A method, device, equipment and medium for burdening of blended ore

Abstract

The present invention discloses a method, device, equipment and medium for proportioning blended ore, including: determining the original number of stacking layers, original material flow rate and original traveling speed corresponding to the stacking machine when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used and the preset target blending duration; determining the target material flow rate and target traveling speed according to the original material flow rate and original traveling speed, so that the original number of stacking layers increases to the target number of stacking layers; controlling the stacking machine to perform a blending operation on the raw materials to be blended according to the target material flow rate and target traveling speed, and obtaining a blended ore stack with the number of stacking layers being the target number of stacking layers. By changing the material flow rate and / or the traveling speed of the stacking machine during the stacking operation, the present invention increases the number of stacking layers, improves the quality of the blended ore, and can produce higher-quality blended ore even when using lower-quality stacking raw materials.

Description

Technical Field

[0001] The present invention relates to the field of blast furnace smelting, and particularly to a method, device, equipment and medium for proportioning blended ore. Background Art

[0002] In blast furnace smelting, sinter is an important component of blast furnace burden. The quality of sinter directly affects the output and quality of the blast furnace, and the quality of sinter directly depends on the composition and particle size of the blended ore. At present, blending and stacking is one of the effective methods for manufacturing blended ore and making the composition of the blended ore stable and the particle size uniform.

[0003] The quality of the blended ore produced by the blending and stacking method is affected by the quality of the stacking raw materials. However, due to overcapacity in the steel industry, enterprises need to reduce costs and usually use stacking raw materials of lower quality, resulting in the quality of the blended ore being affected. Therefore, how to improve the quality of the blended ore on the premise of using stacking raw materials of lower quality is an urgent problem to be solved. Summary of the Invention

[0004] Embodiments of the present application provide a method, device, equipment and medium for proportioning blended ore, solve the technical problem in the prior art that the quality of the blended ore cannot be improved based on stacking raw materials of lower quality, and achieve the technical effect of being able to improve the quality of the blended ore on the premise of using stacking raw materials of lower quality.

[0005] In a first aspect, the present application provides a method for proportioning blended ore, the method comprising:

[0006] Determine the original number of stacking layers, original material flow rate and original traveling speed corresponding to the stacking machine when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration;

[0007] Determine the target material flow rate and target traveling speed according to the original material flow rate and original traveling speed, so that the original number of stacking layers increases to the target number of stacking layers;

[0008] Control the stacking machine to perform a blending operation on the raw materials to be blended according to the target material flow rate and target traveling speed to obtain a blended ore stack with the number of stacking layers being the target number of stacking layers.

[0009] Further, determining the target material flow rate and target traveling speed according to the original material flow rate and original traveling speed, so that the original number of stacking layers increases to the target number of stacking layers, includes:

[0010] Adopt at least one of the first method and the second method to increase the original number of stacking layers to the target number of stacking layers;

[0011] Among them, the first method is: taking a material flow speed lower than the original material flow speed as the target material flow speed;

[0012] The second method is: taking a traveling speed higher than the original traveling speed as the target traveling speed.

[0013] Furthermore, based on the original material flow speed and the original traveling speed, determining the target material flow speed and the target traveling speed includes:

[0014] Based on the original material flow speed and the original traveling speed, determining the sub-material flow speed and the sub-traveling speed of the stacker during the stacking process of each layer of homogenized ore, so that the difference between the material weights of every two adjacent layers of homogenized ore is within a preset range;

[0015] Among them, the target material flow speed includes the sub-material flow speed of the stacker during the stacking process of each layer of homogenized ore; the target traveling speed includes the sub-traveling speed of the stacker during the stacking process of each layer of homogenized ore.

[0016] Furthermore, the relationship between the sub-material flow speeds corresponding to every two adjacent layers of homogenized ore includes: the sub-material flow speed corresponding to the homogenized ore in the upper layer is greater than the sub-material flow speed corresponding to the homogenized ore in the lower layer;

[0017] The relationship between the sub-traveling speeds corresponding to every two adjacent layers of homogenized ore is: the sub-traveling speed corresponding to the homogenized ore in the upper layer is less than the sub-traveling speed corresponding to the homogenized ore in the lower layer.

[0018] Furthermore, based on the original traveling speed, determining the target traveling speed includes:

[0019] Based on the original traveling speed and the belt transportation speed of the stacker, determining the target reverse traveling speed and the target forward traveling speed of the stacker; the target traveling speed includes the target reverse traveling speed and the target forward traveling speed;

[0020] Among them, the target reverse traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is opposite to the transportation direction of the feeding belt of the stacker; the target forward traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is the same as the transportation direction of the feeding belt of the stacker.

[0021] Furthermore, after determining the target material flow speed and the target traveling speed, the method further includes:

[0022] Determining the actual operation duration corresponding to the stacker when homogenizing the raw materials to be homogenized at the target material flow speed;

[0023] When the actual operation duration is greater than the target mixing duration, and the difference between the actual operation duration and the target mixing duration exceeds a preset difference, the target material flow rate is adjusted so that the actual operation duration corresponding to the adjusted target material flow rate satisfies at least one of the first condition and the second condition;

[0024] Wherein, the first condition includes: the adjusted actual operation duration is less than or equal to the target mixing duration;

[0025] The second condition includes: the adjusted actual operation duration is greater than the target mixing duration, and the difference between the adjusted actual operation duration and the target mixing duration does not exceed the preset difference.

