CN112159124B - Method for strengthening quicklime digestion process in sintering production process - Google Patents
Method for strengthening quicklime digestion process in sintering production process Download PDFInfo
- Publication number
- CN112159124B CN112159124B CN202011153371.5A CN202011153371A CN112159124B CN 112159124 B CN112159124 B CN 112159124B CN 202011153371 A CN202011153371 A CN 202011153371A CN 112159124 B CN112159124 B CN 112159124B
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- CN
- China
- Prior art keywords
- spray head
- water
- quicklime
- mixed material
- production process
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
- C04B2/08—Devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention relates to a method for strengthening the quicklime digestion process in the sintering production process, which comprises the steps of adding water to moisten a mixed material containing quicklime at a position close to an inlet of a cavity; spraying water into the cavity by using a spray head; adjusting the angle of the spray head, and spraying water to the position of small particles formed by the mixed material by the spray head; adjusting the flow rate and water pressure of water sprayed by the spray head to finally increase the digestion time of the mixed material; the invention can realize the obvious improvement of the material accumulation phenomenon only by changing the water adding mode.
Description
Technical Field
The invention relates to a method for strengthening a quicklime digestion process in a sintering production process, belonging to the field of quicklime digestion in a sintering plant.
Background
In production, after high-quality white lime powder of a rotary kiln or other shaft kilns is used (large blocks are used in a steel-making process, and small blocks are used in a sintering process), the better the quality of quicklime (the higher the activity index of the quicklime) is, the lower the service efficiency of a digester is, the quicklime is mainly shown to be easy to expand in a bin, and a spray head in the digester is also easy to block. The quality of the quicklime is poor (the activity index is low), the use efficiency of the digester is high, and the quicklime is not easy to expand and store, and a spray head in the digester is not easy to block. For example, the invention with application number 201310290301.8 provides a method for producing sintered ore by using quick lime, which can use quick lime slaker to make the effect of the high-quality quick lime to be maximum while using the high-quality quick lime, so as to improve the granulation effect of the sintered mixture. The method comprises the steps of proportioning, mixing, granulating, distributing and producing sintered ore, wherein in the mixing process, finely ground dolomite and coke powder are added into quick lime and then are digested by a digester, so that the aim of efficiently utilizing high-quality quick lime is fulfilled; however, in the production process of a sintering plant, because the alkalinity of sintered ores fluctuates obviously, in the sintering production process, the digestion time of quicklime is short, the temperature fluctuation of the mixture is large, the mixture is not mixed uniformly, the belt is directly stuck, and the cleaning labor intensity is increased, so that the potential safety hazard exists in the accumulated material.
Disclosure of Invention
The invention provides a method for strengthening the quicklime digestion process in the sintering production process, which can obviously improve the material accumulation phenomenon only by changing the water adding mode.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a method for strengthening the quicklime digestion process in the sintering production process specifically comprises the following steps:
firstly, adding water to wet a mixed material containing quicklime at a position close to an inlet of a cavity;
secondly, spraying water into the cavity by using a spray head;
thirdly, adjusting the angle of a spray head, and spraying water to the position of small particles formed by the spray head facing the mixed material;
fourthly, adjusting the flow rate and the water pressure of the water sprayed by the spray head to finally increase the digestion time of the mixed material;
as a further preference of the invention, the mixed material is moistened by adding water at a position which is five meters close to the inlet of the chamber;
as a further preferable mode of the present invention, in the third step, the spraying angle of the spraying head is 45 degrees with respect to the ground;
as a further preferred aspect of the present invention, the flow rate of the water sprayed from the spray head is in the range of 12m3/h-19 m3H, water pressure of the nozzleIs 0.5 MPa.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the invention mainly aims at the phenomenon that the alkalinity of the sintering ore fluctuates obviously in the production process of a sintering plant, and can increase the digestion time of the quicklime only by changing the water adding mode, thereby achieving the purpose of enhancing the stability of the material temperature and obviously improving the accumulated material;
2. the invention is wetted by adding water at the entrance, which can avoid the agglomeration of quicklime and small particles;
3. the water adding mode is changed from straight pipe water flow to mist water vapor, and the effect of wetting the granules of the quicklime is better.
