Full concentrate sintering production method

Abstract

The invention relates to the technical field of sintering production, in particular to a whole concentrate sintering production method, which comprises the following steps: firstly, preparing a sintering aid, optimizing the adding proportion of the sintering aid in a sintering material and a cold-pressed block mass according to the proportion of iron concentrate to obtain a sintering mixture, distributing the sintering mixture onto a sintering trolley, igniting, and carrying out air draft sintering to obtain a finished product sintered ore. The method has the beneficial effects that the mineralization reaction capacity of the iron ore concentrate is improved; and then according to the air permeability of the sinter bed and the mineralization reaction process, the adding proportion of different types of cold-pressed blocks is optimized, the air permeability of the sinter bed is improved, the mineralization condition of the whole concentrate sinter bed is improved, and the quality of whole concentrate sinter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sinter production technical field, and particularly relates to a full-ore sinter production method. BACKGROUND

[0002] The sintering process is an important link in the ironmaking technology, which is used to sinter the powdery mixed raw materials which are not easy to smelt into the sinter which is easy to smelt. The iron ore is an important raw material for producing the sinter, and is mainly divided into the self-produced iron concentrate and the imported ore. For the enterprises without the mine, the imported rich ore powder of different types is purchased to produce the sinter, and for the enterprises with the mine and the self-sufficient ability, the self-produced concentrate is mainly used to produce the sinter. With the expansion of the steel production capacity, the demand for the iron ore is continuously increased, which leads to the increase of the price of the iron ore and the production cost of the steel enterprises. Therefore, many enterprises have to increase the proportion of the sinter production concentrate to alleviate the increase of the steel cost.

[0003] The permeability refers to the difficulty of the gas passing through the solid bulk material layer, and is also a symbol for measuring the porosity of the mixed material. The granular degree of the sintering mixed material has a direct influence on the permeability of the mixed material. The flow state and variation law of the gas in the sintering material layer influence the mass transfer, heat transfer and physical and chemical reactions of the sintering process, and directly determine the vertical sintering speed. The good permeability of the sintering material layer can fully supply the air into the sintering material layer, which is beneficial to the physical and chemical reactions of the sintering material layer.

[0004] Due to the domestic resource characteristics, the self-produced iron concentrate must be produced through the measures such as the magnetic separation, the flotation and the gravity separation, and has the characteristics of high iron grade, fine granularity and poor granulation performance. After the proportion of the concentrate is increased, the permeability of the sintering material layer is reduced, the sintering negative pressure is increased, the fan capacity cannot meet the production requirements, and the technical indexes of the sinter are seriously influenced. In order to improve the permeability of the sintering material layer, the following measures are generally taken: (1) the imported rich ore powder is used to improve the sintering raw material conditions; (2) the material layer is thinned, and the machine speed is reduced to delay the reaction speed and ensure the ore-forming time. The addition of the rich ore powder cannot increase the proportion of the concentrate, and the production cost of the enterprise is increased. The thinning of the material layer and the reduction of the machine speed can reduce the sinter production, and therefore, an iron concentrate sintering method is urgently needed to improve the sintering ore-forming performance of the iron concentrate.

[0005] The patent 200810302466.1 discloses a sintering mixed material granulation method, which adopts twice granulation, the part of the iron concentrate is mixed with the quicklime, water is added to prepare the iron concentrate small ball; then the iron concentrate small ball is mixed with the coke powder, the flux, the returned ore, the gas ash and the iron ore powder, and the remaining iron concentrate to carry out the second granulation. Although the method adopts the twice granulation, the permeability of the sintering material layer is improved to a certain extent, but a large proportion of the rich ore powder is still added, and the influence of the returned ore granularity, the fuel granularity and the flux granularity on the iron concentrate sintering is not considered.

