A method for evaluating the particle size qualification rate of sintered solid fuel

Abstract

The present invention relates to a method for evaluating the particle size qualification rate of sintered solid fuel, and belongs to the field of data processing. The method comprises the following steps: S1, obtaining the incoming information of sintered solid fuel, wherein the incoming information includes the fuel type, incoming weight, and the 1mm particle size ratio; S2, setting the 1mm particle size ratio standard in the sintered solid fuel; S3, judging whether the particle size corresponding to the fuel type is qualified; S4, judging whether the overall particle size is qualified. If the overall particle size is unqualified, the qualified rate of the 1mm particle size of all solid fuels within a preset period is calculated; S5, judging whether the qualified rate is greater than the preset qualified rate standard, and executing the corresponding procurement strategy according to the judgment result. This scheme makes up for the current shortcomings in the quality evaluation of sintered solid fuel, is conducive to guiding raw material procurement, and reducing sintering costs.

Description

Technical Field

[0001] The present invention belongs to the field of data processing, and relates to a data processing method specially used for the purpose of sintering fuel procurement, and in particular to a method for evaluating the particle size qualification rate of sintered solid fuel. Background Art

[0002] The particle size of sintered solid fuel is a key parameter in processes such as combustion optimization and coke refining. It directly affects factors such as incomplete combustion heat loss and crusher energy consumption, and plays a decisive role in the sintering process, sintering materials, and sintering results. Therefore, particle size testing is typically performed before use, and appropriate proportioning is determined based on the testing results to improve sintering results.

[0003] For example, Chinese invention publication number CN112522508A discloses a method for controlling the particle size of sintered solid fuel. This method adjusts the particle size of the sintered fuel to address the mismatch between the fuel particle size and the initial particle size of the sintered mixture after adjusting the imported powder ratio, thereby achieving a stable sintering process and improving various technical and economic indicators of sintering. Chinese invention publication number CN103364315A discloses an online method and device for detecting the particle size of sintered solid fuel. This method uses computer image processing, feature extraction, and analysis to detect the particle size distribution density of the solid fuel, resolving the labor-intensive, time-consuming, and poorly real-time data quality issues inherent in manual detection.

[0004] In the above literature, there are many studies on the particle size detection methods and process control of sintered solid fuel, and the research is relatively in-depth and has achieved certain research results. However, there is a lack of evaluation of the particle size qualification rate of sintered solid fuel. At present, research in this area needs to be further improved. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method for evaluating the qualified rate of sintered solid fuel particle size, which can objectively and accurately track, measure and evaluate the particle size of sintered solid fuel entering the factory.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A method for evaluating the particle size qualification rate of sintered solid fuel comprises the following steps:

[0008] S1. Obtaining the incoming information of sintered solid fuel, including the fuel type, incoming weight, and the proportion of -1 mm particle size;

[0009] S2. Setting the proportion of -1mm particle size in sintered solid fuel;

[0010] S3. Determine whether the particle size corresponding to the fuel type is qualified;

[0011] S31. Calculate the particle size qualification evaluation ratio corresponding to the fuel type based on the -1 mm particle size ratio:

[0012] η=R / R 标

[0013] Among them, η is the particle size qualification evaluation ratio corresponding to the fuel type, R is the -1mm particle size ratio corresponding to the fuel type, and R 标 -1mm particle size ratio standard corresponding to fuel types;

[0014] S32. Determine whether the particle size of the fuel type is qualified based on η. If η≤1, the particle size of the fuel type is qualified. If η>1, the particle size of the fuel type is unqualified.

[0015] S4. Determine whether the overall particle size is qualified;

[0016] Specifically include:

[0017] S41. Calculate the qualification evaluation ratio η of all solid fuels with a particle size of -1 mm within the preset time. 综 ;

[0018] S42, if η 综 ≤1, the overall particle size is qualified, if η 综 >1, the overall particle size is unqualified;

[0019] S5. Calculate the qualified rate of all solid fuels with a particle size of -1 mm within a preset period;

[0020] S6. Determine whether the qualified rate § is greater than the preset qualified rate standard § 标 , when the qualified rate §<§ 标 When the qualified rate is §>§ 标 , execute corresponding procurement strategy according to the qualified rate§.

[0021] Furthermore, in S2, the proportion of -1 mm particle size in the sintered solid fuel is 30%.

[0022] Furthermore, in the S41, calculating the -1mm particle size qualification ratio of all solid fuels within a preset time specifically includes:

[0023] Calculate the cumulative proportion of all sintered solid fuels -1mm particle size within the preset period:

[0024] R 总 =q 总 / Q 总

[0025] Among them, Q 总is the total weight of all sintered solid fuels within the preset period, q 总 is the total weight of all sintered solid fuels -1mm particle size;

[0026] Q 总 =Q1+Q2+Q3+…+Q n

[0027] q 总 =q1+q2+q3+…+q n

[0028] q n =Q n *R

[0029] Among them, Q1~Q n are the weight of each type of sintered solid fuel entering the factory, q1~q n They are the weight of -1mm particle size of various types of sintered solid fuel.

