阅读说明：本技术 一种直接浇铸的矿石熔融还原无头冶金炉 (Directly-cast ore smelting reduction headless metallurgical furnace ) 是由 李殿明 苏雪梅 李苏瑶 于 2020-11-18 设计创作，主要内容包括：本发明公开了一种直接浇铸的矿石熔融还原无头冶金炉,包括矿石熔融还原无头冶金炉,矿石熔融还原无头冶金炉内部设置有冶炼装置,矿石熔融还原无头冶金炉顶部设置有炉盖装置,矿石熔融还原无头冶金炉一侧设置有附属设施,矿石熔融还原无头冶金炉底部设置有浇铸包,浇铸包外部设置有连铸机,矿石熔融还原无头冶金炉内壁的底部设置有预熔金属液熔池,附属设施一侧安装有干熄渣发电装置。该矿石熔融还原无头冶金炉通过设置开放式炉壳体,实现“铁钢一体化”,降低建设投资,节省土地资源；采用即开即闭炉盖,实现不同冶炼阶段不同冶金功能的转换,采用大炉容冶炼,提高生产效率、减少耐火材料消耗。(The invention discloses a directly-cast ore smelting reduction headless metallurgical furnace, which comprises an ore smelting reduction headless metallurgical furnace, wherein a smelting device is arranged inside the ore smelting reduction headless metallurgical furnace, a furnace cover device is arranged at the top of the ore smelting reduction headless metallurgical furnace, an accessory facility is arranged on one side of the ore smelting reduction headless metallurgical furnace, a casting ladle is arranged at the bottom of the ore smelting reduction headless metallurgical furnace, a continuous casting machine is arranged outside the casting ladle, a pre-molten metal bath is arranged at the bottom of the inner wall of the ore smelting reduction headless metallurgical furnace, and a dry quenching slag power generation device is arranged on one side of the accessory facility. The ore smelting reduction headless metallurgical furnace realizes the integration of iron and steel by arranging the open furnace shell, reduces the construction investment and saves land resources; the furnace cover is opened and closed immediately, so that the conversion of different metallurgical functions in different smelting stages is realized, the large-furnace-volume smelting is adopted, the production efficiency is improved, and the consumption of refractory materials is reduced.)

1. A direct-cast ore smelting reduction headless metallurgical furnace, characterized by: the device comprises an ore melting reduction headless metallurgical furnace (1), wherein a smelting device (2) is arranged inside the ore melting reduction headless metallurgical furnace (1), a furnace cover device (3) is arranged at the top of the ore melting reduction headless metallurgical furnace (1), an accessory facility (4) is arranged on one side of the ore melting reduction headless metallurgical furnace (1), a casting ladle (5) is arranged at the bottom of the ore melting reduction headless metallurgical furnace (1), a continuous casting machine (6) is arranged outside the casting ladle (5), a premelted molten metal bath (7) is arranged at the bottom of the inner wall of the ore melting reduction headless metallurgical furnace (1), and a dry quenching slag power generation device (8) is arranged on one side of the accessory facility (4).

2. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: the smelting device (2) comprises an oxygen lance, a combustion lance, plasma, RH, LF, CAS-OB, AOD and GOR, and the smelting device (2) is positioned inside the ore smelting reduction headless metallurgical furnace (1).

3. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: the auxiliary facilities (4) comprise a dust removal device, a coal gas recovery power generation device and a steam recovery power generation device.

4. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: an ore pre-reduction feeding device, a carbon reduction device and a hydrogen reduction device are arranged above the ore smelting reduction headless metallurgical furnace (1).

5. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: the furnace cover device (3) adopts an open-and-close furnace cover.

6. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: the bottom of the ore smelting reduction headless metallurgical furnace (1) is provided with a slag-free casting device.

7. A direct-cast ore smelting reduction headless metallurgical furnace according to claim 1, wherein: a special deslagging device is arranged on a front platform of the ore smelting reduction headless metallurgical furnace (1).

Technical Field

The invention relates to the technical field of metallurgical steel, casting and nonferrous metal, in particular to a directly-cast ore smelting reduction headless metallurgical furnace.

Background

At present, in the metallurgical field such as ferrous smelting industry of ferrous metallurgy, a traditional blast furnace is a fixed type and closed type furnace body, the molten iron smelting and molten iron pretreatment functions of ore melting reduction and further molten steel smelting, molten steel refining, headless casting and slag splashing furnace protection functions cannot be realized, and the investment and the cost are high. Because the traditional molten iron smelting process and the molten steel smelting process are separated, and the molten steel smelting process and the molten steel refining process are separated, the temperature loss, the energy dissipation and the logistics transportation cost in the flowing process of high-temperature liquid metal and high-temperature slag are increased. Because the traditional iron-making blast furnace, steel-making converter, electric arc furnace and electric converter are fixed furnace bodies, the direct butt joint with a continuous casting machine cannot be realized.