[0006] Patent CN201310417934.0 discloses a method for strengthening high proportion iron concentrate sintering, which divides the sintering raw material into two parts for granulation, the first part of material is the first stage granulation from the sintering raw material, part of the iron concentrate, quicklime and coke powder, and then the second stage granulation with the second part of material, the second part of material includes part of the iron concentrate, quicklime, coke powder and fine ore, limestone, dolomite and return ore. The granulation effect of the first part of material of the patent mainly depends on the granulation performance of the iron concentrate itself, and for the iron concentrate with poor granulation performance, the poor granulation effect of the first part of material will directly affect the granulation effect of the second part of material. SUMMARY

[0007] In order to overcome the shortcomings of the prior art, the present application provides a full concentrate sintering production method, which first prepares a sintering aid, and optimizes the addition ratio of the sintering aid in the sintering material and the cold-pressed briquette according to the iron concentrate ratio, to improve the mineralization reaction capacity of the iron concentrate; then optimizes the addition ratio of different types of cold-pressed briquettes according to the sintering material layer permeability and mineralization reaction process, to increase the sintering material layer permeability, improve the ore-forming conditions of the full concentrate sintering material layer, and improve the quality of the full concentrate sintering ore.

[0008] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0009] A full concentrate sintering production method, specifically comprising the following contents:

[0010] S1, preparing a concentrate sintering aid:

[0011] Boron iron concentrate, rare earth tailings, calcium hypomanganate, light burned magnesium powder and ethanolamine are mixed to prepare a sintering aid A;

[0012] Boron iron concentrate, rare earth tailings, calcium hypomanganate, light burned magnesium powder and ethanolamine are mixed to prepare a sintering aid A;

[0013] S2, preparing a carbon-containing briquette:

[0014] Iron concentrate, binder, fuel and alkaline flux are mixed to form a mixture C1, the sintering aid A is added to the mixture C1, and the mixture C1 is uniformly mixed to obtain a mixture C, wherein the addition amount of the sintering aid A is adjusted according to the composition of the iron concentrate: when the magnetite concentrate accounts for 0-30% of the iron concentrate, the addition amount of the sintering aid A accounts for 5%-8% of the mixture C; when the magnetite concentrate accounts for 31%-60% of the iron concentrate, the addition amount of the sintering aid A accounts for 3%-6% of the mixture C; when the magnetite concentrate accounts for more than 60% of the iron concentrate, the addition amount of the sintering aid A accounts for 1%-4% of the mixture C; the mixture C is cold-solidified and formed by a briquetting machine, the forming pressure is 10-20 MPa, and a carbon-containing briquette C is prepared;

[0015] Mixing iron concentrate, binder, fuel and alkaline flux to form mixture D1, add sintering aid B to mixture D1, mix to obtain mixture D, wherein the addition amount of sintering aid B is adjusted according to the composition of iron concentrate: when the magnetite concentrate accounts for 0-30% of the iron concentrate, the addition amount of sintering aid B accounts for 7%-10% of mixture D; when the magnetite concentrate accounts for 31%-60% of the iron concentrate, the addition amount of sintering aid B accounts for 5%-8% of mixture D; when the magnetite concentrate accounts for more than 60% of the iron concentrate, the addition amount of sintering aid B accounts for 3%-6% of mixture D; the mixture D is cold-solidified and formed by a briquetting machine, the forming pressure is 14 MPa-20 MPa, and carbon-containing briquettes D are prepared;

[0016] S3, preparing a sintering mixture:

[0017] Mixing sintering raw materials, fuel and sintering aid B to form mixture N, adding carbon-containing briquettes D to mixture N, and mixing uniformly to form lower layer sintering material; the carbon-containing briquettes D account for 20%-30% of the mass of the lower layer sintering material;

[0018] Mixing sintering raw materials, fuel and sintering aid A to form mixture M, adding carbon-containing briquettes C to mixture M, and mixing uniformly to form upper layer sintering material; the carbon-containing briquettes C account for 10%-20% of the mass of the upper layer sintering material;

[0019] S4, distributing and igniting sintering:

