CN220099139U - Efficient and energy-saving sludge cold pressing ball processing system - Google Patents
Efficient and energy-saving sludge cold pressing ball processing system Download PDFInfo
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- CN220099139U CN220099139U CN202321511314.9U CN202321511314U CN220099139U CN 220099139 U CN220099139 U CN 220099139U CN 202321511314 U CN202321511314 U CN 202321511314U CN 220099139 U CN220099139 U CN 220099139U
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- 239000010802 sludge Substances 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- 238000012216 screening Methods 0.000 claims description 22
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 24
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 238000003723 Smelting Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000000227 grinding Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The utility model relates to the field of steel smelting, in particular to a high-efficiency energy-saving sludge cold-pressing ball processing system, which comprises a proportioning device, wherein the proportioning device comprises a sludge bin, an iron scale bin and an additive bin, wherein discharge ports of the sludge bin, the iron scale bin and the additive bin are all connected with a feed port on a feed bin through a first belt conveyor, a discharge port arranged on the feed bin is connected with a feed port of an edge runner mill, and a discharge port arranged on the edge runner mill is connected with a feed port of a buffer bin through a second belt conveyor; the utility model has simple structure and convenient use, can successfully solve the problems of balling, strength and the like, improves the production scale to 30 ten thousand tons/year, improves the production efficiency by 6 times, reduces the production cost by 40 percent, and simultaneously solves the environmental protection problem.
Description
Technical Field
The utility model relates to the field of steel smelting, in particular to a high-efficiency energy-saving sludge cold-pressing ball processing system.
Background
In the steelmaking production process of the steel industry, a large amount of high-temperature iron-containing dust is generated, the dust is recycled through a wet dust removal system to generate sludge slurry, the slurry is subjected to precipitation and filter pressing to prepare mud cakes, namely OG mud, commonly called converter mud, the iron-containing grade of the OG mud is about 30% -50% (dry weight), the water content is 25% -30%, and the iron-containing mud cannot be directly recycled in internal processes of the steel industry without secondary processing. The production amount of sludge (or iron-containing dust) in converter steelmaking is 35Kg (dry weight) per ton of steel, and calculated according to the 2022 national coarse steel yield of 8.16 hundred million tons, the annual production amount of converter OG sludge (or iron-containing dust) in industry is 2856 ten thousand tons, calculated according to the average iron-containing grade of 40%, if the waste is not recycled, 1142.4 ten thousand tons of iron resources are lost and wasted each year, and meanwhile, the environment pollution is huge.
Therefore, how to realize the recycling of the resources with high efficiency and energy conservation is always the subject of the search in the steel industry. The technology of cold-pressing balls is generally adopted in the industry, mud cakes are processed into mud balls with certain moisture, strength and particle size, the mud balls are directly added in the converter smelting process, and the technology is called a short-flow recycling technology in the industry, so that the resource recycling can be realized, part of scrap steel and coolant can be replaced, the recycling flow is short, the secondary investment is low, and the steelmaking processing cost is reduced. The process is seemingly simple, and the problems of difficult balling, insufficient strength, low production efficiency, environmental pollution, high processing cost and the like appear in practice, so that the process is quite extensive.
Disclosure of Invention
In order to solve the problems, the utility model provides the high-efficiency energy-saving sludge cold-pressing ball processing system which has a simple structure, can greatly improve the production efficiency, reduce the environmental pollution and the production cost, and can successfully solve the problems of ball forming, strength and the like.
The utility model relates to a high-efficiency energy-saving sludge cold-pressing ball processing system, which comprises a batching device, wherein the batching device comprises a sludge bin, an iron scale bin and an additive bin, wherein the discharge ports of the sludge bin, the iron scale bin and the additive bin are all connected with a feed port on a feed bin through a first belt conveyor, the discharge port arranged on the feed bin is connected with a feed port of an edge runner mill, and the discharge port arranged on the edge runner mill is connected with a feed port of a buffer bin through a second belt conveyor;
the discharge gate that sets up on the surge bin is connected with high-pressure ball press through the preformer, be connected with screening plant on the high-pressure ball press, be provided with qualified product outlet and unqualified product export on the screening plant, qualified product export links to each other with the stacker through third band conveyer, unqualified product export links to each other with the feed inlet on the surge bin through fourth band conveyer.