[0026] In a second aspect, the present application provides a blending ore batching device, the device includes:

[0027] An original determination module, configured to determine the original stacking layer number, the original material flow rate, and the original traveling speed corresponding to the stacking machine when mixing the raw materials to be mixed according to the weight of the raw materials to be mixed, the preset conditions of the process to be used, and the preset target mixing duration;

[0028] A target determination module, configured to determine the target material flow rate and the target traveling speed according to the original material flow rate and the original traveling speed, so that the original stacking layer number is increased to the target stacking layer number;

[0029] An output module, configured to control the stacking machine to perform a mixing operation on the raw materials to be mixed according to the target material flow rate and the target traveling speed, so as to obtain a blended ore stack with the stacking layer number being the target stacking layer number.

[0030] Further, the target determination module includes:

[0031] A target determination sub-module, configured to use at least one of the first method and the second method to increase the original stacking layer number to the target stacking layer number;

[0032] Wherein, the first method is: using a material flow rate lower than the original material flow rate as the target material flow rate;

[0033] The second method is: using a traveling speed higher than the original traveling speed as the target traveling speed.

[0034] In a third aspect, the present application provides an electronic device, including:

[0035] A processor;

[0036] A memory for storing instructions executable by the processor;

[0037] Wherein, the processor is configured to execute to implement a blending ore batching method as provided in the first aspect.

[0038] Fourthly, the present application provides a non-transitory computer-readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute a method for proportioning blended ore as provided in the first aspect.

[0039] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0040] In the embodiments of the present application, by determining the original number of stacking layers, the original material flow rate, and the original traveling speed corresponding to the raw materials to be blended during blending, determining the target material flow rate and the target traveling speed, and controlling the stacker to perform the blending operation on the raw materials to be blended according to the target material flow rate and the target traveling speed, the original number of stacking layers is increased. By using the method provided in the present application, the stacking layers can be increased, thereby improving the quality of the blended ore. Furthermore, the quality of the blended ore can be improved even on the premise of using lower-quality stacking raw materials, thus improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following-described drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 Schematic flowchart of a method for proportioning blended ore provided by the present application;

[0043] Figure 2 Cross-sectional schematic diagram of the herringbone stacking process;

[0044] Figure 3 Top-view schematic diagram of the relative positions of the equipment for yard blending operation provided by the present application;

[0045] Figure 4 Schematic diagram of the relationship between the blending efficiency index and the number of stacking layers of the blended ore provided by the present application;

[0046] Figure 5 Schematic structural diagram of a device for proportioning blended ore provided by the present application;

[0047] Figure 6 Schematic structural diagram of an electronic device provided by the present application.

[0048] Reference numerals:

[0049] 1 - material pile, 2 - stacker boom, 3 - feeding belt, 4 - stacker body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] The embodiment of the present application provides a method for proportioning blended ore, which solves the technical problem in the prior art that the quality of blended ore cannot be improved based on raw materials for stockpiling with relatively low quality.

[0051] The technical solution of the embodiment of the present application for solving the above technical problem has the following general idea:

[0052] A method for proportioning blended ore, the method includes: determining the original number of stockpiling layers, the original material flow rate, and the original traveling speed corresponding to the stockpiling machine when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration; determining the target material flow rate and the target traveling speed according to the original material flow rate and the original traveling speed, so that the original number of stockpiling layers increases to the target number of stockpiling layers; controlling the stockpiling machine to perform a blending operation on the raw materials to be blended according to the target material flow rate and the target traveling speed, and obtaining a blended ore stockpile with the number of stockpiling layers being the target number of stockpiling layers.

[0053] The embodiment of the present application determines the original number of stockpiling layers, the original material flow rate, and the original traveling speed corresponding to the raw materials to be blended when blending, determines the target material flow rate and the target traveling speed, and controls the stockpiling machine to perform a blending operation on the raw materials to be blended according to the target material flow rate and the target traveling speed, so that the original number of stockpiling layers increases. By adopting the method provided by the present application, the number of stockpiling layers can be increased, thereby improving the quality of blended ore. Furthermore, it is possible to improve the quality of blended ore even on the premise of using raw materials for stockpiling with relatively low quality, and thus the production efficiency is improved.

[0054] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0055] First, it should be noted that the term "and / or" appearing in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the front and rear associated objects.

[0056] In blast furnace smelting, sinter is an important component of blast furnace burden. The quality of sinter directly affects the blast furnace condition, output, and quality. One of the important processes for producing sinter is the sintering process. In the sintering process, the component stability and particle size stability of blended ore directly affect the quality of sinter, and the method of blending and stockpiling can effectively improve the component stability and particle size stability of blended ore.

[0057] However, in the iron and steel industry, with overcapacity in steel production, in order to save costs, the structure of the blending materials used in the production of blended ore is complex, resulting in difficulty in controlling the compositional stability and particle size stability of the blended ore produced through blending and stacking, and a sharp decline in the quality of the blended ore.

[0058] With the gradual increase in the market's requirements for blast furnace smelting products, on the premise of the current poor quality of the blending materials, how to improve the quality of the blended ore is an urgent problem to be solved.

[0059] This application provides a Figure 1 blended ore batching method as shown, and the method includes steps S11 - S13.

[0060] Step S11: Determine the original stacking layer number, original material flow rate, and original traveling speed corresponding to the stacker when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration.

[0061] Step S12: Determine the target material flow rate and target traveling speed according to the original material flow rate and original traveling speed, so that the original stacking layer number increases to the target stacking layer number.

[0062] Step S13: Control the stacker to perform a blending operation on the raw materials to be blended according to the target material flow rate and target traveling speed, and obtain a blended ore stack with the stacking layer number being the target stacking layer number.

[0063] Regarding step S11, determine the original stacking layer number, original material flow rate, and original traveling speed corresponding to the stacker when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration.

