TWI447229B - Method and method for hot rolling and feeding of ironmaking raw materials, iron - rich gas - fired iron - making device and method thereof - Google Patents

Description

Hot-steam hot charging device and method for iron-making raw material, oxygen-rich hydrogen-rich gas iron making device and method thereof

The invention relates to the field of ironmaking and energy technology, in particular to an oxygen-rich hydrogen-rich gas iron making device and a method thereof, which realizes hot-heating and heating of iron-making raw materials and low-carbon total oxygen-rich hydrogen-smelting iron making.

With the continuous acceleration of modern industrialization, global energy consumption and CO2 emissions have increased dramatically, the resulting air pollution and greenhouse effect have seriously threatened the global environment on which humans depend. China's steel industry's carbon dioxide emissions are second only to electricity. Therefore, the reduction of carbon dioxide emissions is a major responsibility of the steel industry. The iron-making system, which consumes more than 70% of the total energy consumption of the entire steel production, is the primary target for energy conservation and reduction of carbon dioxide emissions, but the processes of coking, sintering, pelleting and ironmaking can be achieved under existing technological conditions. Energy conservation and emission reduction have been limited, so there must be technological innovation to achieve significant energy conservation and emission reduction.

The raw materials for blast furnace ironmaking mainly include coke, sinter and pellets, and the existing blast furnace charge is charged into the furnace at normal temperature. The normal temperature charge is convenient for transportation, storage and use, but the raw material needs to be cooled from high temperature to normal temperature by the cooling equipment in the production process, and is reheated to high temperature in the blast furnace, which increases equipment investment and land occupation, and loses a large amount of Thermal energy.

Generally, the red coke temperature introduced by the coke oven reaches about 800-1200 ° C, and the coke is mainly cooled to normal temperature by two methods of dry quenching and wet quenching. No matter which type of cooling is used, stress is broken due to the drastic changes in temperature of the coke, resulting in a decrease in strength and yield. Although CDQ can recover the sensible heat of coke for power generation, the energy recovery efficiency is low; the wet quenching coke is quenched and quenched by the quenching tower, completely wasting the sensible heat of coke, and consuming a lot of water resources, resulting in a certain environment. Pollution.

Generally, the temperature of the high-temperature sintered ore before cooling is about 800-1000 ° C, and the temperature of the high-temperature pellet is about 800-1400 ° C before cooling. At present, it is mainly cooled by a ring cooler or a cold machine, and the sensible heat is generated by a waste heat boiler to generate low-pressure steam. Utilization, energy recovery efficiency is also very low.

The blast furnace has achieved good results in increasing production, reducing coke and reducing consumption through high oxygen enrichment and large coal injection. When the oxygen enrichment rate is further increased and even pure oxygen smelting, the coal injection amount can be maximized and the coke ratio can be reduced. The problem is that the amount of blast furnace gas is insufficient, and the lower temperature of the upper part caused by the cold material entering the furnace affects the indirect reduction of the gas, resulting in an increase in the direct reduction specific gravity, and an increase in the consumption of carbon. The problem of insufficient heat in the upper part can be solved by the current popular technical idea that high temperature gas is blown into the lower part of the furnace body. However, due to the problem of carbon deposition during the heating process and the heating of the gas, it is necessary to additionally burn a certain amount of gas. Keep the technology at the stage of thought.

The object of the present invention is to provide an oxygen-rich hydrogen-rich gas iron making device and a method thereof for coking and sintering, which are provided with a hot-steam hot charging device for iron-making raw materials and using a hot-steam hot charging method for iron-making raw materials, in view of the above problems existing in the prior art. The pellet-based, iron-making furnace-based raw material hot-steam hot-smelting ironmaking process and related equipment, using injection oxygen and hydrogen-rich gas smelting technology to achieve clean production, high efficiency and energy saving and environmental protection.

The whole oxygen rich hydrogen iron making method of the invention comprises: coupling coking, sintering, pelleting and ironmaking furnace, coke, sinter, pellets without cooling, heat sending heat through conveying and charging equipment at high temperature Installed in the ironmaking furnace, an oxygen vent and a gas injection facility are arranged at the lower part of the ironmaking furnace to blow oxygen and a hydrogen-rich flammable gas having a certain temperature into the ironmaking furnace, and a gas vent at the lower part of the ironmaking furnace to iron smelting A hydrogen-rich flammable gas with a certain temperature is blown into the furnace, and coke and coal are replaced by hydrogen-rich flammable gas to achieve the goal of energy saving and emission reduction. The high-temperature and high-calorific value gas discharged from the upper part of the iron-making furnace transfers the physical heat to the hydrogen-rich combustible gas injected into the furnace through the regenerative heat exchanger, and then is used for the production of coke, sintered ore and pellets. Here, the hydrogen-rich combustible gas includes coke oven gas, natural gas, and other types of hydrogen-rich combustible gases.

One of the technical solutions of the present invention provides a hot charging and hot charging device for ironmaking raw materials, which comprises a coke hot charging and charging device, wherein the coke hot charging and charging device comprises a coke oven, a high temperature coke conveying device, and a high temperature. Coke transfer bin, high temperature coke weighing hopper, high temperature furnace material conveying device and high temperature resistant furnace top; coke oven through high temperature coke conveying device and high temperature coke transfer bin, high temperature coke weighing hopper and high temperature coke transfer The warehouse is connected through a pipe or a closed chute, and the high-temperature coke weighing hopper is connected to the high-temperature furnace material conveying device through a pipe or a closed chute, and the high-temperature furnace material conveying device is connected to the ironmaking furnace through the high-temperature furnace top.

The apparatus may also include a sinter ore heat transfer device and/or a pellet heat transfer device. The sinter ore hot charging and charging device is composed of a sintering machine, a high-temperature sinter conveying device, a high-temperature sinter ore transfer bin and a high-temperature sinter weighing hopper, and the sintering machine passes through a high-temperature sinter conveying device and a high-temperature sinter ore transfer material. The warehouse is connected, the high-temperature sinter weighing scale is connected with the high-temperature sinter transfer bin through the pipeline or the closed chute, and the high-temperature sinter weighing hopper is connected with the high-temperature furnace conveying device through the pipeline or the closed chute, and the high-temperature charging material is transported. The device is connected to the ironmaking furnace through a high temperature resistant furnace roof. The pellet ore hot charging device is composed of a pellet ore roasting machine, a high temperature pelletizing ore conveying device, a high temperature pelletizing ore converting bin and a high temperature pelletizing weighing hopper, and the pelletizing ore roasting machine passes through the high temperature. The pellet ore conveying device is connected with the high temperature pelletizing ore transfer bin, and the high temperature pelletizing ore weighing bucket is connected with the high temperature pelletizing ore transferring silo through the pipeline or the closed chute, and the high temperature pelletizing scale weighing bucket and high temperature charging material conveying The device is connected through a pipe or a closed chute, and the high-temperature charge conveying device is connected to the iron making furnace through the high-temperature furnace top.

The lining of the high temperature coke transfer bin, the high temperature sintered ore transfer bin or the high temperature pellet ore transfer bin is an impact resistant thermal insulation material, and the high temperature coke transfer bin and the high temperature sintered ore transfer bin Or the transfer bin in the transfer bin of the high-temperature pellet ore is provided with a sealing cover, and the sealing cover is provided with a heat insulating material toward the position of each transfer silo, and the shape of each transfer silo is square, rectangular, elliptical, cylindrical Shape or circle.

The high temperature charge conveying device is a vertical level lifting device or a diagonal bridge lifting device.

The second technical solution of the present invention provides a method for hot charging and hot charging of iron-making raw materials, comprising the following steps: a. The mature coke produced by the coke oven is directly sent to the high-temperature coke by the high-temperature coke conveying device without quenching. In the transfer silo; b. The high-temperature coke transfer silo is used as a buffer and heat preservation container for high-temperature coke. The high-temperature coke is passed through a high-temperature coke weighing hopper, and then sent to the high-temperature furnace top through a closed high-temperature furnace material conveying device, and then The high temperature furnace roof is placed into the ironmaking furnace as required.

