute value of the measured moisture minus the set target moisture is out of 0.2%, the measured moisture minus the target moisture is reduced by 0.2% for one stage and 0.25t for each stage when the absolute value of the measured moisture minus the set target moisture is greater than the set moisture, and the measured moisture minus the measured moisture is reduced by 0.2% for one stage and 0.25t for each stage when the absolute value of the measured moisture is less than the set moisture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210721925.XA CN115058590A (en) | 2022-06-24 | 2022-06-24 | Automatic adjustment method for granulation target moisture of sintering mixture |
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| CN202210721925.XA CN115058590A (en) | 2022-06-24 | 2022-06-24 | Automatic adjustment method for granulation target moisture of sintering mixture |
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| CN115058590A true CN115058590A (en) | 2022-09-16 |
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| CN202210721925.XA Pending CN115058590A (en) | 2022-06-24 | 2022-06-24 | Automatic adjustment method for granulation target moisture of sintering mixture |
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- 2022-06-24 CN CN202210721925.XA patent/CN115058590A/en active Pending
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Application publication date: 20220916 |