Blended ore short-process treatment system and method

Abstract

The invention provides an ore blending short-process processing system and method.The ore blending short-process processing system comprises a blending batching system, a blending stockpiling system and a blending conveying system, the blending stockpiling system comprises a blending stockpiling machine and a stockpiling belt conveyor, and the batching system is arranged corresponding to the tail section of the stockpiling belt conveyor; the blending and conveying system comprises a blending ore conveying belt conveyor and a liftable hopper device, the liftable hopper device is arranged corresponding to the head section of a material receiving belt conveyor of the blending and reclaiming machine, and the blending ore conveying belt conveyor conveys ore materials to the sintering machine. Blended ore conveying and yield keeping under the condition that the blending reclaimer breaks down are achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ore raw material mixing, and particularly relates to a short process treatment system and method for mixed ore. BACKGROUND

[0002] Ore raw materials of a steel plant are often of different sources and varieties, and the components of mine products are unstable, so there are often cases of mixed types, large component and particle size fluctuations. Such cases can cause fluctuations in the quality of sintered ore and instability of the furnace condition during blast furnace smelting. Mixing of ore raw materials can provide sintering and ironmaking production with ore raw materials of stable quality, thereby improving the quality of sintered ore and improving the technical and economic indicators of blast furnace production.

[0003] The mixing operation is to uniformly distribute the ore raw materials after pre-proportioning along the length direction of the entire material pile by using a stacking device, so as to achieve a large number of layers, thin layers, and uniform layers. After a certain height of the material pile is formed through multiple layers of distribution, the material is cut along the longitudinal section of the material pile by using a material taking device, so that the ore raw materials of each layer are contained in the layer of material taken each time, and the ore raw materials of each layer are mixed with each other during the taking, so that the ore raw materials are homogenized on each section.

[0004] The mixed ore taking machine is one of the key equipment for the delivery of mixed ore, and its processing capacity is generally matched with the hourly capacity of the sintering machine. Due to the high operation rate, the failure rate is also relatively high, and the mixed ore taking machine often becomes a bottleneck for the delivery of mixed ore. The mixed ore tank is generally only enough for 4-5 hours of use, and a failure of more than 4 hours will cause the sintering machine to produce at a reduced speed or even stop, causing great economic losses. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a short process treatment system and method for mixed ore, which directly sends the pre-proportioned ore raw materials to the sintering production without the mixed ore taking machine, and simply and easily solves the problem of mixed ore transportation and production under the condition of mixed ore taking machine failure.

[0006] The embodiment of the present application is implemented as follows: The embodiment of the present application provides a short process treatment system for mixed ore, characterized in that it comprises a mixed ore proportioning system, a mixed ore stacking system and a mixed ore conveying system. The mixed ore stacking system comprises a mixed ore stacking machine and a stacking belt conveyor. The proportioning system is arranged corresponding to the tail section of the stacking belt conveyor. The mixed ore conveying system comprises a mixed ore conveying belt conveyor and a liftable hopper device. The liftable hopper device is arranged corresponding to the head section of the mixed ore taking machine receiving belt conveyor. The mixed ore conveying belt conveyor conveys the ore to the sintering machine. The mixed ore taking machine receiving belt conveyor and the mixed ore stacking machine are both arranged in the mixed ore yard.

[0007] In some alternative embodiments, the mixing and blending system comprises a plurality of ore bins arranged at intervals, and a feeder and a weighing system are arranged at the bottom of the ore bins.

[0008] In some alternative embodiments, the liftable hopper device comprises a liftable hopper and a lifting support, a vertical guide rail is arranged on the lifting support, the liftable hopper is arranged on the vertical guide rail through a sliding block, a hydraulic cylinder is arranged on the lifting support to drive the liftable hopper to move vertically along the vertical guide rail.

[0009] In some alternative embodiments, a strong mixing system is further included, the strong mixing system comprises a strong mixing machine and a reversible belt conveyor, the reversible belt conveyor is arranged in parallel with the stockpile belt conveyor, and the strong mixing machine is arranged in the discharging range of the mixing and blending stockpile machine.

[0010] In some alternative embodiments, the mixing and blending yard and the receiving belt conveyor of the mixing and blending reclaimer are two sets, and are arranged on the two sides of the stockpile belt conveyor, respectively.

[0011] In some alternative embodiments, a traveling wheel and a traveling motor are arranged at the bottom of the lifting support, and the traveling motor drives the traveling wheel to rotate to drive the horizontal displacement of the lifting support.