The method for hot charging and hot charging of the ironmaking raw material of the present invention may further comprise the steps of: feeding the high temperature coke and the high temperature sintered ore together into the ironmaking furnace, or placing the high temperature coke and the high temperature The pellets are sent to the ironmaking furnace together, or the high-temperature coke, high-temperature sintered ore and high-temperature pellets are sent to the ironmaking furnace.

According to a third aspect of the present invention, there is provided an apparatus for realizing an oxygen-rich hydrogen-rich gas iron making process of an oxygen-rich hydrogen-rich gas iron making process, the apparatus comprising: an iron making furnace, and the iron making according to the first technical solution Raw material hot delivery hot charging device, ironmaking furnace, top gas system, coke oven gas injection system, dust blowing system, slag dry granulation and waste heat recovery system and oxygen system. The hot-steam hot charging device of the iron-making raw material is connected to the iron-making furnace through the high-temperature resistant furnace top, and the top gas system is connected to the iron-making furnace through the pipeline, and the coke oven gas injection system is connected to the iron-making furnace through the pipeline, and the dust blowing system The pipeline is connected to the ironmaking furnace, the slag dry granulation and the waste heat recovery system are connected to the ironmaking furnace through the slag iron trench, and the oxygen system is connected to the ironmaking furnace through the pipeline; wherein the ironmaking furnace is provided with two rows of air outlets, They are the lower exhaust oxygen outlets installed in the lower part of the ironmaking furnace and the upper exhaust gas outlets located in the lower middle part of the ironmaking furnace and above the root of the soft melting zone. The top gas system consists of a high temperature gas dedusting device at the top of the furnace, 4 to 6 regenerative heat exchange devices, 4 to 30 bag dust removal devices, combined power generation devices and gas storage cabinets. The ironmaking furnace is connected to the high-temperature gas dust removing device at the top of the furnace through a pipeline, and the high temperature gas dust removing device, the regenerative heat exchange device, the bag dust removing device, the combined power generating device and the gas storage cabinet of the furnace top are sequentially connected through the pipeline.

The coke oven gas injection system is composed of a coke oven, a coke oven gas purification system, a gas pressure fan, a regenerative heat exchange device, and a gas injection temperature regulation device. The coke oven is connected to the coke oven gas purification system through a pipeline. The purified gas is divided into two channels, one is connected to the gas pressure fan, the regenerative heat exchange device and the gas injection temperature regulating device through the pipeline, and then through the pipeline. It is connected to the upper gas vents installed in the lower part of the ironmaking furnace and above the root of the soft melting zone, and the other line is sequentially pressurized with the gas through the pipeline. The machine is connected to the regenerative heat exchange device and then connected to the lower oxygen vent which is disposed at the lower part of the ironmaking furnace.

The dust blowing system consists of a high temperature gas dust removal device, a bag dust removal device and a dust spray can. The high-temperature gas dedusting device at the top of the furnace is connected to the dust blowing and blowing tank through a dust conveying device, and the bag dust removing device is connected to the dust blowing and blowing tank through the dust conveying device. The dust spray can is connected to the iron furnace.

The slag dry granulation and waste heat recovery system includes a slag iron separator, a slag granulation and heat exchange device, a boiler, a fan and a combined power generation device.

The slag iron flowing out of the ironmaking furnace flows into the slag iron separator through the iron water channel and is divided into a slag liquid flow and a molten iron flow. The molten iron flows through the iron water ditch and is connected with the molten iron transport device, and the slag liquid flow passes through the slag ditch and the slag granulation. Connected to the heat exchange device, the fan is connected to the heat exchange device through the pipeline and the slag granulation, the slag granulation and the heat exchange device are connected to the boiler through the pipeline, the boiler is connected to the combined power generation device through the pipeline, and the slag granulation and the heat exchange device are transmitted through The cutting tube is connected to the slag transport device.

The regenerative heat exchanger can be a regenerative heat exchanger or a heat exchange heat exchanger.

According to a fourth aspect of the present invention, there is provided an oxygen-rich hydrogen-rich gas iron-making method comprising the steps of: 1) performing the hot-steaming and hot-packing method of the iron-making raw material according to the second aspect of the invention; 2) the iron-making furnace ( 3) Set two rows of air outlets, which are the lower exhaust oxygen outlets installed in the lower part of the ironmaking furnace (3) and the upper exhaust gas outlets located in the lower middle part of the ironmaking furnace (3) and above the root of the soft melting zone; The oxygen outlet is blown into the 200-600 cubic meters / Ton of iron oxygen and 20-300 cubic meters / ton of iron preheated hydrogen-rich flammable gas, while spraying 100-600 cubic meters / ton of iron preheated hydrogen-rich flammable gas through the upper exhaust gas vent, the hydrogen-rich flammable gas is Coke oven gas or natural gas, the injection temperature of hydrogen-rich flammable gas is controlled at 600-1200 °C; 3) The temperature of gas discharged from the top of ironmaking furnace is 250-1200 °C, first through the high-temperature gas dust removal device of ironmaking furnace top (4) Dust removal, and then the sensible heat of the gas is recovered by 4-6 regenerative heat exchange devices, wherein 2-3 regenerative heat exchange devices are used to preheat the hydrogen-rich combustible gas injected into the furnace from the oxygen tuyere, and 2- 3 regenerative heat exchange devices are used for preheating the hydrogen-rich combustible gas injected into the furnace from above the root of the soft melt zone; 4) the gas discharged from the top of the ironmaking furnace passes through the 4-6 regenerative heat exchange devices After the heat exchange, the temperature drops below 200 °C, and the dust is finely removed by 4-30 bag dust removal devices. The clean gas is used for coking, sintering and pellet production. 5) The high temperature gas dust removal device (4) of the ironmaking furnace top and the above The dust collected by 4-30 bag dust removal devices is sprayed from the oxygen tuyere of the ironmaking furnace through the dust blowing tank (7). In the iron furnace (3), the dust pollution is eliminated; 6) the high temperature liquid slag produced by the ironmaking furnace (3) is granulated by the slag granulation and heat exchange device (15), and the recovered slag sensible heat is generated by the boiler (16). The steam is combined with the high-pressure gas discharged from the top of the ironmaking furnace to drive the combined power generation unit (5) to generate electricity.

In the technical solutions 1 to 4 of the present invention, the coke inlet temperature is 100 ° C ~ 1200 ° C; the sintered ore temperature is 100 ° C ~ 1000 ° C; the pelletizing temperature is 100 ° C ~ 1400 ° C; The charging temperature of coke, sinter and pellets may be 300 ° C ~ 1000 ° C, 300 ° C ~ 900 ° C and 300 ° C ~ 1000 ° C, respectively; the inlet temperature of the above three raw materials is preferably 500-800 ° C. In the present invention, the raw material is charged into the furnace. The temperature is the temperature at which the raw material enters the ironmaking furnace.

In the invention, the hot charge of the charge is utilized, the thermal energy of the charge is fully utilized, and the upper block strip is completely within the reduction reaction temperature range, and the indirect reduction metallization rate of the charge through the upper portion reaches 70% or more; using hot charging and total oxygen The combination of smelting makes the heat distribution in the furnace reasonably balanced; the sensible heat recovery of the slag is combined with the top pressure recovery of the furnace top to jointly drive the generator to generate electricity, which improves the power generation efficiency.

Compared with the prior art, the present invention has the following advantages:

1. The coke with a temperature of 100-1200 °C, the sinter with a temperature of 100-1000 °C, and the hot mass with a temperature of 100-1400 °C are directly loaded into the ironmaking furnace, making full use of the sensible heat of the raw materials, which reduces the iron making. The fluctuation of the raw material temperature of the process saves the investment of the raw material cooling equipment.

