WO2017185857A1

WO2017185857A1 - Flash furnace having side-blown molten pool sections

Info

Publication number: WO2017185857A1
Application number: PCT/CN2017/074025
Authority: WO
Inventors: 李效东; 夏明�; 邱江波; 黄小兵
Original assignee: 天津闪速炼铁技术有限公司
Priority date: 2016-04-28
Filing date: 2017-02-19
Publication date: 2017-11-02
Also published as: CN105716423B; CN105716423A

Abstract

A flash furnace having side-blown molten pool sections, comprising a reaction tower (1). At least one molten pool (2) is provided below the reaction tower (1); each molten pool (2) is provided with a side-blown molten pool section having an inner width of less than 3 m; a side-blown arrangement is provided on a side surface of the side-blown molten pool section; a slag discharge port is provided at a tail end of the side-blown molten pool section; the side-blown molten pool section is located between the slag discharge port and the reaction tower (1). The flash furnace further comprises an uptake flue (3) that is in communication with the reaction tower (1) by means of the molten pool (2). By providing a side-blown molten pool section having an inner width of less than 3 m, all portions of a molten pool (2) can be directly affected by side blowing, and a liquid melt environment with good flowability is formed by the molten pool (2), thereby implementing functions such as slag formation, and the settling, stratification, and discharging of slag and metal. In addition, the arrangement of side blowing can also provide a reducing agent for the molten pool (2) to complete the reduction of the remaining metal oxides to be smelted in a slag layer so as to improve the recovery of metal.

Description

Flash furnace with side blowing pool section

Technical field

The invention belongs to the field of metallurgy, and in particular relates to a flash furnace with a side blowing pool section.

Background technique

Flash metallurgy has only been used in the smelting of sulfide ore from invention to the present, and has not been applied to the smelting of oxidized ore. For example, flash copper smelting is a powdery copper sulphide concentrate after drying. After the concentrate nozzle is fully mixed with the oxygen-enriched air, it is sprayed into the flash furnace, and the thermal dissociation and oxidation reaction are carried out in the high-temperature reaction tower to partially oxidize and slag the copper in the copper concentrate to produce ice with higher copper content. copper. Since the reaction of sulfide and oxygen releases a large amount of heat, there is no need to additionally add heat to the molten pool.

The schematic diagram of the structure of the traditional sulfide mine flash furnace is shown in Figure 1.

In the design of the traditional Outokumpu sulfide mine flash furnace, the inner width of the molten pool is determined according to the inner diameter of the reaction tower, generally 1-2 meters of the inner diameter of the reaction tower, and its top view is shown in Fig. 2.

The principle of oxidized ore flash metallurgy is that the mineral powder is in the process of floating and falling in the hot flash furnace reaction tower filled with reducing atmosphere. The special surface area of the contact between the mineral powder and the high-temperature reducing gas is large, and the reaction speed is fast. The reduction of the metal oxide to be smelted in the mineral powder, the metal oxide which is not completely reduced falls into the molten pool and continues to be reduced.

In addition to the reduction of the remaining metal oxides to be smelted, the molten pool of the oxidized ore flash furnace needs to carry out the slagging reaction and complete the separation and discharge of the liquid metal and slag. Therefore, it is necessary to maintain a high-temperature reducing environment. The heat and reducing agent delivered by the reaction tower are still far from enough to accomplish the above work. Therefore, it is a necessary means to replenish the molten pool and provide a reducing agent by means of side blowing. The side blowing of the molten pool is achieved by arranging side blowing nozzles on the side of the molten pool. In China, blowing coal and oxygen through the side of the nozzle is one of the most economical solutions. According to a large number of tests, we can conclude that the inner width of the side-blown molten pool cannot be more than 3 meters, otherwise the center of the molten pool is difficult to be blown through.

However, according to the design principle of the traditional Alto Kunpu flash furnace, the inner width of the molten pool is 1-2 meters larger than the diameter of the reaction tower. At present, there is no flash furnace with a width smaller than the diameter of the reaction tower. There is a case where a flash furnace has multiple molten pools. Due to the limitation of space smelting principle, all practical flash furnaces have a diameter of more than 3 meters, that is, the width of the molten pool is more than 4 meters. If the side is blown, the molten pool is supplemented with heat and reaction materials. If the inner diameter of the molten pool is more than 3 meters, if the spray gun is too shallow, the center of the molten pool cannot be affected, resulting in low temperature, high viscosity in the middle part of the molten pool, and high content of metal oxide to be smelted in the molten slag. If the spray gun is deep into the molten pool, although the center can be blown through, but melted The edge of the pool cannot be directly affected, and the edge area of the pool is low in temperature, high in viscosity, and the content of metal oxide to be smelted in the slag is high. This means that the traditional Alto Kampus sulphide flash furnace cannot effectively use the side blowing method to replenish the molten pool and provide reaction materials.