Detailed Description
The sintering plant easily appears the obvious problem of agglomerate alkalinity fluctuation in the production process, can lead to the poor and agglomerate return fines of agglomerate alkalinity stability ratio to increase, and the reason that leads to this result is exactly that quick lime digestion time is short in the sintering process, and the mixture temperature fluctuation is big, therefore under the prerequisite that does not increase manufacturing cost, this application has made the improvement on technology, and the concrete method is as follows:
firstly, adding water to wet a mixed material containing quicklime at a position which is five meters away from an inlet of a cavity, so that the quicklime and small particles are prevented from being agglomerated in a large quantity, and the uniform mixing effect is poor;
secondly, spraying water into the cavity by using a spray head, wherein the spray head sprays mist water which replaces straight pipe water flow, the mist water dispersion degree is better, and the particle wetting effect is better;
thirdly, adjusting the angle of a spray head, wherein the spray angle of the spray head forms an angle of 45 degrees with the ground, and spraying water to the position of small particles formed by the mixed material by the spray head, so that the moisture is beaten on the raised small particles as much as possible and is sprayed to the place with more content of quicklime rather than the place with more large particles, and the adhesion among the large particles is avoided;
fourthly, adjusting the flow speed and the water pressure of the water sprayed by the spray head, wherein the flow range of the water sprayed by the spray head is 12m3/h-19 m3And h, the water pressure of the spray head is 0.5Mpa, so that the mixing effect of the mineral powder and the wetting effect of the added water are optimally configured, and the digestion time of the mixed material is finally increased.
Through the change of the water adding mode, repeated tests and measurement can be carried out, the quicklime digestion time can be prolonged, the stability of the material temperature is enhanced, and the material accumulation is improved obviously finally.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. A method for strengthening the quicklime digestion process in the sintering production process is characterized in that: the method specifically comprises the following steps:
firstly, adding water to wet a mixed material containing quicklime at a position close to an inlet of a cavity;
secondly, spraying water into the cavity by using a spray head, wherein the spray head sprays atomized water;
thirdly, adjusting the angle of a spray head, and spraying water to the position of small particles formed by the spray head facing the mixed material; the spraying angle of the spray head forms an angle of 45 degrees with the ground;
fourthly, adjusting the flow speed and the water pressure of the water sprayed by the spray head, wherein the flow range of the water sprayed by the spray head is 12m3/h-19m3The water pressure of the spray head is 0.5Mpa, and the digestion time of the mixed material is finally increased.
2. The method for intensifying quicklime digestion process in sintering production process as claimed in claim 1, wherein: and adding water to wet the mixed material at a position which is five meters close to the inlet of the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153371.5A CN112159124B (en) | 2020-10-26 | 2020-10-26 | Method for strengthening quicklime digestion process in sintering production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153371.5A CN112159124B (en) | 2020-10-26 | 2020-10-26 | Method for strengthening quicklime digestion process in sintering production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112159124A CN112159124A (en) | 2021-01-01 |
| CN112159124B true CN112159124B (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011153371.5A Active CN112159124B (en) | 2020-10-26 | 2020-10-26 | Method for strengthening quicklime digestion process in sintering production process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542658Y (en) * | 2002-04-19 | 2003-04-02 | 钢铁研究总院 | Slaking device for sintering burnt lime |
| CN103343219A (en) * | 2013-07-11 | 2013-10-09 | 山西太钢不锈钢股份有限公司 | Method for producing sintered ore by using quick lime |
| CN204022682U (en) * | 2014-06-04 | 2014-12-17 | 朱兴益 | A kind of burnt lime digester of environment-friendly type |
| CN110523308A (en) * | 2018-05-29 | 2019-12-03 | 广东韶钢松山股份有限公司 | A kind of mixed method being sintered raw material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63297251A (en) * | 1987-05-28 | 1988-12-05 | Oumi Kogyo Kk | Production of granular slaked lime |
-
2020
- 2020-10-26 CN CN202011153371.5A patent/CN112159124B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542658Y (en) * | 2002-04-19 | 2003-04-02 | 钢铁研究总院 | Slaking device for sintering burnt lime |
| CN103343219A (en) * | 2013-07-11 | 2013-10-09 | 山西太钢不锈钢股份有限公司 | Method for producing sintered ore by using quick lime |
| CN204022682U (en) * | 2014-06-04 | 2014-12-17 | 朱兴益 | A kind of burnt lime digester of environment-friendly type |
| CN110523308A (en) * | 2018-05-29 | 2019-12-03 | 广东韶钢松山股份有限公司 | A kind of mixed method being sintered raw material |
Non-Patent Citations (1)
| Title |
|---|
| "新钢烧结配料生石灰消化工艺及环保改善实践";聂绍昌等;《江西冶金》;20180228;第38卷(第1期);第14-17页 * |
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| CN112159124A (en) | 2021-01-01 |
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