Since coke does not undergo quenching, it eliminates environmental pollution caused by wet quenching, and at the same time eliminates stress damage caused by drastic changes in coke, and the strength of coke is increased, M40 is increased by 3%-8%, and M10 is decreased by 0.3- 0.8%, reducing the amount of coke and coke production.

2. Since the raw materials are charged into the furnace at high temperature, a large amount of physical heat is introduced. According to coke, sinter and pellets at 800 °C, the consumption of tons of iron is calculated as 0.3t, 1.28t and 0.32t respectively. The physical heat can reach 1.59GJ, which can compensate for the upper heat loss caused by insufficient gas in the iron smelting furnace during total oxygen smelting.

Because the upper part is heated by the charge, the upper block of the ironmaking furnace is entirely in the indirect reduction temperature range, so that the charge begins to indirectly reduce when it enters the ironmaking furnace, which relatively prolongs the time of the reduction reaction and improves the indirect reduction.

3. Injecting preheated gas from the upper exhaust gas port to 600-1100 °C coke oven gas to provide hydrogen-rich reducing gas, improve the reduction potential of the upper gas, improve the kinetic conditions of the upper reduction, and make the upper indirect reduction sufficient. Development, the metallization rate of the charge reached more than 90% when entering the lower part of the ironmaking furnace. Since the gaseous product of the hydrogen reduction charge is water, hydrogen-rich reduction also reduces CO2 emissions.

4. The traditional blast furnace adopts hot air blasting, the amount of ton of iron gas reaches 1600 cubic meters, of which N2 accounts for 1000 cubic meters. The invention blows industrial oxygen from the oxygen vent of the hearth, which greatly reduces the amount of gas generated in the hearth and reduces The gas permeability requirement for the column.

Simultaneous blowing of coke oven gas from the hearth can utilize the methane cracking in the coke oven gas to reduce the theoretical combustion temperature before the tuyere. The hydrogen generated in the cracking gas and the coke oven gas increase the hydrogen content in the hearth gas. The indirect reduction of hydrogen in the lower part can partially replace the direct reduction reaction of C, reducing the heat consumed by the direct reduction reaction, achieving the purpose of energy saving and coke saving. Injecting coke oven gas instead of blowing pulverized coal reduces the amount of slag brought in by a large amount of coal pulverized coal ash and the amount of slag brought by the additional alkalinity of the solvent, which can reduce the amount of slag slag and save energy. the goal of.

5. The indirect reduction of the upper part of the ironmaking furnace is fully developed, so that the metallization rate of the furnace material reaches 70% or more before entering the lower melting zone. In addition to a small amount of supplementary reduction, the furnace can basically complete the ironmaking by melting and carburizing. In the process, the carburizing reaction is advanced in advance due to the high metallization rate of the upper part, and the carburizing time of the hearth is also shortened, and the utilization coefficient of the ironmaking furnace can be greatly improved, and the same furnace capacity can reach 1.5 of the conventional blast furnace. More than double.

6. The low-boiling metals such as K, Na, Zn in the charge are reduced to metal at the upper part, and the high-temperature gas escapes out of the furnace, which reduces the accumulation of the loop and reduces the nodulation of the lining. The precipitation of the powder without alkaline earth metal also increases the gas permeability of the column.

7. The slag uses dry granulation technology to recover the waste heat. The steam generated by the boiler and the high-pressure gas at the top of the furnace jointly drive TRT power generation, which not only makes full use of the sensible heat of the blast furnace slag, but also saves water resources. Above t, the efficiency of single gas TRT power generation is improved.

C1‧‧‧ coke oven

C2‧‧‧High temperature coke conveying device

C3‧‧‧High temperature coke transfer bin

C4‧‧‧High temperature coke weighing hopper

C5‧‧‧Coke Oven Gas Purification System

S1‧‧‧Sintering machine

S2‧‧‧High temperature sinter conveying device

S3‧‧‧High temperature sinter transfer bin

S4‧‧‧High temperature sinter weighing scale

P1‧‧‧mine roasting machine

P2‧‧‧High temperature pellet conveyor

P3‧‧‧High temperature pellets transfer bin

P4‧‧‧High temperature pellets weighing bucket

1‧‧‧High temperature furnace material conveying device

2‧‧‧High temperature furnace roof

3‧‧‧iron furnace

4‧‧‧High temperature gas dust removal device

5‧‧‧Combined power generation unit

6‧‧‧ gas storage cabinet

7‧‧‧Dust spray cans

8‧‧‧ Gas pressurized fan

9‧‧‧ Gas pressurized fan

10‧‧‧Injection gas temperature control device

11‧‧‧Oxygen system

12, 13‧‧‧dust conveying device

14‧‧‧ slag iron separator

15‧‧‧Slag granulation

16‧‧‧heat exchanger boiler

17‧‧‧Fan

18‧‧‧Slag transport unit

19‧‧‧Iron water transport device

H1, H2, H3, H4‧‧‧ regenerative heat exchangers

F1, F2, F3, F4‧‧‧ bag dust removal device

Fig. 1 is a block diagram showing the hot charging and hot charging device of the ironmaking raw material of the present invention.

Fig. 2 is a block diagram showing the whole oxygen-rich hydrogen-rich gas iron making apparatus of the present invention.

The invention will be described and illustrated in more detail below with reference to the drawings and specific embodiments.

Example 1

In this embodiment, the iron-smelting raw material hot-steaming and charging device comprises a coke heat-sending and heating device, the coke hot-steaming and charging device comprises a coke oven C1, a high-temperature coke conveying device C2, a high-temperature coke transfer bin C3, and a high temperature. The coke weighing bucket C4, the high-temperature furnace material conveying device 1 and the high-temperature furnace top 2 are composed; wherein the coke oven C1 is connected to the high-temperature coke transfer bin C3 through the high-temperature coke conveying device C2, and the high-temperature coke weighing bucket C4 and high-temperature coke are The transfer bin C3 is connected through a pipe or a closed chute, and the high temperature coke weighing hopper C4 is connected to the high temperature charge conveying device 1 through a pipe or a closed chute, and the high temperature charge conveying device 1 is connected to the iron making furnace 3 through the high temperature resistant furnace top 2.

The high-temperature coke transfer bin C3 is a steel structure silo, the inner lining is an impact-resistant thermal insulation refractory material, or a combination of thermal insulation material and heat-resistant lining. The storage compartment inlet is provided with a sealing cover, and the sealing cover faces the silo side. Set insulation materials. The shape of the transfer bin C3 in the high temperature coke may be square, rectangular, elliptical, cylindrical or circular.

The high temperature charge conveying device 1 is a vertical level lifting device or a diagonal bridge lifting device. For example, it may be a closed high temperature chain plate machine, or may be a combination of a closed car and a diagonal bridge.

The method for hot charging and hot charging of the ironmaking raw material corresponding to the hot-steam hot charging device of the iron-making raw material of the embodiment comprises: a. the mature coke produced by the coke oven C1 is directly conveyed by the high-temperature coke conveying device C2 without quenching To the high temperature coke transfer bin C3; b, the high temperature coke transfer bin C3 as a buffer and insulation container for high temperature coke, high temperature coke through the high temperature coke weighing bucket C4, and then through the closed high temperature furnace material conveying device 1 In the high temperature resistant furnace top 2, the high temperature resistant furnace top 2 is placed into the iron making furnace 3 as required.

In the present embodiment, the ironmaking raw material further includes the same sintered ore and/or pellets as the prior art. The sinter and/or pellets can be added to the ironmaking furnace 3 in the same manner as in the prior art; the sinter and/or pellets can also be added to the closed high-temperature charge conveyor 1 and then transported through a closed high-temperature charge. The apparatus 1 feeds the sinter and/or pellets into the high temperature resistant furnace top 2, and then the high temperature resistant furnace top 2 is placed into the ironmaking furnace 3 as required.

In the present embodiment, the temperature at which the coke is charged is in the range of 100 ° C to 1200 ° C, and may be in the range of 300 ° C to 1000 ° C, preferably in the range of 500 ° C to 800 ° C. In this embodiment, the coke inlet temperature can be 300 ° C, 500 ° C, 800 ° C, 1000 ° C, 1200 ° C or at various temperature points in the above-mentioned coke inlet temperature range, and can reach the coke heat in the present invention. The purpose of sending hot clothes.