In the prior art, for example, the traditional blast furnace ironmaking equipment has long process, large emission, large investment and high cost; the ladle that uses in the current flow mostly uses portable vehicle as the transport means, and the volume is less. In the existing 'one ladle to the bottom' technology, blast furnace molten iron is subjected to temperature loss of multiple transportation of a foundry ladle to a desulfurization station and a dephosphorization furnace; in the prior molten steel refining technology, the temperature loss caused by multiple times of transportation from a steelmaking converter to a refining furnace and a continuous (casting) casting machine is experienced; in the existing converter smelting technology, a low-cost production mode with large scrap steel amount and low iron consumption is difficult to realize; in the existing high-temperature hot slag treatment technology, an energy dissipation mode of water quenching and hot braising is generally adopted.

Disclosure of Invention

The invention aims to provide a directly-cast ore smelting reduction headless metallurgical furnace aiming at the defects of the prior art, so that the smelting casting continuous casting process can be integrated and compact, the primary treatment amount is increased, the discharge amount is reduced, the construction investment is reduced, the production cost is reduced, and the product quality is obviously improved.

In order to achieve the purpose, the invention provides the following technical scheme: the directly-cast ore smelting reduction headless metallurgical furnace comprises an ore smelting reduction headless metallurgical furnace, wherein a smelting device is arranged inside the ore smelting reduction headless metallurgical furnace, a furnace cover device is arranged at the top of the ore smelting reduction headless metallurgical furnace, an accessory facility is arranged on one side of the ore smelting reduction headless metallurgical furnace, a casting ladle is arranged at the bottom of the ore smelting reduction headless metallurgical furnace, a continuous casting machine is arranged outside the casting ladle, a premelted molten metal bath is arranged at the bottom of the inner wall of the ore smelting reduction headless metallurgical furnace, and a dry quenching slag power generation device is installed on one side of the accessory facility.

As a preferable technical scheme, the smelting device comprises an oxygen lance, a combustion lance, plasma, RH, LF, CAS-OB, AOD and GOR, and is positioned inside the ore smelting reduction headless metallurgical furnace.

As a preferable technical scheme of the invention, the subsidiary facilities comprise a dust removal device, coal gas recovery power generation and steam recovery power generation.

As a preferable technical scheme of the invention, an ore pre-reduction feeding device, a carbon reduction device and a hydrogen reduction device are arranged above the ore smelting reduction headless metallurgical furnace.

As a preferable technical scheme of the invention, the furnace cover device adopts an open-close furnace cover.

As a preferable technical scheme of the invention, the bottom of the ore smelting reduction headless metallurgical furnace is provided with a slag-free casting device.

As the preferable technical scheme of the invention, a special deslagging device is arranged on the front platform of the ore smelting reduction headless metallurgical furnace.

Compared with the prior art, the invention provides a directly-cast ore smelting reduction headless metallurgical furnace, which has the following beneficial effects:

1. the open furnace shell is adopted, so that the compact process of 'iron and steel integration' of iron making, steel making and refining can be realized, a separate iron making process is not required, the construction investment is obviously reduced, and the land resources are saved; the furnace cover device which can be opened and closed immediately is adopted, so that the conversion of different metallurgical functions in different smelting stages can be realized, and the production efficiency can be improved and the consumption of refractory materials can be reduced by adopting large-furnace-volume smelting;

2. ore smelting reduction is adopted, coking, sintering, pelletizing and blast furnace processes are omitted, and ultralow-emission and ultralow-cost smelting is realized; scrap steel is adopted for preheating, so that smelting with large scrap steel ratio and low iron consumption is realized; the deslagging device is adopted to realize iron slag separation and steel slag separation at different stages in the smelting process; the dry quenching slag is adopted for power generation, so that the energy utilization maximization of the high-temperature iron slag and the steel slag is realized; the metallurgical slag is sorted and recycled, so that the recycling of the metallurgical slag can be realized; the method of one-furnace multi-ladle tapping is adopted, so that the ladle cost can be saved, and the coal gas recovery device and the steam recovery device are adopted to realize coal gas power generation and steam power generation. The direct casting of the steel ladle is replaced by the metallurgical furnace, so that the continuous casting production of the high-quality steel is realized by omitting the converter smelting furnace and the steel ladle turnover cost and eliminating the temperature difference, the composition difference and the time difference.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention.

