CN204981948U - System is utilized to metallurgical lime powder high efficiency - Google Patents
System is utilized to metallurgical lime powder high efficiency Download PDFInfo
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- CN204981948U CN204981948U CN201520514990.0U CN201520514990U CN204981948U CN 204981948 U CN204981948 U CN 204981948U CN 201520514990 U CN201520514990 U CN 201520514990U CN 204981948 U CN204981948 U CN 204981948U
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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
- Y02P10/20—Recycling
Abstract
The utility model discloses a metallurgical lime powder utilizes the system, mainly to carry out effectual recovery and designs the lime powder among the metallurgical process in order to provide. The utility model discloses metallurgical lime powder utilizes the system, sieve the whitewashed shale shaker of the following lime of particle diameter 5mm, right including setting up being used for in lime raw material supply section the lime powder is pressed the lime powder of ball operation and is pressed ball machine and intercommunication the lime powder delivery unit of shale shaker and lime pressure ball machine, wherein, lime powder delivery unit will the lime powder that bolting goes out transports to lime powder pressure ball machine, the lime powder presses the ball machine right the ball operation is pressed to the lime powder, obtains the granularity and is 20mm-40mm, and proportion is 1.9-2.2tm3's lime ball, returns steelmaking and uses. The utility model discloses isolate metallurgical particle diameter with lime and be less than the lime powder below the 5mm, carry out recycle to it, still avoided the negative effects of lime powder to the steelmaking production process simultaneously.
Description
Technical field
The utility model relates to a kind of metallurgy lime powder effective utilization system.
Background technology
Iron and steel enterprise is the basic industry of national economy, and under the situation of national economy fast development, output of steel improves constantly in recent years, and China's crude steel output of 2013 reaches 7.79 hundred million tons, accounts for global crude steel output 48.48%.Along with " 3R " design concept be rooted in the hearts of the people and steel mill to slag recycle, reduce production cost understanding promote, steel-making derivative (recycle as slag, dedusting ash, mud etc. obtains user and more and more payes attention to.Meanwhile, people often have ignored the high flow rate that bulk raw materials characteristic is brought.
Metallurgy lime, as the necessary main bulk raw materials of a kind of STEELMAKING PRODUCTION, STEELMAKING PRODUCTION " slag former " commonly used, its Main Function is as follows:
(1) the carrying out of liquid steel dephosphorization in steel melting furnace, desulphurization reaction is conducive to;
(2) secondary oxidation of molten steel is prevented;
(3) be conducive to protecting the basic lining of steel melting furnace, formed certain basicity slag (general finishing slag degree of subtracting requirement about 3.5, the acidic substance generated after reducing [Si] oxidation in molten iron are to the erosion of furnace lining;
(4) as the white slag agent of refining furnace as LF stove formation high alkalinity, the carrying out of liquid steel refining desulphurization reaction is conducive to.
Steel-making is also the process of a slag making in a sense, and the importance of metallurgy lime progressively obtains attention and the cognition of people.Lime not only affects smelting molten steel and refining process, but also directly affects the final quality of molten steel.Extensively adopt that quality better, reaction are fast in the world, slag making thoroughly high-quality " quickened lime " (activity degree is greater than 300, the slag making speed accelerating steel melting furnace, the smelting cycle shortening steel melting furnace, reduction lime loss per ton steel (reduce lime consumption amount ~ 15%, improve dephosphorization efficiency, reduce to be mingled with and bring into, substantially increase the quality of molten steel, bring good economic benefit and social benefit to enterprise.
However, the consumption of the lime of STEELMAKING PRODUCTION generally maintains 40 ~ 60kg/t molten steel and puts down, higher for a long time, is one of important indicator affecting STEELMAKING PRODUCTION cost.The major reason studying carefully its comparatively high consumption is except the activity degree of lime itself is lower, also there is a certain proportion of powder in metallurgy lime, this part lime powder enters primary dedusting system and is eliminated in reinforced process, lime consumption in slag former is increased, causes the production cost of steel-making to increase.
Utility model content
For the problems referred to above, the utility model provides a kind of metallurgy lime powder effective utilization system that can make full use of the lime powder in metallurgical technology process.
