CN113604660A - Dedusting ash micronized recycling process method - Google Patents
Dedusting ash micronized recycling process method Download PDFInfo
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- CN113604660A CN113604660A CN202110685079.6A CN202110685079A CN113604660A CN 113604660 A CN113604660 A CN 113604660A CN 202110685079 A CN202110685079 A CN 202110685079A CN 113604660 A CN113604660 A CN 113604660A
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000010881 fly ash Substances 0.000 claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 claims abstract description 44
- 239000000428 dust Substances 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 38
- 239000002956 ash Substances 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 16
- 235000019738 Limestone Nutrition 0.000 claims description 15
- 239000006028 limestone Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000009736 wetting Methods 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000012141 concentrate Substances 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000005453 pelletization Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical class 0.000 abstract description 2
- 229910052785 arsenic Inorganic materials 0.000 abstract description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000010802 sludge Substances 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 6
- 235000011941 Tilia x europaea Nutrition 0.000 description 6
- 239000004571 lime Substances 0.000 description 6
- 239000002910 solid waste Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000257159 Musca domestica Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process 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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (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)
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Abstract
The invention relates to the technical field of iron making and raw material processing, in particular to a recycling process method for micronizing dust, which effectively controls the component fluctuation of iron-containing dust through a uniform premixing measure and greatly improves the stability of sinter quality; the dust removal ash is extremely fine in particle size fraction, directly participates in the blending of the sintering ore, can seriously affect the air permeability of a material layer, and has great influence on the yield and the quality of the sintering ore; the fly ash is micronized and then participates in sintering and batching, can replace part of iron powder ore to a certain extent to play a core role in pelletizing, and is beneficial to optimizing a batching structure; the sintering process has certain removal effect on harmful elements in the raw materials, particularly on harmful elements such as alkali metal, zinc metal, sulfur, arsenic and the like in the fly ash; the invention has simple operation, relatively low cost and great popularization value.
Description
Technical Field
The invention relates to the technical field of ironmaking and raw material processing, in particular to a process method for recycling dust pelletizing.
Background
In the production process of iron and steel enterprises, production processes such as ore dressing, sintering, iron making, steel rolling and the like are required, and various processes can generate different industrial solid wastes including sintering dust, blast furnace gas ash, cast house dust, converter sludge, gas sludge and the like. The production of solid wastes varies according to different process equipment of each iron and steel enterprise, but the solid wastes contain useful components such as iron, carbon, calcium oxide, magnesium oxide and the like, so that the solid wastes are important secondary resources in the iron and steel enterprises. However, because of large fluctuation of components and physical properties, the whole process is still difficult to recycle, and a considerable part of the process is still in an outward discharge accumulation state, thereby not only polluting the environment, but also wasting resources.
In the prior art, most enterprises adopt a sintering or pelletizing batching system to recycle the fly ash by adopting a recycling mode of the fly ash. The recovery process is simple and convenient to operate, the production cost is low, but the influence on the sintering process is various from the aspect of long-term operation tracking: firstly, the dedusting ash has large quantity and various types, and the components are unstable, so that the fluctuation of the components of the sinter is large, and the quality is unstable; secondly, the dedusting ash is subjected to a high-temperature roasting process, so that the hydrophobicity is strong, the particle size is small, the mixture is difficult to granulate when the dedusting ash is directly added, the air permeability of a sinter layer is easy to deteriorate, and the sintering production capacity is reduced.
Disclosure of Invention
The invention aims to provide a process method for recycling micronized fly ash, which is simple and convenient to operate, low in cost and high in popularization value.
In order to solve the technical problem, the invention provides a process method for recycling micronized fly ash, which comprises the following steps:
s1, uniformly mixing and pretreating iron-containing dust to form mixed fly ash, wherein the mixed fly ash comprises sintered fly ash, blast furnace gas ash, tapping field fly ash, converter mud and gas mud, and the mass proportion of the sintered fly ash, the blast furnace gas ash, the tapping field fly ash, the converter mud and the gas mud is 3:3:2:1: 1;
s2, adding steel slag particles and limestone powder into the mixed dedusting ash prepared in the step S1 to serve as a binder, wherein the mass ratio of the limestone powder is 2-3.5%, and the mass ratio of the steel slag particles is less than or equal to 8%;
s3, adding 6-8% of water by mass into the mixture obtained in the step S2 for wetting, and carrying out micronization treatment through a disc pelletizer after wetting to form dedusting ash particles with the diameter of 2-6 mm;
s4, drying the fly ash particles after the step S3, introducing waste gas at the temperature of 80-120 ℃ into a drying bed for drying, wherein the water content of the dried fly ash particles is 2%;
s5, blending and mixing the dedusting ash particles after the step S4 with iron ore concentrate, return ores, a fusing agent and fuel, wherein the mass ratio of the iron ore concentrate to the return ores to the dedusting ash particles to the fusing agent to the fuel is 68:5:3:19: 5;
s6, wetting the mixture subjected to the step S5 by adding water, uniformly mixing and granulating, distributing the mixture on a sintering trolley, and performing ignition, air draft and sintering processes to form the sinter meeting the requirement of the blast furnace.
