Low-energy-consumption type blast furnace coke and ore tank fly ash uniformly-mixing energy-saving conveying device
By designing a low-energy consumption blast furnace coke and ore trough dust mixing and energy-saving conveying device, and utilizing the synergistic effect of the spiral trough and stirring blades, the problem of uneven mixing of dust ash in the mixer is solved, and the full mixing of dust ash and the improvement of metallurgical properties are achieved.
Patent Information
- Application Number
- CN202511037934.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2025-10-14
AI Technical Summary
The dust from the blast furnace coke trough and ore trough cannot be fully mixed with other materials in the mixer, resulting in unstable fixed carbon content in the sintered ore, affecting the metallurgical properties.
A low-energy consumption, energy-saving mixing and conveying device for blast furnace coke and ore hopper dust removal is designed, which includes a mixing box, a star-shaped ash discharger, a conveying pipeline and a mixing mechanism. Through the coordinated action of spiral troughs, stirring blades and scrapers, deep mixing of dust removal ash is achieved during the conveying process.
It achieves full and uniform mixing of dust removed from the coke trough and the ore trough, stabilizes the fixed carbon content of the sintered ore, improves metallurgical properties, and reduces equipment energy consumption and cleaning difficulty.
Smart Images
Figure CN120774199A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of metallurgical production, and in particular relates to a low-energy-consumption blast furnace coke and ore trough dust removal ash mixing and energy-saving conveying device. Background Art
[0002] Blast furnace coke trough dust removal ash and ore trough dust removal ash are iron-containing dust collected by dust removal equipment during the sintering and ironmaking processes of steel enterprises.
[0003] The blast furnace coke trough dust removal ash and the ore trough dust removal ash are prone to secondary dust pollution during the process of being pulled by cars and conveyed by belts. The use of pipeline transportation can avoid the dust problem, but the coke trough and ore trough dust removal ash are separately mixed in the batching process. The two have poor hydrophilicity and cannot be fully mixed with other materials in the mixer, resulting in the fixed carbon content of the sintered ore fluctuating, which seriously affects the metallurgical properties of the sintered ore. Summary of the Invention
[0004] Aiming at the problem in the prior art that the dust from the coke trough and the ore trough cannot be fully mixed with other materials inside the mixer, the present invention provides a low-energy consumption type blast furnace coke and ore trough dust mixing and energy-saving conveying device and conveying method.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a low-energy consumption blast furnace coke and ore trough dust mixing and energy-saving conveying device, comprising a mixing box, the bottom end of which is fixedly connected to a star-shaped ash discharger, the mixing box is fixedly connected to symmetrically arranged conveying pipes, the bottom end output port of the star-shaped ash discharger is fixedly connected to an ash discharge pipe, and the mixing box is provided with an opening and closing conveying mechanism; The mixing box is provided with a mixing mechanism for pre-mixed coke trough and ore trough dust removal, the mixing mechanism includes an installation cavity and a first motor, two rotating rods are rotatably connected in the installation cavity, spiral grooves are provided on the rotating rods, and driving gears are fixedly connected to the top ends of the rotating rods, a plurality of driven rods are rotatably connected in the installation cavity, stirring blades are fixedly connected to the driven rods, and driven gears are fixedly connected to the top ends of the driven rods, a reciprocating screw is rotatably connected in the middle position of the installation cavity, a scraper is threadedly connected to the reciprocating screw, and two power rods are fixedly connected to the scraper.
[0006] Specifically, the top input port of the star-shaped ash discharger is connected to the bottom of the mixing box, and the conveying pipeline is connected to the mixing box.
[0007] Specifically, the mounting cavity is opened at the inner top of the mixing box, the bottom ends of the rotating rods rotate through the bottom of the mounting cavity, the driving gear is located inside the mounting cavity, the bottom ends of the driven rods rotate through the bottom of the mounting cavity and are fixedly connected to the stirring blades, the driven gears are located inside the mounting cavity, and there are six driven gears in total, the driving gears are meshed with the corresponding driven gears, the driven gears are meshed with each other, and the stirring blades are staggered inside the mixing box.
[0008] Specifically, the first motor is fixedly installed on the top of the mixing box, the bottom end of the reciprocating screw rotates through the bottom of the installation cavity and is threadedly connected to the scraper, the output end of the first motor is fixedly connected to the top of the reciprocating screw, the scraper is slidably connected to the inside of the mixing box, and one end of the power rod is slidably inserted into the corresponding spiral groove.