Preferably, the sludge bin and the iron scale bin are respectively connected with the first belt conveyor through a feeder, and belt scales are arranged between the feeder and the first belt conveyor;
the additive bin is connected with the first belt conveyor through a spiral scale.
Preferably, the feed bin is connected with the feed inlet of the wheel mill through a volume balance.
Preferably, three feeding bins are arranged, namely a first feeding bin, a second feeding bin and a third feeding bin;
the third feeding bin is connected with one end, far away from the proportioning device, of the first belt conveyor, and the first feeding bin and the second feeding bin are arranged in an area between the third feeding bin and the proportioning device and are connected with the first belt conveyor through the discharger respectively.
Preferably, the number of the wheel mills is three, and the three wheel mills are respectively connected with the first feeding bin, the second feeding bin and the third feeding bin through three volume scales.
Preferably, the surge bin is connected to the inlet of the prepress by a volumetric scale.
Preferably, the screening device is a roller screening machine.
The utility model has simple structure and convenient use, can successfully solve the problems of balling, strength and the like, improves the production scale to 30 ten thousand tons/year, improves the production efficiency by 6 times, reduces the production cost by 40 percent, and simultaneously solves the environmental protection problem.
The utility model has the technical advantages of special, unique, high efficiency, low consumption and the like, has popularization value in and out of the steel industry, and has technical protection value.
The utility model realizes the continuity of the production system, improves the production efficiency, and realizes the standardization and modularization of the process scale.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Reference numerals: 1-sludge bin, 2-feeder, 3-belt scale, 4-spiral scale, 5-first belt conveyor, 6-discharger, 7-feed bin, 8-volume scale, 9-wheel mill, 10-second belt conveyor, 11-buffer bin, 13-preformer, 14-high-pressure ball press, 15-roller screening machine, 16-fourth belt conveyor, 17-third belt conveyor, 18-stacker, 19-cold-pressed ball curing molding material pile, 21-transfer place bin and 23-finished product screening machine.
Detailed Description
The utility model relates to a high-efficiency energy-saving sludge cold-pressing ball processing system, which comprises a batching device, wherein the batching device comprises a sludge bin 1, an iron scale bin and an additive bin, wherein the discharge ports of the sludge bin 1, the iron scale bin and the additive bin are connected with a feed port on a feed bin 7 through a first belt conveyor 5, the discharge port arranged on the feed bin 7 is connected with a feed port of an edge runner 9, and the discharge port arranged on the edge runner 9 is connected with a feed port of a buffer bin 11 through a second belt conveyor 10;
the discharge gate that sets up on surge bin 11 is connected with high-pressure ball press 14 through preformer 13, be connected with screening plant on the high-pressure ball press 14, be provided with qualified product export and disqualification export on the screening plant, the qualification export links to each other with stacker 18 through third band conveyer 17, the disqualification export links to each other with the feed inlet on the surge bin 11 through fourth band conveyer 16.
The sludge bin 1 and the iron scale bin are respectively connected with a first belt conveyor 5 through a feeder 2, and belt scales are arranged between the feeder 2 and the first belt conveyor 5;
the additive bin is connected to a first belt conveyor 5 by means of a screw scale 4.
The feed bin 7 is connected with a feed inlet of an edge runner 9 through a volume balance 8.
The number of the feeding bins 7 is three, namely a first feeding bin, a second feeding bin and a third feeding bin;
the third feeding bin is connected with one end, far away from the proportioning device, of the first belt conveyor 5, and the first feeding bin and the second feeding bin are arranged in an area between the third feeding bin and the proportioning device and are connected with the first belt conveyor 5 through the discharger 6 respectively.
The number of the wheel mills 9 is three, and the three wheel mills 9 are respectively connected with the first feeding bin, the second feeding bin and the third feeding bin through three volume scales 8.
The surge bin 11 is connected with a feed inlet of a preformer 13 through a volumetric balance 8.
The screening device is a roller screening machine 15.
