CN101177732A - Process and device for improving permeability of sintering material bed - Google Patents
Process and device for improving permeability of sintering material bed Download PDFInfo
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- CN101177732A CN101177732A CNA2006101460671A CN200610146067A CN101177732A CN 101177732 A CN101177732 A CN 101177732A CN A2006101460671 A CNA2006101460671 A CN A2006101460671A CN 200610146067 A CN200610146067 A CN 200610146067A CN 101177732 A CN101177732 A CN 101177732A
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Abstract
The invention pertains to the technical field of sintering and agglomeration of iron ore powder in the ferrous metallurgy industry, which relates to a technology and a device of improving sintering bed permeability. The invention is characterized in that: a rotating roller fixed by a bracket is arranged on a sintering material surface, and a plurality of rows of uniformly distributed forating rods are arranged on the surface of the roller; the surface of the sintering material after being ignited by an igniter forms a layer of melting hard shell, uniformly distributed air holes on the melting hard shell are priked through the forating rods, so as to achieve the aim of improving the sintering bed permeability. In contrast, under the sintering conditions of a deep bed, the yield and the quality of the sintering ores are improved and the energy conservation and consumption reduction are realized. Taking three 64m<2> sintering machines as examples, the utilization coefficient of the sintering machines can be improved by 0.05t/m<2>.h after the device is adopted.
Description
Affiliated technical field:
The present invention relates to the technical field of iron ore powder sintering agglomeration in the ferrous metallurgy industry, specifically belong to a kind of in the down draft sintering process, improve the technology and the device of permeability of sintering material bed.
Technical background:
Along with the development of Iron And Steel Industry, blast-furnace smelting is increasing to the demand of enriched ore, and specification of quality is more and more higher.The method of producing enriched ore at present mainly contains sintering process and pelletizing method, and the enriched ore that sintering process is produced is in agglomerate, and the agglomerate more than 90% all is to adopt belt down draft sintering machine to produce in the world now.The down draft sintering process will be added with particulate fuel exactly, the sintered material of flux is through mixing, granulate, by apparatus for distributing cloth to pallet, chassis is at the uniform velocity mobile to the tail direction by power transmission, lighter for ignition is lighted a fire to charge level, igniting begins exhausting simultaneously, under the chassis fire grate, form certain negative pressure, air then enters following bellows by sinter bed from top to bottom, burning along with bed of material surface fuel, sintering zone moves to the bottom bed of material gradually from last, the sintering process knot that comes to an end when zone of combustion arrives fire grate, sinter cake is through fragmentation, enter blast furnace behind the whole grain.By above-mentioned technology as can be seen, the principal element that influences Dwight-Lloyd sintering machine throughput is bed thickness and sinter machine translational speed, deep-bed sintering process heat energy utilization rate is good, firing rate is few, the FeO content in finished product ore deposit is low, reducing property good, and the quantity of middle grade is many, quantity of return mines is few, yield rate is high, and rising property is relevant thoroughly with the bed of material for the translational speed of sinter machine, so under the deep-bed sintering condition, improving bed permeability is the key of good quality and high output.But when sinter mixture after lighter for ignition igniting, the surface can form the fusion duricrust of the closely knit about 10mm of one deck, degree of porosity is very little, gas is difficult for flowing downward, directly influence bed permeability, so solve the ventilation property of melting layer is a difficult problem, does not also find at present to solve the advanced method of fusion duricrust ventilation property with relevant according to investigating with retrieval.
In order to reduce the resistance of surperficial sintered material fusion duricrust, improve permeability of sintering material bed, the present invention designs a kind of technology and device that improves permeability of sintering material bed.
The technical solution used in the present invention is: dazzling evenly distributedly on the sintering charge level that forms the fusion duricrust after the igniting, the dazzling degree of depth is no more than the sintering ore bed above melting layer duricrust thickness and is advisable, reach gas-pervious purpose by dazzling formation breather hole, improve the ventilation property of sinter bed, improved vertical sintering speed.Arranging of breather hole is well-regulated on the charge level, also can randomly arrange, but should evenly solve bed permeability, and dazzling aperture is 5～140mm, dazzling pitch-row 50～200mm, hole depth 5～100mm.
Above-mentioned technology equipment therefor is achieved in that and is provided with a rotating roller that can rotate freely by the bracing frame fixed on pallet mixing charge level, and the dazzling bar of equally distributed number row is installed on the rotating roller roll surface, and rotating roller does not have additionaling power.When prick into the fusion duricrust on the rotating roller perpendicular to the dazzling bar of charge level after, be with and rotated along with the mobile rotating roller of chassis, pricked into the cycle operation that continues of the front-seat dazzling bar of melting layer.The counterweight of rotating roller must satisfy dazzling bar and can prick into melting layer and be advisable.
The invention has the beneficial effects as follows: the resistance of abolishing chassis surface sintering ore bed fusion duricrust, improve bed permeability, increase the output of agglomerate, the quality of raising agglomerate by relative increase bed thickness and sinter machine speed, reduce solid fuel unit consumption, the purpose of intensified-sintered process thereby reach.And the employing of this project than select more large vol and more the blower fan of high negative pressure improve negative pressure, increasing air quantity and improving output has better economical effectiveness.With 64m
2Sinter machine is an example, adopt this device after, the utilization coefficient of sinter machine has improved 0.05t/m
2.h, annual production improves about 100,000 tons, 4,000,000 yuan of year saving costs.
Description of drawings:
Below in conjunction with accompanying drawing this device is further specified.
Accompanying drawing 1 is the invention process technology and device synoptic diagram.
Among the figure 1, the fusion duricrust of sintering ore bed, 2, lighter for ignition, 3, bracing frame 4, rotating roller, 5, dazzling bar, 6, chassis.