For achieving the above object, the utility model metallurgy lime powder effective utilization system, comprise the vibratory screening apparatus for the following lime powder of Sieving and casing 5mm be arranged in lime raw material supply section, the lime powder ball press of pressure ball operation and the vibratory screening apparatus described in being communicated with and the lime powder delivery unit of lime ball press are carried out to described lime powder, wherein, the lime powder that described Vibration Screen separates is transported to lime powder ball press by described lime powder delivery unit, described lime powder ball press carries out pressure ball operation to described lime powder, obtaining granularity is 20mm ~ 40mm, proportion is 1.9 ~ 2.2t/m
3lime ball.
Further, described vibratory screening apparatus is arranged on finished belt machine tail place, limestone kiln or steel melting furnace and falls apart shape material feeding system running station place.
Further, described lime powder delivery unit comprises the discharger slip awaing tube be communicated with the sieve material mouth of described vibratory screening apparatus, the lime powder intermediate storage storehouse being communicated with described discharger slip awaing tube discharge port, wherein, the lime powder that described Vibration Screen separates exports described lime powder storage silo to by discharger slip awaing tube, and described lime powder is exported to the feed(raw material)inlet of described lime powder ball press by lime powder storage silo by the 3rd belt pulley.
Further, described lime powder ball press is roller briquetting machine, comprise that a pair axis is parallel to each other, diameter is identical, have the cylinder shape in gap to take turns to each other, each described cylinder shape wheel has some shapes are identical with size, half ball-and-socket of queueing discipline, described cylinder shape wheel is under the driving of motor, with constant speed, rotate backward, lime powder adopts spiral quantitative feeding style evenly to enter cylinder shape wheel district described in two, lime powder between two cylinder shapes wheels at the lime ball of junction pressurized, compression, compression moulding.
Further, also comprise lime ball transportation unit, described lime ball delivery unit comprises lime ball finished bin and transports the dump truck of the lime ball that the outlet of lime ball finished bin exports, the output terminal of the pressure ball finished product output belt of described lime ball press arranges the 4th rotary conveyor, and described lime ball is transported to described lime ball finished bin by the 4th conveyor.
The utility model metallurgy lime powder effective utilization system, vibratory screening apparatus is set up in finished product district, limestone kiln or the loose shape material charging belt transit zone of steel-making at metallurgy lime, lime powder is effectively separated by vibratory screening apparatus, control the granularity (5 ~ 40mm) of the lime needed for STEELMAKING PRODUCTION, thus improve the activity degree of lime needed for STEELMAKING PRODUCTION, slagging speed.
The utility model metallurgy lime powder effective utilization system, lime powder ball press is adopted to carry out pressure ball operation to lime powder, lime ball returns steel melting furnace or refining furnace slag making uses, and reduces the lime loss per ton steel index of smelting and refining procedure well, reaches the object of cost efficiency.
The utility model metallurgy lime powder effective utilization system, one-time investment cost and long-time running cost lower, only need increase relevant device.
Accompanying drawing explanation
Fig. 1 is the utility model metallurgy lime powder effective utilization system structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
The utility model metallurgy lime powder effective utilization system general overview is as follows:
1, metallurgy lime screening and transhipment
Generally there is the lime powder (below granularity 5mm) of about 5% ~ 10% in metallurgy lime used of making steel, this part lime as slag former add fashionable be easy to by one-time dedusting blower negative pressure absorb enter primary dedusting system eliminate, thus add the loss per ton steel of lime.
Vibratory screening apparatus is set up by the shape feeding system transfer point that falls apart at limestone kiln finished belt machine tail or steel melting furnace, lime powder below 5mm granularity is separated from raw material supply section, make steel melting furnace smelt needed for lime Task-size Controlling in 5 ~ 40mm scope, reduce metallurgy lime volatile consumption.In addition, the lime powder below 5mm granularity is separated and enters lime powder intermediate bin, then enters ball press technique section by conveyor transfer, realizes on-line continuous pressure ball.