[0064] The process of stacking iron-containing raw materials of different varieties in a blending facility (such as a stacker) in a stockyard (i.e., a blending site) according to a set ratio to provide sintering raw materials with stable chemical composition and reasonable particle size composition for sintering production is the blending operation.

[0065] Regarding the weight of the raw materials to be blended, it can be determined according to the actual production requirements or relevant data of the raw material incoming. Regarding the process to be used when performing a blending operation on the raw materials to be blended, it can be selected according to the conditions of the blending site and the parameters of the stacker. Among them, the conditions of the blending site can include the size of the blending site, etc., and the parameters of the stacker can include the pitching height of the boom, etc. For example, when permitted by the blending site and the stacker, the process can adopt the herringbone stacking process, as Figure 2 shown, which is a cross-sectional view of the herringbone stacking process. Regarding the target blending duration, the target blending duration is the time required for performing a blending operation on the raw materials to be blended, and can be specifically determined according to the actual production requirements.

[0066] When performing step S11, the original number of stockpiling layers, the original material flow rate, and the original traveling speed can be determined by using the prior art, or the original number of stockpiling layers, the original material flow rate, and the original traveling speed can be directly obtained from the historical blending data. The specific method can be selected according to the actual situation.

[0067] For example, the process of determining the original number of stockpiling layers, the original material flow rate, and the original traveling speed according to a certain prior art is as follows:

[0068] According to the weight of the raw materials to be blended and the preset target blending duration, the weight of the raw materials that the stacker needs to blend per unit time (i.e., the original material flow rate) can be determined. According to the original material flow rate, the rated traveling speed of the stacker (i.e., the maximum traveling speed of the stacker, including the rated forward traveling speed and the rated reverse traveling speed), and the rated transportation speed of the feeding belt on the stacker (i.e., the maximum transportation speed of the feeding belt), the original traveling speed of the stacker can be determined (or the range of the original traveling speed of the stacker can be determined, and a value within this range is taken as the original traveling speed of the stacker). According to the size of the blending site, the length of the stockpile that can be constructed by the raw materials to be blended during blending is determined; combining the length of the stockpile, the original material flow rate, and the original traveling speed, the weight of the blended ore per layer of the stockpile that can be constructed can be determined; according to the weight of the blended ore per layer and the weight of the raw materials to be blended, the original number of stockpiling layers can be determined. Among them, the feeding belt refers to the belt that sends the raw materials to be blended in the direction of the stacker, that is, the feeding belt in this embodiment includes the direction when transporting the raw materials to be blended.

[0069] Set the weight of the raw materials to be blended as 150,000 t (tons), the target blending duration as 100 h (hours), and the determined original material flow rate as 150,000 / 100 = 1,500 t / h (tons per hour).

[0070] When determining the original traveling speed of the stacker, the following information needs to be clarified first:

[0071] Since there are two situations where the traveling direction of the stacker is the same as and different from the transportation direction of the feeding belt, it will affect the material flow rate of the boom on the stacker. For example Figure 3As shown in the figure, it is set that the transportation direction of the feeding belt is from right to left (the transportation direction of the feeding belt is generally fixed). Then, when the traveling direction of the stacker is from right to left, the traveling direction of the stacker is the same as the transportation direction of the feeding belt. At this time, the material flow speed output by the upper boom of the stacker is the speed corresponding to the difference between the traveling speed of the stacker and the transportation speed of the feeding belt. For example, the rated forward traveling speed of the stacker adopted is 2000 m / h (meters per hour), and the rated transportation speed of the feeding belt is 7200 m / h. When the stacker adopts a forward traveling speed of 1000 m / h, then when the directions are the same, the effective speed of the material flow superimposed on the boom is 7200 - 1000 = 6200 m / h. According to 6200 m / h and the original material flow speed of 1500 t / h, it can be known that when the directions are the same, the stacking per meter on the blending site is 1500 t / h ÷ [7200 m / h ÷ (7200 m / h - 1000 m / h)] ÷ 1000 m / h ≈ 1.2917 t / m (that is, 1.2917 t / m, 1.2917 tons per meter).

[0072] When the traveling direction of the stacker is from left to right, the traveling direction of the stacker is opposite to the transportation direction of the feeding belt. At this time, the material flow speed output by the upper boom of the stacker is the speed corresponding to the sum of the traveling speed of the stacker and the transportation speed of the feeding belt. For example, the rated reverse traveling speed of the stacker adopted remains 2000 m / h unchanged, and the rated transportation speed of the feeding belt is 7200 m / h. When the stacker adopts a forward traveling speed of 1000 m / h, then when the directions are opposite, the effective speed of the material flow superimposed on the boom is 7200 + 1000 = 8200 m / h. According to 8200 m / h and the original material flow speed of 1500 t / h, it can be known that when the directions are opposite, the stacking per meter on the blending site is 1500 t / h ÷ [7200 m / h ÷ (7200 m / h + 1000 m / h)] ÷ 1000 m / h ≈ 1.317 t / m (that is, 1.317 t / m, 1.317 tons per meter).

[0073] It can be seen from this that if the traveling speed of the stacker remains unchanged in the two cases where the traveling direction of the stacker is the same as and different from the transportation direction of the feeding belt, it will lead to uneven thickness of the ore material mixed by the boom in the two cases. The uneven thickness will affect the number of stacking layers and thus affect the quality of the blended ore. To improve this situation, the traveling speed of the stacker is controlled to be different in the two cases, so that the material flow output by the stacker boom in the two cases is similar or the same. Therefore, the traveling speed of the stacker includes a reverse traveling speed and a forward traveling speed. The speed when the traveling direction of the stacker is opposite to the transportation direction of the feeding belt on the stacker is the reverse traveling speed; the speed when the traveling direction of the stacker is the same as the transportation direction of the feeding belt on the stacker is the forward traveling speed. The transportation speed of the feeding belt can remain unchanged or can be changed. In this embodiment, the case where the transportation speed of the feeding belt remains unchanged is taken as an example for description.

