CN101956034B - Blast-furnace ironmaking energy-saving novel process and equipment - Google Patents
Blast-furnace ironmaking energy-saving novel process and equipment Download PDFInfo
- Publication number
- CN101956034B CN101956034B CN2010101497460A CN201010149746A CN101956034B CN 101956034 B CN101956034 B CN 101956034B CN 2010101497460 A CN2010101497460 A CN 2010101497460A CN 201010149746 A CN201010149746 A CN 201010149746A CN 101956034 B CN101956034 B CN 101956034B
- Authority
- CN
- China
- Prior art keywords
- cantilever
- ball
- blast furnace
- blast
- ball press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of smelting and relates to a blast-furnace ironmaking technique, in particular to a blast-furnace ironmaking energy-saving novel process and blast-furnace ironmaking energy-saving cantilever ball press equipment. The blast-furnace ironmaking energy-saving novel process comprises the following steps: mechanical manufacturing, ball making, direct reduction and vacuum cooling, wherein the ball making step is to form mixed iron ore powder into uniform ore powder balls; the formed ore powder balls are transported by a trolley to a direct reduction dryer to be reduced directly; the directly reduced ore powder balls are cooled under vacuum; and the ore powder balls are delivered to a blast furnace for high-temperature melting. In the invention, the drawbacks of the prior blast-furnace ironmaking process flow are overcome effectively, special equipment, namely cantilever ball press, is adopted, and the conventional sintering equipment and process are changed, and thus the blast-furnace ironmaking energy-saving novel process is realized.
Description
Technical field
The invention belongs to the technical field of smelting, be specifically related to a kind of blast furnace technology, particularly a kind of blast furnace iron-making process and equipment thereof-cantilever ball press.
Background technology
At present blast furnace ironmaking accounts for more than 95% of national production, and they all are in the blast furnace that volume size does not wait, accomplish (maximum above 5000m
3, minimum about 125m
3).However, but their production technique and stove in chemical reaction be identical.Nearly 150 years technological improvement, it progressively is improved to one ton of iron of 450～650Kg coke refining of today by one ton of iron of nearly 8000Kg coke refining originally; Simultaneously in the sintering process in former process, progressively be improved to the mechanize sintering of today by open-air sintering originally, development of technology has not only been improved energy-conservation but also has also been solved a series of problem such as environmental protection simultaneously.Yet however, people still hold the illusion that can tap the latent power to the energy-conservation and environmental protection of blast furnace ironmaking, but have in fact proved again, and on present hard coke basis, every decline 10Kg coke all can let the expert feel simply helpless.The several important chemical reactions of blast furnace ironmaking intrinsic are following:
①、Fe
2O
3+CO→Fe
3O
4
②、Fe
3O
4+CO→FeO+CO
2-20.8MJ
③、FeO+C→Fe+CO
2-152.01MJ
④、FeO+CO→Fe+CO
2
Can prove from the above-mentioned several chemical reactions of blast furnace ironmaking intrinsic, realize that again it is impossible falling Jiao significantly, for example, in the combustion zone, air port of blast furnace, oxygen and coke react under combustion conditions and form carbonic acid gas (O
2+ C → CO
2+ 399.44MJ); Discharge the heat of 399.44MJ simultaneously; Account for 80% of blast furnace smelting institute heat requirement; The chemical reaction here is more says the needs that also just help blast furnace ironmaking more in theory, yet the fact proves that but carbonic acid gas (in high temperature of 1300～1100 ℃) in high warm material layer district floating-upward process is reduced fully by coke again and generates carbon monoxide (CO
2+ C → CO-165.6MJ); This process is again an endothermic process; The heat that it is taken away accounts for 35%～40% in the blast furnace; And the too busy to get away carbon monoxide (CO) of many chemical reactions of red stone is made reductive agent in the blast furnace ironmaking shaft, so the many chemical reactions in the blast furnace are process to be again the contradiction process.In addition, in the present blast furnace iron-making process, the insufficient strength of sintered material; The molten timesharing of high temperature disperses easily in blast furnace; Have a strong impact on the permeability of blast furnace, thereby ironmaking quality and energy consumption have been brought disadvantageous effect, made fusion speed and dropleting speed reduce.
