Sintered ore supply device for blast furnace

Abstract

The utility model discloses a sintered ore supply device for a blast furnace, which is characterized in that a three-way distributor is arranged, a finished product sintered ore belt is arranged at the upper part of the feeding end of the three-way distributor, one bypass discharging end of the three-way distributor is adjacent to a sintered ore direct supply belt, and a sintered ore transfer belt is arranged below the other bypass discharging end of the three-way distributor; the sinter unloading belt extends to a movable ore leakage car located above the sinter direct supply belt, and the movable ore leakage car is movably arranged on a rail; a conveying belt penetrates through the middle lower part of the movable mine leakage car, and the upper part of the feeding end of the conveying belt is adjacently connected with a transfer belt through a funnel; according to the utility model, the head and tail positions of the blending ore heap and the fluctuation of components and indexes of the sintering ore for the blast furnace in the heap changing process can be effectively reduced, the blast furnace operation and smooth furnace condition are stabilized, and the production fluctuation of the blast furnace is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering production, in particular to a sintered ore supply device for a blast furnace. Background Art

[0002] Sintered ore is one of the main raw materials for blast furnaces. Generally, the proportion of sintered ore in the blast furnace feedstock can reach 70-80%, or even higher. Therefore, the stability of the sintered ore composition and various indicators is crucial to the smooth operation of the blast furnace. However, when using a large pile of mixed ore, the sintered ore composition and various indicators generally do not fluctuate significantly. The greatest impact on the sintered ore composition and various indicators generally occurs at the head and tail of a large pile of mixed ore, as well as during the mixed ore pile change process. Due to the influence of process and equipment stability and the placement of the mixed ore, the composition and indicators of the mixed ore at the head and tail of the pile may differ significantly from those of the mixed ore in the pile. During the mixed ore pile change process, due to changes in raw material type, process adjustments, and other uncontrollable factors, the composition and indicators of the mixed ore before and after the pile change will vary significantly. This will also cause the composition and various indicators of the sintered ore to fluctuate significantly, thereby affecting the production operation and smooth operation of the blast furnace. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a sintered ore feeding device for a blast furnace.

[0004] The utility model is realized as follows: a sintered ore feeding device for a blast furnace is characterized in that: it comprises a three-way distributor, a finished sintered ore belt is provided on the upper part of the feeding end of the three-way distributor, a bypass discharge end of the three-way distributor is adjacent to the sintered ore direct supply belt, and a sintered ore transfer belt is provided below the other bypass discharge end; the sintered ore transfer belt extends to a mobile ore leakage car located above the sintered ore direct supply belt, the mobile ore leakage car is movably arranged on a track; a conveyor belt passes through the lower part of the mobile ore leakage car, and the upper part of the feeding end of the conveyor belt is adjacent to the transfer belt through a funnel; The conveyor belt changes its running direction through three surface-increasing rollers inside the mobile ore-leaking car, and a pressure roller is provided on the conveyor belt between the feed end of the conveyor belt and the uppermost surface-increasing roller; a discharge funnel is fixed in the middle of the mobile ore-leaking car, and two discharge ports are provided in the middle and lower part of the discharge funnel across both sides of the conveyor belt, and the two discharge ports correspond to the discharge ports on both sides of the track; N receiving bins are fixed at the lower part of the mobile ore-leaking car, where N is a non-zero natural number greater than or equal to 1, and a belt scale is provided below the bottom discharge port of each receiving bin, and the belt scale is adjacent to the sintered ore direct supply belt.

[0005] Further preferably, the N receiving bins have the same capacity, and the total capacity of the N receiving bins is ≥ the amount of sintered ore used in the blast furnace for 1.0 day.

[0006] Further preferably, a plurality of limiters are provided on the track.

[0007] The advantages and technical effects of the present invention are as follows: The present invention not only achieves efficient and precise distribution of sintered ore, but also demonstrates outstanding technical effects and application advantages in many aspects. First, the device achieves flexible distribution of sintered ore through the ingenious design of a three-way distributor. The finished sintered ore belt conveys the sintered ore to the three-way distributor. Then, according to actual needs, it can be directly supplied to the sintered ore direct supply belt through the bypass discharge end, or transferred to the sintered ore transfer belt below. Secondly, the introduction of mobile ore dumping cars makes the transfer and supply of sintered ore more flexible and convenient. The mobile ore dumping cars can move freely along the track, achieving precise delivery of sintered ore. At the same time, the design of N receiving silos further improves the storage and distribution capacity of sintered ore. In addition, the belt scale installed below the discharge port at the bottom of each receiving silo achieves accurate measurement of the sintered ore. This design not only helps to monitor the supply flow of sintered ore, but also allows for timely adjustment of supply strategies to ensure the stable quality of sintered ore for blast furnaces. In summary, this utility model, through its innovative design, including a three-way distributor, mobile ore-leaking car, and belt scale, effectively reduces fluctuations in the composition of the sintered ore used in the blast furnace, both at the head and tail of the mixed ore piles and during pile changes, thereby stabilizing blast furnace operation and ensuring smooth furnace conditions. Furthermore, this device improves the efficiency and flexibility of sintered ore supply, reduces fluctuations in blast furnace production, and provides a strong guarantee for stable blast furnace operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Schematic diagram of the structure of this utility model;

[0009] Figure 2 Schematic diagram of the feeding funnel structure;

[0010] Figure 3 Schematic diagram of the unloading openings on both sides of the track;