Embodiment
Forming after the igniting on the agglomerate surface of fusion duricrust (1), be provided with the dazzling device of roll-type apart from (2) 1.5 meters of lighter for ignition, go up bundle number row breather hole by dazzling device at fusion duricrust (1), hole depth surpasses fusion crust layer (1) thickness, to improve saturating the rising property of sintering ore bed, reach the order ground that improves output and quality.
This apparatus structure is: stud with equally distributed number row dazzling bar (5) on rotating roller (4) roll surface that can freely rotate by support (3) fixed, rotating roller (4) relies on chassis nature impellent to rotate unpowered.With 64m
2Sinter machine is an example, use former and later two monthly averages according to contrast, after this device is used, prick hole count according to being: when aperture 10mm, pitch of holes 100mm, hole depth 100mm, the sinter machine translational speed is increased to 2.09m/min by 2.07m/min, bed thickness is increased to 500mm by 480mm, vertical sintering speed is increased to 31.25mm/min by 30.00mm/min, the tumbler index in finished product ore deposit is increased to 75.28% by 75.09%, screening index drops to 6.83% by 6.90%, FeO drops to 7.31% by 7.40%, and the middle granularity in finished product ore deposit obviously increases.The utilization coefficient of sinter machine is by 1.979t/m
2.h be increased to 2.031t/m
2.h, deduct other influence factor (raising of material temperature, the adjustment of raw material mix, water carbon stable etc.), this equipment is installed the back productivity of sintering machine is minimum and can improve 0.05t/m
2.h.
Claims (3)
1. one kind is improved permeability of sintering material bed technology, it is characterized in that: the ground of evenly arranging on the sintering charge level when forming melting layer duricrust (1) in lighter for ignition (2) igniting back is dazzling, the dazzling degree of depth surpasses melting layer duricrust thickness and stretches into the bed of material, reaches ventilative purpose by dazzling formation breather hole.
2. according to the described technology of claim 1, it is characterized in that the described dazzling mode in ground of evenly arranging is: it is horizontal, vertical well-regulated evenly arranging, and also can randomly arrange, and aperture 5-15mm, hole depth are 50mm-150mm, pitch of holes 50mm-200mm.
3. one kind is used for the described technology of claim 1 and special-purpose device, it is characterized in that: on the sintering charge level, be provided with a rotating roller (4) that can freely rotate by support (3) fixed, uniform distribution studs with number row dazzling bar (5) on rotating roller (4) roll surface, dazzling pole length is greater than melting layer duricrust (1) thickness, the no additionaling power of rotating roller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101460671A CN101177732A (en) | 2006-11-07 | 2006-11-07 | Process and device for improving permeability of sintering material bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101460671A CN101177732A (en) | 2006-11-07 | 2006-11-07 | Process and device for improving permeability of sintering material bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101177732A true CN101177732A (en) | 2008-05-14 |
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ID=39404146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101460671A Pending CN101177732A (en) | 2006-11-07 | 2006-11-07 | Process and device for improving permeability of sintering material bed |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421948A (en) * | 2012-05-24 | 2013-12-04 | 山东省冶金设计院股份有限公司 | Method for changing state of upper part of mixed materials on trolley and method for realizing above method |
| CN106319204A (en) * | 2015-06-29 | 2017-01-11 | 鞍钢股份有限公司 | Method for improving quality of surface layer sinter |
| CN111663037A (en) * | 2020-07-08 | 2020-09-15 | 鞍钢股份有限公司 | Method for producing sponge iron by using iron oxide in converter slag |
| CN112813255A (en) * | 2021-01-06 | 2021-05-18 | 中冶长天国际工程有限责任公司 | Method for shaping sintering charge level and sintering charge level shaping system thereof |
| CN113074555A (en) * | 2021-04-06 | 2021-07-06 | 马鞍山钢铁股份有限公司 | Sintering and distributing compression roller device capable of adapting to material layer change and application method thereof |
-
2006
- 2006-11-07 CN CNA2006101460671A patent/CN101177732A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421948A (en) * | 2012-05-24 | 2013-12-04 | 山东省冶金设计院股份有限公司 | Method for changing state of upper part of mixed materials on trolley and method for realizing above method |
| CN106319204A (en) * | 2015-06-29 | 2017-01-11 | 鞍钢股份有限公司 | Method for improving quality of surface layer sinter |
| CN106319204B (en) * | 2015-06-29 | 2018-02-27 | 鞍钢股份有限公司 | Method for improving quality of surface layer sinter |
| CN111663037A (en) * | 2020-07-08 | 2020-09-15 | 鞍钢股份有限公司 | Method for producing sponge iron by using iron oxide in converter slag |
| CN112813255A (en) * | 2021-01-06 | 2021-05-18 | 中冶长天国际工程有限责任公司 | Method for shaping sintering charge level and sintering charge level shaping system thereof |
| CN113074555A (en) * | 2021-04-06 | 2021-07-06 | 马鞍山钢铁股份有限公司 | Sintering and distributing compression roller device capable of adapting to material layer change and application method thereof |
| CN113074555B (en) * | 2021-04-06 | 2022-08-26 | 马鞍山钢铁股份有限公司 | Sintering and distributing compression roller device capable of adapting to material layer change and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: TONGHUA IRON AND STEEL CO., LTD. Free format text: FORMER OWNER: TONGHUA IRON AND STEEL CO., LTD. SINTER PLANT Effective date: 20100129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20100129 Address after: Erdaojiang District of Tonghua city in Jilin Province Applicant after: Tonghua Iron & Steel Co., Ltd. Address before: Erdaojiang District of Tonghua city in Jilin Province Applicant before: Sintering Plant, Tonghua Steel Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080514 |