Facts have proved that the energy-saving effect that the existing blast furnace iron-making process of present China is realized ideal is unpractical, developed country is also like this, and a large amount of facts have proved, traditional blast furnace iron-making process has been dead end, and a kind of new blast furnace iron-making process will appear in urgent need.
Summary of the invention
The objective of the invention is to provide as carrier a kind of novel process of energy-conservation and environmental protection with existing blast furnace; It is blast furnace iron-making process; A kind of equipment of in this technology, using-cantilever ball press also is provided simultaneously; In order to the breeze ball of preparation five equilibrium, the application of this new installation of the present invention, thus replaced the sintering circuit in the former blast furnace iron-making process.The present invention has effectively overcome the above-mentioned drawback that exists in the existing technical process of blast furnace ironmaking, changes existing agglomerating plant and technology, thereby has realized blast furnace iron-making process.
The technical scheme of blast furnace iron-making process of the present invention is: comprise the machinofacture step, make the ball step, directly reduction step, vacuum cool-down step that the described ball step of making does, adopt the cantilever ball press, the powdered iron ore that dissolves is shaped to five equilibrium breeze ball; Breeze ball after the moulding is transported to direct reduction stoving oven by chassis and directly reduces; The breeze ball that will be somebody's turn to do then after directly reducing carries out vacuum cool-down; Deliver to blast furnace at last and carry out the molten branch of high temperature.
Detailed step of the present invention is following: at first powdered iron ore is carried out batch mixing, stirs, weighed, the powdered iron ore that will be dissolved by the cantilever ball press then is shaped to five equilibrium breeze ball; Breeze ball after the moulding is transported to direct reduction stoving oven by the chassis circulation and directly reduces; The breeze ball that will be somebody's turn to do then after directly reducing carries out vacuum cool-down, and time 10-20 minute, temperature was reduced to below 900 ℃; Last broken, join Jiao and deliver to blast furnace and carry out that high temperature is molten to be divided, carry out follow-up deslagging, tap a blast furnace.
Direct reduction step described in this technology is called disclosed oven dry in " a kind of novel process for ironmaking without blast furnace " for being 200810140107.0 at the applicant's number of patent application, directly realizes in the reduction furnace.
High temperature in the blast furnace described in this technology is molten to be divided into and to be sent to blast furnace with belt and to be equipped with coke etc. and to carry out that high temperature is molten to be divided, and its air blast, oxygen enrichment, coal powder injection, deslagging etc. are still continued to use former blast furnace ironmaking pattern.
So cyclical operation promptly realizes blast furnace iron-making process of the present invention.
The technical scheme of cantilever ball press of the present invention is: a kind of cantilever ball press; It includes, and main shaft reaches and the cantilever of its flexible connection; Cantilever can be around the axis rotation of main shaft; And the round end of cantilever links to each other with phonomoter through gear simultaneously, and said cantilever below is connected with shaping mould through hydraulic push rod, and this shaping mould matches with the bed material storehouse on being fixed on pedestal.
The both sides of hydraulic push rod are provided with the balance push rod on the said shaping mould, and an end of balance push rod is fixedly connected with the parallel steel plate of band division plate.
Said bed material is provided with push pedal moving up and down in the storehouse.
Said push pedal bottom is fixedly connected with expansion link.
Said bed material storehouse top edge is provided with the hydraulic pressure locating clip.
Said cantilever becomes an angle of 90 degrees with main shaft, and cantilever can be around main shaft left rotation and right rotation 180 degree.
Beneficial effect of the present invention is: this blast furnace iron-making process, and adopted and made ball step and directly reduction step and the combination of the two, make agglomerate by original red stone (Fe
2O
3) form exists and to become present naked iron (Fe) form and exist; Grade brings up to 75～82% by original 54～57%; Because of the intensity of naked iron ball is 2 times of former sintered material, the ventilation property of the blast furnace bed of material also improves greatly, and carbonic acid gas resistance in floating-upward process reduces and carbon monoxide saturated; So being reduced into the probability of carbon monoxide significantly reduces; The heat energy utilization rate of coke in blast furnace also just improves greatly, and iron coke per ton ratio descends 40～50% than traditional technology, thereby greenhouse gas emissions also reduce thereupon.
