CN112452512A - Processing system for crushing solid fuel during steel sintering production - Google Patents
Processing system for crushing solid fuel during steel sintering production Download PDFInfo
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- CN112452512A CN112452512A CN202011357318.7A CN202011357318A CN112452512A CN 112452512 A CN112452512 A CN 112452512A CN 202011357318 A CN202011357318 A CN 202011357318A CN 112452512 A CN112452512 A CN 112452512A
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- solid fuel
- double
- screen
- layer
- crushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a processing system for crushing solid fuel in steel sintering production, which comprises: the permeable particle size of the upper layer of sieve pores of the double-layer vibrating sieve is 15mm, and the permeable particle size of the lower layer of sieve pores is 3 mm; the feeding end of the vibrating feeder is positioned below the discharging end of the upper screen of the double-layer vibrating screen, the feeding end of the double-roller crusher is positioned below the discharging end of the vibrating feeder and is used for primarily crushing the solid fuel which does not pass through the upper screen of the double-layer vibrating screen to obtain the solid fuel with the particle size of 8-10mm, and the feeding end of the four-roller crusher is respectively communicated with the discharging end of the double-roller crusher and the discharging end of the lower screen of the double-layer vibrating screen; after the invention is utilized, under the condition of the same treatment capacity, the production load of the coarse crushing double-roller crusher is reduced by about two thirds, and the crushing production load of the fine crushing four-roller crusher is reduced by about one third.
Description
Technical Field
The invention belongs to the field of ferrous metallurgy crushing equipment, and particularly relates to a treatment system for crushing solid fuel during steel sintering production.
Background
The ideal particle size range of the fuel used in the sintering production process is 0.5-3mm, and in order to meet the requirements of the production process, the solid fuel (crushed coke, semi coke, anthracite and the like) needs to be crushed and processed. At present, the mainstream design of the domestic fuel crushing process meets the requirement of the granularity of the solid fuel through two procedures of coarse crushing and fine crushing. The rough crushing is generally completed by a double-roller crusher or a double-impact crusher, and the fine crushing is mainly completed by a four-roller crusher.
The solid fuel has an insufficiently determined origin and an insufficiently stabilized grain size composition, typically a grain size of > 15mm of about 30-40%, a grain size of 3-15mm of about 30-40% and a grain size of < 3mm of about 30-40%. According to the current fuel crushing process, the solid fuel of each grade is uniformly crushed twice through coarse crushing and fine crushing, the granularity is crushed to be below 3mm, but the granularity of 30-40% of the solid fuel is less than 3mm, the crushing is not needed, the repeated crushing not only reduces the operation efficiency of equipment, but also increases the proportion of the grade less than 0.5 mm.
Disclosure of Invention
The invention aims to provide a processing system for crushing solid fuel during steel sintering production, which is used for improving the grain size qualification rate of the solid fuel and improving the crushing efficiency by eliminating a repeated crushing way.
The invention adopts the following technical scheme: a system for crushing solid fuel in steel sintering production, comprising:
the feeding end of the double-layer vibrating screen is positioned below the discharging end of the solid fuel rubber belt conveyor, the transparent particle size of the upper layer of screen holes is larger than that of the lower layer of screen holes, the transparent particle size of the upper layer of screen holes of the double-layer vibrating screen is 15mm, and the transparent particle size of the lower layer of screen holes is 3 mm;
the feeding end of the vibrating feeder is positioned below the discharging end of the upper screen of the double-layer vibrating screen and is used for receiving the solid fuel which does not pass through the upper screen of the double-layer vibrating screen,
the feeding end of the double-roller crusher is positioned below the discharging end of the vibrating feeder, and the solid fuel which does not pass through the upper screen of the double-layer vibrating screen is subjected to primary crushing to obtain the solid fuel with the particle size of 8-10mm,
the feeding end of the four-roller crusher is respectively communicated with the discharging end of the double-roller crusher and the discharging end of the lower-layer screen mesh of the double-layer vibrating screen, and is used for carrying out secondary crushing on the solid fuel which does not pass through the lower-layer screen mesh of the double-layer vibrating screen and the solid fuel which passes through the double-roller crusher to obtain the solid fuel with the particle size of less than 3mm,
the solid fuel crushed by the four-roller crusher and the fixed fuel passing through the lower-layer screen of the double-layer vibrating screen are conveyed to the batching chamber by the crushed fuel belt conveyor to participate in batching.
