CN112430695A - Blast furnace iron-smelting method for increasing lump ore proportion - Google Patents

Abstract

The invention provides a blast furnace ironmaking method for improving lump ore proportion, which comprises the following steps: selecting a first preset weight of sinter, pellet and lump ore, proportioning and then putting the mixture into a blast furnace as an initial proportioning scheme of ore, wherein the initial proportioning scheme of the ore is A0: b0: CO, wherein A0 is the initial proportioning value of the sintered ore, B0 is the initial proportioning value of the pellet ore, and C0 is the initial proportioning value of the lump ore; carrying out blast furnace smelting according to the initial proportion of ores, and recording air inlet data, air outlet data, fuel injection data and temperature data of a blast furnace during iron making in the smelting process; obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace; and setting a first ratio correction coefficient according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace. Whether the adjustment of the lump ore proportion each time can reach the preset requirement is determined, so that the lump ore proportion can be greatly improved on the premise of ensuring the iron quality, and the generation cost of the blast furnace during iron making is reduced.

Description

Blast furnace iron-smelting method for increasing lump ore proportion

Technical Field

The invention relates to the technical field of blast furnace iron making, in particular to a blast furnace iron making method for improving lump ore proportion.

Background

At present, the iron ore used in blast furnace smelting generally has the structure of sinter ore, pellet ore and lump ore, and is influenced by market competition and resource deterioration, and the proportion of the lump ore needs to be increased in production of the blast furnace to replace artificial rich ore, particularly high-price pellet ore, so as to reduce the iron-making cost. However, the prior art does not have a good method for solving the blast furnace ironmaking method for improving the lump ore proportion.

Disclosure of Invention

In view of the above, the present invention provides a blast furnace ironmaking method for increasing lump ore ratio, and aims to solve the problem of increasing lump ore ratio and reducing blast furnace ironmaking cost during blast furnace ironmaking.

In one aspect, the invention provides a blast furnace ironmaking method for improving lump ore proportion, which comprises the following steps:

the method comprises the following steps: selecting a first preset weight of sinter, pellet and lump ore, proportioning, and putting into a blast furnace as an initial proportioning scheme of ore, wherein the initial proportioning scheme of the ore is A0: b0: CO, wherein A0 is the initial proportioning value of the sintered ore, B0 is the initial proportioning value of the pellet ore, and C0 is the initial proportioning value of the lump ore;

step two: carrying out blast furnace smelting according to the initial proportion of the ores, and recording air inlet data, air outlet data, fuel injection data and temperature data of a blast furnace during iron making in the smelting process;

step three: obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace;

step four: setting a first ratio correction coefficient E1 according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace, adjusting the initial ratio of the ore through the first ratio correction coefficient E1, recording the initial ratio C0 of the lump ore as C1 after first rising, recording the initial ratio A0 of the sintered ore as A1 after first rising or falling, recording the initial ratio B0 of the pellet ore as B1 after first falling or rising, and determining a first pre-ratio scheme A1: b1: c1, and a0+ B0+ CO ═ a1+ B1+ C1;

step five: selecting sintered ore, pellet ore and lump ore with second preset weight according to the first pre-proportioning scheme, proportioning, then putting into a blast furnace for smelting, obtaining a first slag-iron ratio D1 after secondary tapping of the blast furnace, comparing the initial slag-iron ratio D0 with the first slag-iron ratio D1, selecting the first pre-proportioning scheme for blast furnace iron making production when the comparison result meets the constraint condition, correcting the first pre-proportioning scheme when the comparison result does not meet the constraint condition, obtaining a new pre-proportioning scheme, obtaining a new slag-iron ratio result after the new pre-proportioning scheme is adopted for production, comparing the new slag-iron ratio result with the initial slag-iron ratio D0, and determining the pre-proportioning production scheme according to the comparison result.

Further, in the fifth step,

when the D1 ≦ D0, according to the first pre-proportioning scheme A1: b1: c1, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when the D1 is greater than D0, a second ratio correction coefficient E2 is set according to a ratio of the initial slag-iron ratio D0 to the first slag-iron ratio D1, E2 is D1/D0, the first ratio correction coefficient E1 is corrected by the second ratio correction coefficient E2 to obtain a third ratio correction coefficient E3, E3 is E2 × E1, the initial ratio C0 of the lump ore is adjusted by the third ratio correction coefficient E3 to obtain C2, the initial ratio a0 of the sintered ore is adjusted by the third ratio correction coefficient E3 to obtain a2, the initial ratio B0 of the pellet is adjusted by the third ratio correction coefficient E3 to obtain a second ratio B2, and a second ratio 2: b2: c2, and a0+ B0+ CO ═ a2+ B2+ C2;

after determining the second pre-proportioning scheme A2: b2: c2, selecting sintered ore, pellet ore and lump ore with third preset weight according to the second pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a second slag-iron ratio D2 after secondary tapping of the blast furnace;

when the D2 ≦ D1 and/or D2 < D0, or when D2 ≦ D0, according to the second pre-proportioning scheme A2: b2: c2, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D2 > D1, a fourth ratio correction coefficient E4 is set according to D0, D1 and D2, E4 ═ D2/D1+ D2/D0+ D1/D0+ (D2+ D1)/(D1+ D0) + (D2+ D0)/(D1+ DO) ]/5, the fifth ratio correction coefficient E5 is obtained by correcting the third ratio correction coefficient E3 by the fourth ratio correction coefficient E4, E5 is E4 × E3, the initial proportioning value C0 of the lump ore is regulated for the third time by the fifth proportioning correction coefficient E5 and is recorded as C3, the initial proportion value A0 of the sintered ore is regulated and increased or reduced for the third time through the fifth proportion correction coefficient E5 and then recorded as A3, and recording as B3 after the initial proportioning value B0 of the pellet is regulated down or regulated up for the third time through the fifth proportioning correction coefficient E5, and determining a third pre-proportioning scheme A3: b3: c3, and a0+ B0+ CO ═ A3+ B3+ C3;

upon determining the third pre-proportioning scheme A3: b3: c3, selecting a fourth preset weight of sinter ore, pellet ore and lump ore according to the third preset proportion scheme, putting the mixture into a blast furnace for smelting, and obtaining a third slag-iron ratio D3 after third tapping of the blast furnace;

when D3 ≦ D2, according to the third pre-proportioning scheme A3: b3: c3, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D3 > D2, setting a sixth ratio correction coefficient E6 according to E1, E2, E3, E4 and E5, where E6 is (E2/E1+ E3/E2+ E4/E3+ E5/E4)/4+ [ (E3-E2)/(E2-E1) + (E4-E4)/(E4-E4) ]/3, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio correction coefficient E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore B by the sixth ratio E4 to a 4B, and determining the fourth ratio of the initial ratio of the sintered ore B4 by the sixth ratio E4 to B4: b4: c4, and a4+ B4+ C4 ═ a0+ B0+ CO;

upon determining the fourth pre-proportioning scheme A4: b4: c4, selecting sintered ore, pellet ore and lump ore with fifth preset weight according to the fourth pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a fourth slag-iron ratio D4 after fourth tapping of the blast furnace;

when D4 ≦ D3, according to the fourth pre-proportioning scheme A4: b4: c4, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D4 is larger than D3, adjusting the initial proportioning value A0 of the sintered ore to be A0i, adjusting the initial proportioning value B0 of the pellet ore to be B0i, adjusting the initial proportioning value C0 of the lump ore to be C0i, and adjusting the initial proportioning scheme to be A0: b0: CO was changed to A0 i: b0 i: 1,2, 3.. n, and according to an adjusted initial proportioning scheme A0 i: b0 i: COi, the steps one-five are executed again until the D4 is not more than D3.