Summary of the invention

In view of this, the present invention aims to propose a flash furnace with a side blow pool segment to solve the problem that the existing flash furnace bath cannot be smelted by metal oxidizing ore by side blowing.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A flash furnace with a side-blown molten pool section, comprising a reaction tower 1 having a feeding device on the reaction tower 1 and at least one molten pool 2 in the lower portion of the reaction tower 1, each of the molten pools 2, each of which is provided with a side blowing pool section having an inner width of less than 3 meters, and a side blowing arrangement is arranged on a side of the side blowing pool section, and the molten pool 2 is provided with a slag discharging port 5, and the side is blown a pool section is located between the slag discharge port 5 and the molten pool 2; the flash furnace further includes a rising flue 3, and the rising flue 3 is connected to the reaction tower 1 through the molten pool 2 The rising flue 3 is used to discharge the flue gas generated during the reaction.

The side blowing arrangement is used for injecting fuel and oxygen-containing gas into the furnace body of the side blowing pool to provide heat and reducing agent for the molten pool 2, the fuel is heavy oil, natural gas, liquefied petroleum gas, coal, One of a char, a hydrocarbon gas; the oxygen-containing gas is one of air, an oxygen-air mixture, or process oxygen. The arrangement of the side-blown molten pool sections of less than 3 meters enables the various parts of the molten pool 2 to be directly affected by the side blows, thereby supplementing the molten pool 2 with heat and providing a reducing agent. The side-blown molten pool section is located between the slag discharge port and the molten pool 2, so that the melt is smelted through the side blow smelting of the side-blown smelting pool section, and further precipitated and stratified, thereby reducing the content of the metal to be smelted in the slag layer and improving The recovery rate of metals to be smelted.

Preferably, the number of the rising flue 3 is the same as the number of the molten pool 2.

Preferably, the side blow pool section has a length of 8-20 meters.

Preferably, the side blow pool segment is a rectangular parallelepiped. Preferably, the inner width of the side-blowing molten pool section is 1.5-2.5 m. Within the width range, the spray guns on both sides of the side-blowing molten pool section can jointly affect the central area of the molten pool, and at the same time, both sides of the molten pool can be considered. The melt exerts an effective influence. If the width of the side-blown molten pool section is too narrow, which will affect the bearing capacity of the molten pool, it is necessary to increase the number of molten pools and increase the investment.

Preferably, the inner width of the molten pool 2 is gradually reduced from the end of the reaction column 1 to a distance of less than 3 meters and not less than 1 meter. Thereby, the melt and flue gas flow rate can be gently changed to reduce the impact on the smelting process.

Further, the number of the molten pools 2 is 1-4.

Further, the side blowing arrangement includes a side blowing hole symmetrically disposed in the side blowing pool section and a side blowing nozzle 4 disposed in the side blowing hole.

Further, the position of the side blowing arrangement corresponds to the slag layer in the side blowing pool section, so that the side blowing arrangement sprays oxygen-containing gas and fuel into the slag layer of the side blowing pool section. The slag is tumbling or convected, the heat transfer in the melt and the chemical reaction in the slag layer are promoted, and the recovery rate of the metal to be smelted is improved.

Further, a tuyeres are arranged on the molten pool 2 or on the sidewalls of the ascending flue 3. Oxygen-containing gas (air, oxygen-air mixture or process oxygen) is injected into the communicating flue above the surface of the molten pool through the tuyere to cause secondary combustion of the reducing gas (CO, H ₂ ), on the one hand to replenish the molten pool, and on the other hand In terms of reducing the CO content in the exhaust gas. The combustion of the oxygen-containing gas and the reducing gas in the flue gas is carried out through the tuyere provided on the side wall of the flue 3, and on the one hand, the soot adhesion due to the temperature drop of the flue gas during the flow process can be avoided, and the flue is blocked. It is possible to burn off the CO in the exhaust gas and reduce the subsequent flue gas treatment process.