[0030] Furthermore, in S5, the method for calculating the pass rate is specifically as follows:

[0031] Calculate the total weight of all single products with unqualified particle size within the preset period

[0032] Q 总 '=Q a '+Q b '+Q c '+…+Q n '

[0033] Among them, Q a '~Q n ' is the weight of the nth single product with unqualified particle size, satisfying Q a '=Q a , Q b '=Q b ',Q c '=Q c , Q n '=Q n ;

[0034] Calculate the qualified rate of all solid fuels with a particle size of -1mm within the preset period

[0035] §=1-Q 总 ' / Q 总

[0036] Among them, Q 总 ' / Q 总 Represents the failure rate of all solid fuels with a particle size of -1mm within a preset period.

[0037] Furthermore, in S5, the preset period is 7 days.

[0038] Furthermore, in said S6, said preset pass rate standard 标 is 60%.

[0039] Furthermore, in S6, the procurement strategy includes: when the qualification rate satisfies 60%≤§<70%, the total procurement volume of the next procurement cycle is controlled to be purchased at 80% of the preset normal procurement volume, and the reduced procurement volume is borne by the varieties with the highest and second highest -1mm particle size proportion values ​​(i.e. the first and second fuel varieties with the highest -1mm particle size proportion values); when 70%≤§<90%, all varieties in the batch are purchased at the preset normal procurement volume; when §≥90%, all varieties in the batch of the next procurement cycle are purchased in increments of 120% of the preset normal procurement volume.

[0040] The beneficial effects of the present invention are:

[0041] This program objectively and accurately tracks, measures, and evaluates the particle size of incoming sintering solid fuel, and implements raw material procurement strategies based on the evaluation results, thereby improving the quality of incoming sintering solid fuel and reducing sintering solid fuel consumption, which is conducive to reducing production costs.

[0042] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0044] Figure 1 The present invention is a flow chart of a method for evaluating the particle size qualification rate of sintered solid fuel. DETAILED DESCRIPTION

[0045] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0046] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0047] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0048] See also Figure 1 , is a method for evaluating the particle size qualification rate of sintered solid fuel, comprising the following steps:

[0049] S1. Obtaining the incoming information of sintered solid fuel, wherein the incoming information includes the fuel type, incoming weight, and the proportion of -1 mm particle size.

[0050] S2. Set the standard for the proportion of -1 mm particle size in sintered solid fuel.

[0051] S3. Determine whether the particle size corresponding to the fuel type is qualified.

[0052] S31. Calculate the particle size qualification evaluation ratio corresponding to the fuel type based on the -1 mm particle size ratio:

[0053] η=R / R 标

[0054] Among them, η is the particle size qualification evaluation ratio corresponding to the fuel type, R is the -1mm particle size ratio corresponding to the fuel type, and R 标 -1mm particle size ratio standard corresponding to fuel types;

[0055] S32. Determine whether the particle size of the fuel type is qualified based on η. If η≤1, the particle size of the fuel type is qualified. If η>1, the particle size of the fuel type is unqualified.

[0056] S4. Determine whether the overall particle size is qualified.

[0057] Among them, judging whether the overall particle size is qualified includes:

[0058] S41. Calculate the qualification evaluation ratio η of all solid fuels with a particle size of -1 mm within the preset time. 综 ; Specifically include:

[0059] Calculate the cumulative proportion of all sintered solid fuels -1mm particle size within the preset period:

[0060] R 总 =q 总 / Q 总

[0061] Among them, Q 总 is the total weight of all sintered solid fuels within the preset period, q 总 is the total weight of all sintered solid fuels -1mm particle size;

[0062] Q 总 =Q1+Q2+Q3+…+Q n

[0063] q 总 =q1+q2+q3+…+q n

[0064] q n =Q n *R

[0065] Among them, Q1~Q n are the weight of each type of sintered solid fuel entering the factory, q1~q n are the weight of -1mm particle size of each type of sintered solid fuel;

[0066] S42, if η 综 ≤1, the overall particle size is qualified, if η 综 >1, the overall particle size is unqualified.

[0067] S5. Calculate the qualified rate of all solid fuels with a particle size of -1mm within the preset period; take and measure the weight and mass of all sintered solid fuels of the same category under the same evaluation period and the same reference conditions. This can prevent the influence of solid fuel quality fluctuations on the qualified rate evaluation results and improve the accurate evaluation of the qualified rate of each type of solid fuel particle size.