Further, the discharge end of the lower screen of the double-layer vibrating screen directly conveys the solid fuel passing through the screen holes to the feeding end of the broken fuel rubber belt conveyor through the screening discharge pipe.
Furthermore, the discharge end of the double-roller crusher directly conveys the crushed solid fuel to the feeding end of the fuel transfer rubber belt conveyor through a crushed fuel discharge pipe, and the discharge end of the fuel transfer rubber belt conveyor is positioned above the feeding end of the four-roller crusher.
Further, a bunker is arranged below the discharging end of the solid fuel rubber belt conveyor, the bunker is funnel-shaped, a vibrating hopper is arranged below a discharging port of the bunker, and the discharging port of the vibrating hopper is located above a feeding end of the double-layer vibrating screen.
Further, the solid fuel is crushed coke, semi coke or anthracite.
Furthermore, the vibration hopper is composed of a hopper body, a hanging device and a vibration motor, and the vibration motor is arranged on the outer wall of the vibration hopper and symmetrically arranged.
The invention has the beneficial effects that: after the method is utilized, under the condition of the same treatment capacity, the production load of the coarse crushing pair double-roller crusher is reduced by about two thirds, and the crushing production load of the fine crushing pair four-roller crusher is reduced by about one third; the service life of the crusher is prolonged, and the operation cost is reduced; compared with the traditional fuel crushing method, the method effectively avoids the problem of repeated crushing, reduces the crushing flow, and greatly improves the proportion of 0.5-3mm size fraction of the crushed solid fuel in the crushing effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the vibrating bucket of the present invention.
Wherein: 1. a double-layer vibrating screen; 2. a vibrating feeder; 3. a double roll crusher; 4. a four-roll crusher; 5. a solid fuel belt conveyor; 6. a broken fuel belt conveyor; 7. screening a discharge pipe; 8. crushing the fuel discharge pipe; 9. a fuel transfer belt conveyor; 10. a fuel bunker; 11. a vibrating hopper; 12. a hanging device; 13. a vibration motor.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a treatment system for crushing solid fuel during steel sintering production, which comprises a double-layer vibrating screen 1, a vibrating feeder 2, a double-roller crusher 3 and a four-roller crusher 4, wherein a feeding end of the double-layer vibrating screen 1 is positioned below a discharging end of a solid fuel rubber belt conveyor 5, the transparent particle size of an upper layer sieve pore of the double-layer vibrating screen 1 is larger than that of a lower layer sieve pore, the transparent particle size of the upper layer sieve pore of the double-layer vibrating screen 1 is 15mm, and the transparent particle size of the lower layer sieve pore is 3mm, as shown in figure 1.
The lower part of the discharge end of the solid fuel rubber belt conveyor 5 is provided with a fuel bin 10, the fuel bin 10 is generally rolled by common carbon steel with the thickness of 10-16mm and fixedly installed on a concrete foundation, and as the solid fuel has lighter specific gravity and often has larger moisture and corrodes metal materials, the inner wall of the fuel bin 10 is suitable for being subjected to anticorrosion treatment under general conditions. The bunker 10 is funnel-shaped, a vibrating hopper 11 is arranged below a discharge port of the bunker, and the discharge port of the vibrating hopper 11 is positioned above a feeding end of the double-layer vibrating screen 1.
As shown in fig. 2, the vibration bucket 11 is composed of a bucket body, a hanging device 12, and a vibration motor 13. The body of the vibration bucket 11 is made of a 10-16mm thick common carbon steel plate in a rolling mode, and the inner wall of the body of the vibration bucket 11 needs to be subjected to wear-resisting treatment due to certain corrosivity of part of solid fuel. The hanging device 12 is composed of a buffer spring, an upper lifting hook and a lower lifting hook, the vibration motors 13 determine power according to actual load, 2 vibration motors are generally arranged, the vibration buckets 11 are symmetrically arranged along the outer wall of the body, a motor shaft is in a horizontal state when the vibration motors 13 are installed, and the two vibration motors 13 work simultaneously.
