Multi-target evaluation sintering solid fuel cost performance measuring and calculating model establishing method

Abstract

The invention discloses a method for establishing a cost performance measuring and calculating model for sintering solid fuel based on multi-objective evaluation, and the method comprises the steps: calculating the sintering production consumption cost of to-be-used fuel, the sintering production cost influenced by the breaking of the to-be-used fuel, and the sintering production cost influenced by the to-be-used fuel on the consumption of a flux; the desulfurization influence cost of the use of the to-be-used fuel on sintering production and the denitration influence cost of the use of the to-be-used fuel on sintering production are compared, the fuel can be evaluated from multiple angles more comprehensively, judgment and selection can be made quickly, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cost performance calculation of solid fuel for sintering, and in particular to a method for establishing a cost performance calculation model of solid fuel for sintering with multi-objective evaluation. Background Art

[0002] Researching low-carbon, low-cost sintering technologies to achieve the synergy between low-carbon, high-efficiency production and economic benefits is currently a key focus and hot topic for steel industry professionals. Reducing sintering solid fuel consumption is a key measure for modern sintering production to reduce production costs and improve economic benefits.

[0003] In this area of ​​research, most researchers use qualitative methods to directly compare the various properties of sintered solid fuels and provide a qualitative analysis of the solid fuels. This method is not very theoretical, has a large subjective influence, and the conclusions lack certain persuasiveness. In recent years, some scholars have established various fuzzy mathematical models for the optimization of sintered solid fuel selection. These models have good scientificity, but the setting of weights is still debatable, and they require a large amount of data, making them unsuitable for use by corporate procurement departments. In order to truly reflect the actual consumption of sintered solid fuels, a simple and easy-to-use cost-effectiveness evaluation model for sintered solid fuels was explored. This invention proposed a cost-effectiveness calculation model for sintered solid fuels based on a multi-objective evaluation of cost, energy, and environmental protection. This model is easy to calculate and has important guiding significance for the optimization selection of on-site sintered solid fuels. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a method for establishing a cost-effectiveness calculation model for sintering solid fuel with multi-objective evaluation.

[0005] The technical solution adopted by the present invention is: a method for establishing a cost-effectiveness calculation model for sintering solid fuel with multi-objective evaluation, comprising the following steps:

[0006] S1. Select a fuel with known seven sub-indicators, namely, ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price including tax, as the benchmark fuel. Select the fuel to be measured as the intended fuel and calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price including tax of the intended fuel.

[0007] S2. Calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content and factory price including tax of the fuel to be used;

[0008] S3. Calculate the consumption value of the fuel to be used.

[0009] B(i)=B*Qnet / Qnet(i)

[0010] Where: B(i) is the consumption value of the fuel to be used, unit: kg / t,

[0011] B is the consumption value of the reference fuel, which is known in kg / t; Qnet is the calorific value of the reference fuel, which is known in kcal / kg; Qnet(i) is the calorific value of the fuel to be used, which is known in kcal / kg;

[0012] S4, the fuel consumption cost to be used,

[0013] Ce(i)=B(i)*Pi

[0014] Where: Ce(i) is the sintering production consumption cost of the fuel to be used, unit: yuan / ton;

[0015] Pi is the dry basis tax-inclusive ex-factory price of the fuel to be used, unit: Yuan / t;

[0016] S5. Calculation of sintering production cost based on the effect of the proposed fuel on flux consumption.

[0017] Cf(i)=Pf*PSiO2*R*Ad*B(i)

[0018] Where: Cf(i) is the sintering production cost of the effect of the proposed fuel on flux consumption, unit: yuan / ton,

[0019] Pf is the price of flux used in sintering production, unit: yuan / t,

[0020] PSiO2 is the SiO2 content in the ash of the fuel to be used, unit: Yuan / t,

[0021] R is the basicity of sintered ore, unit: times,

[0022] Ad is the ash content of the fuel to be used;

[0023] S6. Calculation of sulfur load of the proposed fuel for sintering production,

[0024] Ns(i)=Ns+(Std(i)-Std)*B(i) / 10

[0025] Where: Ns(i) is the sulfur load of the fuel to be used, unit: kg / t,

[0026] Ns is the sulfur load of the reference fuel, unit: kg / t,

[0027] Std(i) is the sulfur content of the fuel to be used,

[0028] Std is the sulfur content of the benchmark fuel;

[0029] S7. Calculation of the cost of desulfurization of sintering production by the proposed fuel.