[0068] The specific method for calculating the pass rate is:

[0069] Calculate the total weight of all single products with unqualified particle size within the preset period

[0070] Q 总 '=Q a '+Q b '+Q c '+…+Q n '

[0071] Among them, Q a '~Q n ' is the weight of the nth single product with unqualified particle size, satisfying Q a '=Q a , Q b '=Q b ',Q c '=Q c , Q n '=Q n ;

[0072] Calculate the qualified rate of all solid fuels with a particle size of -1mm within the preset period

[0073] §=1-Q 总 ' / Q 总

[0074] Among them, Q 总 ' / Q 总 Represents the failure rate of all solid fuels with a particle size of -1mm within a preset period.

[0075] S6. Determine whether the qualified rate is greater than a preset qualified rate standard. In this embodiment, the preset qualified rate standard is 标 =60%, the corresponding procurement strategy is executed according to the judgment result, specifically including: when the qualified rate §satisfies§<60%, the procurement of all varieties in this batch is suspended; when 60%≤§<70%, the total procurement volume of the next procurement cycle is controlled at 80% of the preset normal procurement volume, and the reduced procurement volume is borne by the varieties with the highest and second highest proportion of -1mm particle size; when 70%≤§<90%, all varieties in this batch are purchased at the preset normal procurement volume; when §≥90%, all varieties in the batch of the next procurement cycle are purchased in increments of 120% of the preset normal procurement volume.

[0076] In this embodiment, the weight of the solid fuels A, B, C, D, etc. entering the factory for sintering in one time unit is Q A , Q B , Q C , Q D , and the corresponding variety of -1mm particle size ratio R A 、R B 、R C 、R D Etc., see Table 1.

[0077] Table 1 Sintering solid fuel weight and particle size ratio

[0078]

[0079] Assume that the technical standard R for the proportion of 1mm particle size of sintered solid fuel is 标 ≤30%.

[0080] The sintered solid fuel particle size qualification evaluation ratio η is calculated and evaluated as follows:

[0081] Fuel A:

[0082] Q A =3300 tons, R A =11.9%, R 标 ≤30%, then η A =R A / R 标 =11.9% / 30%=0.40<1, indicating that the particle size of -1mm of this batch of fuel A is qualified;

[0083] The calculated weight of the fuel A batch at -1mm particle size is q A , satisfying the formula:

[0084] q A =Q A *R A =3300*11.9%=392.7 tons.

[0085] Fuel B:

[0086] Q B =2100 tons, R B =35.8%, R 标 ≤30%

[0087] η B =R B / R 标 =35.8% / 30%=1.20>1, indicating that the -1mm particle size of this batch of fuel B is unqualified;

[0088] The calculated weight of the fuel B batch at -1mm particle size is q B , satisfying the formula:

[0089] q B =Q B *R B =2100*35.8%=751.8 tons.

[0090] Fuel C:

[0091] Q C =1500 tons, R B =32.7%, R 标 ≤30%

[0092] η C =R C / R 标=32.7% / 30%=1.09>1, indicating that the -1mm particle size of this batch of fuel C is unqualified;

[0093] The calculated weight of the fuel C batch -1mm particle size q C , satisfying the formula:

[0094] q C =Q C *R C =1500*32.7%=490.5 tons.

[0095] Fuel D:

[0096] Q D =4600 tons, R D =15.8%, R 标 ≤30%

[0097] η D =R D / R 标 =15.8% / 30%=0.53<1, which means that the particle size of -1mm of this batch of fuel D is qualified;

[0098] The calculated weight of the fuel D batch -1mm particle size q D , satisfying the formula:

[0099] q D =Q D *R D =4600*15.8%=726.8 tons.

[0100] Calculate the total weight Q of sintered solid fuels A, B, C, and D 总 And the total weight of -1mm particle size q 总 , satisfying the formula:

[0101] Q 总 =Q A +Q B +Q C +Q D =3300+2100+1500+4600=11500 tons;

[0102] q 总 =q A +q B +q C +q D =392.7+751.8+490.5+726.8=2361.8 tons.

[0103] Calculate the cumulative proportion of all solid fuels in this batch -1mm particle size R 总 , satisfying the formula:

[0104] R 总 =q 总 / Q 总 =(2361.8 / 11500)*100%=20.5%;

[0105] Calculate the qualification evaluation value η of the -1mm particle size of all solid fuels in this batch 综 , satisfying the formula:

[0106] η 综 =R 总 / R 标 =20.5% / 30%=0.68<1, which indicates that the particle size of this batch of solid fuel-1mm is generally qualified.