[0009] Specifically, the opening and closing conveying mechanism includes a second motor and a material receiving plate. The output end of the second motor is fixedly connected to a crankshaft. A pressure groove is provided on the material receiving plate. The second motor is fixedly installed on the front wall of the mixing box. The material receiving plate is slidably connected to the inside of the mixing box near the bottom position, and the bottom rod of the crankshaft slides through the pressure groove.
[0010] The present invention also provides a conveying method applicable to a low-energy consumption blast furnace coke and ore trough dust mixing and energy-saving conveying device, comprising the following steps: Step 1: Connect the ash discharge pipe to the connecting pipe of the mixer, and then transport the dust removed from the coke trough and the dust removed from the ore trough to the inside of the mixing box; Step 2: Start the first motor to enable the mixing mechanism to pre-mix the ash during the conveying process; Step 3: Start the second motor to enable the opening and closing conveying mechanism to convey the premixed coke trough dust removal ash and ore trough dust removal ash to the interior of the mixer through the ash discharge pipe.
[0011] Beneficial effects of the present invention: 1. The dust ash produced by the coke trough and the ore trough is transported through a closed conveying pipe. The dust ash produced by the coke trough and the ore trough will be collected by the conveying pipe into the mixing box during the process of being transported to the mixer. Then, under the coordinated operation of various components of the mixing box, the multiple stirring blades arranged inside it can rotate in different directions, thereby carrying out a deep mixing operation on the raw materials in the mixing box. In this process, the dust ash can be fully and evenly mixed, which not only effectively stabilizes the fixed carbon content of the sintered ore, but also significantly improves the metallurgical properties of the sintered ore. Then, the premixed coke trough and ore trough dust ash can be transported to the inside of the mixer.
[0012] 2. During the mixing operation, the scraper will move up and down inside the mixing box with the cooperation of the power rod and the spiral groove, preventing a large amount of coke and ore trough dust from adhering to the inner wall of the mixing box, and avoiding the tedious situation that the staff need to frequently use external tools to clean the inside of the mixing box. The combination of mixing and cleaning achieves the purpose of reducing the energy consumption of mixing and energy-saving conveying equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The main view provided by the present invention; Figure 2 A diagram showing the connection structure between the crankshaft and the pressure-bearing groove provided by the present invention; Figure 3 A diagram showing the separation structure of the mixing box and the receiving plate provided by the present invention; Figure 4 A cross-sectional view of the material receiving box provided by the present invention; Figure 5 This is a position structure diagram of the driving gear and driven gear provided by the present invention.
[0014] In the figure: 1. Mixing box; 2. Star-shaped ash unloader; 3. Conveying pipe; 4. Ash discharge pipe; 5. Opening and closing conveying mechanism; 51. Second motor; 52. Receiving plate; 53. Crankshaft; 54. Pressure tank; 6. Mixing mechanism; 61. Mounting cavity; 62. First motor; 63. Rotating rod; 64. Spiral groove; 65. Driving gear; 66. Driven rod; 67. Stirring blade; 68. Driven gear; 69. Reciprocating screw; 601. Scraper; 602. Power rod. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-5 As shown, the present invention provides the following technical solutions: Example 1: A low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device comprises a mixing box 1, a star-shaped ash discharger 2 is fixedly connected to the bottom end of the mixing box 1, a symmetrically arranged conveying pipe 3 is fixedly connected to the mixing box 1, an ash discharge pipe 4 is fixedly connected to the output port at the bottom end of the star-shaped ash discharger 2, and an opening and closing conveying mechanism 5 is provided on the mixing box 1; The top input port of the star-shaped ash discharger 2 is connected to the bottom of the mixing box 1, and the conveying pipe 3 is connected to the mixing box 1; The opening and closing conveying mechanism 5 includes a second motor 51 and a receiving plate 52. The output end of the second motor 51 is fixedly connected to a crankshaft 53. The receiving plate 52 is provided with a pressure-bearing groove 54. The second motor 51 is fixedly mounted on the front wall of the mixing box 1. The receiving plate 52 is slidably connected to the inside of the mixing box 1 near the bottom end. The bottom rod of the crankshaft 53 slides through the pressure-bearing groove 54. When in use, the ash discharge pipeline 4 is connected with the connecting pipeline of the mixer, at this time, the coke chute dedusting ash and the ore chute dedusting ash can be respectively conveyed to the inside of the mixing box 1 through the two conveying pipelines 3, at this time, both of them will fall on the receiving plate 52 inside the mixing box 1, at this time, the coke chute dedusting ash and the ore chute dedusting ash will be preliminarily mixed after falling on the receiving plate 52, at this time, the second motor 51 and the star-shaped ash discharger 2 are started, the rotation of the output end of the second motor 51 will drive the rotation of the crankshaft 53, the rotation of the crankshaft 53 will extrude the inner wall of the pressure bearing groove 54, the pressure bearing groove 54 will be pressed to drive the receiving plate 52 to move linearly in the direction of the rotation of the crankshaft 53, when the receiving plate 52 moves, the coke chute dedusting ash and the ore chute dedusting ash on the receiving plate 52 will all fall to the inside bottom end of the mixing box 1, the star-shaped ash discharger 2 will discharge the coke chute dedusting ash and the ore chute dedusting ash in the mixing box 1 to the inside of the ash discharge pipeline 4, and then the pre-mixed coke chute dedusting ash and ore chute dedusting ash can be conveyed to the inside of the mixer and mixed with other materials through the ash discharge pipeline 4 and the external power machinery, when the crankshaft 53 rotates back to the initial angle, the receiving plate 52 will also return to the original position.