Further, the feeding device is a combination of a nozzle or a nozzle, a burner or a burner, and a nozzle and a spray gun. The raw material, fuel and auxiliary materials necessary for smelting are added to the flash furnace by setting the feeding device, and if necessary, heat can be added to the space of the reaction tower 1 through a feeding device such as a burner.

Further, the ascending flue 3 is disposed at an upper portion of the molten pool 2 near the inlet of the side blown pool section. The flue gas does not directly enter the flue through the side-blown molten pool section, thereby avoiding fluctuations in the flue gas flow rate due to the change in the width of the molten pool in the side-blown molten pool section.

Further, the reaction tower 1 is connected with a gas transport pipeline so that the reaction gas introduced from the outside of the flash furnace and the heat it carries can be directly delivered into the furnace. The reaction gas is one or more of CO, H ₂ or hydrocarbon gas; preferably, it is industrially produced exhaust gas containing a reducing atmosphere or gas produced by a coal gas generating device; more preferably, It is one or more of blast furnace gas, converter gas, coke oven gas, electric furnace tail gas, rotary kiln tail gas, and rotary bottom furnace exhaust gas.

Compared with the prior art, the flash furnace with side blowing pool segments of the present invention has the following advantages:

The flash furnace of the present invention can directly affect various parts of the molten pool by side blowing by providing a side blowing pool section having an inner width of less than 3 meters, in particular, the central part can be blown through, and the side blowing is on the one hand The molten pool replenishes the heat, so that the molten pool forms a liquid melt environment with good fluidity, thereby realizing the functions of slag formation, slag and metal precipitation stratification, slag and metal discharge, and the side blowing setting can also provide the molten pool. The reducing agent completes the reduction of the remaining metal oxides to be smelted in the slag layer, and improves the recovery rate of the metal to be smelted.

DRAWINGS

The accompanying drawings, which are incorporated in the claims In the drawing:

Figure 1-2 is a schematic structural view of a conventional flash furnace;

3 is a schematic structural view of a flash furnace with a side blow pool section according to an embodiment of the present invention;

4 is another schematic structural view of a flash furnace with a side blow pool section according to an embodiment of the present invention;

5 is a schematic view showing a third structure of a flash furnace with a side blow pool section according to an embodiment of the present invention;

6 is a fourth structural schematic view of a flash furnace with a side blow pool section according to an embodiment of the present invention;

7 is a fifth structural schematic view of a flash furnace with a side blow pool section according to an embodiment of the invention;

8 is a sixth structural schematic view of a flash furnace with a side blow pool segment according to an embodiment of the invention;

9 is a seventh structural schematic view of a flash furnace with a side blow pool section according to an embodiment of the present invention;

10 is a schematic view showing an eighth structure of a flash furnace with a side blow pool section according to an embodiment of the present invention;

11 is a ninth structural schematic view of a flash furnace with a side blow pool section according to an embodiment of the present invention;

Figure 12 is a tenth structural schematic view of a flash furnace with a side blown pool section according to an embodiment of the present invention.

Description of the reference signs:

1-reaction tower, 2-melt pool, 3-rise flue, 4-side blow nozzle, 5-slag drain.

detailed description

It should be noted that the embodiments in the present invention and the features in the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", " The orientation or positional relationship of the indications of "upright", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and The simplification of the description is not intended to limit or imply that the device or component that is referred to has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting. Moreover, the terms "first", "second", and the like are used for the purpose of description only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", etc. may include one or more of the features, either explicitly or implicitly.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood by a person of ordinary skill in the art.

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

A flash furnace with a side blowing pool section, as shown in FIG. 3-12, comprises a reaction tower 1, a reaction device is arranged on the reaction tower 1, and at least one molten pool 2 is arranged in the lower part of the reaction tower 1, each The molten pool 2 is provided with a side blowing pool section having an inner width of less than 3 meters, and the side of the side blowing pool section is provided with a side blowing arrangement, the molten pool 2 is provided with a slag discharging port 5, and the side blowing molten pool section is located at the row Between the slag port and the molten pool 2; the flash furnace further includes an ascending flue 3 for discharging flue gas generated during the reaction, and the ascending flue 3 communicates with the reaction tower 1 through the molten pool 2.