[0074] Therefore, when setting the transportation speed of the feeding belt to 7,200 m / h, the forward walking speed of the stacker can be set to 1,000 m / h, the reverse walking speed to 1,384.6 m / h, the material flow of the feeding belt to 1,500 t / h. When the stacker is moving forward, the material stacking per meter on the blending site is 1,500 t / h ÷ [7,200 m / h ÷ (7,200 m / h - 1,000 m / h)] ÷ 1,000 m / h ≈ 1.2917 t / m; when the stacker is moving backward, the material stacking per meter on the blending site is 1,500 t / h ÷ [7,200 m / h ÷ (7,200 m / h + 1,384.6 m / h)] ÷ 1,384.6 m / h ≈ 1.2917 t / m;

[0075] According to the size of the blending site, the length of the stockpile that can be constructed during the blending of the raw materials to be blended is determined to be 400 m. According to 400 m and the original material flow rate of 1,500 t / h, the weight of each layer of blended ore can be determined to be 400 * 1.2917 = 516.68 t. Considering the total weight of 150,000 t, the original number of blending layers of this stockpile can be 150,000 / 516.68 = 290 layers.

[0076] Regarding step S12, according to the original material flow rate and the original walking speed, determine the target material flow rate and the target walking speed so that the original number of stacking layers increases to the target number of stacking layers.

[0077] The inventor found in long-term blending operations that as the number of blending layers increases, the quality of the blended ore will improve. The main factors affecting the number of blending layers are the material flow rate of the stacker boom and the walking speed of the stacker (including the reverse walking speed and the forward walking speed). The specific analysis process is as follows:

[0078] The quality of the blended ore can be calculated through the quality fluctuation deviation of the blended ore (see the following formula (1)). The smaller the quality fluctuation deviation of the blended ore, the higher the quality of the blended ore; the larger the quality fluctuation deviation of the blended ore, the lower the quality of the blended ore.

[0079]

[0080] Among them, σ is the quality fluctuation deviation of the blended ore, d i is the weight ratio of each single-variety raw material participating in the blending in the blended ore, σ wi is the quality fluctuation deviation of each single-variety raw material participating in the blending, L i is the number of stacking layers of the blended ore, and n is the number of types of raw materials participating in the blending.

[0081] According to formula (1), the quality of each single-variety raw material and the number of stacking layers directly affect the quality of the blended ore. In formula (1), σ wiThe smaller the value, the better the quality of the single-variety raw material, and the more beneficial it is to the quality stability of the blended ore. If the quality conditions of each iron raw material remain unchanged, L i The larger it is, the smaller the quality fluctuation deviation σ of the blended ore, and the higher the quality of the blended ore.

[0082] Formula (1) can be replaced by an empirical formula in production (see formula (2) for details):

[0083]

[0084] Among them, σ is the quality fluctuation deviation of the blended ore, σ0 is the quality fluctuation deviation of the raw materials before blending (usually can be queried or provided by the raw material manufacturer), and L i is the number of stacking layers of the blended ore.

[0085] According to the quality fluctuation deviation of the blended ore, the blending efficiency index can be determined. The blending efficiency index is used to determine how much the uniformity of the blended ore has improved after stacking and blending. The larger the blending efficiency index M, the better the blending effect; the smaller the blending efficiency index M, the worse the blending effect, as shown in formula (3)

[0086]

[0087] Among them, M is the blending efficiency index (its value range is 0 < M < 100), σ0 is the quality fluctuation deviation of the raw materials before blending (usually can be queried or provided by the raw material manufacturer), and σ is the quality fluctuation deviation of the blended ore obtained after blending.

[0088] Combining formula (2) and formula (3), formula (4) can be obtained:

[0089]

[0090] According to formula (4), it can be seen that the number of stacking layers of the blended ore directly affects the blending efficiency index. When the stacking layer is higher (i.e., L i is larger), the blending efficiency index M is lower, which means that the blending degree of the blended ore is improved more and the quality is higher; when the stacking layer is lower, the blending efficiency index is higher, which means that the blending degree of the blended ore is improved less and the relative quality of the blended ore is lower.

[0091] Generally, different blending efficiency indexes M represent the quality level of the blended ore. As shown in Table 1, the quality level of the blended ore can be determined by referring to Table 1.

[0092] Table 1

[0093]

[0094] However, although it can be seen from Equation (4) that the larger the number of layers, the lower the mixing efficiency index M and the better the mixing quality, according to the inventor's experience, when the number of layers exceeds a certain value, the impact on the mixing efficiency index M is small. That is to say, when the number of layers exceeds a certain value, the improvement in the quality of the mixed ore is small. As Figure 4 shown, when the number of layers exceeds 500, M stabilizes at about 96% (it can be seen from Table 1 that the quality of the mixed ore is "very good"), and the improvement in the quality of the mixed ore is not obvious; when the number of layers is less than 100, with the increase in the number of layers, the quality of the mixed ore is significantly improved, and M changes exponentially from 0 to 90%.

[0095] Thus, it can be seen that effectively increasing the number of stacking layers in the mixing operation can improve the quality of the mixed ore.