[0012] A processing method of a short flow processing system of mixed ore, characterized by comprising the following steps: Step one, the liftable hopper is installed at the head section of the receiving belt conveyor of the mixing and blending reclaimer, the vertical height of the liftable hopper is adjusted, the mixing and blending stockpile machine is rotated and adjusted, and the head hopper of the cantilever belt conveyor of the mixing and blending stockpile machine is aligned with the liftable hopper. Step two, the ore raw material preblended by the mixing and blending system is conveyed to the mixing and blending stockpile machine through the stockpile belt conveyor, is discharged from the head hopper of the cantilever belt conveyor of the mixing and blending stockpile machine to the liftable hopper, and is conveyed to the receiving belt conveyor of the mixing and blending reclaimer. Step three, the ore raw material is conveyed to the mixed ore conveying belt conveyor through the receiving belt conveyor of the mixing and blending reclaimer, and is directly sent to the sintering machine for production.

[0013] In some alternative embodiments, in step one, when the strong mixing machine is working, the cantilever belt conveyor of the mixing and blending stockpile machine first receives the material of the strong mixing machine, the material is mixed by the strong mixing machine, and then is conveyed to the mixed ore conveying belt conveyor through the reversible belt conveyor and is sent to the sintering machine for production.

[0014] The short flow processing system and method of mixed ore provided in the application have the following beneficial effects: the liftable hopper device is arranged to cooperate with the mixing and blending stockpile machine, under the condition of failure of the mixing and blending reclaimer, the ore raw material is directly sent to the sintering production without the mixing and blending reclaimer, and the stable production of the sintering machine is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0016] Figure 1 The planar layout of the mixed ore short flow processing system of the embodiment of the present application; Figure 2 The planar layout of the strong mixing system of the embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0019] It should be understood that the size of the serial number of each step in the embodiments does not mean the order of execution. The execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0020] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In addition, the terms "horizontal", "vertical", "overhanging" and other terms do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0022] The terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships as shown in the drawings, are used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second", and the like are used only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The features and performances of the present application are further described in detail below in combination with embodiments.

[0025] As shown in Figure 1 The present embodiment discloses a short flow treatment system for blended ore, which comprises a blending and batching system 1, a blending and stacking system, and a blending and conveying system. The blending and stacking system comprises a blending and stacking machine 2 and a stacking belt conveyor 3. The batching system is arranged corresponding to the tail section of the stacking belt conveyor. The blending and conveying system comprises a blended ore conveying belt conveyor 4 and a liftable hopper device 5. The liftable hopper device is arranged corresponding to the head section of a blended ore reclaimer receiving belt conveyor 6. The blended ore conveying belt conveyor conveys ore to a sintering machine. The blended ore reclaimer receiving belt conveyor and the blending and stacking machine are both arranged in a blending yard.

[0026] The blending and batching system comprises a plurality of ore bins arranged at intervals. A feeder and a weighing system are arranged at the bottom of each ore bin to batch ore raw materials with different compositions according to a set proportion.

[0027] Further, the liftable hopper device comprises a liftable hopper and a lifting support. A vertical guide rail is arranged on the lifting support. The liftable hopper is arranged in the vertical guide rail through a sliding block. A hydraulic cylinder is arranged on the lifting support to drive the liftable hopper to move vertically along the vertical guide rail. When the blended ore reclaimer is in normal production, the liftable hopper is lifted to avoid interfering with the normal operation of the blended ore reclaimer receiving belt conveyor. When the blended ore reclaimer fails, the liftable hopper is lowered to fall on the head section of the blended ore reclaimer receiving belt conveyor to facilitate the blended ore reclaimer receiving belt conveyor to receive material.

[0028] The above-mentioned processing method of the mixed ore short-process processing system includes the following steps: Step 1: Install the lifting funnel on the head section of the mixing and reclaiming machine's receiving belt conveyor, adjust the vertical height of the lifting funnel, rotate and adjust the mixing and stacking machine, and align the head funnel of the mixing and stacking machine's cantilever belt conveyor with the lifting funnel.

[0029] Step 2: The ore raw materials pre-batch by the mixing and batching system are transported to the mixing and stacking machine through the stacking belt conveyor, and then dropped from the head funnel of the cantilever belt conveyor of the mixing and stacking machine to the lifting funnel, and then dropped to the receiving belt conveyor of the mixing and reclaiming machine.

[0030] Step three: the ore is transported to the mixed ore conveyor belt conveyor through the mixing reclaimer receiving belt conveyor and directly sent to the sintering machine for production.