The use of specific equipment of the present invention-cantilever ball press; Improved the intensity of breeze ball molten timesharing of high temperature in blast furnace, significantly strengthened its ventilation property, production efficiency improves; And by making the sintering circuit that the ball step has replaced blast furnace ironmaking; And combine with direct reduction step, four important chemical reactions (description of the scape technology of passing away) of having avoided in the former blast furnace ironmaking process of success comprise two endothermic processes wherein, deduct this four chemical reactions; So just equaled to deduct CO makes reductive agent in the blast furnace stack bed of material effect, and the excess of CO has been protected CO again
2Be reduced to the pressure of CO, make CO
2In high warm material layer floating-upward process, reduced chemical reaction with coke; Also just reduced endothermic process, thereby made the furnace temperature balanced operation, this has not only played energy-conserving action; Smelting speed and output have also been improved simultaneously; Simplified blast furnace burden uneven in temperature, prolonged the life-span of blast furnace, thereby realized energy-conservation.
In addition; Cantilever ball press of the present invention, owing to adopted cantilever structure, said cantilever below is connected with shaping mould through hydraulic push rod; Said pedestal is provided with the bed material storehouse of matching with shaping mould; Make the breeze ball after the moulding after the powdered iron ore balling-up, can shift rapidly, shortened operation and working hour, enhance productivity.The both sides of hydraulic push rod are provided with the balance push rod on the said shaping mould, in the moving process of hydraulic push rod, play guide effect, the safeguard work quality; One end of hydraulic push rod is fixedly connected with the parallel steel plate of band division plate; Division plate can carry out cutting with ball body of powder of iron ore, thereby increases contact area, increases reduction effect; The whole recovery time shortens, and production efficiency improves.Said bed material is provided with push pedal moving up and down in the storehouse, and the push pedal bottom is fixedly connected with expansion link, and the bed material storehouse is docked with the shaping mould of cantilever ball press, both is connected fixing through the linking of hydraulic pressure locating clip.Said cantilever becomes an angle of 90 degrees with main shaft, and cantilever can be around main shaft left rotation and right rotation 180 degree, and it rotates convenient, adjustable-speed.
In a word, technical process of the present invention is reasonable, feasible, and the variation of matter has taken place more traditional blast furnace ironmaking.It had both realized energy-saving and environmental protection, the production problems of blast furnace ironmaking; Realized the molten fact of dividing in the outer reduction furnace of stove again; Also solve simultaneously melting and reducing (directly reduction) and can not form the bottleneck problem that industrialization is produced; And having realized outer reduction of stove and effective combination that blast furnace ironmaking is with historically new significance, has thoroughly negated the saying of its energy-saving and environmental protection dead end of blast furnace ironmaking, and the energy-saving effect of this technology is the 40-50% of traditional blast furnace ironmaking.The breeze ball that the present invention makes is in the blast furnace ironmaking process, and the not only good permeability of the bed of material, and heat energy utilization rate is high, and then energy-saving and emission-reduction, through combining with direct reductive, makes the technology of blast furnace ironmaking that breakthrough development arranged.Cantilever ball press equipment of the present invention, it is rational in infrastructure, simple, and one-time investment is few, and is easy to operate, and output is high, and utilization ratio is high, has formed direct reduction and has combined with the effective of blast furnace ironmaking and ironmaking without blast furnace.In sum, the present invention has possessed outstanding substantive distinguishing features and obvious improvement.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is the structural representation of cantilever ball press of the present invention;
Fig. 3 is the main TV structure synoptic diagram of cantilever ball press of the present invention;
Wherein, 1 is main shaft, and 2 is cantilever, and 3 is hydraulic push rod, and 4 is the balance push rod, and 5 is shaping mould, and 6 is the hydraulic pressure locating clip, and 7 is the bed material storehouse, and 8 is expansion link.
Embodiment
Below in conjunction with embodiment and accompanying drawing technical scheme of the present invention is carried out detailed explanation.
Blast furnace iron-making process of the present invention comprises the machinofacture step, makes the ball step, directly reduction step, vacuum cool-down step that the described ball step of making does; Adopt the cantilever ball press, the powdered iron ore that dissolves is shaped to the breeze ball, can be divided into 42 simultaneously; This breeze ball outward appearance diameter 1000mm, high 200mm (this isodisperse order, and being provided with of size according to concrete needs be provided with flexibly, require relevant with concrete equipment size and output; The present invention does not do qualification); Shift onto on the chassis of circulating direct reduction furnace release with hydraulic pressure again through cantilever 90 degree rotations then, rotate back and forth operation, put 8 on each chassis; Breeze ball after the moulding is transported to direct reduction stoving oven by chassis and directly reduces; The breeze ball that will be somebody's turn to do then after directly reducing carries out vacuum cool-down, and time 10-20 minute, temperature was reduced to below 900 ℃; Last broken, join Jiao and deliver to blast furnace and carry out that high temperature is molten to be divided, carry out follow-up deslagging, tap a blast furnace.