[0016] In the technical scheme, the mixing mechanism 6 for pre-mixing the coke chute dedusting ash and the ore chute dedusting ash is arranged on the mixing box 1, the mixing mechanism 6 includes the installation cavity 61 and the first motor 62, the two rotating rods 63 are rotatably connected in the installation cavity 61, the helical grooves 64 are formed in the rotating rods 63, the driving gears 65 are fixedly connected to the top ends of the rotating rods 63, the plurality of driven rods 66 are rotatably connected in the installation cavity 61, the stirring blades 67 are fixedly connected to the driven rods 66, the driven gears 68 are fixedly connected to the top ends of the driven rods 66, the reciprocating screw rod 69 is rotatably connected to the middle position of the installation cavity 61, the scraper 601 is threadedly connected to the reciprocating screw rod 69, and the two power rods 602 are fixedly connected to the scraper 601. The installation cavity 61 is formed in the inside top end of the mixing box 1, the bottom ends of the rotating rods 63 are rotatably penetrated through the bottom of the installation cavity 61, the driving gears 65 are located in the inside of the installation cavity 61, the bottom ends of the driven rods 66 are rotatably penetrated through the bottom of the installation cavity 61 and are fixedly connected with the stirring blades 67, the driven gears 68 are located in the inside of the installation cavity 61, the driven gears 68 are six in total, the driving gears 65 are meshingly connected with the corresponding driven gears 68, the driven gears 68 are meshingly connected with each other, the stirring blades 67 are staggered in the inside of the mixing box 1, the first motor 62 is fixedly installed at the top end of the mixing box 1, the bottom end of the reciprocating screw rod 69 is rotatably penetrated through the bottom of the installation cavity 61 and is threadedly connected with the scraper 601, the output end of the first motor 62 is fixedly connected with the top end of the reciprocating screw rod 69, the scraper 601 is slidably connected in the inside of the mixing box 1, and one end of each of the power rods 602 is slidably inserted in the corresponding helical groove 64. When the coke channel dust and the mineral channel dust fall into the mixing box 1, the first motor 62 can be started, the reciprocating screw rod 69 is driven to rotate, the reciprocating screw rod 69 drives the scraper 601 to move upwards, the scraper 601 drives the two power rods 602 to move upwards, the power rods 602 extrude the inner wall of the spiral groove 64, at this time, the spiral groove 64 is pressed to make the rotating rod 63 rotate, the rotating rod 63 drives the driving gear 65 to rotate, the driving gear 65 drives the corresponding driven gear 68 to rotate, the driven gear 68 drives the remaining driven gears 68 to rotate, the driven gear 68 drives the driven rod 66 to rotate, and the driven rod 66 drives the stirring blade 67 to rotate, at this time, the mutually staggered stirring blades 67 can stir the coke channel dust and the mineral channel dust in the mixing box 1 in different directions, so that the coke channel dust and the mineral channel dust are fully premixed during conveying, and the scraper 601 can scrape the inner wall of the mixing box 1 during upward movement, so that the inner wall of the mixing box 1 is not contaminated by too much residue during premixing, the simultaneous operation of the two can reduce energy consumption and the energy consumption of the workers.