[0031] Example 1 like Figure 2 As shown, a powerful mixing system can be added between the mixing and stacking machine and the receiving belt to ensure the uniform mixing effect of the ore. The powerful mixing system includes a powerful mixer 7 and a reversible belt conveyor 8. The reversible belt conveyor is arranged in parallel with the stacking belt conveyor. The powerful mixer is installed within the material drop range of the mixing and stacking machine.

[0032] When the powerful mixer is working, the cantilever belt conveyor of the mixing and stacking machine first receives the material from the powerful mixer, mixes it evenly, and then transports it to the mixed ore conveyor belt conveyor via a reversible belt conveyor and then to the sintering machine for production. The powerful mixing action of the powerful mixer makes the material particle size more uniform and the composition more stable, which can improve the quality of the mixed ore.

[0033] Example 2 In this embodiment, there are two sets of receiving belt conveyors for the mixing material yard and the mixing material reclaimer, which are respectively arranged on both sides of the stacking belt conveyor.

[0034] The bottom of the lifting bracket is equipped with a travel wheel and a travel motor. The travel motor drives the travel wheel to rotate, driving the lifting bracket to move horizontally, so that the lifting funnel can work for the two sets of mixing and reclaiming machine receiving belt conveyors, and the mixing and stacking machine can rotate to align with the displaced lifting funnel.

[0035] The present invention directly sends the pre-batch ore raw materials to the sintering production without passing through the mixing reclaimer, thus simply and easily solving the problem of mixed ore transportation and production guarantee under the condition of the mixing reclaimer failure.

Claims

1. A short-process processing system for mixed ore, characterized in that: It includes a mixing and batching system, a mixing and stacking system and a mixing and conveying system. The mixing and stacking system includes a mixing and stacking machine and a stacking belt conveyor. The mixing system is arranged corresponding to the tail section of the stacking belt conveyor. The mixing and conveying system includes a mixing ore conveying belt conveyor and a liftable funnel device. The liftable funnel device is arranged corresponding to the head section of the mixing and reclaiming machine receiving belt conveyor. The mixing ore conveying belt conveyor transports the ore to the sintering machine. The mixing and reclaiming machine receiving belt conveyor and the mixing and stacking machine are both arranged in the mixing material yard.

2. A short-process processing system for mixed ore according to claim 1, characterized in that: The mixing and batching system comprises a plurality of ore troughs arranged at intervals, and a feeder and a weighing system are correspondingly provided at the bottom of the ore troughs.

3. A short-process processing system for mixed ore according to claim 2, characterized in that: The liftable funnel device includes a lift funnel and a lift bracket. The lift bracket is provided with a vertical guide rail. The lift funnel is configured with the vertical guide rail through a slider. The lift bracket is provided with a hydraulic cylinder to drive the lift funnel to move vertically along the vertical guide rail.

4. A short-process processing system for mixed ore according to claim 3, characterized in that: It also includes a strong mixing system, which includes a strong mixer and a reversible belt conveyor. The reversible belt conveyor is arranged in parallel with the stacking belt conveyor, and the strong mixer is installed in the dropping range of the mixing stacker.

5. A short-process processing system for mixed ore according to claim 4, characterized in that: The mixing material field and the mixing material reclaimer receiving belt conveyors are two sets, which are respectively arranged corresponding to the two sides of the stacking belt conveyor.

6. A short-process processing system for mixed ore according to claim 5, characterized in that: A travel wheel and a travel motor are provided at the bottom of the lifting bracket. The travel motor drives the travel wheel to rotate, thereby driving the lifting bracket to move horizontally.

7. The processing method of the short-process mixed ore processing system according to claim 6 is characterized in that: The steps include: Step 1: Install the lifting funnel at the head section of the mixing and reclaiming machine's receiving belt conveyor, adjust the vertical height of the lifting funnel, rotate and adjust the mixing and stacking machine, and align the head funnel of the mixing and stacking machine's cantilever belt conveyor with the lifting funnel; Step 2: The ore raw materials pre-batch by the mixing and batching system are transported to the mixing and batching machine through the stacking belt conveyor, and then dropped from the head funnel of the cantilever belt conveyor of the mixing and batching machine to the lifting funnel, and then dropped to the receiving belt conveyor of the mixing and reclaiming machine; Step three: the ore is transported to the mixed ore conveyor belt conveyor through the mixing reclaimer receiving belt conveyor and directly sent to the sintering machine for production.

8. The processing method of a short-process mixed ore processing system according to claim 7, characterized in that: In step 1, when the powerful mixer is working, the cantilever belt conveyor of the mixing and stacking machine first receives the material from the powerful mixer, mixes it through the powerful mixer, and then transports it to the mixed ore conveyor belt conveyor through the reversible belt conveyor and then to the sintering machine for production.

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