[0011] In the figure: 1. Finished sintered ore conveyor; 2. Three-way distributor; 3. Direct supply conveyor; 4. Transfer conveyor; 5. Hopper; 6. Pressing roller; 7. Surface increasing roller; 8. Discharge hopper; 9. Mobile ore discharge car; 10. Wheel; 11. Limiter; 12. Track; 13. Receiving bin; 14. Belt scale; 15. Discharge port. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0013] See also Figure 1A sintered ore feeding device for a blast furnace comprises a three-way distributor 2, a finished sintered ore belt 1 is provided on the upper part of the feeding end of the three-way distributor 2, a bypass discharge end of the three-way distributor 2 is adjacent to the sintered ore direct supply belt 3, and a sintered ore transfer belt 4 is provided below the other bypass discharge end; the sintered ore transfer belt 4 extends to a mobile ore leakage car 9 located above the sintered ore direct supply belt 3, and the mobile ore leakage car 9 is movably arranged on a track 12; a conveyor belt passes through the lower part of the mobile ore leakage car 9, and the upper part of the feeding end of the conveyor belt is adjacent to the transfer belt 4 through a funnel 5; the conveyor belt is inside the mobile ore leakage car 9 The running direction of the conveyor belt is changed by three surface-increasing rollers 7, and a pressure roller 6 is provided on the conveyor belt between the feeding end of the conveyor belt and the uppermost surface-increasing roller 7; a discharge funnel 8 is fixed in the middle of the mobile ore-leaking car 9, and two discharge ports are provided in the middle and lower part of the discharge funnel 8 across both sides of the conveyor belt, and the two discharge ports correspond to the discharge ports 15 on both sides of the track 12; N receiving bins 13 are fixed at the lower part of the mobile ore-leaking car 9, where N is a non-zero natural number greater than or equal to 1, and a belt scale 14 is provided below the bottom discharge port of each receiving bin 13, and the belt scale 14 is adjacent to the sintered ore direct supply belt 3.

[0014] Further preferably, the N receiving bins have the same capacity, and the total capacity of the N receiving bins is ≥ the amount of sintered ore used in the blast furnace for 1.0 day.

[0015] Further preferably, a plurality of limiters 11 are provided on the track to ensure accurate positioning of each workstation.

[0016] In actual operation, preferably, the loading time of the N receiving bins is from 2.0 days or more of the remaining use time of the large pile of mixed ore to 1.0 day of the remaining use time of the large pile of mixed ore.

[0017] Preferably, the discharge time of the N receiving bins is 1.0 day or less of the remaining use time of the large pile of mixed ore.

[0018] Preferably, the time for the buffered sintered ore in the N receiving bins to be exhausted is 1.0 day or more of the time required for the new pile of mixed ore to be used.

[0019] Preferably, the total discharge volume of the N receiving bins first increases and then decreases within 1.0 day from the remaining time of the large pile of mixed ore to 1.0 day from the start of use of the new pile of mixed ore.

[0020] Preferably, the N receiving bins can discharge materials alternately or simultaneously when in use.

[0021] The method of using this utility model is as follows:

[0022] 1) When the remaining use time of the bulk mixed ore is 2.0 days or more and when the remaining use time of the bulk mixed ore is 1.0 day, the finished sintered ore shall be loaded into the receiving bin while meeting the use of blast furnace sintered ore, and the total loading amount shall reach the sintered ore amount for 1.0 day of blast furnace.

[0023] 2) When the remaining use time of the large pile of mixed ore is 1.0 day or less, the transferred sintered ore is transported to the direct supply belt through the discharge port at the lower end of the receiving silo and supplied to the blast furnace together with the direct supply sintered ore, and the total discharge capacity of the receiving silo first increases and then decreases from the remaining 1.0 day of the large pile of mixed ore to the 1.0 day when the new pile of mixed ore begins to be used.

[0024] The adoption of the above technical solution can effectively reduce the fluctuations in the composition and various indicators of the sintered ore used in the blast furnace during the positions of the head and tail of the mixed ore pile and the pile change process, stabilize the blast furnace operation and furnace conditions, and reduce blast furnace production fluctuations.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sintered ore feeding device for a blast furnace, characterized in that: The utility model comprises a three-way distributor, the upper part of the feeding end of the three-way distributor is provided with a finished sintered ore belt, a bypass discharge end of the three-way distributor is adjacent to the sintered ore direct supply belt, and the lower part of the other bypass discharge end is provided with a sintered ore transfer belt; the sintered ore transfer belt extends to a mobile ore leakage car located above the sintered ore direct supply belt, and the mobile ore leakage car is movable and arranged on a track; a conveyor belt passes through the lower part of the mobile ore leakage car, and the upper part of the feeding end of the conveyor belt is adjacent to the transfer belt through a funnel; the conveyor belt passes through three The surface increasing roller changes the running direction of the conveyor belt, and a pressure roller is provided on the conveyor belt between the feeding end of the conveyor belt and the uppermost surface increasing roller; a discharge funnel is fixed in the middle of the mobile ore leakage car, and two discharge ports are provided in the middle and lower part of the discharge funnel across both sides of the conveyor belt, and the two discharge ports correspond to the discharge ports on both sides of the track; N receiving bins are fixed at the lower part of the mobile ore leakage car, where N is a non-zero natural number greater than or equal to 1, and a belt scale is provided below the bottom discharge port of each receiving bin, and the belt scale is adjacent to the sintered ore direct supply belt.

2. The sintered ore feeding device for a blast furnace according to claim 1, characterized in that: The capacities of N receiving bins are the same, and the total capacity of the N receiving bins is ≥ the amount of sintered ore used in the blast furnace for 1.0 day.

3. The sintered ore feeding device for a blast furnace according to claim 1, characterized in that: A plurality of limiters are arranged on the track.

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