Further, in the fifth step, when D4 > D3, the proportioning weight matrix M0 is preset, and an initial proportioning scheme correction coefficient P0 is set according to E1, E2, E3, E4, E5 and E6, by which the initial proportioning scheme correction coefficient P0 to the initial proportioning scheme is a 0: b0: CO is adjusted, wherein the carbon dioxide is removed,

for the matching weight matrix M0, M0(M1, M2, M3, M4, M5, M6), wherein, M1 is the weight coefficient of E1, M1 ═ E1/(E1-1) + E1/E2+ E1/E3+ E1/E4+ E1/E5+ E1/E6]/6, M2 is the weight coefficient of E2, M2 ═ E2/(E2-1) + E2/E1+ E2/E3+ E3/E3 ]/6, M3 is the weight coefficient of E3 ═ E3/(E3-1) + E3/3, M3/E3 + E3/3 + E3/3 is the weight coefficient of E3+ E3/3 + E3/3, M3/3 + E3/3 is the weight coefficient of E3/3 + E3/3 +/3, M3/3 + E3/36, m5 is a weight coefficient of E5, M5 is a weight coefficient of [ E5/(E5-1) + E5/E1+ E5/E2+ E5/E3+ E5/E4+ E5/E6]/6, and M6 is E6; m6 ═ E6/(E6-1) + E6/E1+ E6/E2+ E6/E3+ E6/E4+ E6/E5 ]/6;

for the initial ratio recipe correction factor P0, P0 ═ (E1 × M1+ E2 × M2+ E3 × M3+ E4 × M4+ E5 × M5+ E6 × M6)/(M1+ M2+ M3+ M4+ M5+ M6);

the initial proportioning scheme is A0: b0: when CO was adjusted, A0 × P0 gave A0i, B0 × P0 gave B0i, C0 × P0 gave C0i, and determined as a new initial proportioning scheme A0 i: b0 i: COi.

Further, acquiring temperature data of the blast furnace in real time through an infrared in-furnace monitoring system, partitioning an infrared image, acquired by the infrared in-furnace monitoring system in real time, of the blast furnace during ironmaking when the temperature data of the blast furnace is acquired, and dividing the infrared image into an upper area, a middle area and a lower area of the blast furnace, wherein the sizes of the upper area, the middle area and the lower area are the same;

further partitioning the upper region, establishing an upper region temperature matrix S1, S1(S11, S12, S13.. S1n), wherein S11 is the temperature in the upper first partition, S12 is the temperature in the upper second partition, S13 is the temperature in the upper third partition, and S1n is the temperature in the upper nth partition;

further partitioning the middle region, and establishing a middle region temperature matrix S2, S2(S21, S22, S23.. S2n), wherein S21 is the temperature in the first partition of the middle region, S22 is the temperature in the second partition of the middle region, S23 is the temperature in the third partition of the middle region, and S2n is the temperature in the nth partition of the middle region;

further partitioning the lower zone, establishing a lower zone temperature matrix S3, S3(S31, S32, S33.. S3n), wherein S31 is the temperature in the lower first partition, S32 is the temperature in the lower second partition, S33 is the temperature in the lower third partition, and S3n is the temperature in the lower nth partition;

and establishes a weight coefficient matrix W0, W0(W1, W2, W3.. Wn) based on the temperature ratios among S1, S2, and S3, wherein, W is a first weight coefficient, W ═ S/S + S/S) [ (S + S/S)/S ], W is a second weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], W is a third weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], Wn is an nth weight coefficient, W ═ S1/S2 + S2/S3 + S1/S3 + S3/S2 + S3/S1 + S2/S1) [ (S2 + S3)/S1 ];

and respectively calculating weighted averages of the air inlet data, the air outlet data and the injected fuel data through the weight coefficient matrix W0, and setting the first ratio correction coefficient E1 according to ratios among the weighted averages of the air inlet data, the air outlet data and the injected fuel data.

Further, when the first ratio correction coefficient E1 is set according to a ratio among the weighted averages of the intake data, the outtake data, and the injected fuel data, an intake data matrix H0, an outtake data matrix F0, and an injected fuel data matrix K0 are respectively established, wherein,

for the intake data matrix H0, H0(H1, H2, H3,. Hn), H1 is the ratio of the intake air amount to the intake air temperature at the first time, H2 is the ratio of the intake air amount to the intake air temperature at the second time, H3 is the ratio of the intake air amount to the intake air temperature at the third time, and Hn is the ratio of the intake air amount to the intake air temperature at the nth time; for Hi, i in the intake air data matrix H0, 1,2,3,. n, Hi is the ratio of the intake air amount at the i-th time to the intake air temperature, Hi is the intake air amount at the i-th time/intake air temperature at the i-th time;

calculating a weighted average of the intake air data H01, H01 ═ H1 × W1+ (H1+ H2) × W2+ (H1+ H2+ H3) × W3+ ·+ (H1+ H2+ H3+ ·+ Hn)/(W1 + W2+ W3+ ·+ Wn) by the weight coefficient matrix W0;

for the outgoing air data matrix F0, F0(F1, F2, F3,. Fn), F1 is the ratio of the outgoing air quantity to the outgoing air temperature at the first moment, F2 is the ratio of the outgoing air quantity to the outgoing air temperature at the second moment, F3 is the ratio of the outgoing air quantity to the outgoing air temperature at the third moment, and Hn is the ratio of the outgoing air quantity to the outgoing air temperature at the nth moment; for Fi in the outgoing air data matrix F0, i is 1,2,3,. n, Fi is a ratio of the outgoing air amount at the i-th time to the outgoing air temperature, and Fi is the outgoing air amount at the i-th time/the outgoing air temperature at the i-th time;

calculating a weighted average F01, F01 ═ F1 × W1+ (F1+ F2) × W2+ (F1+ F2+ F3) × W3+ - + (F1+ F2+ F3+ -. + Fn)/(W1 + W2+ W3+ -. + Wn) of the outgoing air data by the weight coefficient matrix W0;

for the injection fuel data matrix K0, K (K1, K2, K3,. cndot), where K1 is a ratio of an injection fuel amount at a first time to a high furnace temperature, K2 is a ratio of an injection fuel amount at a second time to the high furnace temperature, K3 is a ratio of an injection fuel amount at a third time to the high furnace temperature, and Kn is a ratio of an injection fuel amount at an nth time to the high furnace temperature; for Ki, i is 1,2,3,. n in the injection fuel data matrix K0, where Ki is the ratio of the injection fuel amount at the ith time to the blast furnace temperature, and Fi is the injection fuel amount at the ith time/the blast furnace temperature at the ith time;

calculating a weighted average K01, K01 [ [ K1 × W1+ (K1+ K2) × W2+ (K1+ K2+ K3) × W3+ ]+ (K1+ K2+ K3+ ]. + Kn)/(W1 + W2+ W3+ ] + Wn) of the injected fuel data by the weight coefficient matrix W0;

setting the first ratio correction coefficient E1 by using the weighted average number H01 of the intake air data, the weighted average number F01 of the exhaust air data, and the weighted average number K01 of the injected fuel data, where E1 is (H01/F01+ H01/K01+ F01/K01+ F01/H01+ K01/H01+ K01/F01)/[ (H01+ F01+ K01)/(H01F 01K 01) ]. J, where J is a weighted correction coefficient.