The working process of this example:

Spraying the metal oxide ore powder to be smelted into the reaction tower 1, a reducing gas (such as CO or H ₂ ) or a reactant (such as oxygen and pulverized coal) capable of producing a reducing gas, and a flux (participating in slagging), mineral powder In the high temperature hot, reductive atmosphere-containing reaction column 1, the reduction and melting of the metal oxide to be smelted therein are rapidly completed by rapid heat transfer, mass transfer, and gas-solid, gas-liquid reaction.

The melt which completes the chemical reaction in the reaction tower 1 falls into the molten pool 2 in the lower part of the flash furnace, and the side of the molten pool 2 is provided with a side blowing arrangement, and the molten pool is supplemented with heat by the side blowing fuel and oxygen, so that the molten pool 2 is maintained constant. High temperature environment.

In the molten pool, a side blowing pool section having an inner width of less than 3 meters is specially provided. When the melt flows through the side blowing pool section, the fuel and the oxygen-containing gas are injected into the melt through the side blowing, in this embodiment, Pulverized coal and oxygen are respectively injected into the slag layer to provide heat for the side-blown molten pool section and maintain the reducing environment of the molten pool, while tumbling or convecting the slag layer, accelerating the exchange of heat and substances between the upper and lower layers, and promoting chemical reaction. The rapid progress is made such that the metal oxide which is not completely reduced in the reaction column 1 is reduced in the side blow pool section. The design of the side blown pool section of less than 3 meters enables the various positions of the side blown pool section to be directly affected by the side blow even at the center, thereby eliminating the dead angle and improving the reduction rate and recovery rate of the metal to be smelted. The overall viscosity of the melt in the molten pool 2 is lowered.

In the molten pool 2, the gangue component and the flux slag in the ore powder, after the reduction smelting and clarification through the side-blown molten pool section, the reduced metal and the slag are precipitated and layered, and the slag layer is formed due to the difference in density. And a layer of coarse metal, the slag is discharged from the end of the molten pool The mouth is discharged. The reduced low-boiling metal is vaporized and then enters the flue gas and flows out of the furnace from the rising flue 3, and can be recovered by condensation.

The flash furnace with side blowing pool section provided by the invention is applied to the smelting of manganese oxide ore. This is the first time that the flash furnace is newly applied to the production of manganese alloy, and the specific smelting process is as follows:

1) Flash furnace design:

The reaction tower has a diameter of 4 meters and a height of 7 meters. The total length of the molten pool is 20 meters. As shown in Fig. 11, the length of the side-blown molten pool with an inner width of less than 3 meters is 12 meters, and the width of the end of the side-blown molten pool is 1.2. Rice, with an annual processing capacity of 1.2 million tons.

2) Raw material preparation:

The manganese dioxide ore (soft manganese ore and hard manganese ore, manganese content greater than 25%) after enrichment in ore dressing, drying to moisture ≦ 0.3%, grinding 80% granules less than 200 mesh; pulverized coal is divided into two types, A kind of flash furnace is sprayed from the top of the reaction tower for gas production, and the pulverized coal is subjected to coal grinding and drying treatment, so that the water content is less than 1%, the particle size is less than 200 mesh, 85%, and the other is used for the side. For blowing and blowing, it does not need to be specially dried, the particle size is 5mm-8mm; the flux is quicklime, the particle size is less than 1mm, and the water content is less than 1%.

3) Smelting process:

Manganese dioxide powder ore, pulverized coal, oxygen-enriched, flux CaO is sprayed into the reaction tower from the top nozzle of the flash furnace reaction tower. The pulverized coal reacts with oxygen to produce CO and a small amount of H ₂ and provides heat to the reaction tower space. 1200-1450 ° C, in the hot space of reducing atmosphere, manganese dioxide in the mineral powder and CO reduction reaction, the formation of MnO, iron oxide in the ore powder is also reduced to low-cost FeO and part of the metal Fe .