[0030] Cds(i)=2.25*Ns(i)*Ms*βCaO*Pf / NCaO

[0031] Where: Cds(i) is the desulfurization cost of the proposed fuel used in sintering production, unit: yuan / ton;

[0032] Ns(i) is the sulfur load of the fuel to be used, unit: kg / t;

[0033] Pf is the price of flux used in sintering production, unit: yuan / t;

[0034] NCaO is the effective CaO content of the flux,

[0035] Ms is the desulfurization rate of sintering production, which is set to 90%.

[0036] βCaO is the flux CaO utilization rate, which is set at 95%;

[0037] S8. Calculation of the impact of the proposed fuel on nitrogen oxide emissions.

[0038] Assuming the nitrogen content of sintered solid fuel, sintering waste gas volume, and sintered ore output, ignoring the volatile matter of other raw material fluxes, the nitrogen oxides of the fuel are calculated based on the linear relationship between volatile matter and nitrogen oxides. Assuming that burning 1kg of coal produces 10m 3 Flue gas, the formula is:

[0039] NOx=1.63*B*(N*β+0.000938)

[0040] Among them: NOx is nitrogen oxide emissions, unit: kg,

[0041] B is the amount of coal consumed, unit: kg,

[0042] β is the conversion rate of nitrogen in the fuel, which is 35%.

[0043] N is the nitrogen content of the fuel, with coke powder taking 0.75 and anthracite taking 1.5;

[0044] S9. Calculation of ammonia consumption for denitrification of sintering flue gas.

[0045] Wa=Q*(C NO *17 / (30*10 6 )+C NO2 *17*2 / (46*10 6 ))*m

[0046] Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t;

[0047] Q is the flue gas flow rate at the inlet of the sintering reactor per ton, unit: Nm 3 / t;

[0048] C NO、C NO2 Concentration of NO and NO2 in inlet flue gas, unit: mg / Nm 3 , in general, NO accounts for NO x 95% of the total emissions, namely C NO =Nox*0.95, C NO2 =Nox*0.05;

[0049] 17, 30, and 46 are the molecular weights of NH3, NO, and NO2, respectively;

[0050] m is the denitrification efficiency, which is the target value;

[0051] S10. Calculation of the cost of ammonia consumed by fuel denitrification.

[0052] Cdn(i)=Wa*P 氨水 / 0.2

[0053] Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t,

[0054] P 氨水 is the unit price of ammonia water, unit: yuan / kg,

[0055] 0.2 means the effective content of ammonia water is 20%;

[0056] S11. Calculation of the impact of the proposed fuel on the total cost of sintering production:

[0057] Ct(i)=Ce(i)+Cb(i)+Cf(i)+Cds(i)+Cdn(i)

[0058] Ce(i) is the sintering production consumption cost of the fuel, unit: yuan / ton,

[0059] Cb(i) is the impact of fuel crushing on sintering production cost, unit: yuan / ton,

[0060] Cf(i) is the sintering production cost of the fuel's impact on flux consumption, unit: yuan / ton,

[0061] Cds(i) is the desulfurization cost of the fuel used in sintering production, unit: yuan / ton,

[0062] Cdn(i) is the cost of denitrification of sintering production by using the fuel, unit: Yuan / ton;

[0063] S12. Sort the total impact costs of sintering production for all fuels to be used. The one with the lowest calculated value is the sintering solid fuel with the best cost.

[0064] Sort the sintering production consumption costs of all the fuels to be used, and the one with the lowest calculated value is the sintering solid fuel with the best energy consumption.

[0065] All the fuels to be used are ranked by the sum of their impact on desulfurization costs and denitrification costs of sintering production. The one with the lowest sum is the sintering solid fuel with the best environmental emissions.