The feeding end of the vibrating feeder 2 is positioned below the discharging end of the upper screen of the double-layer vibrating screen 1, the vibrating feeder 2 is used for receiving solid fuel which does not pass through the upper screen of the double-layer vibrating screen 1, and the solid fuel is crushed coke, semi-coke or anthracite. The feeding end of the double-roller crusher 3 is positioned below the discharging end of the vibrating feeder 2, and the solid fuel which does not pass through the upper-layer screen mesh of the double-layer vibrating screen 1 is subjected to primary crushing to obtain the solid fuel with the particle size of 8-10 mm.
The pan feeding end of four-roller crusher 4 is linked together with the discharge end of double-roller crusher 3 and the discharge end of the 1 lower floor screen cloth of double-deck shale shaker respectively, four-roller crusher 4 is used for carrying out the secondary crushing to the solid fuel that does not pass through the 1 lower floor screen cloth of double-deck shale shaker and the solid fuel through double-roller crusher 3, obtain the solid fuel that the particle diameter is less than 3mm, wherein, solid fuel after 4 crushings through four-roller crusher and the fixed fuel through the 1 lower floor screen cloth of double-deck shale shaker all transport to batching room participation batching through broken fuel tape conveyor 6.
The discharge end of the lower screen of the double-layer vibrating screen 1 directly conveys the solid fuel passing through the screen holes to the feed end of a broken fuel rubber belt conveyor 6 through a screening discharge pipe 7. The discharge end of the double-roller crusher 3 directly conveys the crushed solid fuel to the feeding end of a fuel transfer rubber belt conveyor 9 through a crushed fuel discharge pipe 8, and the discharge end of the fuel transfer rubber belt conveyor 9 is positioned above the feeding end of the four-roller crusher 4.
The main part of double roll crusher 3 is two pivoted rollers in opposite directions, and the main part of four roll crusher 4 is four pivoted rollers in opposite directions, and fragile material is sent into the storehouse of weighing that is equipped with weighing sensor by conveying equipment, then through the feed arrangement of roll squeezer, gets into the size the same, and between the pivoted roller relatively, by the roller with the material pull-in roll gap in, press into closely knit material cake with the material, fall from the roll gap, through going out the hopper, by conveying equipment output.
The solid fuel is transported from the fuel tank to the bunker 10 by the solid fuel belt conveyor 5, and the bunker 10 plays a role in temporarily storing the solid fuel and buffering the processes before and after. A vibration hopper 11 is arranged below the fuel bin 10, and plays a role in stabilizing flow and preventing blockage in the downward discharging process of the solid fuel. An electro-hydraulic gate valve is connected below the vibrating hopper 11 and used for controlling the downward flow of the solid fuel, and the lower opening of the electro-hydraulic gate valve is connected with a receiving opening of the double-layer vibrating screen 1.