[0096] The inventor found in actual production that the factors affecting the number of stacking layers include the walking speed of the stacker, the material flow speed, and the effective length of the stacking. The specific analysis process is as follows:

[0097] Assuming that the weight of each layer of stacking is equal, then the relationship between the number of stacking layers, the total weight of the raw materials to be mixed, and the weight of each layer of stacking satisfies Equation (5).

[0098] L i =Q 总 / Q 层 Equation (5)

[0099] Where, Q 层 is the weight of each layer of stacking, Q 总 is the total amount of raw materials to be mixed, and L i is the number of stacking layers of the mixed ore corresponding to the mixed raw materials to be mixed.

[0100] The weight of each layer of stacking Q 层 is related to the forward walking speed and reverse walking speed of the stacker, the effective length of the mixed ore pile, the transportation speed of the feeding belt, and the material flow speed of the stacker boom. Specifically, see Equations (6) - (7).

[0101] Q 顺层 =qA / V 顺 -qA / V 带 Equation (6)

[0102] Q 逆层 =qA / V 逆 +qA / V 带 Equation (7)

[0103] Where, Q 顺层 is the weight of each layer of the mixed ore stacked when the walking direction of the stacker is the same as the transportation direction of the feeding belt, Q 逆层is the weight of the homogenized ore per layer in the stack when the traveling direction of the stacker is opposite to the transportation direction of the feeding belt, q is the material flow rate of the boom, V 顺 is the forward traveling speed of the stacker, V 逆 is the reverse traveling speed of the stacker, V 带 is the transportation speed of the feeding belt of the stacker, and A is the effective length of the homogenized ore stockpile.

[0104] According to Formula (5), Formula (6) and Formula (7), Formula (8) can be derived:

[0105] L i = 2Q 总 / [qA(1 / V 顺 + 1 / V 逆 )] Formula (8)

[0106] It can be seen from Formula (8) that the number of stacking layers is related to four factors, which are the weight Q of the homogenized ore per layer 层 , the material flow rate q of the boom, the effective length A of the homogenized ore stockpile, and the forward traveling speed V 顺 and the reverse traveling speed V 逆 of the stacker. When Q 总 is larger, q and A are smaller, and V 顺 and V 逆 are larger, L i is larger.

[0107] It should be noted that Q 总 is generally determined by the actual weight of the raw materials to be homogenized. After determining the raw materials to be homogenized, Q 总 is generally unchanged. A is generally determined by the size of the homogenization site. After determining the homogenization site, A is generally unchanged. Therefore, when it is necessary to increase the number of layers, it can be achieved by changing q, V 顺 and V 逆 .

[0108] It can be seen that when executing step S12, it can be achieved by at least one of Method 1 and Method 2.

[0109]

Method 1

[0110] Take a material flow rate lower than the original material flow rate as the target material flow rate.

[0111] For example, when the weight of the raw materials to be mixed is 150,000 t (tons) and the target mixing duration is 100 h (hours), the determined original material flow rate is 150,000 / 100 = 1,500 t / h. A value lower than 1,500 t / h can be selected as the target material flow rate, such as 1,450 t / h, 1,300 t / h, 1,100 t / h, 1,000 t / h, etc. Theoretically, the closer the target material flow rate is to 0, the more the number of stacking layers increases, and the higher the quality of the mixed ore. However, the lower the target material flow rate, the longer the mixing duration will be, resulting in a decrease in mixing efficiency. Therefore, when selecting the target material flow rate, at least the mixing duration required needs to be considered (which will be described in detail later and will not be elaborated here).

[0112]

Method 2

[0113] Take a walking speed higher than the original walking speed as the target walking speed.

[0114] For example, the original reverse walking speed of the stacker is 1,384.6 m / h, the original forward walking speed is 1,000 m / h, and the feeding belt transportation speed is 7,200 m / h. Then, a speed higher than 1,384.6 m / h can be selected as the target reverse walking speed, such as 1,400 m / h, 1,500 m / h, 1,600 m / h, etc. Also, a speed higher than 1,000 m / h can be selected as the target forward walking speed, such as 1,100 m / h, 1,200 m / h, etc., or the final target walking speed can be determined by combining the two. It should be noted that neither the target reverse walking speed nor the target forward walking speed can exceed the rated walking speed of the stacker.

[0115] It should be noted that due to the superposition of V 顺 and V 逆 of the stacker and the V 带 of the feeding belt, it has an impact on q and the weight of each layer of stacking when the stacker stacks materials in two directions. In order to balance q and the weight of each layer of stacking when the stacker stacks materials in two directions, so that q is the same or similar when the stacker stacks materials in two directions, and the weight of each layer of stacking is the same or similar, it is necessary to determine the relationship between V 顺 、V 逆 and V 带 . V 顺 、V 逆 and V 带The relationship between them can be determined according to the following formula (9). The two sides of the equal sign in formula (9) are respectively the weight per meter of the stacking layer corresponding to the forward movement of the stacker and the weight per meter of the stacking layer corresponding to the reverse movement. After corresponding transformation of formula (9), the final formula (10) can be obtained. That is, as long as formula (10) is satisfied, then q is the same when the stacker stacks materials in two directions, and the weight of each layer of stacked materials is also the same.

[0116]

[0117]

[0118] Among them, V 原 is the original material flow velocity, V 带 is the transportation velocity of the feeding belt, V 顺 is the forward walking velocity of the stacker, V 逆 is the reverse walking velocity of the stacker.