[0066] Furthermore, the ash content, volatile matter content, fixed carbon content and moisture content of the fuel to be used are measured and calculated in accordance with the national standard (GB / T30732-2014);

[0067] Furthermore, the calorific value of the fuel to be used is measured and calculated according to the national standard (GB / T213-2008);

[0068] Furthermore, the sulfur content of the fuel to be used is measured and calculated according to the national standard (GB / T214-2007);

[0069] Furthermore, the formula for calculating the tax-inclusive ex-factory price Pi of the fuel to be used is: Pi = (Pe + Pc - Pd) / (100% - Mt)

[0070] Where: Pe is the ex-factory price of the fuel including tax, unit: Yuan / t, Pc is the freight of the fuel including tax, unit: Yuan / t, Pd is the supplier's preferential portion of the fuel purchase, unit: Yuan / t;

[0071] Furthermore, the calculation method of Cb(i) in S11 is:

[0072] Cb(i)=Q(i)*e

[0073] Where: Q(i) is the power consumption of fuel to be used for crushing one ton, unit: kwh / t

[0074] e is the local electricity price, unit: yuan / kwh.

[0075] Beneficial effects:

[0076] 1. Comprehensively consider the impact of cost, energy consumption, and environmental emissions, and conduct a more comprehensive and accurate assessment;

[0077] 2. This method is closer to production needs and can take measures that focus on cost, energy, and environmental protection according to the focus of different stages;

[0078] 3. The calculation process is fast, which is conducive to quick decision-making. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0080] In order to more clearly understand the technical solution of the present invention, the present invention is further described below with reference to the accompanying drawings.

[0081] A method for establishing a cost-effectiveness calculation model for sintering solid fuel based on multi-objective evaluation includes the following steps:

[0082] S1. Select a fuel with known seven sub-indicators: ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price (including tax) as the benchmark fuel. Select the fuel to be measured as the intended fuel and calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price (including tax) of the intended fuel. The seven sub-indicators can be found in the purchase contract or calculated according to relevant requirements.

[0083] S2. Calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content and factory price including tax of the fuel to be used;

[0084] The benchmark is based on the current procurement contract indicators of sintering solid fuel, solid fuel consumption, solid fuel consumption costs, and the impact of fuel crushing, flux addition, desulfurization, and denitrification on sintering production costs calculated using this model;

[0085] S3. Calculate the consumption value of the fuel to be used.

[0086] B(i)=B*Qnet / Qnet(i)

[0087] Where: B(i) is the consumption value of the fuel to be used, unit: kg / t,

[0088] B is the consumption value of the benchmark fuel. The consumption value of the benchmark fuel B is known, unit: kg / t,

[0089] Qnet is the calorific value of the reference fuel, which is known in Kcal / kg. Qnet(i) is the calorific value of the fuel to be used in Kcal / kg.

[0090] Contributions to calorific value include fixed carbon, volatile matter and sulfur. After the calorific value is determined, the impact of fixed carbon, volatile matter and sulfur on solid fuel consumption is no longer considered again. Solid fuel consumption is calculated in the same proportion as the solid fuel consumption with equal calorific value.

[0091] S4, the fuel consumption cost to be used,

[0092] Ce(i)=B(i)*Pi

[0093] Where: Ce(i) is the sintering production consumption cost of the fuel to be used, unit: yuan / ton;

[0094] Pi is the dry basis tax-inclusive ex-factory price of the fuel to be used, unit: Yuan / t;

[0095] S5. Calculation of sintering production cost based on the effect of the proposed fuel on flux consumption.

[0096] Cf(i)=Pf*PSiO2*R*Ad*B(i)

[0097] Where: Cf(i) is the sintering production cost of the effect of the proposed fuel on flux consumption, unit: yuan / ton,

[0098] Pf is the price of flux used in sintering production, unit: yuan / t,

[0099] PSiO2 is the SiO2 content in the ash of the fuel to be used, unit: Yuan / t,

[0100] R is the basicity of sintered ore, unit: times,

[0101] Ad is the ash content of the fuel to be used,

[0102] The ash in sintering solid fuel not only has no benefit on the fuel calorific value, but also requires the consumption of flux to achieve the required sintering ore basicity. The impact of flux consumption on sintering production cost is calculated based on the actual flux price, SiO2 content in the ash and the target sintering ore basicity.