The permeable particle size of the upper layer sieve mesh of the double-layer vibrating screen 1 is 15mm, the permeable particle size of the lower layer sieve mesh of the double-layer vibrating screen 1 is 3mm, after the solid fuel is classified by the double-layer vibrating screen 1, the solid fuel with the particle size of more than 15mm is conveyed by the vibrating feeder 2, and after the solid fuel is crushed by two procedures of primary crushing and secondary crushing, namely, the solid fuel is crushed by the double-roller crusher 3 and the four-roller crusher 4 and then conveyed to the batching room by the crushed fuel rubber belt conveyor 6 to participate in batching; the solid fuel with the size fraction of 3-15mm is conveyed by a fuel transfer rubber belt conveyor 9, directly enters a four-roller crusher 4 for secondary crushing, and is conveyed to a batching chamber by a crushed fuel rubber belt conveyor 6 to participate in batching; the solid fuel with the size fraction below 3mm is directly conveyed to a batching room by a broken fuel belt conveyor 6 to participate in batching without a breaking process.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A system for crushing solid fuel in steel sintering production, comprising:
the feeding end of the double-layer vibrating screen (1) is positioned below the discharging end of the solid fuel rubber belt conveyor (5), the transparent particle size of the upper layer of screen holes is larger than that of the lower layer of screen holes, the transparent particle size of the upper layer of screen holes of the double-layer vibrating screen (1) is 15mm, and the transparent particle size of the lower layer of screen holes is 3 mm;
a vibrating feeder (2), the feeding end of which is positioned below the discharging end of the upper screen of the double-layer vibrating screen (1) and is used for receiving the solid fuel which does not pass through the upper screen of the double-layer vibrating screen (1),
a double-roller crusher (3), the feeding end of which is positioned below the discharging end of the vibrating feeder (2) and which primarily crushes the solid fuel which does not pass through the upper screen of the double-layer vibrating screen (1) to obtain the solid fuel with the particle size of 8-10mm,
a four-roller crusher (4), the feeding end of which is respectively communicated with the discharging end of the double-roller crusher (3) and the discharging end of the lower screen of the double-layer vibrating screen (1) and is used for carrying out secondary crushing on the solid fuel which does not pass through the lower screen of the double-layer vibrating screen (1) and the solid fuel which passes through the double-roller crusher (3) to obtain the solid fuel with the particle size less than 3mm,
the solid fuel crushed by the four-roller crusher (4) and the fixed fuel passing through the lower-layer screen mesh of the double-layer vibrating screen (1) are conveyed to a batching chamber by a crushed fuel belt conveyor (6) to participate in batching.
2. The system for crushing solid fuel in the process of steel sintering production according to claim 1, wherein the discharge end of the lower screen of the double-layer vibrating screen (1) directly conveys the solid fuel passing through the screen holes to the feed end of the crushed fuel belt conveyor (6) through a screening discharge pipe (7).
3. The system for crushing solid fuel in the process of steel sintering production according to claim 1, wherein the discharge end of the double-roller crusher (3) directly conveys the crushed solid fuel to the feeding end of a fuel transfer belt conveyor (9) through a crushed fuel discharge pipe (8), and the discharge end of the fuel transfer belt conveyor (9) is positioned above the feeding end of the four-roller crusher (4).
4. A handling system for crushing solid fuel in steel sintering production according to any of claims 1-3, characterized in that a bunker (10) is arranged below the discharge end of the solid fuel belt conveyor (5), the bunker (10) is funnel-shaped, a vibrating hopper (11) is arranged below the discharge port of the bunker, and the discharge port of the vibrating hopper (11) is positioned above the feed end of the double-layer vibrating screen (1).
5. The system for crushing solid fuel in the process of producing steel by sintering according to claim 4, wherein the solid fuel is crushed coke, semi coke or anthracite.
6. The system for crushing the solid fuel in the process of producing the steel by sintering according to the claim 5, characterized in that the vibration bucket (11) is composed of a bucket body, a hanging device (12) and a vibration motor (13), and the vibration motor (13) is arranged on the outer wall of the vibration bucket (11) and is arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357318.7A CN112452512A (en) | 2020-11-27 | 2020-11-27 | Processing system for crushing solid fuel during steel sintering production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357318.7A CN112452512A (en) | 2020-11-27 | 2020-11-27 | Processing system for crushing solid fuel during steel sintering production |
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| Publication Number | Publication Date |
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| CN112452512A true CN112452512A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011357318.7A Pending CN112452512A (en) | 2020-11-27 | 2020-11-27 | Processing system for crushing solid fuel during steel sintering production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023045727A1 (en) * | 2021-09-27 | 2023-03-30 | 中冶长天国际工程有限责任公司 | Process method for preparing sintering fuel at fixed scale, system, and use method thereof |
-
2020
- 2020-11-27 CN CN202011357318.7A patent/CN112452512A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023045727A1 (en) * | 2021-09-27 | 2023-03-30 | 中冶长天国际工程有限责任公司 | Process method for preparing sintering fuel at fixed scale, system, and use method thereof |
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