[0119] After it is clear that the number of stacking layers can be increased through Method 1 and Method 2 to improve the blending efficiency, it is also necessary to consider whether the operation duration corresponding to the blending operation with the target walking velocity and the target material flow velocity meets the requirement of the target blending duration. That is, it is necessary to balance the relationship among the target material flow velocity, the target walking velocity, and the target blending duration during the blending operation. Specifically, the following steps S21 - S22 can be adopted:

[0120] Step S21, determine the actual operation duration corresponding to the stacker when blending the raw materials to be blended at the target material flow velocity;

[0121] Step S22, when the actual operation duration is greater than the target blending duration, and the difference between the actual operation duration and the target blending duration exceeds the preset difference, adjust the target material flow velocity so that the actual operation duration corresponding to the adjusted target material flow velocity meets at least one of the first condition and the second condition;

[0122] Among them, the first condition includes: the adjusted actual operation duration is less than or equal to the target blending duration;

[0123] The second condition includes: the adjusted actual operation duration is greater than the target blending duration, and the difference between the adjusted actual operation duration and the target blending duration does not exceed the preset difference.

[0124] In the simulation process of mixing the raw materials to be mixed according to the target material flow rate, the corresponding actual operation duration is calculated. When the actual operation duration is greater than the target mixing duration and the difference between the two exceeds the preset difference, it is considered that the actual operation duration is inappropriate, and the target material flow rate needs to be adjusted; if the actual operation duration is less than or equal to the target mixing duration, it means that the target material flow rate is appropriate and there is no need to adjust the target material flow rate, and step S13 can be continued; if the actual operation duration is greater than the target mixing duration and the difference between the two does not exceed the preset difference, it is considered that the actual operation duration is appropriate and there is no need to adjust the target material flow rate, and step S13 can be continued.

[0125] For example, the preset difference is set to 20 h, the weight of the raw materials to be mixed is 150,000 t, the target material flow rate is 900 t / h, and the corresponding actual operation duration is 150,000 / 900 = 166.7 h. If the target mixing duration is 100 h, then the difference between 166.7 h and 100 h is greater than 20 h, so it is considered that the target material flow rate is inappropriate and the target material flow rate needs to be adjusted. If the target mixing duration is 150 h, then the difference between 166.7 h and 150 h is less than 20 h, so it is considered that the target material flow rate is appropriate and step S13 is continued.

[0126] It can be seen that in this embodiment, by adjusting the target material flow rate and the target traveling speed, the number of stacking layers can be increased while ensuring the mixing efficiency, so that the mixing operation can be realized with high efficiency and high quality. In actual operation, when the production demand is biased towards high efficiency, the material flow rate and the traveling speed can be adjusted slightly to shorten the mixing duration. Relatively speaking, the quality of the mixed ore will be relatively low; when the production demand is biased towards improving the quality of the mixed ore, the material flow rate and the traveling speed can be adjusted greatly to relatively extend the mixing duration. Specifically, the weight between efficiency and mixing effect can be balanced according to the actual demand to determine the final target material flow rate, target traveling speed and actual mixing duration.

[0127] The above method reduces the material flow rate and / or increases the traveling speed of the stacker (including increasing the forward traveling speed and / or the reverse traveling speed) to achieve the purpose of increasing the number of stacking layers and finally realizing the technical effect of improving the quality of the mixed ore.

[0128] In actual operation, the target material flow rate and the target traveling speed obtained by the above method can be the average material flow rate and the average traveling speed for stacking a pile of mixed ore. That is to say, the same material flow rate and traveling speed can be used to mix each layer of the mixed ore in the mixed ore, or different material flow rates and traveling speeds can be used for each layer of the mixed ore as long as the corresponding average material flow rate and average traveling speed are the target material flow rate and the target traveling speed.

[0129] For example, in actual operation, when the blending is carried out with different material flow rates and walking speeds for each layer of the blended ore, the sub-material flow rate and sub-walking speed of the stacker during the stacking process of each layer of the blended ore can be determined according to the original material flow rate and original walking speed, so that the difference between the material weights of every two adjacent layers of the blended ore is within a preset range. Among them, the target material flow rate includes the sub-material flow rate of the stacker during the stacking process of each layer of the blended ore; the target walking speed includes the sub-walking speed of the stacker during the stacking process of each layer of the blended ore.

[0130] The relationship between the sub-material flow rates corresponding to every two adjacent layers of the blended ore is that the sub-material flow rate corresponding to the blended ore in the upper layer is greater than the sub-material flow rate corresponding to the blended ore in the lower layer; the relationship between the sub-walking speeds corresponding to every two adjacent layers of the blended ore is that the sub-walking speed corresponding to the blended ore in the upper layer is less than the sub-walking speed corresponding to the blended ore in the lower layer.

[0131] For example, the nth layer adopts a target material flow rate of 1200 t / h, a forward speed of 1200 m / h, and a reverse speed of 400 m / h, and the (n + 1)th layer adopts a target material flow rate of 1100 t / h, a forward speed of 1250 m / h, and a reverse speed of 450 m / h.

[0132] Regarding step S13, control the stacker to carry out the blending operation on the raw materials to be blended according to the target material flow rate and target walking speed, and obtain a blended ore stack with the number of stacking layers being the target number of stacking layers.

[0133] Carrying out the blending operation according to the material flow rate and walking speed determined in step S12 can effectively increase the number of blending layers, and thus improve the quality of the blended ore. For example, the original number of blending layers is 50 layers. After the operation of step S12, the number of blending layers can be increased to 400 layers, and the corresponding blending efficiency index M can be increased by 9.3% (which can be calculated using formula (4)); the original number of blending layers is 300 layers. After the operation of step S12, the number of blending layers can be increased to 400 layers, and the corresponding blending efficiency index M can be increased by 0.8%.

