CN1049684A - The water law of dedusting steel-smelting converter mud is recycled - Google Patents
The water law of dedusting steel-smelting converter mud is recycled Download PDFInfo
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- CN1049684A CN1049684A CN89105349A CN89105349A CN1049684A CN 1049684 A CN1049684 A CN 1049684A CN 89105349 A CN89105349 A CN 89105349A CN 89105349 A CN89105349 A CN 89105349A CN 1049684 A CN1049684 A CN 1049684A
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- converter
- removing sludge
- dust
- sintering
- mud
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- 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
- Y02P10/25—Process efficiency
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Abstract
The water law that the present invention relates to dedusting steel-smelting converter mud is recycled, converter dust-removing sludge moisture 40～70% is as sintered material water, the direct method in the iron making and sintering compound in cylindrical mixer in compounding process, eliminated in the prior art and moisture converter dust-removing sludge about 25% to have been allocated directly as iron-bearing material into batch mixing to occur in the iron making and sintering compound irregular, difficult cleaning, maintenance on the relevant facility, reentrainment of dust is big, worsens drawbacks such as sintering technology and economic indicator.Technology of the present invention is simple, drying-free, and operations such as vacuum filtration are that a kind of high efficiency, investment are low, realize that converter dust-removing sludge fully utilizes eucyclic good scheme.
Description
The water law that the present invention relates to dedusting steel-smelting converter mud is recycled.
Problems such as the dedusting mud that the oxygen converter steelmaking wet method dedusting system produces has become the difficult problem that plant environment is administered, though the method for multiple recycling is arranged at present, has complex treatment process, and reentrainment of dust is serious.The mini-pellets equipment of Japan's development, recyclablely utilize multiple ion dust mud contaning in the iron and steel enterprise, utilize the principle of pelletizing method material rolling balling, through a series of machining processes, make even-grained mini-pellets, for sinter machine usefulness, this method can be handled multiple ion dust mud contaning as iron-bearing material, but need through dirt mud drying, batching, mixing, make multiple working procedures such as ball, screening, reentrainment of dust is big.Panzhihua Iron discloses a kind of through operations such as precipitation, vacuum filtrations, wet converter dust-removing sludge moisture about 25% not drying directly is sent to the method that the sintering plant feed proportioning system is done the sintering iron-bearing material, it is simple to have technology, invest low, advantages such as drying-free.But through using proof: because moisture about 25% wet converter mud, viscosity, plasticity are big, are bonded in easily in the sintering plant use on the relevant facility of sintering, have increased the workload of cleaning, maintenance; Simultaneously, in sintering, be difficult for mixing, the high drawback of sintering ventilation property difference Pulverization ratio occurs.At present, the application of converter dust-removing sludge in the agglomeration operation still is restricted, and influences the environmental improvement of plant area.
The objective of the invention is to exempt big, the weak point in sintered material, being difficult for mixing and being bonded in the relevant facility of sintering easily of reentrainment of dust in the above-mentioned prior art, provide a kind of technology simple, do not worsen the method that the water law of the dedusting steel-smelting converter mud of sintering technology and economic indicator is recycled, realize the benign cycle of plant area's converter dust-removing sludge comprehensive utilization.
The present invention is the method that a kind of water law of dedusting steel-smelting converter mud is recycled, and through operations such as precipitation, filtrations, directly allocates into converter dust-removing sludge in the sintered material; It is characterized in that moisture 40～70% converter dust-removing sludge as sintered material water in compounding process directly in the iron making and sintering compound in cylindrical mixer.
The present invention 40～70% converter dust-removing sludge as sintered material moisture content direct method of recycling of the water law of the dedusting steel-smelting converter mud in the sinter mixture in cylindrical mixer in compounding process; It is characterized in that the optimum moisture content as the converter dust-removing sludge of sintered material water is 45～55%.
Technical process of the present invention is as follows:
Dedusting steel-smelting converter mud is squeezed into one or two group precipitation ponds through sump pump, one, two liang of group precipitation pond alternate cycles are used, long-pending full converter dust-removing sludge is promptly stopped using when bottom, a group precipitation pond wherein, the sewage that prevents to exceed standard is discharged, enable another group precipitation pond, after the sewage in the one group precipitation pond of stopping using with pump handle has been arranged, with mechanical means (as with digging the mud grab bucket) stirring and evenly mixing, with tank car moisture 40～70% converter dust-removing sludge is transported in the converter dust-removing sludge storagetank of sintering plant, on storagetank, be provided with filtering net, stone and other foreign material in the converter dust-removing sludge are brought in elimination into, quantitatively squeeze in the cylindrical mixer of sintering plant with slush pump as sintered material water then converter dust-removing sludge, its amount of squeezing into is a little less than the batching moisture content of sintering process requirement, and the not enough water that partly adds replenishes.
Embodiment:
The present invention will now be further detailed embodiment:
With 3 15 tons of oxygen converter steel factories and 2 36M
2The sintering plant of sinter machine, the water law of implementing dedusting steel-smelting converter mud of the present invention is recycled as example: ton converter dust-removing dewatered sludge surplus 3 annual generations 10000 of 15 tons of oxygen converter steelmakings, the Chemical Composition of converter dust-removing sludge: SiO
24% CaO, 13.60% MgO, 1.73% Al
2O
30.65% Fe
2O
357.55% TFe, 51.6% FeO, 14.61% MnO1.5% S, 0.14% P 0.042%.