[0020] The lower layer sintering material is first distributed and added to the sintering trolley, the distribution height is 550 mm-600 mm, and the first ignition and air draft sintering is performed; the first ignition temperature is 950-1000℃, and the first air draft negative pressure is 8000 Pa-12000 Pa; after the lower layer sintering material is discharged from the first igniter for 7-15 min, the upper layer sintering material is distributed and added to the surface of the sintering ore being sintered, the distribution height is 450 mm-500 mm, and the second ignition and air draft sintering is performed; the second ignition temperature is 1000-1050℃, and the second air draft negative pressure is 13000 Pa-17000 Pa; the air draft negative pressure is adjusted so that the upper layer and the lower layer sintering material reach the sintering terminal point at the same time, and the finished sintering ore is obtained.

[0021] Further, the mass fraction of boron iron concentrate in the sintering aid A in step S1 is 45%-53%, the mass fraction of rare earth tailings is 15%-23%, the mass fraction of calcium ferrite is 10%-20%, the mass fraction of light burned magnesium powder is 15%-22%, and the mass fraction of ethanolamine is 2%-5%.

[0022] Further, the mass fraction of boron iron concentrate in the sintering aid B in step S1 is 40%-48%, the mass fraction of rare earth tailings is 10%-20%, the mass fraction of calcium permanganate is 15%-24%, the mass fraction of light burned magnesium powder is 20%-27%, and the mass fraction of methyl methacrylic acid polymer is 1%-4%.

[0023] Further, the iron concentrate in step S2 is composed of magnetite concentrate and hematite concentrate, wherein the FeO mass fraction of the magnetite concentrate is > 22%, and the particle size of -200 mesh is > 80%; the FeO mass fraction of the hematite concentrate is < 10%, and the particle size of -200 mesh is > 60%.

[0024] Further, the basicity of the carbon-containing briquettes C and D in step S2 is controlled to be 1.8-2.2, and the particle size is 10-18 mm.

[0025] Further, the mass fraction of the iron concentrate in the mixture C1 in step S2 is 75-83%, the mass fraction of the binder is 2-5%, the mass fraction of the fuel is 7-10%, and the mass fraction of the basic flux is 6-12%.

[0026] Further, the mass fraction of the iron concentrate in the mixture D1 in step S2 is 78-85%, the mass fraction of the binder is 3-6%, the mass fraction of the fuel is 4-7%, and the mass fraction of the basic flux is 6-12%.

[0027] Further, the mass fraction of the sintering raw material in the mixture N in step S3 is 87-92%, the mass fraction of the fuel is 2.5-5%, and the mass fraction of the sintering aid B is 5-9%.

[0028] Further, the mass fraction of the sintering raw material in the mixture M in step S3 is 87-92%, the mass fraction of the fuel is 4-7%, and the mass fraction of the sintering aid A is 2-6%.

[0029] Further, the binder is mixed with one or two of bentonite, water glass, sodium humate, sodium carboxymethyl cellulose, and polyacrylamide; the fuel is mixed with one or two of coke powder, anthracite, semi-coke, and biomass carbon; and the basic flux is mixed with one or two of quicklime, slaked lime, and limestone powder.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1) The two sintering aids are prepared creatively, and are added to the upper and lower sintering materials respectively, and the ratio of the two sintering aids is optimized according to the mineralization reaction conditions of the upper and lower sintering materials, which can greatly improve the ore-forming performance of the sintered concentrate, and further improve the quality of the sintered ore.

[0032] 2) The patent adds two kinds of sintering aids to the upper and lower layers of carbon-containing briquettes, respectively, and adjusts the proportion of sintering aids in carbon-containing briquettes according to the proportion of concentrate, and optimizes the composition of carbon-containing briquettes, so that the carbon-containing briquettes can improve the permeability of the sintering material layer and strengthen the reaction process of the whole concentrate sintering, thereby improving the whole concentrate sintering index.