[0134] In summary, in this embodiment, by determining the original number of stacking layers, original material flow rate, and original walking speed of the raw materials to be blended, determining the target material flow rate, target walking speed, and target number of stacking layers, and carrying out the blending operation on the raw materials to be blended at the target material flow rate and target walking speed, the original number of stacking layers is increased to the target number of stacking layers, and the quality of the blended ore is improved. That is to say, in this embodiment, by increasing the walking speed of the stacker and / or reducing the material flow rate, the number of stacking layers of the blended ore can be increased, thereby increasing the blending efficiency index, that is, improving the quality of the blended ore, and enabling the stockyard to produce relatively higher-quality blended ore even when using lower-quality mixed transportation ore raw materials.

[0135] Now, taking the blending process adopted in a certain stockyard as an example, steps S11 - S13 will be described. (To distinguish from the above steps, the subsequent description will use the names of steps 1 - step 3).

[0136] Step 1, the total weight of the stockpiles to be blended is 5000 tons. The stockpiles are evenly divided into 4 piles, with each pile being 1250 tons. According to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration, the original forward speed of the blending stacker is determined to be 18.486 m / min, and the original reverse speed of the stacker is 26.718 m / min. The original material flow rate is 1700 t / h for all, and the original number of stacking layers (the sum of the layers of the 4 piles) is 436 layers.

[0137] Step 2, it is determined that the material flow rates of each pile are reduced to 1200 t / h, 1500 t / h, 1600 t / h, and 1600 t / h respectively. It is determined that the forward speed of the blending stacker is increased to 21.89 m / min, and the reverse speed of the stacker is increased to 34.48 m / min.

[0138] Step 3, the stacking operation is carried out in the order of 1200 t / h, 1500 t / h, 1600 t / h, and 1600 t / h at a forward speed of 21.89 m / min and a reverse speed of 34.48 m / min of the blending stacker, obtaining the number of stacking layers of the stockpile as 487 layers, and the blending efficiency is increased by approximately 0.26%.

[0139] Based on the same inventive concept, the present application provides a blending ore batching device as shown in Figure 5 The device includes:

[0140] An original determination module 51, configured to determine the original number of stacking layers, the original material flow rate, and the original traveling speed of the stacker when blending the raw materials to be blended according to the weight of the raw materials to be blended, the preset conditions of the process to be used, and the preset target blending duration;

[0141] A target determination module 52, configured to determine the target material flow rate and the target traveling speed according to the original material flow rate and the original traveling speed, so that the original number of stacking layers is increased to the target number of stacking layers;

[0142] An output module 53, configured to control the stacker to perform a blending operation on the raw materials to be blended according to the target material flow rate and the target traveling speed, obtaining a blended ore stockpile with the number of stacking layers being the target number of stacking layers.

[0143] Furthermore, the target determination module 52 includes:

[0144] A target determination sub-module, configured to increase the original number of stacked material layers to a target number of stacked material layers by at least one of a first method and a second method;

[0145] Wherein, the first method is: using a material flow rate lower than the original material flow rate as the target material flow rate;

[0146] The second method is: using a traveling speed higher than the original traveling speed as the target traveling speed.

[0147] Further, the target determination module 52 further includes:

[0148] A target determination sub-module, configured to determine a sub-material flow rate and a sub-traveling speed of the stacker during the stacking process of each layer of homogenized ore according to the original material flow rate and the original traveling speed, so that the difference between the material weights of every two adjacent layers of homogenized ore is within a preset range;

[0149] Wherein, the target material flow rate includes the sub-material flow rate of the stacker during the stacking process of each layer of homogenized ore; the target traveling speed includes the sub-traveling speed of the stacker during the stacking process of each layer of homogenized ore.

[0150] Further, the relationship between the sub-material flow rates corresponding to every two adjacent layers of homogenized ore is: the sub-material flow rate corresponding to the upper layer of homogenized ore is greater than the sub-material flow rate corresponding to the lower layer of homogenized ore;

[0151] The relationship between the sub-traveling speeds corresponding to every two adjacent layers of homogenized ore is: the sub-traveling speed corresponding to the upper layer of homogenized ore is less than the sub-traveling speed corresponding to the lower layer of homogenized ore.

[0152] Further, the target determination module 52 includes:

[0153] A target determination sub-module, configured to determine the target reverse traveling speed and the target forward traveling speed of the stacker according to the original traveling speed and the belt transportation speed of the stacker; the target traveling speed includes the target reverse traveling speed and the target forward traveling speed;

[0154] Wherein, the target reverse traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is opposite to the transportation direction of the feeding belt on the stacker; the target forward traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is the same as the transportation direction of the feeding belt on the stacker.

[0155] Further, the target determination module 52 further includes:

[0156] A target determination sub-module, configured to determine the actual operation duration corresponding to the stacker when mixing the raw materials to be mixed according to the target material flow rate;

[0157] When the actual operation duration is greater than the target mixing duration and the difference between the actual operation duration and the target mixing duration exceeds a preset difference, the target material flow rate is adjusted so that the actual operation duration corresponding to the adjusted target material flow rate satisfies at least one of the first condition and the second condition;

[0158] Wherein, the first condition includes: the adjusted actual operation duration is less than or equal to the target mixing duration;

[0159] The second condition includes: the adjusted actual operation duration is greater than the target mixing duration, and the difference between the adjusted actual operation duration and the target mixing duration does not exceed the preset difference.

[0160] Based on the same inventive concept, the present application also provides an electronic device as shown in Figure 6 which includes:

[0161] a processor 61;

[0162] a memory 62 for storing executable instructions of the processor 61;

[0163] Wherein, the processor 61 is configured to execute to implement a method for proportioning mixed ore as provided above.