Further, the iron-containing dust mixing pretreatment in the step S1 realizes mixing by the storage bin according to the novel proportion in the step S1.
Further, in the iron-containing dust mixing pretreatment of step S1, the mixing is realized by flattening the cross section layer by layer and cutting.
Further, in step S2, the mass ratio of the mixed fly ash, the steel slag particles and the limestone powder is 92:5: 3.
Further, the particle size of the quicklime in the step S2 is 150 meshes.
Iron-containing dust such as sintering dust, blast furnace gas dust, cast house dust, converter sludge, gas sludge and the like can be generated in the production process of steel enterprises. Since the iron-containing dust has a large composition difference and the direct recycling of the iron-containing dust has a large influence on the sintering production, the mixed dust with relatively stable quality is formed through the step S1.
The types of the binders are various, such as bentonite, lime powder, cement and the like, and finished binders with special formulas are also available in the market. The invention selects 2-3.5% of lime powder, and the mass ratio of the lime powder is less than or equal to 8%, mainly considering improving the iron grade and reducing the solvent consumption of the sinter.
The moisture content of the dried fly ash particles is 2%, otherwise the ingredients are influenced because the strength of the fly ash particles is too low.
The invention has the beneficial effects that:
1. the fluctuation of the components of the iron-containing dust is effectively controlled by a pre-mixing measure, and the stability of the quality of the sinter is greatly improved;
2. the dust removal ash is extremely fine in particle size fraction, directly participates in the blending of the sintering ore, can seriously affect the air permeability of a material layer, and has great influence on the yield and the quality of the sintering ore;
3. the fly ash is micronized and then participates in sintering and batching, can replace part of iron powder ore to a certain extent to play a core role in pelletizing, and is beneficial to optimizing a batching structure;
4. the sintering process has certain removal effect on harmful elements in the raw materials, particularly on harmful elements such as alkali metal, zinc metal, sulfur, arsenic and the like in the fly ash;
5. the invention has simple operation, relatively low cost and great popularization value.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
As shown in figure 1, the process method for recycling micronized fly ash comprises the following steps:
s1, uniformly mixing and pretreating iron-containing dust to form mixed fly ash, wherein the mixed fly ash comprises sintered fly ash, blast furnace gas ash, tapping field fly ash, converter mud and gas mud, and the mass proportion of the sintered fly ash, the blast furnace gas ash, the tapping field fly ash, the converter mud and the gas mud is 3:3:2:1: 1;
s2, adding steel slag particles and limestone powder into the mixed dedusting ash prepared in the step S1 to serve as a binder, wherein the mass ratio of the limestone powder is 2% -3.5%, and the mass ratio of the steel slag particles is less than or equal to 8%;
s3, adding 6-8% of water by mass into the mixture obtained in the step S2 for wetting, and carrying out micronization treatment through a disc pelletizer after wetting to form dedusting ash particles with the diameter of 2-6 mm;
s4, drying the dedusting ash particles after the step S3, and introducing the waste gas at the temperature of 80-120 ℃ into a drying bed for drying. The water content of the dried dedusting ash particles is 2 percent;
s5, mixing the dust removal ash particles after the step S4 with iron ore concentrate, return ores, a fusing agent and fuel, wherein the ratio of the iron ore concentrate to the return ores to the dust removal ash particles to the fusing agent to the fuel is 68:5:3:19: 5;
s6, wetting the mixture subjected to the step S5 by adding water, uniformly mixing and granulating, distributing the mixture on a sintering trolley, and performing ignition, air draft and sintering processes to form the sinter meeting the requirement of the blast furnace. The processes of adding water for wetting, mixing and granulating, igniting, exhausting and sintering are process methods frequently used in the field and are not repeated.
Further, the iron-containing dust mixing pretreatment in the step S1 realizes mixing by the storage bin according to the novel proportion in the step S1.