Further, the weighting correction coefficient J is calculated through the weighting coefficient matrix W0, the air inlet data matrix H0, the air outlet data matrix F0 and the injected fuel data matrix K0; the weighted correction coefficient J is calculated according to the following formula (1):

wherein, W1 is a first weight coefficient, Wn is an nth weight coefficient, J1 is a weighted average of the difference between the ratio of the air inlet quantity to the air inlet temperature in two adjacent moments, J2 is a weighted average of the difference between the ratio of the air outlet quantity to the air outlet temperature in two adjacent moments, and J3 is a weighted average of the difference between the ratio of the blowing fuel quantity to the high furnace temperature in two adjacent moments.

Further, the weighted average J1 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following formula (2):

J1＝[(H2-H1)/(H1-1)+(H3-H2)/(H2-H1)+(H4-H3)/(H3-H2)+...+(Hn-Hn-1)/(Hn-1-Hn-2)]/[(H1-1)+(H2-H1)+(H3-H2)+...+(Hn-Hn-1)] (2)

H1-Hn are selected from the intake data matrix H0, and Hn-1 is the ratio of the intake air amount to the intake air temperature at the n-1 th moment.

Further, the weighted average J2 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following equation (3):

J2＝[(F2-F1)/(F1-1)+(F3-F2)/(F2-F1)+(F4-F3)/(F3-F2)+...+(Fn-Fn-1)/(Fn-1-Fn-2)]/[(F1-1)+(F2-F1)+(F3-F2)+...+(Fn-Fn-1)] (2)

and F1 to Fn are all selected from the air outlet data matrix F0, and Fn-1 is the ratio of the air outlet quantity to the air outlet temperature at the n-1 moment.

Further, the weighted average J3 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following equation (4):

J3＝[(K2-K1)/(K1-1)+(K3-K2)/(K2-K1)+(K4-K3)/(K3-K2)+...+(Kn-Kn-1)/(Kn-1-Kn-2)]/[(K1-1)+(K2-K1)+(K3-K2)+...+(Kn-Kn-1)] (2)

K1-Kn are all selected from the injected fuel data matrix K0, and Kn-1 is the ratio of the injected fuel quantity to the high furnace temperature at the n-1 moment.

Further, establishing a lower feeding matrix Z, Z (Z, Z, Z, T, T), wherein Z is the air intake quantity of the lower part of the blast furnace, Z is the injected fuel quantity of the lower part of the blast furnace, Z is the total heating value of the injected fuel, T is the highest temperature when the lower region is combusted, and T is the lowest temperature when the lower region is combusted, and determining a heat loss coefficient Z according to the lower feeding matrix Z, wherein Z is (Z/T + Z/T + Z/T + Z/T + Z/T + Z/T) ([ Z/(T-T) + Z (T-T) + Z (T-T) ];

determining an intake air amount Z02 and an injected fuel amount Z03 according to the relation among S1, S2 and S3 and a heat loss coefficient Z01;

the intake air amount Z02 ═ [ (S11+ S12+ S13+ ·+ S1n)/n × Z01] + [ (S21+ S22+ S23+ ·+ S2n)/n × Z01] + [ (S31+ S32+ S33+. + S3n)/n × Z01] +, wherein X is a preset intake air amount;

the injection fuel quantity Z03 is [ (S11+ S12+ S13+. + S1n)/n X Z01 ]. Y + [ (S21+ S22+ S23+. + S2n)/n X Z01 ]. Y + [ (S31+ S32+ S33+. + S3n)/n X Z01 ]. Y + Y, wherein Y is a preset injection fuel quantity.

Compared with the prior art, the method has the beneficial effects that the initial proportioning scheme is set to be A0 after the first preset weight of the sinter, the pellet and the lump ore are selected for proportioning: b0: CO, carrying out blast furnace smelting according to the initial proportion of ores, and recording air inlet data, air outlet data, fuel injection data and temperature data during blast furnace ironmaking in the smelting process; obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace; setting a first proportioning correction coefficient E1 according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace, and determining a first pre-proportioning scheme A1: b1: c1, selecting a second preset weight of sintered ore, pellet ore and lump ore according to a first pre-proportioning scheme, proportioning, then smelting in a blast furnace, obtaining a first slag-iron ratio D1 after secondary tapping in the blast furnace, comparing the initial slag-iron ratio D0 with the first slag-iron ratio D1, when the comparison result meets the constraint condition, selecting the first pre-proportioning scheme to carry out blast furnace iron making production, when the comparison result does not meet the constraint condition, correcting the first pre-proportioning scheme, obtaining a new pre-proportioning scheme, after the new pre-proportioning scheme is adopted for production, obtaining a new slag-iron ratio result, comparing the new slag-iron ratio result with the initial slag-iron ratio D0, and determining the pre-proportioning production scheme according to the comparison result. The method can be seen that after the slag-iron ratio is obtained in the initial proportioning scheme, the lump ore proportion in the original scheme is successively improved, the proportion of the sintered ore or the pellet ore is correspondingly reduced, and whether the adjustment of the lump ore proportion in each time can meet the preset requirement or not is determined through successive comparison verification, so that the lump ore proportion can be greatly improved on the premise of ensuring the iron quality, and the generation cost in blast furnace iron making is reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a flow chart of a blast furnace ironmaking method for increasing lump ore ratio according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, the present embodiment provides a blast furnace ironmaking method for increasing lump ore ratio, including the following steps:

step one, S101: determining an initial proportioning scheme as A0: b0: CO;

step two S102: carrying out blast furnace smelting according to the mixture ratio;

step three, S103: obtaining an initial slag-iron ratio D0;

step four S104: setting a correction coefficient, and adjusting an initial proportioning scheme;

step five S105: successively comparing the slag-iron ratio of the new proportioning scheme with the initial slag-iron ratio to determine an optimal proportioning scheme;

specifically, in step one S101: selecting a first preset weight of sinter, pellet and lump ore, proportioning, and putting into a blast furnace as an initial proportioning scheme of ore, wherein the initial proportioning scheme of the ore is A0: b0: CO, wherein A0 is the initial proportioning value of the sintered ore, B0 is the initial proportioning value of the pellet ore, and C0 is the initial proportioning value of the lump ore;

specifically, in step two S102: carrying out blast furnace smelting according to the initial proportion of the ores, and recording air inlet data, air outlet data, fuel injection data and temperature data of a blast furnace during iron making in the smelting process;

specifically, in step three S103: obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace;