The utility model uses the following process flow:
the technological process consists of five modules of batching, mixing and grinding, ball pressing screening, floor maintenance and finished product screening, and is respectively described as follows:
1. the main function of the batching module is to mix iron-containing raw sludge, iron scale and additives to be recovered according to a certain mass ratio. The method is mainly characterized by wide resources, low purchase cost, good balling performance and high strength of sludge balls. The flow of the module is as follows: the forklift is fed, additives adopt pneumatic conveying, a sludge bin 1, an iron scale bin and an additive bin, a feeder 2 and a screw conveyor, a belt scale 3, a screw scale 4, a first belt conveyor 5, a discharger 6 and a mixing and grinding module.
2. Mix and grind the module, this module main function carries out mixing with the mixture and grinds. The flow is as follows: batching module, feeding bin 7, volumetric balance 8, wheel mill 9, second belt conveyor 10 and ball pressing screening module. The key point in the module is that the materials must be fully mixed and ground by an edge runner 9, so as to realize the crushing, kneading and grinding, mixing of the mixture, change of the shape and arrangement rule of microscopic particles, discharge of air among particles, increase of density, and increase of activity and sphericity required by the ball pressing process in the next pass. The optimal equipment for realizing the module function is the wet type wheel mill 9, but the conventional wheel mill 9 is difficult to realize automatic, efficient and continuous operation, the production efficiency is extremely low, the labor intensity of workers is extremely high, and the improvement is carried out on the basis of the traditional equipment by the company, so that the breakthrough is realized, the patent number ZL201620723578.4 of the high-efficiency wet type wheel mill 9 is filed, and the single-machine production efficiency is improved by 6 times. The main unique design of the module is that the volume balance 8 is combined with the high-efficiency wet wheel mill 9, the intelligent control is adopted to realize automatic mixing and grinding automatic discharging of constant volume automatic feeding, the mixing and grinding quality of the mixture is controlled by a given time, the mixing and grinding quality control automation is realized, the automatic operation of a single wheel mill 9 is realized, and the single machine efficiency is improved by 6 times. The other unique design of the module is a multi-group parallel combination design of a volume balance 8 and an edge runner 9, so that continuous and automatic output of materials is realized, continuous production of a system is realized, and the capacity of the system is improved into simple module superposition: for example, the daily capacity of a single machine of the traditional wet wheel mill 9 is 50t/d, the single machine capacity of the 'high-efficiency wet wheel mill 9' is improved to 300t/d, and thus the production scale of 10 ten thousand tons/year can be realized by the parallel combination design of 3 sets of 'volumetric balance 8+wheel mill 9'. The scale design can be standardized and serialized by analogy with the scale of 20 ten thousand tons/year, 30 ten thousand tons/year and the like.
3. Ball screening module presses, and this module mainly accomplishes ball and screening, presses the ball to accomplish through high-pressure ball press 14, screens and returns the ball of pressing through roller type screening machine 15 with powder screen out, and qualified green ball gets into next module. The process flow is as follows: mixing and grinding module, buffer bin 11, volumetric balance 8, preformer 13, high-pressure ball press 14, roller type screening machine 15, fourth belt conveyor 16 for returning screened powder to ball press module or third belt conveyor 17 for transferring qualified green balls to a floor maintenance module. The module selects the specification and model of the high-pressure ball press 14 according to different production capacity scales, and selects proper balls and particle sizes according to the characteristics of materials.
4. The floor curing module uniformly stacks green pellets by a three-dimensional belt stacker 18, patent number ZL20182 0876909.7 to form a cold-pressed pellet curing molding material stack 19 for natural curing, removing water and improving compressive strength. The balls just pressed out of the high-pressure ball press 14 are green balls, have low strength, cannot be used as finished products immediately, and have extremely high breaking rate and seriously lower production efficiency if a conventional forklift or a belt conveyor is adopted for carrying out the transportation. For this purpose, our company specially develops and claims a three-dimensional belt stacker 18 for the patent to accommodate the special requirements of the process. After the three-dimensional belt stacker 18 is adopted for carrying out the stacking, the crushing rate of the green pellets is reduced from 50% to below 10%. The other key technology in the module is curing, the main function of curing is to further bring the dehydration and consolidation reaction of the additive into effect through standing, and the compressive strength of the green pellets is improved from 100N/to more than 800N/and the falling strength of the green pellets with the height of 500mm is improved from 1 time to more than 10 times through 24-144 h curing. After the maintenance is finished, the cold-pressed green balls reach the quality index of qualified products, and the products can be sold and used in factory.