Example 2

The embodiment is basically the same as the first embodiment, except that the iron-smelting raw material hot-steaming and charging device of the embodiment further includes a sinter ore heat-steaming device, and the sintered ore-steaming and hot-storing device is sintered by a sintering machine S1. The ore conveying device S2, the high-temperature sintering ore transfer bin S3 and the high-temperature sintered ore weighing bucket S4 are composed; wherein the sintering machine S1 is connected to the high-temperature sintered ore transfer bin S3 through the high-temperature sintered ore conveying device S2, and the high-temperature sintered ore is called The measuring bucket S4 is connected with the high-temperature sintered ore transfer silo S3 through a pipeline or a closed chute, and the high-temperature sintered ore weighing bucket S4 is connected to the high-temperature charging material conveying device 1 through a pipeline or a closed chute, and the high-temperature charging material conveying device 1 passes through the high-temperature resistant furnace top 2 It is connected to the iron making furnace 3.

The high-temperature sinter ore transfer silo S3 is a steel structure silo, the inner lining is an impact-resistant thermal insulation refractory material, or a combination of thermal insulation material and heat-resistant lining, a sealing cover at the entrance of the silo, and a cover facing the silo Insulation material is provided on the side. The shape of the transfer bin S3 in the high-temperature sintered ore may be square, rectangular, elliptical, cylindrical or circular.

The method for hot charging and hot charging of the ironmaking raw material corresponding to the hot-steam hot charging device of the iron-making raw material of the embodiment comprises: a. the mature coke produced by the coke oven C1 is directly conveyed by the high-temperature coke conveying device C2 without quenching In the high temperature coke transfer bin C3, the high temperature sintered ore produced by the sintering machine S1 is transported from the closed high temperature sintered ore conveying device S2 to the high temperature sintered ore transfer bin S3; b, the high temperature coke transfer bin C3 and high-temperature sinter ore transfer silo S3 are used as buffer and insulation containers for high-temperature coke and high-temperature sinter, respectively. High-temperature coke and high-temperature sinter are respectively passed into the closed high-temperature furnace material conveying device 1 through the corresponding high-temperature weighing hopper, and then closed. The high-temperature furnace material conveying device 1 is fed into the high-temperature resistant furnace top 2, and then placed in the ironmaking furnace 3 by the high-temperature resistant furnace top 2 as required.

In this embodiment, the ironmaking raw material may further include a pellet of the same amount as that of the prior art. The pellets can be added to the ironmaking furnace 3 in the same manner as in the prior art; the pellets can also be added to the closed high-temperature furnace conveying device 1, and then the pellets can be sent to the high temperature through the closed high-temperature furnace conveying device 1. In the furnace top 2, the high temperature resistant furnace top 2 is then placed into the ironmaking furnace 3 as required.

In this embodiment, the temperature of the coke entering the furnace is in the range of 100 ° C to 1200 ° C, and may also be in the range of 300 ° C to 1000 ° C, preferably in the range of 500 ° C to 800 ° C; The furnace temperature may be in the range of 100 ° C to 1000 ° C, or may be in the range of 300 ° C to 900 ° C, preferably in the range of 500 ° C to 800 ° C. In this embodiment, the inlet temperature of each of the above raw materials can be 300 ° C, 500 ° C, 800 ° C, 900 ° C, 1000 ° C, 1200 ° C or at various temperature points within the temperature range of the above-mentioned coke and sintered ore. Moreover, the purpose of the hot charging and heating of the coke and the sintered ore in the present invention can be achieved.

Example 3

As shown in Fig. 1, it is a block diagram of the hot-steam hot charging device of the iron-making raw material of the present invention. The embodiment includes: a coke hot delivery hot charging device, a sinter hot charging hot charging device, and a pellet thermal conveying hot charging device.

The coke hot delivery hot charging device is composed of a coke oven C1, a high temperature coke conveying device C2, a high temperature coke transfer bin C3, a high temperature coke weighing hopper C4, a high temperature furnace material conveying device 1 and a high temperature resistant furnace top 2; Furnace C1 is connected to high temperature coke transfer bin C3 through high temperature coke conveying device C2, high temperature coke weighing bucket C4 is connected with high temperature coke transfer bin C3 through pipeline or closed chute, high temperature coke weighing bucket C4 and high temperature furnace material conveying device 1 connected by pipe or closed chute, high temperature furnace material conveying device 1 passes through high temperature furnace roof 2 is connected to the iron making furnace 3.

The sinter ore hot charging and charging device is composed of a sintering machine S1, a high-temperature sinter conveying device S2, a high-temperature sinter intermediate transfer sump S3 and a high-temperature sinter weighing hopper S4; wherein the sintering machine S1 passes through the high-temperature sinter conveying device S2 is connected with the high-temperature sinter ore transfer silo S3, and the high-temperature sintered ore weighing bucket S4 is connected with the high-temperature sintered ore transfer silo S3 through a pipeline or a closed chute, and the high-temperature sintered ore weighing bucket S4 and the high-temperature furnace feed conveying device 1 pass through the pipeline. Or closed chutes connected.

The pellet hot or hot charging device is composed of a pellet ore roasting machine P1, a high temperature pelletizing conveyor conveying device P2, a high temperature pelletizing ore transferring bin P3 and a high temperature pelletizing ore weighing bucket P4, and the pelletizing ore is roasting. The machine P1 is connected to the high temperature pellet ore transfer bin P3 through the high temperature pellet conveyor P2, and the high temperature pellet ore bucket P4 is connected to the high temperature pellet ore transfer bin P3 through a pipe or a closed chute, and the high temperature pellet The mine weighing hopper P4 is connected to the high temperature charge conveying device 1 through a pipe or a closed chute.

The above three kinds of transfer silos C3, S3 and P3 are steel structure silos, the inner lining is impact-resistant thermal insulation refractory material, or the combination of thermal insulation material and heat-resistant lining, the sealing inlet of the silo is provided with a sealing cover, and the cover is facing Insulation material is provided on one side of the warehouse. The shapes of the above three transfer silos C3, S3, and P3 may be square, rectangular, elliptical, cylindrical or circular.

The high temperature charge conveying device 1 is a vertical level lifting device or a diagonal bridge lifting device. For example, it may be a closed high temperature chain plate machine, or may be a combination of a closed car and a diagonal bridge.

Example 4

Referring to Fig. 1, it is a block diagram of the hot-steam hot charging device of the iron-making raw material of the present invention. The embodiment of the method for hot charging and hot charging of the iron-making raw material of the present invention comprises the following steps: 1) The mature coke produced by the coke oven C1 is directly sent to the high temperature coke transfer bin C3 without being quenched, and the high temperature sintered ore produced by the sintering machine S1 is not cooled. The high-temperature sinter conveying device S2 is directly transported to the high-temperature sinter ore transfer silo S3, and the high-temperature pellets produced by the pellet ore roasting machine P1 are not cooled, and are directly transported through the closed high-temperature pellet conveyor device P2. To the high temperature pellets in the transfer bin P3; 2) the above three transfer silos C3, S3, P3 as high temperature coke, sinter and pelletized buffer and insulation containers, high temperature charge through 3 high temperatures The weighing hoppers C4, S4, and P4 are sequentially fed into the high-temperature resistant bell-free top 2 through the closed high-temperature furnace material conveying device 1 in batches, and then placed in the iron-making furnace 3 by the high-temperature resistant bellless furnace top 2 as required. 3) Using the buffering and heat preservation effects of three kinds of transfer silos C3, S3 and P3, the temperature of the coke is controlled to be 100-1200 ° C, and the temperature of the sinter is 100-1000 ° C. The furnace temperature is 100-1400 °C. Here, the temperature of the coke can be controlled to 300-1000 ° C, the temperature of the sinter can be controlled to 300-900 ° C, the temperature of the pellet can be controlled to 300-1000 ° C, the above three raw materials into the furnace The temperature may preferably be 500-800 °C. In this embodiment, the inlet temperature of each of the above raw materials can be 300 ° C, 500 ° C, 800 ° C, 900 ° C, 1000 ° C, 1200 ° C, 1400 ° C or in the above-mentioned coke, sintered ore and pellets The temperature points of the present invention can be achieved at various temperature points within the range.