The main reactions in the reaction column space are as follows:

2C+O ₂ =2CO

_{_{4MnO 2 + 2CO = 2Mn 2 O}} 3 + 2CO 2

3Mn ₂ O ₃ +CO=2Mn ₃ O ₄ +CO ₂

Mn ₃ O ₄ +CO=3MnO+CO ₂

3Fe ₂ O ₃ +CO=2Fe ₃ O ₄ +CO ₂

Fe ₃ O ₄ +CO=3FeO+CO ₂

FeO+CO=Fe+CO ₂

The melt after the space reaction falls into the molten pool. Since MnO is relatively difficult to reduce, it can only be reduced by carbon fixation in the molten pool. When the melt flows through the side blowing pool section, oxygen and pulverized coal are injected into the melt through the side blowing nozzle (process oxygen concentration is 99.6%, excessive coal powder), on the one hand, the molten pool is supplemented with heat, so that the molten pool Maintaining a high temperature of 1450 ° C - 1650 ° C, while making the molten pool 2 form a strong reducing environment; on the other hand, by spraying the side blowing arrangement of coal oxygen to the lower part of the slag layer, the slag layer can be tumbled and the upper and lower layers of the melt can be accelerated. Heat exchange, at the same time, make manganese and iron oxides in full contact with the carbon reducing agent, even if the heat and reducing agent are sufficient in the center of the molten pool, so that MnO and FeO are completely reduced by C.

In the molten pool, the gangue component and the flux slag in the ore powder, due to the difference in density, the reduced liquid metal flows to the bottom of the molten pool, and after the slag is precipitated and layered, a slag layer is formed from top to bottom. And the carbon-manganese-iron alloy layer, the slag is smelted through the side-blown molten pool section, and is discharged from the slag discharge port 5 at the end of the molten pool, and the metal alloy is discharged from the molten pool to obtain high-carbon ferromanganese, and the recovery rate of manganese is 95%. Above, the comprehensive energy consumption per unit of product is less than 850kgce/t, compared to the current manganese oxide ore furnace or electric furnace (electric furnace) smelting process less than 90% manganese recovery rate, higher than 1000kgce / t of comprehensive energy consumption, in recycling The efficiency and energy consumption indicators have been greatly improved.

The main chemical reactions taking place in the molten pool are as follows:

C+O ₂ =CO ₂

CO ₂ +C=2CO

MnO·SiO ₂ +CaO=CaO·SiO ₂ +MnO

FeO+C=Fe+CO

3MnO+4C=Mn ₃ C+3CO

4) In the flash smelting process of manganese oxide ore, if no flux or less flux is added, the manganese-rich slag with low phosphorus content can be produced through the above process, and the manganese-rich slag can be used for subsequent production of silicon-manganese alloy or manganese metal.

If silica is added to the raw material and the temperature of the molten pool is raised to above 1665 ° C (SiO ₂ is reduced to Si by C at this temperature), the silicon-manganese alloy can be directly produced by the flash furnace, and the reaction is as follows:

SiO ₂ +2C=Si+2CO

Mn ₃ C+3Si=3MnSi+C

The number of ascending flue 3 is the same as the number of molten pool 2, as shown in Figure 9-12.

The length of the side blown pool section is 8-20 meters.

The side blown pool section is a rectangular parallelepiped, as shown in Figure 3-5 and Figure 9-10. Preferably, the inner width of the side-blown molten pool section is 1.5-2.5 m. Within this range, the spray guns on both sides of the side-blown molten pool section can be 0.3-1.1 meters deep into the furnace as needed, and affect the area of the center of the molten pool. At the same time, avoiding the deep penetration of the spray gun can not effectively exert an effective influence on the melt on both side walls of the molten pool. If the width of the side blown pool section is too narrow, which will affect the bearing capacity of the melt, the number of molten pools needs to be increased. increase investment.

The inner width of the molten pool 2 is gradually reduced from the end of the reaction tower 1 to the distal end to 1 m, as shown in Fig. 6-8, so that the melt and the flue gas flow rate can be gently changed to reduce the influence on the smelting process.

The number of molten pools 2 is 1-4.

The side blowing arrangement includes a side blowing hole symmetrically disposed in the side blowing pool section and a side blowing nozzle 4 disposed in the side blowing hole.

The position of the side blowing arrangement corresponds to the slag layer in the side blowing pool section, so that the side blowing arrangement sprays oxygen-containing gas and fuel into the slag layer of the side blowing pool section, so that the slag is tumbling or convective It promotes the exchange of heat in the melt and the chemical reaction in the slag layer to improve the recovery rate of the metal.