[0017] The application also provides a conveying method suitable for the low-energy-consumption blast furnace coke and mineral channel dust mixing and uniform energy-saving conveying device, which comprises the following steps: Step one, the ash discharge pipeline 4 is connected with the connecting pipeline of the mixing machine, at this time, the coke channel dust and the mineral channel dust are conveyed into the mixing box 1; Step two, the first motor 62 is started to make the mixing mechanism 6 premix the ash during conveying; Step three, the second motor 51 is started to make the opening and closing conveying mechanism 5 convey the premixed coke channel dust and mineral channel dust into the mixing machine through the ash discharge pipeline 4.
Claims
1. A low-energy consumption type blast furnace coke and ore hopper dust removal ash mixing and energy-saving conveying device, comprising a mixing box (1), a star-shaped ash discharger (2) fixedly connected to the bottom end of the mixing box (1), a symmetrically arranged conveying pipe (3) fixedly connected to the mixing box (1), an ash discharge pipe (4) fixedly connected to the bottom output port of the star-shaped ash discharger (2), and an opening and closing conveying mechanism (5) provided on the mixing box (1); Its characteristics are: The mixing box (1) is provided with a mixing mechanism (6) for pre-mixing coke trough and ore trough dust removal, the mixing mechanism (6) comprising a mounting cavity (61) and a first motor (62), two rotating rods (63) are rotatably connected in the mounting cavity (61), each of the rotating rods (63) is provided with a spiral groove (64), and the top of each rotating rod (63) is fixedly connected to a driving gear (65), a plurality of driven rods (66) are rotatably connected in the mounting cavity (61), each of the driven rods (66) is fixedly connected to a stirring blade (67), and the top of each driven rod (66) is fixedly connected to a driven gear (68), a reciprocating screw rod (69) is rotatably connected at a middle position of the mounting cavity (61), a scraper (601) is threadedly connected to the reciprocating screw rod (69), and two power rods (602) are fixedly connected to the scraper (601).
2. A low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device according to claim 1, characterized in that: The top input port of the star-shaped ash discharger (2) and the bottom end of the mixing box (1) are in a through-state, and the conveying pipe (3) and the mixing box (1) are in a through-state.
3. The low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device according to claim 1 is characterized in that: The mounting cavity (61) is opened at the top of the interior of the mixing box (1), the bottom ends of the rotating rods (63) rotate and penetrate the bottom of the mounting cavity (61), the driving gear (65) is located inside the mounting cavity (61), the bottom ends of the driven rods (66) rotate and penetrate the bottom of the mounting cavity (61) and are fixedly connected to the stirring blades (67), the driven gears (68) are located inside the mounting cavity (61), and there are six driven gears (68) in total. The driving gears (65) are all meshed and connected with the corresponding driven gears (68), and the driven gears (68) are meshed and connected with each other. The stirring blades (67) are staggered and located inside the mixing box (1).
4. The low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device according to claim 1 is characterized in that: The first motor (62) is fixedly mounted on the top of the mixing box (1), the bottom end of the reciprocating screw (69) rotates through the bottom of the mounting cavity (61) and is threadedly connected to the scraper (601), the output end of the first motor (62) is fixedly connected to the top of the reciprocating screw (69), the scraper (601) is slidably connected to the inside of the mixing box (1), and one end of the power rod (602) is slidably inserted into the corresponding spiral groove (64).
5. The low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device according to claim 1 is characterized in that: The opening and closing conveying mechanism (5) includes a second motor (51) and a material receiving plate (52), the output end of the second motor (51) is fixedly connected to a crankshaft (53), the material receiving plate (52) is provided with a pressure groove (54), the second motor (51) is fixedly mounted on the front wall of the mixing box (1), the material receiving plate (52) is slidably connected to the inside of the mixing box (1) near the bottom end, and the bottom rod of the crankshaft (53) slides through the pressure groove (54).
6. A method for conveying a low-energy consumption type blast furnace coke and ore hopper dust mixing and energy-saving conveying device applicable to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: The ash discharge pipe (4) is connected to the connecting pipe of the mixer, and the dust removed from the coke trough and the dust removed from the ore trough are transported to the interior of the mixing box (1); Step 2: starting the first motor (62) so that the mixing mechanism (6) performs pre-mixing of the ash during the conveying process; Step 3: Start the second motor (51) to enable the opening and closing conveying mechanism (5) to convey the premixed coke trough dust removal ash and ore trough dust removal ash to the interior of the mixer through the ash discharge pipe (4).
Citation Information
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