[0033] 3) The patent adjusts the fuel ratio of the upper and lower layers of sintering material, optimizes the addition ratio and type of carbon-containing briquettes in the upper and lower layers of sintering material, fundamentally improves the mineralization reaction conditions of the upper and lower layers of sintering material, balances the heat distribution of the upper and lower layers, and can realize the whole concentrate thick layer sintering production. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application are further described below:

[0035] Example 1: A whole concentrate sintering production method, boron iron concentrate, rare earth tailings, calcium high-iron, light burned magnesium powder and ethanolamine are used to form a mixture A, wherein the mass fraction of boron iron concentrate is 47%, the mass fraction of rare earth tailings is 19%, the mass fraction of calcium high-iron is 14%, the mass fraction of light burned magnesium powder is 17%, and the mass fraction of ethanolamine is 3%; the mixture A is uniformly mixed to form a sintering aid A. Boron iron concentrate, rare earth tailings, calcium permanganate, light burned magnesium powder and methyl acrylic acid polymer are used to form a mixture B, wherein the mass fraction of boron iron concentrate is 44%, the mass fraction of rare earth tailings is 15%, the mass fraction of calcium permanganate is 18%, the mass fraction of light burned magnesium powder is 21%, and the mass fraction of methyl acrylic acid polymer is 2%; the mixture B is uniformly mixed to form a sintering aid B.

[0036] The iron concentrate, binder, fuel and alkaline flux are combined to form mixture C1, wherein the mass fraction of the iron concentrate is 80%, the mass fraction of the binder is 3%, the mass fraction of the fuel is 8%, and the mass fraction of the alkaline flux is 9%; the iron concentrate used is composed of magnetite concentrate and hematite concentrate, and the magnetite concentrate accounts for 28% of the total mass of the concentrate. The sintering aid A is added to the mixture C1 and mixed thoroughly to obtain mixture C, wherein the addition amount of the sintering aid A accounts for 7% of the total mass of the mixture C. The iron concentrate, binder, fuel and alkaline flux are combined to form mixture D1, wherein the mass fraction of the iron concentrate is 80%, the mass fraction of the binder is 4%, the mass fraction of the fuel is 5%, and the mass fraction of the alkaline flux is 10%; the iron concentrate used is composed of magnetite concentrate and hematite concentrate, and the magnetite concentrate accounts for 45% of the total mass of the concentrate. The sintering aid B is added to the mixture D1 and mixed thoroughly to obtain mixture D, wherein the addition amount of the sintering aid B accounts for 7% of the total mass of the mixture D. The total iron of the magnetite concentrate is 66.4%, the mass fraction of FeO is 25%, and the particle size greater than 200 mesh accounts for 85%; the total iron of the hematite concentrate is 65.8%, the mass fraction of FeO is 3.5%, and the particle size greater than 200 mesh accounts for 65%. The binder is a mixture of bentonite and sodium carboxymethyl cellulose; the fuel is coke powder, and the alkaline flux is limestone powder. The mixture C is formed into carbon-containing briquettes C by cold solidification molding through a briquetting machine at a forming pressure of 12 MPa; the mixture D is formed into carbon-containing briquettes D by cold solidification molding through a briquetting machine at a forming pressure of 15 MPa; and the particle size of the carbon-containing briquettes C and the carbon-containing briquettes D is 14 mm to 18 mm.

[0037] The sintering raw material, fuel and sintering aid B are combined to form mixture N, wherein the mass fraction of the sintering raw material is 91%, the mass fraction of the fuel is 3%, and the mass fraction of the sintering aid B is 6%; the carbon-containing briquettes D are added to the mixture N and mixed thoroughly to form the lower layer sintering material; the carbon-containing briquettes D account for 30% of the mass of the lower layer sintering material. The sintering raw material, fuel and sintering aid A are combined to form mixture M, wherein the mass fraction of the sintering raw material is 90%, the mass fraction of the fuel is 5%, and the mass fraction of the sintering aid A is 5%; the carbon-containing briquettes C are added to the mixture M and mixed thoroughly to form the upper layer sintering material; the carbon-containing briquettes C account for 20% of the mass of the upper layer sintering material. The basicity of the carbon-containing briquettes C and the carbon-containing briquettes D is 1.95, which is the same as that of the upper layer and the lower layer sintering material.