specifically, in step four S104: setting a first ratio correction coefficient E1 according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace, adjusting the initial ratio of the ore through the first ratio correction coefficient E1, recording the initial ratio C0 of the lump ore as C1 after first rising, recording the initial ratio A0 of the sintered ore as A1 after first rising or falling, recording the initial ratio B0 of the pellet ore as B1 after first falling or rising, and determining a first pre-ratio scheme A1: b1: c1, and a0+ B0+ CO ═ a1+ B1+ C1;

specifically, in step S105, a second preset weight of sintered ore, pellet ore and lump ore is selected according to the first pre-proportioning scheme, the mixture is placed into a blast furnace for smelting, a first slag-iron ratio D1 is obtained after the blast furnace is tapped for the second time, the initial slag-iron ratio D0 is compared with the first slag-iron ratio D1, when the comparison result meets the constraint condition, the first pre-proportioning scheme is selected for blast furnace iron making production, when the comparison result does not meet the constraint condition, the first pre-proportioning scheme is corrected, a new pre-proportioning scheme is obtained, after the new pre-proportioning scheme is adopted for production, a new slag-iron ratio result is obtained, the new slag-iron ratio result is compared with the initial slag-iron ratio D0, and a pre-proportioning production scheme is determined according to the comparison result.

It can be seen that the initial proportioning scheme is set as A0 after the first preset weight of sinter, pellet and lump ore is selected for proportioning: b0: CO, carrying out blast furnace smelting according to the initial proportion of ores, and recording air inlet data, air outlet data, fuel injection data and temperature data during blast furnace ironmaking in the smelting process; obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace; setting a first proportioning correction coefficient E1 according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace, and determining a first pre-proportioning scheme A1: b1: c1, selecting a second preset weight of sintered ore, pellet ore and lump ore according to a first pre-proportioning scheme, proportioning, then smelting in a blast furnace, obtaining a first slag-iron ratio D1 after secondary tapping in the blast furnace, comparing the initial slag-iron ratio D0 with the first slag-iron ratio D1, when the comparison result meets the constraint condition, selecting the first pre-proportioning scheme to carry out blast furnace iron making production, when the comparison result does not meet the constraint condition, correcting the first pre-proportioning scheme, obtaining a new pre-proportioning scheme, after the new pre-proportioning scheme is adopted for production, obtaining a new slag-iron ratio result, comparing the new slag-iron ratio result with the initial slag-iron ratio D0, and determining the pre-proportioning production scheme according to the comparison result. The method can be seen that after the slag-iron ratio is obtained in the initial proportioning scheme, the lump ore proportion in the original scheme is successively improved, the proportion of the sintered ore or the pellet ore is correspondingly reduced, and whether the adjustment of the lump ore proportion in each time can meet the preset requirement or not is determined through successive comparison verification, so that the lump ore proportion can be greatly improved on the premise of ensuring the iron quality, and the generation cost in blast furnace iron making is reduced.

Specifically, in the above-mentioned step five S105,

when the D1 ≦ D0, according to the first pre-proportioning scheme A1: b1: c1, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when the D1 is greater than D0, a second ratio correction coefficient E2 is set according to a ratio of the initial slag-iron ratio D0 to the first slag-iron ratio D1, E2 is D1/D0, the first ratio correction coefficient E1 is corrected by the second ratio correction coefficient E2 to obtain a third ratio correction coefficient E3, E3 is E2 × E1, the initial ratio C0 of the lump ore is adjusted by the third ratio correction coefficient E3 to obtain C2, the initial ratio a0 of the sintered ore is adjusted by the third ratio correction coefficient E3 to obtain a2, the initial ratio B0 of the pellet is adjusted by the third ratio correction coefficient E3 to obtain a second ratio B2, and a second ratio 2: b2: c2, and a0+ B0+ CO ═ a2+ B2+ C2;

after determining the second pre-proportioning scheme A2: b2: c2, selecting sintered ore, pellet ore and lump ore with third preset weight according to the second pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a second slag-iron ratio D2 after secondary tapping of the blast furnace;

when the D2 ≦ D1 and/or D2 < D0, or when D2 ≦ D0, according to the second pre-proportioning scheme A2: b2: c2, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D2 > D1, a fourth ratio correction coefficient E4 is set according to D0, D1 and D2, E4 ═ D2/D1+ D2/D0+ D1/D0+ (D2+ D1)/(D1+ D0) + (D2+ D0)/(D1+ DO) ]/5, the fifth ratio correction coefficient E5 is obtained by correcting the third ratio correction coefficient E3 by the fourth ratio correction coefficient E4, E5 is E4 × E3, the initial proportioning value C0 of the lump ore is regulated for the third time by the fifth proportioning correction coefficient E5 and is recorded as C3, the initial proportion value A0 of the sintered ore is regulated and increased or reduced for the third time through the fifth proportion correction coefficient E5 and then recorded as A3, and recording as B3 after the initial proportioning value B0 of the pellet is regulated down or regulated up for the third time through the fifth proportioning correction coefficient E5, and determining a third pre-proportioning scheme A3: b3: c3, and a0+ B0+ CO ═ A3+ B3+ C3;

upon determining the third pre-proportioning scheme A3: b3: c3, selecting a fourth preset weight of sinter ore, pellet ore and lump ore according to the third preset proportion scheme, putting the mixture into a blast furnace for smelting, and obtaining a third slag-iron ratio D3 after third tapping of the blast furnace;

when D3 ≦ D2, according to the third pre-proportioning scheme A3: b3: c3, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D3 > D2, setting a sixth ratio correction coefficient E6 according to E1, E2, E3, E4 and E5, where E6 is (E2/E1+ E3/E2+ E4/E3+ E5/E4)/4+ [ (E3-E2)/(E2-E1) + (E4-E4)/(E4-E4) ]/3, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio correction coefficient E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore B by the sixth ratio E4 to a 4B, and determining the fourth ratio of the initial ratio of the sintered ore B4 by the sixth ratio E4 to B4: b4: c4, and a4+ B4+ C4 ═ a0+ B0+ CO;

upon determining the fourth pre-proportioning scheme A4: b4: c4, selecting sintered ore, pellet ore and lump ore with fifth preset weight according to the fourth pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a fourth slag-iron ratio D4 after fourth tapping of the blast furnace;

when D4 ≦ D3, according to the fourth pre-proportioning scheme A4: b4: c4, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D4 is larger than D3, adjusting the initial proportioning value A0 of the sintered ore to be A0i, adjusting the initial proportioning value B0 of the pellet ore to be B0i, adjusting the initial proportioning value C0 of the lump ore to be C0i, and adjusting the initial proportioning scheme to be A0: b0: CO was changed to A0 i: b0 i: 1,2, 3.. n, and according to an adjusted initial proportioning scheme A0 i: b0 i: COi, the steps one-five are executed again until the D4 is not more than D3.