Further, in the iron-containing dust mixing pretreatment of step S1, the mixing is realized by flattening the cross section layer by layer and cutting.
Further, in step S2, the mass ratio of the mixed fly ash, the steel slag particles and the limestone powder is 92:5: 3.
Further, the particle size of the quicklime in the step S2 is 150 meshes.
Iron-containing dust such as sintering dust, blast furnace gas dust, cast house dust, converter sludge, gas sludge and the like can be generated in the production process of steel enterprises. Since the iron-containing dust has a large composition difference and the direct recycling of the iron-containing dust has a large influence on the sintering production, the mixed dust with relatively stable quality is formed through the step S1.
The types of the binders are various, such as bentonite, lime powder, cement and the like, and finished binders with special formulas are also available in the market. The invention selects 2-3.5% of lime powder, and the mass ratio of the lime powder is less than or equal to 8%, mainly considering improving the iron grade and reducing the solvent consumption of the sinter.
The moisture content of the dried fly ash particles is 2%, otherwise the ingredients are influenced because the strength of the fly ash particles is too low.
The existing ironmaking capacity of a certain iron and steel enterprise is 630 ten thousand tons, and the steelmaking capacity exceeds 700 ten thousand tons, in the iron and steel enterprise, a large amount of iron-containing dust is generated every year, only part of the dust is recycled at the present time, and the overstocked inventory once reaches 47 ten thousand tons.
In the steel enterprise, the process of the present invention is used to recycle the fly ash, and the components of iron-containing dust such as sintering fly ash, blast furnace gas ash, cast house fly ash, converter sludge, and gas sludge are shown in table 1 before S1 is not performed.
Table 1: iron dust-containing components produced in the production process of certain iron and steel enterprises.
In order to eliminate the interference of the fluctuation of the components of the iron-containing dust on production, the mixed fly ash with relatively stable quality is formed by uniformly mixing and preprocessing the components of the iron-containing dust in the fly ash small stock yard according to the proportion of the step S1, and the table 2 shows the components of the mixed fly ash after the uniformly mixing and preprocessing of the iron-containing dust in the step S1.
Table 2: and mixing the components of the fly ash after uniform mixing pretreatment.
Compared with bentonite, the limestone powder has the characteristics of good hydrophilicity and the like, and has the advantages of rich resources, low cost and the like, so that the limestone powder is selected as the binder, and the granularity is controlled according to 150 meshes. Considering that the steel slag contains beneficial components such as Fe, CaO, MgO and the like, particularly, steel slag particles can play a pelletizing core role in the dust removal ash micronization process, and the solvent consumption can be reduced by properly adding a part of the steel slag particles. However, the addition of steel slag also causes the P content of the sinter to rise, and when the P removing capability of steel making is limited, the proportion is properly controlled, so the mixed fly ash, steel slag particles and limestone powder are mixed according to the invention with the mass ratio of 92:5:3, and the table 3 shows the components of the limestone powder and the steel slag.
Table 3: is the components of limestone powder and steel slag.
The types of the dedusting ash are relatively more, and the requirement of the micronization treatment process matched with the binder on the raw materials is relatively wide, so that the dedusting ash generated in the smelting engineering of iron and steel enterprises is basically suitable for the micronization recycling process of the iron-containing dedusting ash based on a sintering machine, namely, the dedusting ash particles with certain strength are formed and participate in the normal proportioning of the sintering ore after the processes of uniformly mixing, micronizing and the like of various iron-containing dedusting ash. As shown in Table 4, by using the process method of the invention, the iron grade of the sinter is improved by 0.35 percentage point, the solvent is reduced by 10.26kg/t, and the fuel consumption is reduced by 0.62 kg/t. The annual output of the sintered ore is calculated according to 660 ten thousand tons, the amount of the recovered iron metal is 2.31 ten thousand tons, namely 2.45 ten thousand tons of iron output is increased, 6.67 ten thousand tons of limestone solvent is saved, 0.41 ten thousand tons of fuel is saved, and more than 2800 ten thousand yuan of effect is created all the year round. Meanwhile, compared with solid wastes, the harmful elements are reduced, and the quality stability of sintered minerals is improved.
Table 4: the prior art and the process method of the invention are compared with the table.
Practice proves that the process method is simple and convenient to operate, relatively low in cost, beneficial to enterprises to recover secondary resources, and capable of creating greater economic benefits and environmental protection values, has great guiding significance for production practice of metallurgical enterprises, and has great popularization value.