Ironing with the apparatus and method of Example 1, Example 2, Example 3 or Example 4 achieved the following beneficial effects:

Reduce the coke ratio by 16.3%, increase the blast furnace output by 30%, improve the quality of pig iron, and reduce the foundation construction. Prepare investment and increase investment ratio.

Example 5

Referring to Fig. 2, which is a block diagram of the whole oxygen-rich hydrogen-rich gas iron making apparatus of the present invention, the whole oxygen-rich hydrogen-rich gas iron making apparatus of the present invention comprises: a hot-steam hot charging device for iron making raw materials, an iron making furnace 3, and a furnace Top gas system, coke oven gas injection system, dust injection system, slag dry granulation and waste heat recovery system and oxygen system. The hot-steam hot charging device of the iron-making raw material is connected to the iron-making furnace 3 through the high-temperature resistant furnace top 2, and the top gas system is connected to the iron-making furnace 3 through a pipeline, and the coke oven gas injection system is connected to the iron-making furnace 3 through the pipeline. The dust blowing system is connected to the ironmaking furnace 3 through a pipeline, and the slag dry granulation and the waste heat recovery system are connected to the ironmaking furnace 3 through the slag iron trench, and the oxygen system 11 is connected to the ironmaking furnace 3 through the pipeline. Among them, the ironmaking furnace 3 is provided with two rows of air outlets, which are respectively arranged in the lower row of oxygen outlets in the lower part of the ironmaking furnace, and in the upper middle part of the ironmaking furnace and the upper row of gas outlets above the root of the soft melting zone.

Ironmaking raw material hot delivery hot charging device consists of coke oven C1, sintering machine S1, pelletizing roasting machine P1, high temperature coke conveying device C2, high temperature sintering ore conveying device S2, high temperature pelletizing conveyor device P2, high temperature coke transfer material Warehouse C3, high temperature sintered ore transfer bin S3, high temperature pellet ore transfer bin P3, high temperature coke weighing bucket C4, high temperature sintered ore weighing bucket S4, high temperature pelletizing scale weighing bucket P4, high temperature furnace material conveying device 1 and the high temperature resistant furnace top 2; the coke oven C1 is connected to the high temperature coke transfer bin C3 through the high temperature coke conveying device C2, and the sintering machine S1 is connected to the high temperature sintered ore transfer bin S3 through the high temperature sintered ore conveying device S2, the ball The pelletizing and roasting machine P1 is connected to the high temperature pelletizing ore transfer bin P3 through the high temperature pelletizing conveyor P2, and the high temperature weighing buckets C4, S4 and P4 are respectively associated with the corresponding coke, sintered ore and pelletizing intermediates. Cylinders C3, S3, P3 are connected by pipes or closed chutes, high temperature The weighing hoppers C4, S4, and P4 are connected to the high-temperature furnace material conveying device 1 through a pipe or a closed chute, and the high-temperature furnace material conveying device 1 is connected to the ironmaking furnace 3 through the high-temperature resistant furnace top 2.

The top gas system is composed of a furnace top high-temperature gas dust removing device 4, a regenerative heat exchange device H1, H2, H3, H4, a bag dust removing device F1, F2, F3, F4, a combined power generating device 5, and a gas storage cabinet 6. The ironmaking furnace 3 is connected to the top of the furnace high temperature gas dedusting device 4 through the pipeline, the furnace top high temperature gas dust removing device 4, the regenerative heat exchanging device H1, H2, H3, H4, the bag dust removing device F1, F2, F3, F4, combined power generation The device 5 and the gas storage cabinet 6 are sequentially connected in series through a pipe. In addition, the regenerative heat exchange device can be arranged 4-6, the bag dust removal device can be set 4-30, and the regenerative heat exchanger can also be a heat exchange heat exchanger.

Coke oven gas injection system consists of coke oven C1, coke oven gas purification system C5, gas pressure fan 8, gas pressure fan 9, regenerative heat exchange device H1, H2, H3, H4 and injection gas temperature control device 10 The composition; wherein, the coke oven C1 is connected to the coke oven gas purification system C5 through the pipeline, and the gas purified by the coke oven gas purification system C5 is divided into two paths, one way is sequentially connected with the gas pressurized fan through the pipeline, and the regenerative heat exchange is performed. The devices H1, H3 and the gas-fired gas temperature regulating device 10 are connected, and then connected to the upper gas vents of the upper part of the iron-making furnace 3 and above the root of the soft-melting belt through the pipeline, and the other system is sequentially connected with the gas through the pipeline. The pressurizing machine 9 is connected to the regenerative heat exchanging devices H2 and H4, and then connected to the lower exhaust oxygen tuyere provided at the lower portion of the iron making furnace 3.

The oxygen system 11 is connected to the ironmaking furnace 3 through a pipe.

The dust blowing system is composed of a furnace top high-temperature gas dust removing device 4, a bag dust removing device F1-F4 and a dust blowing blowing tank 7; the topping high-temperature gas dust removing device 4 is connected to the dust blowing and blowing tank 7 through the dust conveying device 12, and the bag is Dust removal device F1-F4 is transported through dust The 13 is connected to the dust blowing tank 7. The dust blowing tank 7 is connected to the lower oxygen vent of the lower portion of the iron making furnace 3.

The slag dry granulation and waste heat recovery system is mainly composed of a slag iron separator 14, a slag granulation and heat exchange device 15, a boiler 16, a fan 17 and a combined power generation device 5; the slag iron flowing out from the ironmaking furnace 3 passes through the molten iron The ditch flows into the slag iron separator 14 and is divided into a slag liquid flow and a molten iron flow. The molten iron flows through the iron water ditch and is connected to the molten iron transport device 19, and the slag liquid flow is connected to the slag granulation and heat exchange device 15 through the slag ditch, and the fan 17 It is connected to the heat exchange device 15 through the pipeline and the slag granulation. The slag granulation and heat exchange device 15 is connected to the boiler 16 through the pipeline, and the boiler 16 is connected to the slag waste heat through the pipeline and the combined power generation device 5, and the slag granulation and heat exchange The device 15 is connected to the slag transport unit 18 through a discharge pipe.

The apparatus of the present embodiment can achieve a charging temperature of coke, sintered ore and pellets of 100-1200 ° C, 100-1000 ° C and 100-1400 ° C, respectively.

Example 6

Referring to the block diagram of the whole oxygen-rich hydrogen-rich gas iron making of the present invention with reference to Fig. 2, the production process of the whole oxygen-rich hydrogen-rich gas iron making method of the present invention is carried out as follows:

The mature red coke introduced by Coke Oven C1 is not quenched and directly conveyed to the high temperature coke transfer bin C3 through the high temperature coke conveying device C2. The high temperature sintered ore produced by the sintering machine S1 is not cooled by the cold machine or the ring cooler. The high-temperature sinter conveying device S2 is transported to the high-temperature sinter ore transfer silo S3, and the high-temperature pellets produced by the pellet ore roasting machine P1 are not cooled by the belt cooler or the ring cooler, and directly pass through the high-temperature pellet conveyor device P2. It is transported to the high-temperature pellets in the transfer bin P3, and the high-temperature weighing hoppers C4, S4, and P4 are respectively disposed under the transfer silos of the three kinds of charge materials, and the three kinds of charge materials are sequentially added to the high-temperature furnace material conveying device 1 according to the ratio, and the high temperature is high. The charge conveying device 1 raises the high temperature charge to a high resistance In the top 2 of the warm furnace, the charge is placed into the ironmaking furnace 3 according to the requirements of the fabric through the high temperature resistant furnace top 2.