Cantilever ball press of the present invention such as Fig. 2, shown in Figure 3, it includes, and main shaft 1 reaches and the cantilever 2 of its flexible connection, and cantilever 2 can be around the axis rotation of main shaft 1; The two becomes an angle of 90 degrees; And the round end of cantilever 2 links to each other with phonomoter through gear simultaneously, but left rotation and right rotation 180 spend, speed can soon can be slow.Said cantilever 2 belows are connected with shaping mould 5 through hydraulic push rod 3; Be preferably the round mould (its size and shape also can be provided with as required flexibly) of two diameter 1000mm; The parallel steel plate that diameter 1000mm is joined in circle mould upper end can move up and down, its parallel steel plate again with mould in division plate be connected; It moves thrust and is accomplished by hydraulic power; Its main effect is that the breeze pelletizing in two round moulds is shirked on the chassis simultaneously, and its rotation mode resemble construction is used tower crane, and total system is controlled completion by PLC.
What cooperate with shaping mould 5 is fixed on the bed material storehouse 7 on the pedestal; Also be made up of two diameter 1000mm circle moulds, it is fixed on the pedestal parallel with cantilever ball press base with cement concrete, is made up of the push pedal of tape guide in the bed material storehouse 7; Said push pedal bottom is fixedly connected with expansion link 8; It moves up and down by hydraulicefficiency system and drives, and its major function is exactly to dock with two shaping moulds 5 of cantilever ball press, is connected to become whole through hydraulic pressure locating clip 6; And then push breezes in the bed material storehouse 7 to shaping mould 5 by hydraulic ram and be shaped to the breeze ball, form five equilibrium simultaneously, the heavily about 700～1000Kg of each ball, the weight of this breeze ball is also unrestricted.
Claims (8)
1. blast furnace iron-making process comprises the machinofacture step, makes the ball step, directly reduction step, vacuum cool-down step, it is characterized in that, the described ball step of making does, adopts the cantilever ball press, and the powdered iron ore that dissolves is shaped to five equilibrium breeze ball; Breeze ball after the moulding is transported to direct reduction stoving oven by chassis and directly reduces; The breeze ball that will be somebody's turn to do then after directly reducing carries out vacuum cool-down; Deliver to blast furnace at last and carry out the molten branch of high temperature; Described cantilever ball press it include main shaft and with the cantilever of its flexible connection; Cantilever can be around the axis rotation of main shaft; And the round end of cantilever links to each other with phonomoter through gear simultaneously; It is characterized in that: said cantilever below is connected with shaping mould through hydraulic push rod, and this shaping mould matches with the bed material storehouse on being fixed on pedestal.
2. blast furnace iron-making process according to claim 1, its detailed step is following: at first powdered iron ore is carried out batch mixing, stirs, weighed, the powdered iron ore that will be dissolved by the cantilever ball press then is shaped to five equilibrium breeze ball; Breeze ball after the moulding is transported to direct reduction stoving oven by the chassis circulation and directly reduces; The breeze ball that will be somebody's turn to do then after directly reducing carries out vacuum cool-down, and time 10-20 minute, temperature was reduced to below 900 ℃; Last broken, join Jiao and deliver to blast furnace and carry out that high temperature is molten to be divided, carry out follow-up deslagging, tap a blast furnace.
3. cantilever ball press; It includes, and main shaft reaches and the cantilever of its flexible connection; Cantilever can be around the axis rotation of main shaft; And the round end of cantilever links to each other with phonomoter through gear simultaneously, it is characterized in that: said cantilever below is connected with shaping mould through hydraulic push rod, and this shaping mould matches with the bed material storehouse on being fixed on pedestal.
4. cantilever ball press according to claim 3 is characterized in that: the both sides of hydraulic push rod are provided with the balance push rod on the said shaping mould, and an end of balance push rod is fixedly connected with the parallel steel plate of band division plate.
5. cantilever ball press according to claim 3 is characterized in that: said bed material is provided with push pedal moving up and down in the storehouse.