2, lime powder pressure ball
The pressure ball of the lime powder of below 5mm adopts high pressure powder ball press to carry out pressure ball operation, the Task-size Controlling of finished product lime ball at 20 ~ 40mm, proportion: 1.9 ~ 2.2t/m
3, meet steel melting furnace or refining furnace completely to put in storage granularity and the requirement of strength of bulk raw materials.Lime ball after the charging of the lime powder of high pressure powder ball press and finished product all passes through belt-conveying.
3, the lime sphere of powder returns using method
Finished product after lime powder pressure ball by Automobile Transportation to ground blanking bin, in the lime bin lime sphere of powder being added steel melting furnace by loose shape material feeding system (conveyor mode or derrick mode or other modes) or independent feed bin.
Finished product after lime powder pressure ball also can by conveyor or the direct handling of crane to the high hopper of refining furnace, the pre-melted slag of its Chang Zuowei LF stove refining or make the uses such as white slag.
Finished product after lime powder pressure ball both can be used as the slag former needed for STEELMAKING PRODUCTION, also can be used as refining furnace such as the white slag composition of LF stove and used, and obviously reduced existing ton steel lime consumption, reduced STEELMAKING PRODUCTION cost.
Utility model works principle: set up vibratory screening apparatus by the shape feeding system transfer point that falls apart at limestone kiln finished belt machine tail or steel melting furnace, the lime powder below 5mm granularity is separated from raw material supply section.Vibratory screening apparatus has two motor in synchrony oppositely to place to make vibrator produce reverse exciting force, forces sieve nest to drive screen cloth to do longitudinal motion, and material is parabolic motion periodically forward by exciting force.Undersize material unloads to lime powder intermediate storage storehouse by discharger slip awaing tube under gravity, and lime powder is transported to lime powder pelletizer by transhipment belt again.Lime ball press adopts roller briquetting machine, has a pair axis to be parallel to each other, diameter is identical, have the cylinder shape of certain interval take turns to each other, and cylinder shape has on taking turns that many shapes are identical with size, half ball-and-socket of queueing discipline.Spiral feeding mode dosing is adopted to ensure that material evenly enters pair roller district.Under the driving of motor, two cylinder shapes wheel, with constant speed, rotates backward, material between two cylinder shapes wheels in junction pressurized, compression.Cylinder shape wheel rotates continuously, the lime ball of final compression moulding starts to expand and departs from, fall into the belt conveyer of bottom, after belt conveyer transhipment, discharging is to lime ball finished bin, lime ball is discharged into dump truck by the discharge valve opening finished bin, then is transported in loose shape material ground blanking bin or steelshop by the lime sphere of powder by dump truck.
Embodiment 1
The present embodiment metallurgy lime powder effective utilization system, described system comprises the vibratory screening apparatus for the following lime powder of Sieving and casing 5mm be arranged in lime raw material supply section, the lime powder ball press of pressure ball operation and the vibratory screening apparatus described in being communicated with and the lime powder delivery unit of lime powder ball press are carried out to described lime powder, wherein, the lime powder that described Vibration Screen separates is transported to lime powder ball press by described lime powder delivery unit, described lime powder ball press carries out pressure ball operation to described lime powder, obtaining granularity is 20mm ~ 40mm, proportion is the lime ball of 1.9 ~ 2.2t/m3.Described vibratory screening apparatus be arranged on steel melting furnace fall apart shape material feeding system running station place.
Embodiment 2
As shown in Figure 1, the present embodiment metallurgy lime powder effective utilization system, comprise the vibratory screening apparatus for the following lime powder of Sieving and casing 5mm be arranged in lime raw material supply section, the lime powder ball press of pressure ball operation and the vibratory screening apparatus described in being communicated with and the lime powder delivery unit of lime ball press are carried out to described lime powder, wherein, the lime powder that described Vibration Screen separates is transported to lime powder ball press by described lime powder delivery unit, described lime powder ball press carries out pressure ball operation to described lime powder, obtaining granularity is 20mm ~ 40mm, proportion is the lime ball of 1.9 ~ 2.2t/m3.Described vibratory screening apparatus is arranged on finished belt machine tail place, limestone kiln.