[0038] The lower layer sintering material is first laid on the sintering pallet at a laying height of 550 mm, and first ignition and air draft sintering is performed at an ignition temperature of 980 ℃ and an air draft negative pressure of 9500 Pa; after the lower layer sintering material is discharged from the first igniter for 9 minutes, the upper layer sintering material is laid on the surface of the sintering ore that is being sintered at a laying height of 450 mm, and second ignition and air draft sintering is performed at an ignition temperature of 1010 ℃ and an air draft negative pressure of 16000 Pa. The air draft negative pressure is adjusted so that the upper layer and the lower layer sintering material reach the sintering end point at the same time, and the finished sintered ore is obtained.

[0039] Example 2: A full-ore sintering production method, boron iron concentrate, rare earth tailings, calcium ferrite, light burned magnesium powder and ethanolamine are used to form a mixture A, wherein the mass fraction of boron iron concentrate is 50%, the mass fraction of rare earth tailings is 15%, the mass fraction of calcium ferrite is 16%, the mass fraction of light burned magnesium powder is 15%, and the mass fraction of ethanolamine is 4%; the mixture A is fully mixed to form a sintering aid A. Boron iron concentrate, rare earth tailings, calcium permanganate, light burned magnesium powder and methacrylic acid polymer are used to form a mixture B, wherein the mass fraction of boron iron concentrate is 48%, the mass fraction of rare earth tailings is 12%, the mass fraction of calcium permanganate is 21%, the mass fraction of light burned magnesium powder is 26%, and the mass fraction of methacrylic acid polymer is 3%; the mixture B is fully mixed to form a sintering aid B.

[0040] Iron concentrate, binder, fuel and alkaline flux are used to form a mixture C1, wherein the mass fraction of iron concentrate is 78%, the mass fraction of binder is 4%, the mass fraction of fuel is 7%, and the mass fraction of alkaline flux is 11%; the iron concentrate used is composed of magnetite concentrate and hematite concentrate, and the magnetite concentrate accounts for 40% of the total mass of the concentrate. The sintering aid A is added to the mixture C1 and fully mixed to obtain a mixture C, wherein the addition amount of the sintering aid A accounts for 5% of the total mass of the mixture C. Iron concentrate, binder, fuel and alkaline flux are used to form a mixture D1, wherein the mass fraction of iron concentrate is 82%, the mass fraction of binder is 5%, the mass fraction of fuel is 4%, and the mass fraction of alkaline flux is 9%; the iron concentrate used is composed of magnetite concentrate and hematite concentrate, and the magnetite concentrate accounts for 64% of the total mass of the concentrate. The sintering aid B is added to the mixture D1 and fully mixed to obtain a mixture D, wherein the addition amount of the sintering aid B accounts for 4% of the total mass of the mixture D. The total iron of the magnetite concentrate is 65.9%, the mass fraction of FeO is 27%, and the particle size greater than 200 mesh accounts for 90%; the total iron of the hematite concentrate is 65.2%, the mass fraction of FeO is 4.5%, and the particle size greater than 200 mesh accounts for 70%. The binder is a mixture of water glass and polyacrylamide; the fuel is a mixture of anthracite and semi-coke, and the alkaline flux is quicklime. The mixture C is formed by cold solidification molding through a briquetting machine, the molding pressure is 14 MPa, and carbon-containing briquettes C are prepared; the mixture D is formed by cold solidification molding through a briquetting machine, the molding pressure is 17 MPa, and carbon-containing briquettes D are prepared; the particle size of the carbon-containing briquettes C and the carbon-containing briquettes D is 13 mm to 17 mm.