The high-temperature intermediate transfer bins C3, S3, and P3 are steel structure silos, and the inner liner of the high-temperature transfer silo is an impact-resistant thermal insulation refractory material, or a combination of thermal insulation material and heat-resistant lining, the silo The inlet is provided with a sealing cover, and the sealing cover is provided with a heat insulating material on the side facing the silo. The high-temperature furnace material conveying device 1 is a closed high-temperature chain plate machine, or a combination of a closed car and a diagonal bridge.

The invention utilizes the buffering and heat preservation effect of the high-temperature transfer silos C3, S3 and P3, and can control the coke temperature entering the ironmaking furnace to be 100-1200 ° C, the sinter temperature is 100-1000 ° C, and the pellet temperature is 100- 1400 ° C. Among them, the temperature of the coke can be controlled to 300-1000 ° C, the temperature of the pellets can be 300-1000 ° C, and the temperature of the sinter can be controlled to 300-900 ° C. Preferably, the temperature of the coke into the furnace can be controlled to be 500-800 ° C; the temperature of the sinter can be controlled to 500-800 ° C; the temperature of the pellets can be controlled to 500-800 ° C. In this embodiment, the inlet temperature of each of the above raw materials can be 300 ° C, 500 ° C, 800 ° C, 900 ° C, 1000 ° C, 1200 ° C, 1400 ° C or in the above-mentioned coke, sintered ore and pellets Each temperature point within the range can achieve the purpose of hot charging of the raw material in the present invention.

The ironmaking furnace is provided with two exhaust ports, namely a lower lower oxygen outlet and a lower middle upper gas outlet; when the charge reaches a certain height in the furnace, the blowing is started from the lower oxygen outlet disposed in the lower part of the ironmaking furnace. Oxygen, while injecting a certain proportion of hydrogen-rich flammable gas, that is, blowing 200-600 cubic meters / ton of iron oxygen and 20-300 cubic meters / ton of iron preheated hydrogen-rich flammable gas; when the furnace surface is normal In the case of the feed line, 100-600 cubic meters / ton of iron preheated hydrogen-rich combustible gas is blown from the upper gas gas vents provided at the upper and lower portions of the ironmaking furnace 3 and above the root of the soft melting zone. The hydrogen-rich combustible gas in this embodiment is Coke oven gas. Here, the hydrogen-rich combustible gas may also be natural gas, and the hydrogen-rich combustible gas is injected at a temperature of 600 to 1200 ° C.

The high temperature gas discharged from the upper part of the ironmaking furnace is at 250-1200 ° C, and is dedusted by the high temperature gas dust removal device 4 at the top of the furnace, and then enters the regenerative heat exchange device H1 or H3 (alternating between H1 and H3) and H2 or H4 (H2 and H4). Alternate use) heat exchange to recover the sensible heat of the gas. Among them, the regenerative heat exchange devices H1 and H3 (alternatingly used by H1 and H3) are used for preheating the hydrogen-rich flammable gas injected into the furnace from the upper gas vents above the root of the soft-melt zone in the middle and lower portions of the ironmaking furnace 3. The regenerative heat exchanging devices H2 and H4 (alternatingly using H2 and H4) are used to preheat the hydrogen-rich combustible gas injected into the furnace from the lower oxygen outlet of the lower portion of the ironmaking furnace 3. Here, the number of regenerative heat exchange devices may be 4-6.

After the gas discharged from the top of the furnace is exchanged by 4-6 regenerative heat exchange devices, the temperature drops below 200 °C, and then enters the bag dust removal device F1, F2, F3, F4 for fine dust removal. Here, the number of bag dust removing devices may be 4-30. The dust-removed gas enters the combined power generation unit 5 to generate electricity, and the gas finally enters the gas storage cabinet 6 for use by gas users such as coking, sintering, pellet production, and living.

The dust removal ash generated by the furnace top high-temperature gas dust removing device 4 is periodically added to the dust blowing tank 7 through the dust conveying device 12, and the dust removing ash generated by the bag dust removing devices F1, F2, F3, and F4 is periodically sent to the dust blowing through the dust conveying device 13. In the tank 7, the dust blowing tank 7 is sprayed into the iron making furnace 3 from the lower oxygen outlet of the lower portion of the iron making furnace to eliminate dust pollution.

The coke oven gas produced by the coke oven C1 is purified by the purification system C5 and then sprayed into the ironmaking furnace 3 in two ways. The pressure is pressurized by the gas pressure fan 8 and then exchanged by the regenerative heat exchange device H1 or H3 (H1 and H3 is used alternately), the temperature rises to 600-1100 ° C, and then sprayed The gas-fired temperature adjustment device 10 is tempered, and then sprayed into the ironmaking furnace 3 from the upper gas vent. The gas-fired temperature regulating device 10 is designed to ensure that the gas injected into the upper gas tuyere has a temperature matching the process requirements. The other gas pressurizing fan 9 is pressurized, and then exchanges heat through the regenerative heat exchange device H2 or H4 (H2 and H4 are used alternately), and is then injected into the iron making furnace 3 from the lower oxygen vent.

The iron mouth provided in the lower part of the ironmaking furnace 3 discharges the high temperature liquid slag and the molten iron, is separated by the slag iron separator 14, the molten iron enters the molten iron transport device 19, and the slag enters the slag granulation and heat exchange device 15, and the granules The slag after the heat exchange is transported out through the slag transport device 18, and the residual heat of the slag is brought into the boiler 16 by the wind blown by the blower 17, generating high-temperature and high-pressure steam, and the combined power generation device 5 is driven in conjunction with the top gas to obtain the heat energy of the slag. Make full use of it.

According to the iron making apparatus of the fifth embodiment and the iron making method of the sixth embodiment, the following advantageous effects are obtained:

The energy consumption of the ironmaking process is reduced by 10-50%; the production of molten iron is increased by 50-200%; the land resources are saved, and the construction investment is reduced; the CO2 emission reduction is 15-40%; the new water consumption is reduced by more than 80%.

In Examples 3, 4, 5 and 6, the hot-steam hot-packing device or the hot-steam hot-packing method or the iron-smelting method or the iron-smelting device of the present invention simultaneously includes hot heat of coke, sintered ore and pellets. The device of the present invention may include only the coke hot charging and unloading device, and may also include a sinter hot charging device or a pelletizing hot charging device, including the coke hot charging device. The method of the present invention may include only the hot-steaming of the coke, and may also include the hot-steam hot charging or the hot-steam hot charging of the pellets, including the hot charging of the coke.

In the present invention, the coke inlet temperature is in the range of 100 ° C to 1200 ° C, In the range of 300 ° C ~ 1000 ° C, preferably in the range of 500 ° C ~ 800 ° C; the temperature of the sintered ore in the range of 100 ° C ~ 1000 ° C, can also be in the range of 300 ° C ~ 900 ° C Preferably, it is in the range of 500 ° C to 800 ° C; the inlet temperature of the pellets is in the range of 100 ° C to 1400 ° C, and may also be in the range of 300-1000 ° C, preferably, 500-800 ° C. . Moreover, in the present invention, the inlet temperature of each raw material can be 100 ° C, 300 ° C, 500 ° C, 800 ° C, 900 ° C, 1000 ° C, 1200 ° C, 1400 ° C or in the above-mentioned coke and sinter temperature range Each of the temperature points in the interior can achieve the purpose of hot-heating the raw materials in the present invention.