Described lime powder delivery unit comprises the discharger slip awaing tube be communicated with the sieve material mouth of described vibratory screening apparatus, the lime powder storage silo being communicated with described discharger slip awaing tube discharge port, wherein, the lime powder that described Vibration Screen separates exports described lime powder storage silo to by discharger slip awaing tube, and described lime powder is exported to the feed(raw material)inlet of described lime powder ball press by lime powder storage silo by the 3rd belt pulley.
Described lime ball press is roller briquetting machine, comprise that a pair axis is parallel to each other, diameter is identical, have the cylinder shape in gap to take turns to each other, each described cylinder shape wheel has some shapes are identical with size, half ball-and-socket of queueing discipline, described cylinder shape wheel is under the driving of motor, with constant speed, rotate backward, lime powder adopts spiral quantitative feeding style evenly to enter cylinder shape wheel district described in two, lime powder between two cylinder shapes wheels at the lime ball of junction pressurized, compression, compression moulding.
Described metallurgy lime powder effective utilization system also comprises lime ball transportation unit, described lime ball delivery unit comprises lime ball finished bin and transports the dump truck of the lime ball that the outlet of lime ball finished bin exports, the output terminal of the pressure ball finished product output belt of described lime ball press arranges the 4th rotary conveyor, and described lime ball is transported to described lime ball finished bin by the 4th conveyor.
The present embodiment working process is as follows:
Metallurgy lime is delivered to transfer point region by the first rotary conveyor 1 and carries out transfer, first rotary conveyor 1 discharging is to primary vibration sieve 2, the lime powder of below 5mm unloads to lime powder intermediate storage storehouse 5 as screen underflow by discharger slip awaing tube 4 by vibratory screening apparatus work, the screen overflow of more than 5mm is then transported to the second rotary conveyor 3 by swash plate, transports steelshop to.When pressure ball operation need be carried out, open the discharge valve below lime powder intermediate storage storehouse 5, lime powder is unloaded to lime powder ball press 7 by the 3rd rotary conveyor 6, in ball press, cylinder shape takes turns 8 synchronized reverse rotations, extruding, lime powder is finally pressed into the lime sphere of powder of 10 ~ 40mm, sphere of powder finished product is then exported from lime powder ball press 7 by pressure ball finished product belt conveyor 9, by the 4th rotary conveyor 10, the lime sphere of powder is transported to lime ball finished bin 11 again to store, the lime sphere of powder to be transported in ground blanking bin or steelshop refinery process region for steel melting furnace or refining furnace eventually through dump truck 12, reach the object of cost efficiency.
Metallurgy lime powder efficiency utilization processing method described above is adopted to realize, processing method comprises: be separated by following for particle diameter 5mm in lime raw material supply section lime powder and be transported to lime powder ball press, described lime powder carries out pressure ball operation to described lime powder, obtaining granularity is 20mm to 40mm, and proportion is the lime ball of 1.9 to 2.2t/m3.
The present embodiment technical process
Limestone kiln finished belt machine tail or loose shape material feeding system-vibratory screening apparatus (lime powder of screening below 5mm)-discharger slip awaing tube-lime powder intermediate storage storehouse-three conveyor-lime powder ball press-four conveyor-lime ball finished bin-dump truck.
Embodiment illustrates: the vibratory screening apparatus of metallurgy lime under limestone kiln finished belt machine tail or steel-making bulk raw materials feeding system transfer point, the lime powder of below granularity 5mm in screening metallurgy lime.Lime powder is directly unloaded by discharger slip awaing tube and stores to lime powder intermediate storage storehouse temporarily.When needing to carry out pressure ball operation, lime powder is passed through transhipment Belt Conveying in lime ball press receiver bin by lime powder storage silo, lime ball press carries out pressure ball operation by the extruding of a pair synchronized, reverse cylinder shape wheel to the lime powder that spiral transferring is sent here, when the lime ball power that is squeezed disappears, lime ball is separated from ball press.Lime sphere of powder finished product is delivered to lime ball finished bin by feeding system, lime ball finished bin the most at last lime ball is unloaded to dump truck, is transported to the loose shape material ground blanking bin of steel melting furnace or is directly transported in steelshop to meet steel melting furnace or refining furnace use by dump truck.