[0164] Based on the same inventive concept, the present application also provides a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor 61 of the electronic device, enabling the electronic device to execute and implement a method for proportioning mixed ore as provided above.

[0165] Since the electronic device introduced in this embodiment is the electronic device used for implementing the information processing method in the embodiments of the present application, based on the information processing method introduced in the embodiments of the present application, those skilled in the art can understand the specific implementation manners and various variations of the electronic device in this embodiment, so the specific implementation of how this electronic device implements the method in the embodiments of the present application will not be described in detail here. As long as it is the electronic device used by those skilled in the art to implement the information processing method in the embodiments of the present application, it falls within the scope of protection of the present application.

[0166] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0167] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and combinations of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices produce means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0168] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0169] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0170] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0171] Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A method for proportioning blended ore, characterized in that, The method includes: Determining an original stacking layer number, an original material flow rate, and an original traveling speed corresponding to the stacker when mixing the raw materials to be mixed according to the weight of the raw materials to be mixed, the preset conditions of the process to be used, and a preset target mixing duration; Determining a target material flow rate and a target traveling speed according to the original material flow rate and the original traveling speed, so that the original stacking layer number is increased to a target stacking layer number; Controlling the stacker to perform a mixing operation on the raw materials to be mixed according to the target material flow rate and the target traveling speed, to obtain a mixed ore stack with the stacking layer number being the target stacking layer number.

2. The method according to claim 1, wherein, The determining the target material flow rate and the target traveling speed according to the original material flow rate and the original traveling speed, so that the original stacking layer number is increased to a target stacking layer number includes: Adopting at least one of a first method and a second method to increase the original stacking layer number to a target stacking layer number; Wherein, the first method is: using a material flow rate lower than the original material flow rate as the target material flow rate; The second method is: using a traveling speed higher than the original traveling speed as the target traveling speed.

3. The method according to claim 1, wherein The determining the target material flow rate and the target traveling speed according to the original material flow rate and the original traveling speed includes: Determining a sub-material flow rate and a sub-traveling speed of the stacker during the stacking process of each layer of the mixed ore according to the original material flow rate and the original traveling speed, so that the difference between the material weights of every two adjacent layers of the mixed ore is within a preset range; Wherein, the target material flow rate includes the sub-material flow rate of the stacker during the stacking process of each layer of the mixed ore; the target traveling speed includes the sub-traveling speed of the stacker during the stacking process of each layer of the mixed ore.

4. The method according to claim 3, characterized in that, The relationship between the sub-material flow rates corresponding to every two adjacent layers of the mixed ore is: the sub-material flow rate corresponding to the upper layer of the mixed ore is greater than the sub-material flow rate corresponding to the lower layer of the mixed ore; The relationship between the sub-traveling speeds corresponding to every two adjacent layers of the mixed ore is: the sub-traveling speed corresponding to the upper layer of the mixed ore is less than the sub-traveling speed corresponding to the lower layer of the mixed ore.

5. The method according to claim 1, characterized in that, The determining the target traveling speed according to the original traveling speed includes: Determining a target reverse traveling speed and a target forward traveling speed of the stacker according to the original traveling speed and the belt transportation speed of the stacker; the target traveling speed includes the target reverse traveling speed and the target forward traveling speed; Wherein, the target reverse traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is opposite to the transportation direction of the feeding belt of the stacker; the target forward traveling speed refers to the traveling speed of the stacker when the traveling direction of the stacker is the same as the transportation direction of the feeding belt of the stacker.

6. The method according to claim 1, wherein After determining the target material flow rate and the target traveling speed, the method further includes: Determining the actual operation duration corresponding to the stacker when performing the mixing operation on the raw materials to be mixed according to the target material flow rate. When the actual operation duration is greater than the target mixing duration, and the difference between the actual operation duration and the target mixing duration exceeds a preset difference, adjust the target material flow rate so that the actual operation duration corresponding to the adjusted target material flow rate satisfies at least one of the first condition and the second condition; Wherein, the first condition includes: the adjusted actual operation duration is less than or equal to the target mixing duration; The second condition includes: the adjusted actual operation duration is greater than the target mixing duration, and the difference between the adjusted actual operation duration and the target mixing duration does not exceed the preset difference.

7. A burdening device for blended ore, characterized in that, The device includes: An original determination module, configured to determine an original stacking layer number, an original material flow rate, and an original walking speed corresponding to the stacker when mixing the raw materials to be mixed according to the weight of the raw materials to be mixed, the preset conditions of the process to be used, and the preset target mixing duration; A target determination module, configured to determine a target material flow rate and a target walking speed according to the original material flow rate and the original walking speed, so that the original stacking layer number is increased to a target stacking layer number; An output module, configured to control the stacker to perform a mixing operation on the raw materials to be mixed according to the target material flow rate and the target walking speed, so as to obtain a mixed ore stack with the stacking layer number being the target stacking layer number.

8. The device according to claim 7, wherein The target determination module includes: A target determination sub-module, configured to use at least one of the first method and the second method to increase the original stacking layer number to the target stacking layer number; Wherein, the first method is: using a material flow rate lower than the original material flow rate as the target material flow rate; The second method is: using a walking speed higher than the original walking speed as the target walking speed.

9. An electronic device, characterized in that, Includes: A processor; A memory for storing instructions executable by the processor; Wherein, the processor is configured to execute to implement a method for proportioning mixed ore as described in any one of claims 1 to 6.

10. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of an electronic device, enabling the electronic device to execute and implement a method for proportioning mixed ore as described in any one of claims 1 to 6.

Images