Each of the molten pools 2 is provided with a side blowing arrangement for injecting fuel and oxygen-containing gas into the molten pool 2. The fuel may be one of heavy oil, natural gas, liquefied petroleum gas, coal, coke or hydrocarbon gas; the oxygen-containing gas is one of air, oxygen-air mixture or process oxygen.

A tuyere is provided on the molten pool 2 or on the side wall of the ascending flue 3. Oxygen-containing gas (air, oxygen-air mixture or process oxygen) is injected into the communicating flue above the surface of the molten pool through the tuyere to cause secondary combustion of the reducing gas (CO, H ₂ ), on the one hand to replenish the molten pool, and on the other hand In terms of reducing the CO content in the exhaust gas. The combustion of the oxygen-containing gas and the reducing gas in the flue gas is carried out through the tuyere provided on the side wall of the flue 3, and on the one hand, the soot adhesion due to the temperature drop of the flue gas during the flow process can be avoided, and the flue is blocked. It is possible to burn off the CO in the exhaust gas and reduce the subsequent flue gas treatment process.

The feeding device is a combination of a nozzle or a nozzle, a burner or a burner, and a nozzle and a spray gun. By adding the raw materials, fuel and auxiliary materials necessary for smelting to the flash furnace through nozzles and/or spray guns provided at the top of the reaction tower, it is also possible to set a burner on the reaction tower at the same time, and when the heat in the flash furnace is insufficient, the fire is burned. The mouth is supplemented with heat in the space of the reaction tower 1.

The ascending flue 3 is disposed near the upper portion of the molten pool 2 at the inlet of the side-blown molten pool section, and the flue gas does not directly enter the flue through the side-blown molten pool section, thereby avoiding the flue gas flow rate due to the variation of the molten pool width of the side-blown molten pool section. The fluctuations are shown in Figure 11.

The reaction tower 1 is connected to a gas transport pipe so that the reaction gas introduced from the outside of the flash furnace and the heat it carries can be directly delivered to the furnace. The reaction gas is one or more of CO, H ₂ or hydrocarbon gas; preferably, it is industrially produced exhaust gas containing a reducing atmosphere or gas produced by a coal gas generating device; more preferably, It is one or more of blast furnace gas, converter gas, coke oven gas, electric furnace tail gas, rotary kiln tail gas, and rotary bottom furnace exhaust gas.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

A flash furnace with a side blow pool segment, characterized in that it comprises a reaction tower (1), the reaction tower (1) is provided with a feeding device, and the lower portion of the reaction tower (1) is provided with at least a molten pool (2), each of the molten pools (2) is provided with a side blowing pool section having an inner width of less than 3 meters, and a side blowing arrangement is provided on a side of the side blowing pool section, the molten pool (2) provided with a slag discharge port (5), the side blown smelting pool section is located between the slag discharge port (5) and the reaction tower (2); the flash furnace further includes a rising flue (3) The rising flue (3) is in communication with the reaction column (1) through the molten pool (2).
The flash furnace with a side blow pool segment according to claim 1, wherein the side blow pool segment is a rectangular parallelepiped, and preferably, the side blow pool segment has an inner width of 1.5-2.5 meters.
The flash furnace with a side blow pool section according to claim 1, characterized in that the inner width of the molten pool (2) is gradually reduced from the end of the reaction tower (1) to the distal end to less than 3 meters and not less than 1 meter.
A flash furnace with a side blow pool section according to any one of claims 1 to 3, characterized in that the number of the molten pools (2) is 1-4.
The flash furnace with a side blow pool section according to claim 4, wherein the side blowing arrangement comprises a side blowing hole symmetrically disposed in the side blowing pool section and disposed in the side blowing hole Side blow nozzle (4).
The flash furnace with a side blowing pool section according to claim 1, wherein the side blowing arrangement is located at a position corresponding to the slag layer in the side blowing pool section.
The flash furnace with a side blown pool section according to claim 1, characterized in that a tuyeres are arranged on the molten pool (2) or on the side walls of the ascending flue (3).
The flash furnace with a side blow pool section according to claim 1, characterized in that the feeding device is a combination of a nozzle or a nozzle, a burner or a burner and a nozzle, and a spray gun.
A flash furnace with a side blow pool section according to claim 1, wherein said ascending flue (3) is disposed at an upper portion of the molten pool (2) near the inlet of said side blown pool section .
The flash furnace with a side blow pool section according to claim 1, characterized in that a gas transport pipe is connected to the reaction tower (1).