Metallurgy lime powder efficiency utilization processing method described in the present embodiment, also comprises that described lime ball to be transported to ground blanking bin for subsequent use, or lime ball is used for steel melting furnace or refining furnace uses.
The present embodiment solves the problem that the less lime powder of granularity in metallurgy lime is eliminated by primary dedusting system, is screened out out by lime powder and reach 20 ~ 40mm granularity on the spot after pressure ball to return steel melting furnace or refining furnace uses from lime.Not only one-time investment is few, and producing and manufacturing technique is simple and easy, effectively reduces the production cost of steel-making, and meanwhile, this utility model also reduces the substantial resistance that primary dedusting system runs, and effectively ensure that the Effec-tive Function of dust-removal system.
The processing method that this utility model is set forth has been successfully applied in first company's 2 × 100t converter steelmaking workshop and second company 3 × 120t converter steelmaking design of workshop, all achieves good economic benefit.
Above; be only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should define with claim is as the criterion.
Claims (5)
1. a metallurgy lime powder effective utilization system, it is characterized in that: comprise the vibratory screening apparatus for the following lime powder of Sieving and casing 5mm be arranged in lime raw material supply section, described lime powder carried out to the lime powder delivery unit of the lime powder ball press of pressure ball operation and the vibratory screening apparatus described in connection and lime ball press, wherein, the lime powder that described Vibration Screen separates is transported to lime powder ball press by described lime powder delivery unit, described lime powder ball press carries out pressure ball operation to described lime powder, obtaining granularity is 20mm ~ 40mm, and proportion is 1.9 ~ 2.2t/m
3lime ball.
2. metallurgy lime powder effective utilization system according to claim 1, is characterized in that: described vibratory screening apparatus is arranged on finished belt machine tail place, limestone kiln or steel melting furnace and falls apart shape material feeding system running station place.
3. metallurgy lime powder effective utilization system according to claim 1, it is characterized in that: described lime powder delivery unit comprises the discharger slip awaing tube be communicated with the sieve material mouth of described vibratory screening apparatus, the lime powder storage silo being communicated with described discharger slip awaing tube discharge port, wherein, the lime powder that described Vibration Screen separates exports described lime powder intermediate storage storehouse to by discharger slip awaing tube, and described lime powder is exported to the feed(raw material)inlet of described lime powder ball press by lime powder intermediate storage storehouse by the 3rd belt pulley.
4. metallurgy lime powder effective utilization system according to claim 1, it is characterized in that: described lime ball press is roller briquetting machine, comprise a pair axis to be parallel to each other, diameter is identical, the cylinder shape in gap is had to take turns to each other, each described cylinder shape wheel there are some shapes identical with size, half ball-and-socket of queueing discipline, described cylinder shape wheel is under the driving of motor, with constant speed, rotate backward, the cylinder shape that lime powder adopts spiral quantitative feeding style evenly to enter described in two takes turns district, lime powder between two cylinder shapes wheel at junction pressurized, compression, the lime ball of compression moulding.
5. metallurgy lime powder effective utilization system according to claim 1, it is characterized in that: also comprise lime ball transportation unit, described lime ball delivery unit comprises lime ball finished bin and transports the dump truck of the lime ball that the outlet of lime ball finished bin exports, the output terminal of the pressure ball finished product output belt of described lime ball press arranges the 4th rotary conveyor, and described lime ball is transported to described lime ball finished bin by the 4th conveyor.
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| CN201520514990.0U CN204981948U (en) | 2015-07-15 | 2015-07-15 | System is utilized to metallurgical lime powder high efficiency |
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| CN201520514990.0U CN204981948U (en) | 2015-07-15 | 2015-07-15 | System is utilized to metallurgical lime powder high efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946853A (en) * | 2015-07-15 | 2015-09-30 | 中冶华天南京工程技术有限公司 | Metallurgy lime powder utilization system and technology method |
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- 2015-07-15 CN CN201520514990.0U patent/CN204981948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946853A (en) * | 2015-07-15 | 2015-09-30 | 中冶华天南京工程技术有限公司 | Metallurgy lime powder utilization system and technology method |
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