[0041] Sinter raw material, fuel, sintering aid B are mixed to form mixture N, wherein the mass fraction of sinter raw material is 91%, the mass fraction of fuel is 3%, and the mass fraction of sintering aid B is 6%; carbon-containing lump D is added to mixture N, and after being mixed thoroughly, lower layer sintering material is formed; the carbon-containing lump D accounts for 24% of the mass of the lower layer sintering material. Sinter raw material, fuel, sintering aid A are mixed to form mixture M, wherein the mass fraction of sinter raw material is 90%, the mass fraction of fuel is 5%, and the mass fraction of sintering aid A is 5%; carbon-containing lump C is added to mixture M, and after being mixed thoroughly, upper layer sintering material is formed; the carbon-containing lump C accounts for 16% of the mass of the upper layer sintering material. The basicity of the carbon-containing lump C and the carbon-containing lump D is 2.1, which is the same as that of the upper layer and the lower layer sintering material.

[0042] The lower layer sintering material is first laid on the sintering trolley, and the laying height is 580 mm; the first ignition and air draft sintering is carried out, the ignition temperature is 1000℃, and the air draft negative pressure is 10000 Pa; after the lower layer sintering material is discharged from the first igniter for 12 minutes, the upper layer sintering material is laid on the surface of the sintering ore which is being sintered, the laying height is 450 mm, the second ignition and air draft sintering is carried out, the ignition temperature is 1040℃, and the air draft negative pressure is 16500 Pa. The air draft negative pressure is adjusted so that the upper layer and the lower layer sintering material reach the sintering terminal point at the same time, and the finished sinter is obtained.

[0043] In the comparative example, the solid fuel-coal used in the sintering production without any treatment is used as fuel, the sintering mixture is prepared by mixing and granulating after batching and adding water, and the sintering ore is obtained by laying and sintering in the sintering equipment.

[0044] The beneficial effect comparison of the embodiment and the comparative example of the present application is shown in Table 1.

[0045] Table 1-Beneficial effect comparison of the embodiment and the comparative example of the present application:

[0046]

[0047] From the above comparative example and embodiment, it can be seen that the sintering material layer is obviously improved, the sintering utilization coefficient is improved, the fixed fuel consumption is obviously reduced, the sintering ore drum strength is increased, and the degree of reduction is increased.