By technical process of the present invention, moisture about 50% converter dust-removing sludge as ironmaking knot batching water in compounding process directly in the sintered mix in the tube mixer of garden, ton surplus day consumption moisture 50% the converter dust-removing sludge 400, through using proof, batch mixing is even, does not find that converter dust-removing sludge is bonded on the relevant facility; Original sintering process is constant, and the no abnormal phenomenon of sintering process occurs, and the phenomenon of sintering technology and economic indicator does not take place to worsen, the sintering good permeability, and Pulverization ratio is low, and FeO content reduces by 0.89% agglomerate high temperature metallurgical properties and makes moderate progress remarkable in economical benefits.The direct economic benefit of only recycling steel melting furnace dedusting mud reaches more than 1,000,000 yuan every year, ton surplus the annual water saving 10000, annual saving environmental fines and thin river course take nearly 1,000,000 yuan of spending, realize the benign cycle of dedusting steel-smelting converter comprehensive utilization of mud, obvious social benefit.
The present invention compared with prior art has the following advantages:
The present invention directly mixed with addition of the iron making and sintering in the cylinder mixing machine in compounding process as the sintering ingredient water moisture 40～70 dedusting steel-smelting converter mud in, eliminated in the prior art moisture that to allocate the batch mixing that occurs in the sintering feed at 25% left and right sides converter dust-removing sludge into as iron-bearing material irregular, easily clear up on the relevant facility of bonding, maintenance is difficult, reentrainment of dust is big, worsens the drawbacks such as sintering technology and economic indicator.
2. need not drying, the operations such as vacuum filtration, technology is simple, and equipment investment is few.
3. remarkable in economical benefits is with 3 15 tons of oxygen converter steel factories and 2 36M2It is example that the sintering plant of sintering machine is implemented the present invention, whenever is only the direct economic benefit that reclaims dedusting steel-smelting converter mud and reaches more than 1,000,000 yuan, and the annual ton surplus in the of 10000 of economizing on water is saved environmental fines and thin river course and taken nearly 1,000,000 yuan.
4. plant environment is administered, and the dedusting steel-smelting converter comprehensive utilization of mud is realized benign cycle, and social benefit is remarkable.
Claims (2)
1, the method for a kind of water law of dedusting steel-smelting converter mud recycling through operations such as precipitation, filtrations, is directly allocated converter dust-removing sludge in the iron making and sintering compound; It is characterized in that moisture 40～70% converter dust-removing sludge as sintered material water in compounding process directly in the iron making and sintering compound in cylindrical mixer.
2, according to claim 1 40～70% converter dust-removing sludge as sintered material water direct method of recycling of the water law of the dedusting steel-smelting converter mud in the iron making and sintering compound in cylindrical mixer in compounding process; It is characterized in that the optimum moisture content as the converter dust-removing sludge of sintered material water is 45～55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89105349A CN1016705B (en) | 1989-08-21 | 1989-08-21 | Water recovery process and utilization of sludge in dust removed from steel-smelting converting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89105349A CN1016705B (en) | 1989-08-21 | 1989-08-21 | Water recovery process and utilization of sludge in dust removed from steel-smelting converting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1049684A true CN1049684A (en) | 1991-03-06 |
| CN1016705B CN1016705B (en) | 1992-05-20 |
Family
ID=4856113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89105349A Expired CN1016705B (en) | 1989-08-21 | 1989-08-21 | Water recovery process and utilization of sludge in dust removed from steel-smelting converting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016705B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035728C (en) * | 1993-08-13 | 1997-08-27 | 马鞍山钢铁公司 | Method for producing sintered pellets for steel making from oxygen converter moist dust sludge |
| CN101734776B (en) * | 2009-12-16 | 2011-08-17 | 芜湖新兴铸管有限责任公司 | Method for processing and utilizing wastewater and waste material in steel production and processing system thereof |
| CN107099629A (en) * | 2016-02-21 | 2017-08-29 | 李正福 | A kind of method of dedusting steel-smelting converter sludge and steel plant's solid waste resource recycling |
| CN109762984A (en) * | 2019-01-09 | 2019-05-17 | 北京科技大学 | A kind of processing method being sintered with addition of steel-smelting sewage sludge |
-
1989
- 1989-08-21 CN CN89105349A patent/CN1016705B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035728C (en) * | 1993-08-13 | 1997-08-27 | 马鞍山钢铁公司 | Method for producing sintered pellets for steel making from oxygen converter moist dust sludge |
| CN101734776B (en) * | 2009-12-16 | 2011-08-17 | 芜湖新兴铸管有限责任公司 | Method for processing and utilizing wastewater and waste material in steel production and processing system thereof |
| CN107099629A (en) * | 2016-02-21 | 2017-08-29 | 李正福 | A kind of method of dedusting steel-smelting converter sludge and steel plant's solid waste resource recycling |
| CN109762984A (en) * | 2019-01-09 | 2019-05-17 | 北京科技大学 | A kind of processing method being sintered with addition of steel-smelting sewage sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016705B (en) | 1992-05-20 |
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| CF01 | Termination of patent right due to non-payment of annual fee |