[0107] Calculate the weight Q of the batch of unqualified particle size varieties B and C 总 ', satisfying the formula:

[0108] Q 总 '=Q B +Q C =2100+1500=3600 tons;

[0109] The qualified rate of -1mm particle size of all solid fuels in this batch is calculated to meet the formula:

[0110] §=1-Q 总 ' / Q 总 =1-3600 / 11500=68.7%.

[0111] Based on the above evaluation results, the qualified rate of this batch of solid fuel is 68.7%, reaching the basic target value of §≥60%. Therefore, the purchase volume of this batch in the next purchase cycle will be controlled at 80% of the preset normal purchase volume, that is, the purchase volume is Q 采 =Q 总 *80% = 11500 * 80% = 9200 tons. The reduced purchase amount is borne by variety B, which has the highest proportion of -1mm particle size. That is, the reduction is Q 减 =Q 总 -Q 采 =11500-9200=2362 tons. In this embodiment, the original purchase volume of variety B is 2100 tons, which is less than 2362 tons. The shortfall is borne by variety C, which has the second highest proportion of -1mm particle size. The purchase volume of variety C is reduced to make up 2362 tons, that is, C reduces its purchase by 262 tons.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for evaluating the particle size qualification rate of sintered solid fuel, characterized in that: The following steps are involved: S1. Obtaining the incoming information of sintered solid fuel, including the fuel type, incoming weight, and the proportion of -1 mm particle size; S2. Setting the proportion of -1mm particle size in sintered solid fuel; S3. Determine whether the particle size corresponding to the fuel type is qualified; S31. Calculate the particle size qualification evaluation ratio corresponding to the fuel type based on the -1 mm particle size ratio: n=R / R 标 Among them, η is the particle size qualification evaluation ratio corresponding to the fuel type, R is the -1mm particle size ratio corresponding to the fuel type, and R 标 -1mm particle size ratio standard corresponding to fuel types; S32. Determine whether the particle size of the fuel type is qualified based on η. If η≤1, the particle size of the fuel type is qualified. If η>1, the particle size of the fuel type is unqualified. S4. Determine whether the overall particle size is qualified; Specifically include: S41. Calculate the qualification evaluation ratio η of all solid fuels with a particle size of -1 mm within the preset time. 综 ; S42, if η 综 ≤1, the overall particle size is qualified, if η 综 >1, the overall particle size is unqualified; S5. Calculate the qualified rate of all solid fuels with a particle size of -1 mm within a preset period; S6. Determine whether the qualified rate § is greater than the preset qualified rate standard § 标 , when the qualified rate §<§ 标 When the qualified rate is §>§ 标 , implement corresponding procurement strategy according to the qualified rate§; In the above S41, calculating the -1mm particle size qualification ratio of all solid fuels within a preset time specifically includes: Calculate the cumulative proportion of all sintered solid fuels -1mm particle size within the preset period: R 总 = q 总 / Q 总 Among them, Q 总 is the total weight of all sintered solid fuels within the preset period, q 总 is the total weight of all sintered solid fuels -1mm particle size; Q 总 = Q1+ Q2+ Q3+…+Q n q 总 = q1+ q2+ q3+…+ q n q n =Q n ×R Among them, Q1~Q n are the weight of each type of sintered solid fuel entering the factory, q1~q n are the weight of -1mm particle size of each type of sintered solid fuel; In S5, the method for calculating the pass rate is specifically as follows: Calculate the total weight of all single products with unqualified particle size within the preset period Q 总 '= Q a '+ Q b '+ Q c '+…+ Q n ' Among them, Q a '~Q n ' is the weight of the nth single product with unqualified particle size, satisfying Q a ' = Q a , Q b ' = Q b ',Q c '=Q c , Q n ' = Q n ; Calculate the qualified rate of all solid fuels with a particle size of -1mm within the preset period §=1- Q 总 ' / Q 总 Among them, Q 总 ' / Q 总 Represents the unqualified rate of all solid fuels with a particle size of -1mm within the preset period; In said S6, said preset pass rate standard 标 60%; In S6, the procurement strategy includes: when the qualified rate satisfies 60%≤§<70%, the total procurement volume of the next procurement cycle is controlled at 80% of the preset normal procurement volume, and the reduced procurement volume is borne by the varieties with the highest and second highest proportion of -1mm particle size; when 70%≤§<90%, all varieties in the batch are purchased at the preset normal procurement volume; when §≥90%, all varieties in the batch of the next procurement cycle are purchased in increments of 120% of the preset normal procurement volume.

2. The method for evaluating the particle size qualification rate of sintered solid fuel according to claim 1, wherein: In the S2, the proportion of -1 mm particle size in the sintered solid fuel is 30%.

3. The method for evaluating the particle size qualification rate of sintered solid fuel according to claim 1, wherein: In S5, the preset period is 7 days.

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