6. cantilever ball press according to claim 5 is characterized in that: said push pedal bottom is fixedly connected with expansion link.
7. cantilever ball press according to claim 6 is characterized in that: said bed material storehouse top edge is provided with the hydraulic pressure locating clip.
8. cantilever ball press according to claim 3 is characterized in that: said cantilever becomes an angle of 90 degrees with main shaft, and cantilever can be around main shaft left rotation and right rotation 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101497460A CN101956034B (en) | 2010-04-19 | 2010-04-19 | Blast-furnace ironmaking energy-saving novel process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101497460A CN101956034B (en) | 2010-04-19 | 2010-04-19 | Blast-furnace ironmaking energy-saving novel process and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101956034A CN101956034A (en) | 2011-01-26 |
| CN101956034B true CN101956034B (en) | 2012-06-20 |
Family
ID=43483619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101497460A Expired - Fee Related CN101956034B (en) | 2010-04-19 | 2010-04-19 | Blast-furnace ironmaking energy-saving novel process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101956034B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188422Y (en) * | 1994-04-14 | 1995-02-01 | 向红跃 | Continuous solid and liquid mixing prilling machine |
| JP5277698B2 (en) * | 2008-04-11 | 2013-08-28 | Ｊｆｅスチール株式会社 | Blast furnace iron making method using low grade iron scrap |
| CN201658965U (en) * | 2010-04-19 | 2010-12-01 | 山东广富集团有限公司 | Cantilever ball pressure machine |
-
2010
- 2010-04-19 CN CN2010101497460A patent/CN101956034B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101956034A (en) | 2011-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113774178B (en) | Production system for coupling European smelting furnace and hydrogen-rich carbon circulating blast furnace | |
| CN102337369B (en) | High-wind-temperature rotational flow injection disturbance melting reduction and prereduction combination device and method | |
| CN104212930B (en) | A kind of BAOSHEREX iron-smelting process of two-step smelting molten iron | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN110438277B (en) | Cyclone flash reduction direct steelmaking system and process | |
| CN201172676Y (en) | Process wind system of drying grate-rotary kiln-circular cooler for producing acid pellet | |
| CN210215430U (en) | Zero-carbon-emission steelmaking equipment | |
| CN107287442A (en) | Continuous copper smelting device and copper smelting method | |
| CN101906501A (en) | Direct steelmaking process by using fine ores, coal and oxygen | |
| CN101671752B (en) | Method for producing directly reduced pellets by adding pore-forming agent and organic binder | |
| CN107119167A (en) | A kind of method of gas base directly reducing iron processes device and quick reduced iron | |
| CN101037713A (en) | Method for directly reducing ferronickel by tunnel kiln using laterite-nickel ore as raw material | |
| CN100507012C (en) | Producing process of directly reducing iron | |
| CN101603110A (en) | With the red soil nickel ore is the method for raw material with shaft kiln directly reduced ferronickel | |
| CN102605132A (en) | Method for producing direct reduction iron by aid of coke oven gas | |
| CN102268502A (en) | Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln | |
| CN204039428U (en) | Gas-based shaft kiln prepares the system of sponge iron | |
| CN201149421Y (en) | Dual purpose shaft furnace reduction apparatus for coal base and gas base | |
| CN106834582A (en) | Hot charging gas-based shaft kiln system and method | |
| CN201658965U (en) | Cantilever ball pressure machine | |
| CN102559986B (en) | Method for single-stage vanadium extraction in same converter | |
| CN202279831U (en) | High blast temperature swirl injection perturbation smelting reduction and pre-reduction integrated device | |
| CN101956034B (en) | Blast-furnace ironmaking energy-saving novel process and equipment | |
| CN102758047A (en) | Process for joint production of total-heat-oxygen blast furnace and shaft furnace | |
| CN109457075A (en) | A kind of coal-based DR process using assisted Reduction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZOUPING XINTE CASTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANDONG GUANGFU GROUP CO., LTD. Effective date: 20140410 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140410 Address after: 256217 Qinglong Industrial Zone, Zouping County, Shandong, Binzhou Patentee after: Zouping Xinte Casting Technology Co., Ltd. Address before: 256217 Qinglong Industrial Zone, Zouping County, Shandong, Binzhou Patentee before: Shandong Guangfu Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20200419 |