Specifically, in the step S105, when D4 > D3, the ratio weight matrix M0 is preset, and an initial ratio plan correction coefficient P0 is set according to a first ratio correction coefficient E1, a second ratio correction coefficient E2, a third ratio correction coefficient E3, a fourth ratio correction coefficient E4, a fifth ratio correction coefficient E5, and a sixth ratio correction coefficient E6, by which the initial ratio plan correction coefficient P0 is a 0: b0: CO is adjusted, wherein the carbon dioxide is removed,

for the matching weight matrix M0, M0(M1, M2, M3, M4, M5, M6), wherein, M1 is the weight coefficient of E1, M1 ═ E1/(E1-1) + E1/E2+ E1/E3+ E1/E4+ E1/E5+ E1/E6]/6, M2 is the weight coefficient of E2, M2 ═ E2/(E2-1) + E2/E1+ E2/E3+ E3/E3 ]/6, M3 is the weight coefficient of E3 ═ E3/(E3-1) + E3/3, M3/E3 + E3/3 + E3/3 is the weight coefficient of E3+ E3/3 + E3/3, M3/3 + E3/3 is the weight coefficient of E3/3 + E3/3 +/3, M3/3 + E3/36, m5 is a weight coefficient of E5, M5 is a weight coefficient of [ E5/(E5-1) + E5/E1+ E5/E2+ E5/E3+ E5/E4+ E5/E6]/6, and M6 is E6; m6 ═ E6/(E6-1) + E6/E1+ E6/E2+ E6/E3+ E6/E4+ E6/E5 ]/6;

for the initial ratio recipe correction factor P0, P0 ═ (E1 × M1+ E2 × M2+ E3 × M3+ E4 × M4+ E5 × M5+ E6 × M6)/(M1+ M2+ M3+ M4+ M5+ M6);

the initial proportioning scheme is A0: b0: when CO was adjusted, A0 × P0 gave A0i, B0 × P0 gave B0i, C0 × P0 gave C0i, and determined as a new initial proportioning scheme A0 i: b0 i: COi. The proportion weight of the initial proportion scheme is corrected, so that the accuracy of the proportion scheme can be greatly improved, and the time cost is saved.

Specifically, the temperature data of the blast furnace is collected in real time through an infrared in-furnace monitoring system, when the temperature data of the blast furnace is collected, an infrared image which is collected in real time by the infrared in-furnace monitoring system during iron making of the blast furnace is partitioned, the infrared image is divided into an upper area, a middle area and a lower area of the blast furnace, and the upper area, the middle area and the lower area are the same in size;

further partitioning the upper region, establishing an upper region temperature matrix S1, S1(S11, S12, S13.. S1n), wherein S11 is the temperature in the upper first partition, S12 is the temperature in the upper second partition, S13 is the temperature in the upper third partition, and S1n is the temperature in the upper nth partition;

further partitioning the middle region, and establishing a middle region temperature matrix S2, S2(S21, S22, S23.. S2n), wherein S21 is the temperature in the first partition of the middle region, S22 is the temperature in the second partition of the middle region, S23 is the temperature in the third partition of the middle region, and S2n is the temperature in the nth partition of the middle region;

further partitioning the lower zone, establishing a lower zone temperature matrix S3, S3(S31, S32, S33.. S3n), wherein S31 is the temperature in the lower first partition, S32 is the temperature in the lower second partition, S33 is the temperature in the lower third partition, and S3n is the temperature in the lower nth partition;

and establishes a weight coefficient matrix W0, W0(W1, W2, W3.. Wn) based on the temperature ratios among S1, S2, and S3, wherein, W is a first weight coefficient, W ═ S/S + S/S) [ (S + S/S)/S ], W is a second weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], W is a third weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], Wn is an nth weight coefficient, W ═ S1/S2 + S2/S3 + S1/S3 + S3/S2 + S3/S1 + S2/S1) [ (S2 + S3)/S1 ];

and respectively calculating weighted averages of the air inlet data, the air outlet data and the injected fuel data through the weight coefficient matrix W0, and setting the first ratio correction coefficient E1 according to ratios among the weighted averages of the air inlet data, the air outlet data and the injected fuel data.

Specifically, a lower feed matrix Z1, Z1(Z11, Z12, Z13, T0, T1) is established, wherein Z11 is an intake air amount of a lower portion of the blast furnace, Z12 is an injection fuel amount of the lower portion of the blast furnace, Z13 is a total heat generation amount of the injection fuel, T0 is a highest temperature at the time of combustion of the lower region, and T1 is a lowest temperature at the time of combustion of the lower region, and a heat loss coefficient Z01 is determined from the lower feed matrix Z1, and Z01 ═ Z11/T0+ Z12/T0+ Z13/T0+ Z11/T1+ Z12/T1+ Z13/T1) [ Z11/(T0-T1) + Z12(T0-T1) + Z13(T0-T1) ];

determining an intake air amount Z02 and an injected fuel amount Z03 according to the relation among S1, S2 and S3 and a heat loss coefficient Z01;

the intake air amount Z02 ═ [ (S11+ S12+ S13+ ·+ S1n)/n × Z01] + [ (S21+ S22+ S23+ ·+ S2n)/n × Z01] + [ (S31+ S32+ S33+. + S3n)/n × Z01] +, wherein X is a preset intake air amount;

the injection fuel quantity Z03 is [ (S11+ S12+ S13+. + S1n)/n X Z01 ]. Y + [ (S21+ S22+ S23+. + S2n)/n X Z01 ]. Y + [ (S31+ S32+ S33+. + S3n)/n X Z01 ]. Y + Y, wherein Y is a preset injection fuel quantity.

The total air inflow and the total injected fuel quantity are determined through the heat loss of each area of the furnace body, so that the combustion efficiency can be effectively improved, and the insufficient combustion temperature during coal blending is prevented.

Specifically, when the first ratio correction coefficient E1 is set according to the ratio among the weighted averages of the intake data, the outtake data, and the injected fuel data, an intake data matrix H0, an outtake data matrix F0, and an injected fuel data matrix K0 are respectively established,

for the intake data matrix H0, H0(H1, H2, H3,. Hn), H1 is the ratio of the intake air amount to the intake air temperature at the first time, H2 is the ratio of the intake air amount to the intake air temperature at the second time, H3 is the ratio of the intake air amount to the intake air temperature at the third time, and Hn is the ratio of the intake air amount to the intake air temperature at the nth time; for Hi, i in the intake air data matrix H0, 1,2,3,. n, Hi is the ratio of the intake air amount at the i-th time to the intake air temperature, Hi is the intake air amount at the i-th time/intake air temperature at the i-th time;

calculating a weighted average of the intake air data H01, H01 ═ H1 × W1+ (H1+ H2) × W2+ (H1+ H2+ H3) × W3+ ·+ (H1+ H2+ H3+ ·+ Hn)/(W1 + W2+ W3+ ·+ Wn) by the weight coefficient matrix W0;

for the outgoing air data matrix F0, F0(F1, F2, F3,. Fn), F1 is the ratio of the outgoing air quantity to the outgoing air temperature at the first moment, F2 is the ratio of the outgoing air quantity to the outgoing air temperature at the second moment, F3 is the ratio of the outgoing air quantity to the outgoing air temperature at the third moment, and Hn is the ratio of the outgoing air quantity to the outgoing air temperature at the nth moment; for Fi in the outgoing air data matrix F0, i is 1,2,3,. n, Fi is a ratio of the outgoing air amount at the i-th time to the outgoing air temperature, and Fi is the outgoing air amount at the i-th time/the outgoing air temperature at the i-th time;