[0103] S6. Calculation of sulfur load of the proposed fuel for sintering production,

[0104] Ns(i)=Ns+(Std(i)-Std)*B(i) / 10

[0105] Where: Ns(i) is the sulfur load of the fuel to be used, unit: kg / t,

[0106] Ns is the sulfur load of the reference fuel, unit: kg / t,

[0107] Std(i) is the sulfur content of the fuel to be used,

[0108] Std is the sulfur content of the benchmark fuel,

[0109] Set the sulfur load of sintered ore under the reference fuel conditions, and calculate the sulfur load under the measured fuel conditions based on the sulfur content of the measured fuel;

[0110] S7. Calculate the desulfurization cost based on the effective CaO content of the flux, CaO utilization rate, sinter desulfurization rate, and flux cost. Calculate the impact of the proposed fuel on the desulfurization cost of sintering production. Cds(i) = 2.25*Ns(i)*Ms*βCaO*Pf / NCaO

[0111] Where: Cds(i) is the desulfurization cost of the proposed fuel used in sintering production, unit: yuan / ton;

[0112] Ns(i) is the sulfur load of the fuel to be used, unit: kg / t;

[0113] Pf is the price of flux used in sintering production, unit: yuan / t;

[0114] NCaO is the effective CaO content of the flux,

[0115] Ms is the desulfurization rate of sintering production, which is set to 90%.

[0116] βCaO is the flux CaO utilization rate, which is set at 95%;

[0117] S8. Calculation of the impact of the proposed fuel on nitrogen oxide emissions.

[0118] Assuming the nitrogen content of sintered solid fuel, sintering waste gas volume, and sintered ore output, ignoring the volatile matter of other raw material fluxes, the nitrogen oxides of the fuel are calculated based on the linear relationship between volatile matter and nitrogen oxides. Assuming that burning 1kg of coal produces 10m 3 Flue gas, the formula is:

[0119] NOx=1.63*B*(N*β+0.000938)

[0120] Among them: NOx is nitrogen oxide emissions, unit: kg,

[0121] B is the amount of coal consumed, unit: kg,

[0122] β is the conversion rate of nitrogen in the fuel, which is 35%.

[0123] N is the nitrogen content of the fuel, with coke powder taking 0.75 and anthracite taking 1.5;

[0124] S9. Calculation of ammonia consumption for denitrification of sintering flue gas.

[0125] Wa=Q*(C NO *17 / (30*10 6 )+C NO2 *17*2 / (46*10 6 ))*m

[0126] Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t;

[0127] Q is the flue gas flow rate at the inlet of the sintering reactor per ton, unit: Nm 3 / t;

[0128] C NO、C NO2 Concentration of NO and NO2 in inlet flue gas, unit: mg / Nm 3 , in general, NO accounts for NO x 95% of the total emissions, namely C NO =Nox*0.95, C NO2 =Nox*0.05;

[0129] 17, 30, and 46 are the molecular weights of NH3, NO, and NO2, respectively;

[0130] m is the denitrification efficiency, which is the target value;

[0131] S10. Calculation of the cost of ammonia consumed by fuel denitrification.

[0132] Cdn(i)=Wa*P 氨水 / 0.2

[0133] Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t,

[0134] P 氨水 is the unit price of ammonia water, unit: yuan / kg,

[0135] 0.2 means the effective content of ammonia water is 20%;

[0136] S11. Calculation of the impact of the proposed fuel on the total cost of sintering production:

[0137] Ct(i)=Ce(i)+Cb(i)+Cf(i)+Cds(i)+Cdn(i)

[0138] Ce(i) is the sintering production consumption cost of the fuel, unit: yuan / ton,

[0139] Cb(i) is the impact of fuel crushing on sintering production costs, unit: yuan / ton. The power consumption for crushing varies with the hardness, particle size and moisture content of sintered solid fuels. This difference is quantified based on actual production.

[0140] Cf(i) is the sintering production cost of the fuel's impact on flux consumption, unit: yuan / ton,

[0141] Cds(i) is the desulfurization cost of the fuel used in sintering production, unit: yuan / ton,

[0142] Cdn(i) is the cost of denitrification of sintering production by using the fuel, unit: Yuan / ton;

[0143] S12. Sort the total impact costs of sintering production for all fuels to be used. The one with the lowest calculated value is the sintering solid fuel with the best cost.