Claims (5)
1. A process method for recycling micronized fly ash is characterized by comprising the following steps: the method comprises the following steps:
s1, uniformly mixing and pretreating iron-containing dust to form mixed fly ash, wherein the mixed fly ash comprises sintered fly ash, blast furnace gas ash, tapping field fly ash, converter mud and gas mud, and the mass proportion of the sintered fly ash, the blast furnace gas ash, the tapping field fly ash, the converter mud and the gas mud is 3:3:2:1: 1;
s2, adding steel slag particles and limestone powder into the mixed dedusting ash prepared in the step S1 to serve as a binder, wherein the mass ratio of the limestone powder is 2% -3.5%, and the mass ratio of the steel slag particles is less than or equal to 8%;
s3, adding 6-8% of water by mass into the mixture obtained in the step S2 for wetting, and carrying out micronization treatment through a disc pelletizer after wetting to form dedusting ash particles with the diameter of 2-6 mm;
s4, drying the dedusting ash particles after the step S3 is finished, and introducing the waste gas at the temperature of 80-120 ℃ into a drying bed for drying; the water content of the dried dedusting ash particles is 2 percent;
s5, blending and mixing the dedusting ash particles after the step S4 with iron ore concentrate, return ores, a fusing agent and fuel, wherein the mass ratio of the iron ore concentrate to the return ores to the dedusting ash particles to the fusing agent to the fuel is 68:5:3:19: 5;
s6, wetting the mixture subjected to the step S5 by adding water, uniformly mixing and granulating, distributing the mixture on a sintering trolley, and performing ignition, air draft and sintering processes to form the sinter meeting the requirement of the blast furnace.
2. The process method for recycling micronized fly ash according to claim 1, wherein the process method comprises the following steps: and step S1, uniformly mixing the iron-containing dust and ash through the storage bin according to the proportion of the step S1.
3. The process method for recycling micronized fly ash according to claim 1, wherein the process method comprises the following steps: and step S1, the iron-containing dust mixing pretreatment is to flatten the section layer by layer and cut the section to realize mixing.
4. The process method for recycling micronized fly ash according to claim 1, wherein the process method comprises the following steps: in step S2, the mass ratio of the mixed fly ash to the steel slag particles to the limestone powder is 92:5: 3.
5. The process method for recycling micronized fly ash according to claim 1, wherein the process method comprises the following steps: the quicklime in step S2 has a particle size of 150 mesh.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737053A (en) * | 2022-01-18 | 2022-07-12 | 酒泉钢铁(集团)有限责任公司 | Sintering method based on dust removal ash particle bottoming |
| CN115058592A (en) * | 2022-07-04 | 2022-09-16 | 山东莱钢永锋钢铁有限公司 | Method for mixing and preparing multiple types of dedusting ash in ferrous metallurgy and returning to sintering |
| CN115679097A (en) * | 2022-11-19 | 2023-02-03 | 新源县渣宝环保技术有限公司 | Method for recycling iron-making gas ash by using converter slag and refined dedusting ash |
| CN115716738A (en) * | 2022-12-09 | 2023-02-28 | 新源县渣宝环保技术有限公司 | Production process of high-strength steel slag brick |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290731A (en) * | 2000-09-22 | 2001-04-11 | 北京金发工贸公司 | Adhesive for pelletizing and its producing method |
| CN101649390A (en) * | 2009-09-15 | 2010-02-17 | 山西太钢不锈钢股份有限公司 | Method for ultra-fine refined flour sintering for large-scale sintering machine |
| CN107557572A (en) * | 2017-08-25 | 2018-01-09 | 包头钢铁（集团）有限责任公司 | A kind of preparation method of sintering deposit |
| CN110273067A (en) * | 2019-07-25 | 2019-09-24 | 武汉钢铁有限公司 | A method of sintering utilizes dedusting ash |
| CN111910072A (en) * | 2020-09-09 | 2020-11-10 | 鞍钢股份有限公司 | Preparation and use methods of pre-reduced fluxed pellets with steel slag as partial raw material |
| CN112941310A (en) * | 2021-01-26 | 2021-06-11 | 山西太钢不锈钢股份有限公司 | Method for improving quality stability of mixed iron material for sintering |
-
2021
- 2021-06-21 CN CN202110685079.6A patent/CN113604660A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290731A (en) * | 2000-09-22 | 2001-04-11 | 北京金发工贸公司 | Adhesive for pelletizing and its producing method |
| CN101649390A (en) * | 2009-09-15 | 2010-02-17 | 山西太钢不锈钢股份有限公司 | Method for ultra-fine refined flour sintering for large-scale sintering machine |
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