In the present invention, the temperature of the coke, sinter and pellets is mainly considered in three aspects: 1. The degree of utilization of sensible heat of high temperature coke, sinter and pellets, which can reflect the energy saving of the present invention. Effect; 2. The requirements for the thermal insulation performance of the refractory material, which is related to the cost-effectiveness of the invention; 3. The influence of high temperature coke, sinter and pellets on the temperature distribution of the upper part of the ironmaking furnace, the upper temperature of the suitable ironmaking furnace The distribution can prolong the time of the reduction reaction and improve the indirect reduction effect. Specifically, when the temperature of the coke, sinter, and pellets is higher, the sensible heat utilization is more sufficient, but the insulation performance of the refractory is required to be higher. Therefore, in the present invention, considering the energy saving effect, the cost benefit, and the indirect reduction effect, the charging temperatures of the coke, the sinter, and the pellets can be sequentially controlled at 300-1000 ° C, 300-900 ° C, and 300-1000 ° C, respectively. Within the scope of the present invention, preferably, the temperature of the coke, sinter and pellets can be controlled in the range of 500-800 °C.

Further, it will be understood by those skilled in the art that in the present invention, the ironmaking furnace may include a blast furnace and other types of ironmaking furnaces using coke. Further, in the present invention, the high temperature resistant roof includes a high temperature resistant bellless top and a high temperature bell top.

The invention combines coking, pelletizing and sintering with an ironmaking furnace, and directly feeds red hot coke, pellets and sintered ore into a new ironmaking furnace, adopts full oxygen smelting, and is in the lower oxygen tuyere and the furnace body. The lower part simultaneously blows hydrogen-rich high-temperature coke oven gas, which not only makes full use of the sensible heat of the ironmaking charge, but also utilizes the sensible heat brought by the high-temperature furnace material to eliminate the problem of insufficient heat in the upper part caused by pure oxygen smelting, so that the iron-containing charge is in the The upper part achieves a metallization rate of more than 70% through indirect reduction, fully utilizes the chemical energy of the gas, reduces or eliminates the carbon consumption caused by the direct reduction of the lower part, and achieves the purpose of greatly saving energy and reducing emissions. At the same time, the invention also saves investment in cooling equipment, makes the layout more compact, saves land resources, saves investment, and achieves efficient, energy-saving and environmentally friendly production effects.

While the present invention has been shown and described with reference to the embodiments of the embodiments of the invention All will be within the scope of the invention.

C1‧‧‧ coke oven

C2‧‧‧High temperature coke conveying device

C3‧‧‧High temperature coke transfer bin

C4‧‧‧High temperature coke weighing hopper

C5‧‧‧Coke Oven Gas Purification System

S1‧‧‧Sintering machine

S2‧‧‧High temperature sinter conveying device

S3‧‧‧High temperature sinter transfer bin

S4‧‧‧High temperature sinter weighing scale

P1‧‧‧mine roasting machine

P2‧‧‧High temperature pellet conveyor

P3‧‧‧High temperature pellets transfer bin

P4‧‧‧High temperature pellets weighing bucket

1‧‧‧High temperature furnace material conveying device

2‧‧‧High temperature furnace roof

3‧‧‧iron furnace

4‧‧‧High temperature gas dust removal device

5‧‧‧Combined power generation unit

6‧‧‧ gas storage cabinet

7‧‧‧Dust spray cans

8‧‧‧ Gas pressurized fan

9‧‧‧ Gas pressurized fan

10‧‧‧Injection gas temperature control device

11‧‧‧Oxygen system

12, 13‧‧‧dust conveying device

14‧‧‧ slag iron separator

15‧‧‧Slag granulation

16‧‧‧heat exchanger boiler

17‧‧‧Fan

18‧‧‧Slag transport unit

19‧‧‧Iron water transport device

H1, H2, H3, H4‧‧‧ regenerative heat exchangers

F1, F2, F3, F4‧‧‧ bag dust removal device

Claims (19)