[0144] Sort the sintering production consumption costs of all the fuels to be used, and the one with the lowest calculated value is the sintering solid fuel with the best energy consumption.

[0145] All the fuels to be used are ranked by the sum of their impact on desulfurization costs and denitrification costs of sintering production. The one with the lowest sum is the sintering solid fuel with the best environmental emissions.

[0146] Specifically, the ash content, volatile matter content, fixed carbon content and moisture content of the fuel to be used are measured and calculated in accordance with the national standard (GB / T30732-2014);

[0147] Specifically, the calorific value of the fuel to be used is measured and calculated according to the national standard (GB / T213-2008);

[0148] Specifically, the sulfur content of the fuel to be used is measured and calculated according to the national standard (GB / T214-2007);

[0149] Specifically, the formula for calculating the tax-inclusive ex-factory price Pi of the fuel to be used is:

[0150] Pi=(Pe+Pc-Pd) / (100%-Mt)

[0151] Where: Pe is the ex-factory price of the fuel including tax, unit: Yuan / t, Pc is the freight of the fuel including tax, unit: Yuan / t, Pd is the supplier's preferential portion of the fuel purchase, unit: Yuan / t;

[0152] Specifically, the calculation method of Cb(i) in S11 is:

[0153] Cb(i)=Q(i)*e

[0154] Where: Q(i) is the power consumption of fuel to be used for crushing one ton, unit: kwh / t

[0155] e is the local electricity price, unit: yuan / kwh.