5. The main function of the finished product screening module is to screen out the powder contained in the finished product balls, and the powder returns to the ingredients for secondary processing, so that qualified finished product balls are loaded and sold in a car. The specific flow is as follows: curing a formed material pile, carrying out forklift transportation, transferring a ground bin 21, carrying out a fifth belt conveyor, carrying out a finished product screening machine 23, carrying out car loading and selling, and returning finished product powder to the ingredients by the belt conveyor. The module realizes direct loading of the product, direct return of finished powder to the ingredients without falling to the ground, greatly improves the production efficiency, reduces the environmental pollution caused in the process of falling to the ground and transporting the material, and realizes clean production.
The combined design of the volume balance 8 and the high-efficiency wet wheel mill 9 in the mixed grinding module realizes automatic continuous control of single-group equipment and improves the production efficiency. The volume balance 8 is combined with the further modularized parallel design of the single-group equipment of the high-efficiency wet wheel mill 9, so that the continuity of a production system is realized, the production efficiency is improved, and the standardization and modularization of the process scale are realized.
The technical achievements obtained by the utility model can achieve the leading performance of the industry in the sludge processing of the steel industry, and experience, technology and achievements obtained in the research and development process can inspire and reference the forming processing of different 'sludge' in the whole steel industry or other industries, can be even directly utilized, and has popularization value.
Claims (7)
1. The utility model provides a high-efficient energy-conserving mud ball processing system that colds pressing, includes dosing unit, its characterized in that, dosing unit includes sludge bin, scale bin and additive storehouse, the discharge gate in sludge bin, scale bin and additive storehouse all links to each other with the feed inlet on the feed bin through first band conveyer, and the discharge gate that sets up on the feed bin links to each other with the feed inlet of wheel mill, the discharge gate that sets up on the wheel mill links to each other with the feed inlet of buffering storehouse through second band conveyer;
the discharge gate that sets up on the surge bin is connected with high-pressure ball press through the preformer, be connected with screening plant on the high-pressure ball press, be provided with qualified product outlet and unqualified product export on the screening plant, qualified product export links to each other with the stacker through third band conveyer, unqualified product export links to each other with the feed inlet on the surge bin through fourth band conveyer.
2. The efficient and energy-saving sludge cold-pressing ball processing system according to claim 1, wherein the sludge bin and the iron scale bin are respectively connected with a first belt conveyor through a feeder, and a belt scale is arranged between the feeder and the first belt conveyor;
the additive bin is connected with the first belt conveyor through a spiral scale.
3. The energy efficient sludge cold-pressed ball processing system of claim 2, wherein the feed bin is connected with the feed inlet of the wheel mill through a volume scale.
4. The efficient and energy-saving sludge cold-pressing ball processing system according to claim 3, wherein three feeding bins are arranged, namely a first feeding bin, a second feeding bin and a third feeding bin;
the third feeding bin is connected with one end, far away from the proportioning device, of the first belt conveyor, and the first feeding bin and the second feeding bin are arranged in an area between the third feeding bin and the proportioning device and are connected with the first belt conveyor through the discharger respectively.
5. The efficient and energy-saving sludge cold-pressing ball processing system according to claim 4, wherein three wheel mills are arranged and are respectively connected with the first feeding bin, the second feeding bin and the third feeding bin through three volume scales.
6. The energy efficient sludge cold-pressed ball processing system according to claim 5, wherein the surge bin is connected with the feed inlet of the preformer through a volume scale.
7. The energy efficient sludge cold-pressed ball processing system of claim 6, wherein said screening device is a roller screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321511314.9U CN220099139U (en) | 2023-06-14 | 2023-06-14 | Efficient and energy-saving sludge cold pressing ball processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321511314.9U CN220099139U (en) | 2023-06-14 | 2023-06-14 | Efficient and energy-saving sludge cold pressing ball processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220099139U true CN220099139U (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321511314.9U Active CN220099139U (en) | 2023-06-14 | 2023-06-14 | Efficient and energy-saving sludge cold pressing ball processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220099139U (en) |
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2023
- 2023-06-14 CN CN202321511314.9U patent/CN220099139U/en active Active
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