An iron-smelting raw material hot-steaming and hot-packing device comprises: a coke hot-feeding and charging device, wherein the coke hot-steaming and charging device comprises a coke oven, a high-temperature coke conveying device, a high-temperature coke transfer bin, and a high temperature a coke weighing hopper, a high temperature furnace material conveying device and a high temperature resistant furnace top; wherein the coke oven is connected to the high temperature coke transfer hopper through the high temperature coke conveying device, the high temperature coke weighing hopper and the high temperature The coke transfer bin is connected through a pipe or a closed chute, and the high-temperature coke weighing hopper is connected to the high-temperature furnace conveying device through a pipe or a closed chute, and the high-temperature furnace conveying device transmits the high-temperature furnace top and an ironmaking furnace Connected, the coke temperature entering the ironmaking furnace is 300 ° C ~ 1000 ° C. The apparatus of claim 1, wherein the apparatus further comprises a sintered ore hot charging device and/or a pelletizing hot charging device; wherein the sintered ore is The hot delivery hot charging device is composed of a sintering machine, a high temperature sintered ore conveying device, a high temperature sintered ore transfer bin and a high temperature sintered ore weighing hopper, and the sintering machine passes through the high temperature sintered ore conveying device and the a high-temperature sinter ore transfer bin connected to the high-temperature sinter ore transfer bin is connected through a pipe or a closed chute, the high-temperature sintered ore weighing hopper and the high-temperature charge conveying device are through a pipe or The closed chute is connected, and the temperature of the sinter entering the ironmaking furnace is 300 ° C ~ 900 ° C; the pellet hot or hot charging device is a pelletizing roaster, a high temperature pellet conveying device, a high temperature pellet The mine transfer bin and a high-temperature pellet ore weighing hopper, the pellet ore roaster is connected to the high-temperature pellet ore transfer bin through the high-temperature pellet ore conveying device, and the high-temperature pellet is called Duty bucket and the high temperature pellet ore transfer bin Through The high temperature pelletizing scale weighing bucket is connected to the high temperature furnace material conveying device through a pipeline or a closed chute, and the pelletizing temperature entering the ironmaking furnace is 300 ° C to 1000 ° C. The hot-selling hot-steaming device of the iron-making raw material according to the first or second aspect of the patent application, wherein the high-temperature coke intermediate transfer bin, the high-temperature sintered ore transfer bin or the high-temperature pellet ore transfer bin The inner lining is an impact-resistant thermal insulation material, and a sealing cover is disposed in the opening of each of the intermediate transfer bins, and the sealing cover is provided with a heat insulating material toward each of the transfer silos, and the shape of each of the transfer silos is It is square, rectangular, elliptical, cylindrical or circular. The hot-selling material hot-steaming device according to the first or second aspect of the patent application, wherein the high-temperature furnace material conveying device is a vertical level lifting device or a diagonal bridge lifting device. The method for hot charging and hot charging of ironmaking raw materials suitable for the hot-spot hot-steaming device of the iron-making raw material according to claim 1, which comprises the following steps: the mature coke produced by the coke oven is not quenched but is a high-temperature coke conveying device is directly transported into a high-temperature coke transfer bin; and the high-temperature coke transfer bin is used as a buffer and heat preservation container for high-temperature coke, and the high-temperature coke is passed through a high-temperature coke weighing hopper, and then closed A high-temperature furnace material conveying device is fed into a high-temperature resistant furnace roof, and then the high-temperature furnace roof is placed into an ironmaking furnace as required, and the coke temperature entering the ironmaking furnace is 300 ° C to 1000 ° C. The method for hot charging and hot charging of ironmaking raw materials according to claim 5, further comprising the steps of: transporting the high-temperature sintered ore produced by a sintering machine from a closed high-temperature sintering ore conveying device to a high-temperature sintered ore In the transfer silo; and the high-temperature sintered ore transfer silo is used as a buffer and heat preservation container for the high-temperature sintered ore, and the high-temperature sintered ore is passed through a high-temperature sintered ore weighing bucket, and then sent through the closed high-temperature furnace feed conveying device. The high temperature resistant furnace top is then placed into the ironmaking furnace as required by the high temperature resistant furnace top; the sinter temperature entering the ironmaking furnace is 300 ° C to 900 ° C. The method for hot charging and hot charging of iron-making raw materials according to claim 5, further comprising the steps of: transporting the high-temperature pellets produced by a pellet ore roasting machine through a closed high-temperature pellet conveying device; To the high temperature pellets in the transfer bin; and the high temperature pellets in the transfer bin as a buffer and insulation container for the high temperature pellets, the high temperature pellets are weighed through a high temperature pellet, and then The closed high temperature furnace material conveying device is fed into the high temperature resistant furnace top, and then the high temperature resistant furnace top is placed into the ironmaking furnace as required; the pelletizing temperature entering the ironmaking furnace is 300 ° C to 1000 ° C . The hot-selling method for iron-making raw materials according to claim 6, wherein the method further comprises the steps of: transporting the high-temperature pellets produced by a pellet ore roasting machine through a closed high-temperature pellet conveyor; To the high temperature pellets in the transfer bin; and the high temperature pellets in the transfer bin as a buffer and insulation container for the high temperature pellets, the high temperature pellets are weighed through a high temperature pellet, and then The closed high temperature furnace material conveying device is fed into the high temperature resistant furnace top, and then the high temperature resistant furnace top is placed into the ironmaking furnace as required; the pelletizing temperature entering the ironmaking furnace is 300 ° C to 1000 ° C . An all-oxygen-rich hydrogen-rich gas iron making device comprising an iron-making furnace, a hot-feeding hot-steaming device for iron-making raw materials as described in claim 1 or 2, a top gas system, and a coke oven a gas injection system, a dust blowing system, a slag dry granulation and waste heat recovery system, and an oxygen system; wherein the ironmaking raw material hot charging and heating device is connected to the ironmaking furnace through a high temperature resistant furnace top The top gas system is connected to the ironmaking furnace through a pipeline, and the coke oven gas injection system is connected to the ironmaking furnace through a pipeline, and the dust blowing system is connected to the ironmaking furnace through a pipeline. The slag dry granulation and waste heat recovery system is connected to the ironmaking furnace through a slag iron ditch, and the oxygen system is connected to the ironmaking furnace through a pipeline, and the ironmaking furnace is provided with two rows of air outlets, respectively a lower exhaust oxygen outlet disposed at a lower portion of the ironmaking furnace and an upper exhaust gas vent disposed at a lower portion of the ironmaking furnace and above the root of the soft melting zone. The oxygen-rich hydrogen-rich gas iron making device according to claim 9, wherein the top gas system is composed of a furnace top high-temperature gas dust removing device, 4 to 6 regenerative heat exchangers, and 4 to 30 bags. a dust removing device, a combined power generating device and a gas storage cabinet; the iron making furnace is connected to the top high temperature gas dust removing device through a pipeline, the top high temperature gas dust removing device, the regenerative heat exchanging device, and the bag dusting The device, the combined power generating device and the gas storage cabinet are sequentially connected in series through a pipeline. The oxygen-rich hydrogen-rich gas iron making device according to claim 9, wherein the coke oven gas injection system is a coke oven, a coke oven gas purification system, a gas pressure fan, and a regenerative heat exchange. The utility model is composed of a heat device and a gas injection temperature regulating device; the coke oven is connected to the coke oven gas purification system through a pipeline, and the gas purified by the coke oven gas purification system is divided into two paths, one way is sequentially through the pipeline And connected to the gas pressure fan, the regenerative heat exchange device and the gas injection temperature regulating device, and then connected to the upper exhaust gas vent disposed at a lower portion of the ironmaking furnace and above the root of the soft melting zone through a pipe. The other circuit is sequentially connected to the gas pressure fan and the regenerative heat exchange device through a pipeline, and then connected to the lower oxygen vent which is disposed at a lower portion of the ironmaking furnace. The whole oxygen-rich hydrogen-rich gas iron making device according to claim 9, wherein the dust blowing system is composed of a furnace top high-temperature gas dust removing device, a bag dust removing device and a dust blowing blowing tank; The top high-temperature gas dust removing device is connected to the dust blowing blow tank through a dust conveying device, and the bag dust removing device is connected to the dust blowing blowing tank through the dust conveying device, and the dust blowing blowing tank is connected to the iron making furnace. The whole oxygen-rich hydrogen-rich gas iron making device according to claim 9, wherein the slag dry granulation and waste heat recovery system comprises a slag iron separator, a slag granulation and heat exchange device, a boiler, and a a fan and a combined power generating device; the slag iron flowing out of the ironmaking furnace flows into the slag iron separator through a molten iron ditch, and is divided into a slag liquid flow and a molten iron flow, the iron The water flows through the iron gutter and is connected to a molten iron transport device, and the slag liquid flow is connected to the slag granulation and heat exchange device through the slag ditch, and the fan is connected to the slag granulation and the heat exchange device through the pipe. The slag granulation and heat exchange device is connected to the boiler through a pipeline, and the boiler is connected to the combined power generation device through a pipeline, and the slag granulation and heat exchange device is connected to a slag transport device through a discharge pipe. The all-oxygen-rich hydrogen-rich gas iron making device according to claim 10, wherein the regenerative heat exchange device is a regenerative heat exchanger or a heat exchange heat exchanger. An all-oxygen-rich hydrogen-rich gas iron-making method comprising the steps of: 1) performing a hot-steaming and hot-packing method of the iron-making raw material as described in claim 5, 6, 6, or 8; An ironmaking furnace is provided with two exhaust vents, which are respectively a lower exhaust oxygen outlet disposed at a lower portion of the ironmaking furnace and an upper exhaust gas vent disposed at a lower portion of the ironmaking furnace above the root of the soft melting zone; The lower oxygen vent is blown with 200-600 cubic meters / ton of iron oxygen and 20-300 cubic meters / ton of iron preheated hydrogen-rich combustible gas, while spraying 100-600 cubic meters / ton through the upper exhaust gas vent The hydrogen-rich combustible gas preheated by iron, the hydrogen-rich combustible gas is coke oven gas or natural gas, and the injection temperature of the hydrogen-rich combustible gas is controlled at 600-1200 ° C; 3) the temperature of the gas discharged from the top of the iron-making furnace is 250-1200 ° C, first through the furnace top high temperature gas dust removal device of the iron furnace, and then through 4-6 regenerative heat exchangers to recover the sensible heat of the gas, of which 2-3 regenerative heat exchangers Preheating the hydrogen-rich combustible gas injected into the furnace from the oxygen tuyere, and another 2-3 of the regenerative heating The heat device is used for preheating the hydrogen-rich combustible gas injected into the furnace from above the root of the soft melt zone; 4) the temperature of the gas discharged from the top of the iron-smelting furnace through the heat exchange of the 4-6 regenerative heat exchange devices Drop to below 200 °C, finely remove dust through 4-30 bag dust removal devices, clean gas for coking, sintering, pellet production or daily use; 5) the furnace top high-temperature gas dust removing device of the ironmaking furnace and the dust collected by the 4-30 bag dust removing devices are sprayed into the iron making furnace from the oxygen tuyere of the iron making furnace through a dust blowing blow tank. Eliminating dust pollution; and 6) the high temperature liquid slag produced by the ironmaking furnace is granulated by a slag granulation and heat exchange device, and the recovered slag sensible heat system generates high pressure steam through the boiler, and the high pressure discharged from the top of the ironmaking furnace The gas combined drive a combined power generation unit to generate electricity. The hot-spot hot-steaming device for iron-making raw materials according to claim 1 or 2, wherein the coke is charged at a temperature of 500-800 ° C, and the temperature of the sintered ore is 500-800 ° C, The pelletizing temperature of the pellets is 500-800 °C. The oxygen-rich hydrogen-rich gas iron making device according to claim 9, wherein the coke is charged at a temperature of 500-800 ° C, and the temperature of the sintered ore is 500-800 ° C, and the pellet is The furnace temperature is 500-800 °C. The method for hot charging and hot charging of an ironmaking raw material according to the fifth, sixth, seventh or eighth aspect of the patent application, wherein the coke is charged at a temperature of 500-800 ° C, and the sintered ore is charged into the furnace. The temperature is 500-800 ° C, and the pelletizing temperature of the pellet is 500-800 ° C. The method of claim 1, wherein the coke is charged at a temperature of 500-800 ° C, and the temperature of the sintered ore is 500-800 ° C, and the pellet is The furnace temperature is 500-800 °C.