[0048] The above description is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A method of producing sinter from a whole ore feedstock, characterised by, Specifically comprising the following contents: S1, preparation of concentrate sintering aid: Boron iron concentrate, rare earth tailings, calcium permanganate, light burned magnesium powder and methyl methacrylate polymer are mixed to prepare sintering aid B; S2, preparation of carbon-containing briquettes: Iron concentrate, binder, fuel and alkaline flux are mixed to form mixture C1, and sintering aid A is added to mixture C1, and mixed uniformly to obtain mixture C, wherein the addition amount of sintering aid A is adjusted according to the composition of iron concentrate: when the magnetite accounts for 0-30% of the iron concentrate, the addition amount of sintering aid A accounts for 5%-8% of the mixture C; when the magnetite accounts for 31%-60% of the iron concentrate, the addition amount of sintering aid A accounts for 3%-6% of the mixture C; when the magnetite accounts for more than 60% of the iron concentrate, the addition amount of sintering aid A accounts for 1%-4% of the mixture C; the mixture C is cold-solid formed by a briquetting machine, and the forming pressure is 10-20 MPa, to prepare carbon-containing briquettes C; Iron concentrate, binder, fuel and alkaline flux are mixed to form mixture D1, and sintering aid B is added to mixture D1, and mixed uniformly to obtain mixture D, wherein the addition amount of sintering aid B is adjusted according to the composition of iron concentrate: when the magnetite accounts for 0-30% of the iron concentrate, the addition amount of sintering aid B accounts for 7%-10% of the mixture D; when the magnetite accounts for 31%-60% of the iron concentrate, the addition amount of sintering aid B accounts for 5%-8% of the mixture D; when the magnetite accounts for more than 60% of the iron concentrate, the addition amount of sintering aid B accounts for 3%-6% of the mixture D; the mixture D is cold-solid formed by a briquetting machine, and the forming pressure is 14-20 MPa, to prepare carbon-containing briquettes D; S3, preparation of sintering mixture: Sintering raw material, fuel and sintering aid B are mixed to form mixture N, and carbon-containing briquettes D are added to mixture N, and mixed uniformly to form lower layer sintering material; the carbon-containing briquettes D account for 20%-30% of the mass of the lower layer sintering material; Sintering raw material, fuel and sintering aid A are mixed to form mixture M, and carbon-containing briquettes C are added to mixture M, and mixed uniformly to form upper layer sintering material; the carbon-containing briquettes C account for 10%-20% of the mass of the upper layer sintering material; S4, distribution and ignition sintering: The lower layer sintering material is first distributed and added to the sintering trolley, the distribution height is 550-600 mm, and the first ignition and air draft sintering is carried out; the first ignition temperature is 950-1000℃, and the first air draft negative pressure is 8000-12000 Pa; after the lower layer sintering material is discharged from the first igniter for 7-15 min, the upper layer sintering material is distributed and added to the surface of the sintering ore being sintered, the distribution height is 450-500 mm, and the second ignition and air draft sintering is carried out; the second ignition temperature is 1000-1050℃, and the second air draft negative pressure is 13000-17000 Pa; the air draft negative pressure is adjusted, so that the upper layer and the lower layer sintering material reach the sintering terminal point at the same time, and the finished sinter is obtained. ​ 2. A method of producing sinter from a whole ore according to claim 1, characterised in that, The sintering aid A in step S1 contains 45-53% of boron iron concentrate, 15-23% of rare earth tailings, 10-20% of calcium ferrite, 15-22% of light burned magnesium powder and 2-5% of ethanol amine.

3. A method of producing sinter from a whole ore according to claim 1, characterised in that, The sintering aid B in step S1 contains 40-48% of boron iron concentrate, 10-20% of rare earth tailings, 15-24% of calcium permanganate, 20-27% of light burned magnesium powder and 1-4% of methyl acrylic acid polymer.

4. A method of producing sinter from a whole ore according to claim 1, characterised in that, The iron concentrate in step S2 is composed of magnetite concentrate and hematite concentrate, wherein the FeO content of the magnetite concentrate is >22% and the particle size of -200 mesh is >80%; the FeO content of the hematite concentrate is <10% and the particle size of -200 mesh is >60%.

5. A method of producing sinter from a whole ore according to claim 1, characterised in that, The basicity of the carbon-containing briquettes C and D in step S2 is controlled to be 1.8-2.2, and the particle size is 10-18 mm.

6. A method of producing sinter from a whole ore according to claim 1, characterised in that, The iron concentrate content in the mixture C1 in step S2 is 75-83%, the binder content is 2-5%, the fuel content is 7-10% and the basic flux content is 6-12%.

7. A method of producing sinter from a whole ore according to claim 1, characterised in that, The iron concentrate content in the mixture D1 in step S2 is 78-85%, the binder content is 3-6%, the fuel content is 4-7% and the basic flux content is 6-12%.

8. A method of producing sinter from a whole ore according to claim 1, characterised in that, The sintering raw material content in the mixture N in step S3 is 87-92%, the fuel content is 2.5-5% and the sintering aid B content is 5-9%.

9. A method of producing sinter from a whole ore according to claim 1, characterised in that, The sintering raw material content in the mixture M in step S3 is 87-92%, the fuel content is 4-7% and the sintering aid A content is 2-6%.

10. A method of producing sinter from a whole ore according to claim 1, characterised in that, The binder is a mixture of one or two of bentonite, water glass, sodium humate, sodium carboxymethyl cellulose and polyacrylamide; the fuel is a mixture of one or two of coke powder, anthracite, semi-coke and biomass carbon; and the basic flux is a mixture of one or two of quicklime, slaked lime and limestone powder.

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