[0156] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation, characterized in that: The following steps are involved: S1. Select a fuel with known seven sub-indicators, namely, ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price including tax, as the benchmark fuel. Select the fuel to be measured as the intended fuel and calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content, and ex-factory price including tax of the intended fuel. S2. Calculate the ash content, sulfur content, volatile matter content, fixed carbon content, calorific value, moisture content and factory price including tax of the fuel to be used; S3. Calculate the consumption value of the fuel to be used. B(i)=B*Qnet / Qnet(i) Where: B(i) is the consumption value of the fuel to be used, unit: kg / t, B is the consumption value of the benchmark fuel. The consumption value of the benchmark fuel B is known, unit: kg / t, Qnet is the calorific value of the benchmark fuel. The calorific value of the benchmark fuel is known, unit: Kcal / kg. Qnet(i) is the calorific value of the fuel to be used, unit: Kcal / kg; S4, the fuel consumption cost to be used, Ce(i)=B(i)*Pi Where: Ce(i) is the sintering production consumption cost of the fuel to be used, unit: yuan / ton; Pi is the dry basis tax-inclusive ex-factory price of the fuel to be used, unit: Yuan / t; S5. Calculation of sintering production cost based on the effect of the proposed fuel on flux consumption. Cf(i)=Pf*PSiO2*R*Ad*B(i) Where: Cf(i) is the sintering production cost of the effect of the proposed fuel on flux consumption, unit: yuan / ton, Pf is the price of flux used in sintering production, unit: yuan / t, PSiO2 is the SiO2 content in the ash of the fuel to be used, unit: Yuan / t, R is the basicity of sintered ore, unit: times, Ad is the ash content of the fuel to be used; S6. Calculation of sulfur load of the proposed fuel for sintering production, Ns(i)=Ns+(Std(i)-Std)*B(i) / 10 Where: Ns(i) is the sulfur load of the fuel to be used, unit: kg / t, Ns is the sulfur load of the reference fuel, unit: kg / t, Std(i) is the sulfur content of the fuel to be used, Std is the sulfur content of the benchmark fuel; S7. Calculation of the cost of desulfurization of sintering production by the proposed fuel. Cds(i)=2.25*Ns(i)*Ms*βCaO*Pf / NCaO Where: Cds(i) is the desulfurization cost of the proposed fuel used in sintering production, unit: yuan / ton; Ns(i) is the sulfur load of the fuel to be used, unit: kg / t; Pf is the price of flux used in sintering production, unit: yuan / t; NCaO is the effective CaO content of the flux, Ms is the desulfurization rate of sintering production, which is set to 90%. βCaO is the flux CaO utilization rate, which is set at 95%; S8. Calculation of the impact of the proposed fuel on nitrogen oxide emissions. Assuming the nitrogen content of sintered solid fuel, sintering waste gas volume, and sintered ore output, ignoring the volatile matter of other raw material fluxes, the nitrogen oxides of the fuel are calculated based on the linear relationship between volatile matter and nitrogen oxides. Assuming that burning 1kg of coal produces 10m 3 Flue gas, the formula is: NOx=1.63*B*(N*β+0.000938) Among them: NOx is nitrogen oxide emissions, unit: kg, B is the amount of coal consumed, unit: kg, β is the conversion rate of nitrogen in the fuel, which is 35%. N is the nitrogen content of the fuel, with coke powder taking 0.75 and anthracite taking 1.5; S9. Calculation of ammonia consumption for denitrification of sintering flue gas. Wa=Q*(C NO *17 / (30*10 6 )+C NO2 *17*2 / (46*10 6 ))*m Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t; Q is the flue gas flow rate at the inlet of the sintering reactor per ton, unit: Nm 3 / t; C NO、C NO2 Concentration of NO and NO2 in inlet flue gas, unit: mg / Nm 3 , in general, NO accounts for NO x 95% of the total emissions, namely C NO =Nox*0.95, C NO2 =Nox*0.05; 17, 30, and 46 are the molecular weights of NH3, NO, and NO2, respectively; m is the denitrification efficiency, which is the target value; S10. Calculation of the cost of ammonia consumed by fuel denitrification. Cdn(i)=Wa*P 氨水 / 0.2 Where: Wa is the ammonia consumption per ton of sintered ore, unit: kg / t, P 氨水 is the unit price of ammonia water, unit: yuan / kg, 0.2 means the effective content of ammonia water is 20%; S11. Calculation of the impact of the proposed fuel on the total cost of sintering production: Ct(i)=Ce(i)+Cb(i)+Cf(i)+Cds(i)+Cdn(i) Ce(i) is the sintering production consumption cost of the fuel, unit: yuan / ton, Cb(i) is the impact of fuel crushing on sintering production cost, unit: yuan / ton, Cf(i) is the sintering production cost of the fuel's impact on flux consumption, unit: yuan / ton, Cds(i) is the desulfurization cost of the fuel used in sintering production, unit: yuan / ton, Cdn(i) is the cost of denitrification of sintering production by using the fuel, unit: Yuan / ton; S12. Sort the total impact costs of sintering production for all fuels to be used. The one with the lowest calculated value is the sintering solid fuel with the best cost. Sort the sintering production consumption costs of all the fuels to be used, and the one with the lowest calculated value is the sintering solid fuel with the best energy consumption. All the fuels to be used are ranked by the sum of their impact on desulfurization costs and denitrification costs of sintering production. The one with the lowest sum is the sintering solid fuel with the best environmental emissions.

2. The method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation according to claim 1, characterized in that: The four sub-indicators of the fuel to be used, namely, ash content, volatile matter content, fixed carbon content and moisture content, are measured and calculated in accordance with the national standard (GB / T30732-2014).

3. The method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation according to claim 1, characterized in that: The calorific value of the fuel to be used is measured and calculated according to the national standard (GB / T213-2008).

4. The method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation according to claim 1, characterized in that: The sulfur content of the fuel to be used is measured and calculated according to the national standard (GB / T214-2007).

5. The method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation according to claim 1, characterized in that: The calculation formula for the dry basis tax-inclusive ex-factory price Pi of the fuel to be used is: Pi=(Pe+Pc-Pd) / (100%-Mt) Among them: Pe is the ex-factory price of the fuel including tax, unit: Yuan / t, Pc is the freight of the fuel including tax, unit: Yuan / t, Pd is the supplier's preferential portion of the fuel purchase, unit: Yuan / t.

6. The method for establishing a cost-effectiveness calculation model for sintering solid fuels based on multi-objective evaluation according to claim 1, characterized in that: The calculation method of Cb(i) in S11 is: Cb(i)=Q(i)*e Where: Q(i) is the power consumption of fuel to be used for crushing one ton, unit: kwh / t e is the local electricity price, unit: yuan / kwh.

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