calculating a weighted average F01, F01 ═ F1 × W1+ (F1+ F2) × W2+ (F1+ F2+ F3) × W3+ - + (F1+ F2+ F3+ -. + Fn)/(W1 + W2+ W3+ -. + Wn) of the outgoing air data by the weight coefficient matrix W0;

for the injection fuel data matrix K0, K (K1, K2, K3,. cndot), where K1 is a ratio of an injection fuel amount at a first time to a high furnace temperature, K2 is a ratio of an injection fuel amount at a second time to the high furnace temperature, K3 is a ratio of an injection fuel amount at a third time to the high furnace temperature, and Kn is a ratio of an injection fuel amount at an nth time to the high furnace temperature; for Ki, i is 1,2,3,. n in the injection fuel data matrix K0, where Ki is the ratio of the injection fuel amount at the ith time to the blast furnace temperature, and Fi is the injection fuel amount at the ith time/the blast furnace temperature at the ith time;

calculating a weighted average K01, K01 [ [ K1 × W1+ (K1+ K2) × W2+ (K1+ K2+ K3) × W3+ ]+ (K1+ K2+ K3+ ]. + Kn)/(W1 + W2+ W3+ ] + Wn) of the injected fuel data by the weight coefficient matrix W0;

setting the first ratio correction coefficient E1 by using the weighted average number H01 of the intake air data, the weighted average number F01 of the exhaust air data, and the weighted average number K01 of the injected fuel data, where E1 is (H01/F01+ H01/K01+ F01/K01+ F01/H01+ K01/H01+ K01/F01)/[ (H01+ F01+ K01)/(H01F 01K 01) ]. J, where J is a weighted correction coefficient.

Further, the weighting correction coefficient J is calculated through the weighting coefficient matrix W0, the air inlet data matrix H0, the air outlet data matrix F0 and the injected fuel data matrix K0; the weighted correction coefficient J is calculated according to the following formula (1):

wherein, W1 is a first weight coefficient, Wn is an nth weight coefficient, J1 is a weighted average of the difference between the ratio of the air inlet quantity to the air inlet temperature in two adjacent moments, J2 is a weighted average of the difference between the ratio of the air outlet quantity to the air outlet temperature in two adjacent moments, and J3 is a weighted average of the difference between the ratio of the blowing fuel quantity to the high furnace temperature in two adjacent moments.

Further, the weighted average J1 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following formula (2):

J1＝[(H2-H1)/(H1-1)+(H3-H2)/(H2-H1)+(H4-H3)/(H3-H2)+...+(Hn-Hn-1)/(Hn-1-Hn-2)]/[(H1-1)+(H2-H1)+(H3-H2)+...+(Hn-Hn-1)] (2)

H1-Hn are selected from the intake data matrix H0, and Hn-1 is the ratio of the intake air amount to the intake air temperature at the n-1 th moment.

Further, the weighted average J2 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following equation (3):

J2＝[(F2-F1)/(F1-1)+(F3-F2)/(F2-F1)+(F4-F3)/(F3-F2)+...+(Fn-Fn-1)/(Fn-1-Fn-2)]/[(F1-1)+(F2-F1)+(F3-F2)+...+(Fn-Fn-1)] (2)

and F1 to Fn are all selected from the air outlet data matrix F0, and Fn-1 is the ratio of the air outlet quantity to the air outlet temperature at the n-1 moment.

Further, the weighted average J3 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following equation (4):

J3＝[(K2-K1)/(K1-1)+(K3-K2)/(K2-K1)+(K4-K3)/(K3-K2)+...+(Kn-Kn-1)/(Kn-1-Kn-2)]/[(K1-1)+(K2-K1)+(K3-K2)+...+(Kn-Kn-1)] (2)

K1-Kn are all selected from the injected fuel data matrix K0, and Kn-1 is the ratio of the injected fuel quantity to the high furnace temperature at the n-1 moment.

It can be seen that the optimal proportioning production scheme is obtained by repeatedly adjusting the proportioning scheme, so that the tapping quality can be ensured while the lump ore proportion is improved.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. A blast furnace ironmaking method for improving lump ore proportion is characterized by comprising the following steps:

the method comprises the following steps: selecting a first preset weight of sinter, pellet and lump ore, proportioning, and putting into a blast furnace as an initial proportioning scheme of ore, wherein the initial proportioning scheme of the ore is A0: b0: CO, wherein A0 is the initial proportioning value of the sintered ore, B0 is the initial proportioning value of the pellet ore, and C0 is the initial proportioning value of the lump ore;

step two: carrying out blast furnace smelting according to the initial proportion of the ores, and recording air inlet data, air outlet data, fuel injection data and temperature data of a blast furnace during iron making in the smelting process;

step three: obtaining an initial slag-iron ratio D0 after the first tapping of the blast furnace;

step four: setting a first ratio correction coefficient E1 according to the air inlet data, the air outlet data, the injected fuel data and the temperature data of the blast furnace, adjusting the initial ratio of the ore through the first ratio correction coefficient E1, recording the initial ratio C0 of the lump ore as C1 after first rising, recording the initial ratio A0 of the sintered ore as A1 after first rising or falling, recording the initial ratio B0 of the pellet ore as B1 after first falling or rising, and determining a first pre-ratio scheme A1: b1: c1, and a0+ B0+ CO ═ a1+ B1+ C1;

step five: selecting sintered ore, pellet ore and lump ore with second preset weight according to the first pre-proportioning scheme, proportioning, then putting into a blast furnace for smelting, obtaining a first slag-iron ratio D1 after secondary tapping of the blast furnace, comparing the initial slag-iron ratio D0 with the first slag-iron ratio D1, selecting the first pre-proportioning scheme for blast furnace iron making production when the comparison result meets the constraint condition, correcting the first pre-proportioning scheme when the comparison result does not meet the constraint condition, obtaining a new pre-proportioning scheme, obtaining a new slag-iron ratio result after the new pre-proportioning scheme is adopted for production, comparing the new slag-iron ratio result with the initial slag-iron ratio D0, and determining the pre-proportioning production scheme according to the comparison result.

2. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 1,

in the fifth step, in the first step,

when the D1 ≦ D0, according to the first pre-proportioning scheme A1: b1: c1, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when the D1 is greater than D0, a second ratio correction coefficient E2 is set according to a ratio of the initial slag-iron ratio D0 to the first slag-iron ratio D1, E2 is D1/D0, the first ratio correction coefficient E1 is corrected by the second ratio correction coefficient E2 to obtain a third ratio correction coefficient E3, E3 is E2 × E1, the initial ratio C0 of the lump ore is adjusted by the third ratio correction coefficient E3 to obtain C2, the initial ratio a0 of the sintered ore is adjusted by the third ratio correction coefficient E3 to obtain a2, the initial ratio B0 of the pellet is adjusted by the third ratio correction coefficient E3 to obtain a second ratio B2, and a second ratio 2: b2: c2, and a0+ B0+ CO ═ a2+ B2+ C2;

after determining the second pre-proportioning scheme A2: b2: c2, selecting sintered ore, pellet ore and lump ore with third preset weight according to the second pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a second slag-iron ratio D2 after secondary tapping of the blast furnace;

when the D2 ≦ D1 and/or D2 < D0, or when D2 ≦ D0, according to the second pre-proportioning scheme A2: b2: c2, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D2 > D1, a fourth ratio correction coefficient E4 is set according to D0, D1 and D2, E4 ═ D2/D1+ D2/D0+ D1/D0+ (D2+ D1)/(D1+ D0) + (D2+ D0)/(D1+ DO) ]/5, the fifth ratio correction coefficient E5 is obtained by correcting the third ratio correction coefficient E3 by the fourth ratio correction coefficient E4, E5 is E4 × E3, the initial proportioning value C0 of the lump ore is regulated for the third time by the fifth proportioning correction coefficient E5 and is recorded as C3, the initial proportion value A0 of the sintered ore is regulated and increased or reduced for the third time through the fifth proportion correction coefficient E5 and then recorded as A3, and recording as B3 after the initial proportioning value B0 of the pellet is regulated down or regulated up for the third time through the fifth proportioning correction coefficient E5, and determining a third pre-proportioning scheme A3: b3: c3, and a0+ B0+ CO ═ A3+ B3+ C3;

upon determining the third pre-proportioning scheme A3: b3: c3, selecting a fourth preset weight of sinter ore, pellet ore and lump ore according to the third preset proportion scheme, putting the mixture into a blast furnace for smelting, and obtaining a third slag-iron ratio D3 after third tapping of the blast furnace;

when D3 ≦ D2, according to the third pre-proportioning scheme A3: b3: c3, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D3 > D2, setting a sixth ratio correction coefficient E6 according to E1, E2, E3, E4 and E5, where E6 is (E2/E1+ E3/E2+ E4/E3+ E5/E4)/4+ [ (E3-E2)/(E2-E1) + (E4-E4)/(E4-E4) ]/3, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio correction coefficient E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore a4 by the sixth ratio E4 to a4, fourth increasing or decreasing the initial ratio of the sintered ore B by the sixth ratio E4 to a 4B, and determining the fourth ratio of the initial ratio of the sintered ore B4 by the sixth ratio E4 to B4: b4: c4, and a4+ B4+ C4 ═ a0+ B0+ CO;

upon determining the fourth pre-proportioning scheme A4: b4: c4, selecting sintered ore, pellet ore and lump ore with fifth preset weight according to the fourth pre-proportioning scheme, putting the mixture into a blast furnace for smelting, and obtaining a fourth slag-iron ratio D4 after fourth tapping of the blast furnace;

when D4 ≦ D3, according to the fourth pre-proportioning scheme A4: b4: c4, carrying out blast furnace ironmaking production by using an ore proportioning scheme;

when D4 is larger than D3, adjusting the initial proportioning value A0 of the sintered ore to be A0i, adjusting the initial proportioning value B0 of the pellet ore to be B0i, adjusting the initial proportioning value C0 of the lump ore to be C0i, and adjusting the initial proportioning scheme to be A0: b0: CO was changed to A0 i: b0 i: 1,2, 3.. n, and according to an adjusted initial proportioning scheme A0 i: b0 i: COi, the steps one-five are executed again until the D4 is not more than D3.

3. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 2,

in the fifth step, when D4 > D3, a matching weight matrix M0 is preset, and an initial matching scheme correction coefficient P0 is set according to E1, E2, E3, E4, E5 and E6, by which the initial matching scheme correction coefficient P0 to the initial matching scheme is a 0: b0: CO is adjusted, wherein the carbon dioxide is removed,

for the matching weight matrix M0, M0(M1, M2, M3, M4, M5, M6), wherein, M1 is the weight coefficient of E1, M1 ═ E1/(E1-1) + E1/E2+ E1/E3+ E1/E4+ E1/E5+ E1/E6]/6, M2 is the weight coefficient of E2, M2 ═ E2/(E2-1) + E2/E1+ E2/E3+ E3/E3 ]/6, M3 is the weight coefficient of E3 ═ E3/(E3-1) + E3/3, M3/E3 + E3/3 + E3/3 is the weight coefficient of E3+ E3/3 + E3/3, M3/3 + E3/3 is the weight coefficient of E3/3 + E3/3 +/3, M3/3 + E3/36, m5 is a weight coefficient of E5, M5 is a weight coefficient of [ E5/(E5-1) + E5/E1+ E5/E2+ E5/E3+ E5/E4+ E5/E6]/6, and M6 is E6; m6 ═ E6/(E6-1) + E6/E1+ E6/E2+ E6/E3+ E6/E4+ E6/E5 ]/6;

for the initial ratio recipe correction factor P0, P0 ═ (E1 × M1+ E2 × M2+ E3 × M3+ E4 × M4+ E5 × M5+ E6 × M6)/(M1+ M2+ M3+ M4+ M5+ M6);

the initial proportioning scheme is A0: b0: when CO was adjusted, A0 × P0 gave A0i, B0 × P0 gave B0i, C0 × P0 gave C0i, and determined as a new initial proportioning scheme A0 i: b0 i: COi.

4. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 1,

the method comprises the steps that temperature data of a blast furnace are collected in real time through an infrared in-furnace monitoring system, when the temperature data of the blast furnace are collected, infrared images of the blast furnace during iron making are collected in real time through the infrared in-furnace monitoring system in a partitioning mode, the infrared images are divided into an upper area, a middle area and a lower area of the blast furnace, and the upper area, the middle area and the lower area are the same in size;

further partitioning the upper region, establishing an upper region temperature matrix S1, S1(S11, S12, S13.. S1n), wherein S11 is the temperature in the upper first partition, S12 is the temperature in the upper second partition, S13 is the temperature in the upper third partition, and S1n is the temperature in the upper nth partition;

further partitioning the middle region, and establishing a middle region temperature matrix S2, S2(S21, S22, S23.. S2n), wherein S21 is the temperature in the first partition of the middle region, S22 is the temperature in the second partition of the middle region, S23 is the temperature in the third partition of the middle region, and S2n is the temperature in the nth partition of the middle region;

further partitioning the lower zone, establishing a lower zone temperature matrix S3, S3(S31, S32, S33.. S3n), wherein S31 is the temperature in the lower first partition, S32 is the temperature in the lower second partition, S33 is the temperature in the lower third partition, and S3n is the temperature in the lower nth partition;

and establishes a weight coefficient matrix W0, W0(W1, W2, W3.. Wn) based on the temperature ratios among S1, S2, and S3, wherein, W is a first weight coefficient, W ═ S/S + S/S) [ (S + S/S)/S ], W is a second weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], W is a third weight coefficient, W ═ S/S + S/S) [ (S + S)/S ], Wn is an nth weight coefficient, W ═ S1/S2 + S2/S3 + S1/S3 + S3/S2 + S3/S1 + S2/S1) [ (S2 + S3)/S1 ];

and respectively calculating weighted averages of the air inlet data, the air outlet data and the injected fuel data through the weight coefficient matrix W0, and setting the first ratio correction coefficient E1 according to ratios among the weighted averages of the air inlet data, the air outlet data and the injected fuel data.

5. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 4,

when the first ratio correction coefficient E1 is set according to the ratio among the intake data, the outtake data and the weighted average of the injected fuel data, an intake data matrix H0, an outtake data matrix F0 and an injected fuel data matrix K0 are respectively established, wherein,

for the intake data matrix H0, H0(H1, H2, H3,. Hn), H1 is the ratio of the intake air amount to the intake air temperature at the first time, H2 is the ratio of the intake air amount to the intake air temperature at the second time, H3 is the ratio of the intake air amount to the intake air temperature at the third time, and Hn is the ratio of the intake air amount to the intake air temperature at the nth time; for Hi, i in the intake air data matrix H0, 1,2,3,. n, Hi is the ratio of the intake air amount at the i-th time to the intake air temperature, Hi is the intake air amount at the i-th time/intake air temperature at the i-th time;

calculating a weighted average of the intake air data H01, H01 ═ H1 × W1+ (H1+ H2) × W2+ (H1+ H2+ H3) × W3+ ·+ (H1+ H2+ H3+ ·+ Hn)/(W1 + W2+ W3+ ·+ Wn) by the weight coefficient matrix W0;

for the outgoing air data matrix F0, F0(F1, F2, F3,. Fn), F1 is the ratio of the outgoing air quantity to the outgoing air temperature at the first moment, F2 is the ratio of the outgoing air quantity to the outgoing air temperature at the second moment, F3 is the ratio of the outgoing air quantity to the outgoing air temperature at the third moment, and Hn is the ratio of the outgoing air quantity to the outgoing air temperature at the nth moment; for Fi in the outgoing air data matrix F0, i is 1,2,3,. n, Fi is a ratio of the outgoing air amount at the i-th time to the outgoing air temperature, and Fi is the outgoing air amount at the i-th time/the outgoing air temperature at the i-th time;

calculating a weighted average F01, F01 ═ F1 × W1+ (F1+ F2) × W2+ (F1+ F2+ F3) × W3+ - + (F1+ F2+ F3+ -. + Fn)/(W1 + W2+ W3+ -. + Wn) of the outgoing air data by the weight coefficient matrix W0;

for the injection fuel data matrix K0, K (K1, K2, K3,. cndot), where K1 is a ratio of an injection fuel amount at a first time to a high furnace temperature, K2 is a ratio of an injection fuel amount at a second time to the high furnace temperature, K3 is a ratio of an injection fuel amount at a third time to the high furnace temperature, and Kn is a ratio of an injection fuel amount at an nth time to the high furnace temperature; for Ki, i is 1,2,3,. n in the injection fuel data matrix K0, where Ki is the ratio of the injection fuel amount at the ith time to the blast furnace temperature, and Fi is the injection fuel amount at the ith time/the blast furnace temperature at the ith time;

calculating a weighted average K01, K01 [ [ K1 × W1+ (K1+ K2) × W2+ (K1+ K2+ K3) × W3+ ]+ (K1+ K2+ K3+ ]. + Kn)/(W1 + W2+ W3+ ] + Wn) of the injected fuel data by the weight coefficient matrix W0;

setting the first ratio correction coefficient E1 by using the weighted average number H01 of the intake air data, the weighted average number F01 of the exhaust air data, and the weighted average number K01 of the injected fuel data, where E1 is (H01/F01+ H01/K01+ F01/K01+ F01/H01+ K01/H01+ K01/F01)/[ (H01+ F01+ K01)/(H01F 01K 01) ]. J, where J is a weighted correction coefficient.

6. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 5,

the weighting correction coefficient J is obtained by calculation through the weight coefficient matrix W0, the air inlet data matrix H0, the air outlet data matrix F0 and the injected fuel data matrix K0; the weighted correction coefficient J is calculated according to the following formula (1):

wherein, W1 is a first weight coefficient, Wn is an nth weight coefficient, J1 is a weighted average of the difference between the ratio of the air inlet quantity to the air inlet temperature in two adjacent moments, J2 is a weighted average of the difference between the ratio of the air outlet quantity to the air outlet temperature in two adjacent moments, and J3 is a weighted average of the difference between the ratio of the blowing fuel quantity to the high furnace temperature in two adjacent moments.

7. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 6,

the weighted average J1 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following formula (2):

J1＝[(H2-H1)/(H1-1)+(H3-H2)/(H2-H1)+(H4-H3)/(H3-H2)+...+(Hn-Hn-1)/(Hn-1-Hn-2)]/[(H1-1)+(H2-H1)+(H3-H2)+...+(Hn-Hn-1)] (2)

H1-Hn are selected from the intake data matrix H0, and Hn-1 is the ratio of the intake air amount to the intake air temperature at the n-1 th moment.

8. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 6,

the weighted average J2 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following formula (3):

J2＝[(F2-F1)/(F1-1)+(F3-F2)/(F2-F1)+(F4-F3)/(F3-F2)+...+(Fn-Fn-1)/(Fn-1-Fn-2)]/[(F1-1)+(F2-F1)+(F3-F2)+...+(Fn-Fn-1)] (3)

and F1 to Fn are all selected from the air outlet data matrix F0, and Fn-1 is the ratio of the air outlet quantity to the air outlet temperature at the n-1 moment.

9. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 6,

the weighted average J3 of the difference between the intake air amount and the intake air temperature ratio in the two adjacent moments is calculated by the following formula (4):

J3＝[(K2-K1)/(K1-1)+(K3-K2)/(K2-K1)+(K4-K3)/(K3-K2)+...+(Kn-Kn-1)/(Kn-1-Kn-2)]/[(K1-1)+(K2-K1)+(K3-K2)+...+(Kn-Kn-1)](4)

K1-Kn are all selected from the injected fuel data matrix K0, and Kn-1 is the ratio of the injected fuel quantity to the high furnace temperature at the n-1 moment.

10. The blast furnace ironmaking method for increasing the lump ore fraction according to claim 4, characterized by establishing a lower feed matrix Z, Z (Z, Z, Z, T, T), wherein Z is an intake air amount of a lower portion of the blast furnace, Z is an injected fuel amount of the lower portion of the blast furnace, Z is a total heat generation amount of the injected fuel, T is a highest temperature at which the lower region is combusted, and T is a lowest temperature at which the lower region is combusted, and determining a heat loss coefficient Z from the lower feed matrix Z, wherein Z is (Z/T + Z/T + Z/T + Z/T + Z/T) ([ Z/(T-T) + Z (T-T) + Z (T-T) ];

determining an intake air amount Z02 and an injected fuel amount Z03 according to the relation among S1, S2 and S3 and a heat loss coefficient Z01;

the intake air amount Z02 ═ [ (S11+ S12+ S13+ ·+ S1n)/n × Z01] + [ (S21+ S22+ S23+ ·+ S2n)/n × Z01] + [ (S31+ S32+ S33+. + S3n)/n × Z01] +, wherein X is a preset intake air amount;

the injection fuel quantity Z03 is [ (S11+ S12+ S13+. + S1n)/n X Z01 ]. Y + [ (S21+ S22+ S23+. + S2n)/n X Z01 ]. Y + [ (S31+ S32+ S33+. + S3n)/n X Z01 ]. Y + Y, wherein Y is a preset injection fuel quantity.

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