In the figure: 1. an ore smelting reduction headless metallurgical furnace; 2. a smelting device; 3. a furnace cover device; 4. an ancillary facility; 5. casting a ladle; 6. a continuous casting machine; 7. pre-melting a molten metal bath; 8. and a dry quenching slag power generation device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, in this embodiment: the directly-cast ore smelting reduction headless metallurgical furnace comprises an ore smelting reduction headless metallurgical furnace 1, wherein a smelting device 2 is arranged inside the ore smelting reduction headless metallurgical furnace 1, a furnace cover device 3 is arranged at the top of the ore smelting reduction headless metallurgical furnace 1, an accessory facility 4 is arranged on one side of the ore smelting reduction headless metallurgical furnace 1, a casting ladle 5 is arranged at the bottom of the ore smelting reduction headless metallurgical furnace 1, a continuous casting machine 6 is arranged outside the casting ladle 5, a premelted molten metal bath 7 is arranged at the bottom of the inner wall of the ore smelting reduction headless metallurgical furnace 1, and a dry quenching slag power generation device 8 is arranged on one side of the accessory facility 4. The invention adopts the open furnace shell, can realize the compact flow of 'iron and steel integration' of iron making, steel making and refining, does not need a separate iron making plant, obviously reduces the construction investment and saves land resources; the furnace cover device 3 which can be opened and closed immediately is adopted, so that the conversion of different metallurgical functions in different smelting stages can be realized, and the production efficiency can be improved and the consumption of refractory materials can be reduced by adopting large-furnace-volume smelting; ore smelting reduction is adopted, coking, sintering, pelletizing and blast furnace processes are omitted, and ultralow-emission and ultralow-cost smelting is realized; scrap steel is adopted for preheating, so that smelting with large scrap steel ratio and low iron consumption is realized; the deslagging device is adopted to realize iron slag separation and steel slag separation at different stages in the smelting process; the dry quenching slag is adopted for generating electricity 8, so that the energy utilization maximization of the high-temperature iron slag and the steel slag is realized; the metallurgical slag is sorted and recycled, so that the recycling of the metallurgical slag can be realized; the method of one-furnace multi-ladle tapping is adopted, so that the ladle cost can be saved, and the coal gas recovery device and the steam recovery device are adopted to realize coal gas power generation and steam power generation. The direct casting of the steel ladle is replaced by the metallurgical furnace, so that the continuous casting production of the high-quality steel is realized by omitting the converter smelting furnace and the steel ladle turnover cost and eliminating the temperature difference, the composition difference and the time difference.

In the embodiment, the smelting device comprises an oxygen lance, a combustion lance, plasma, RH, LF, CAS-OB, AOD and GOR, and the smelting device 2 is positioned inside the ore smelting reduction headless metallurgical furnace 1 so as to realize smelting action; the auxiliary facilities 4 comprise a dust removal device, a coal gas recovery power generation device and a steam recovery power generation device, so that a dust removal and power generation foundation is provided for the device; an ore pre-reduction feeding device, a carbon reduction device and a hydrogen reduction device are arranged above the ore smelting reduction headless metallurgical furnace 1, so that the molten iron smelting function of ore smelting reduction is realized; the furnace cover device 3 adopts the mode of opening and closing the furnace cover immediately, so that the conversion of different metallurgical functions in different smelting stages is realized; the bottom of the ore smelting reduction headless metallurgical furnace 1 is provided with a slag-free casting device, so that the slag-free casting function of molten metal such as molten steel is realized; a special slag removing device is arranged on a front platform of the ore smelting reduction headless metallurgical furnace 1, and the slag removing (iron, steel-slag separation) function of staged smelting is realized.

The working principle and the using process of the invention are as follows: the invention adopts the open furnace shell, can realize the compact flow of 'iron and steel integration' of iron making, steel making and refining, does not need a separate iron making plant, obviously reduces the construction investment and saves land resources; the furnace cover device 3 which can be opened and closed immediately is adopted, so that the conversion of different metallurgical functions in different smelting stages can be realized, and the production efficiency can be improved and the consumption of refractory materials can be reduced by adopting large-furnace-volume smelting; ore smelting reduction is adopted, coking, sintering, pelletizing and blast furnace processes are omitted, and ultralow-emission and ultralow-cost smelting is realized; scrap steel is adopted for preheating, so that smelting with large scrap steel ratio and low iron consumption is realized; the deslagging device is adopted to realize iron slag separation and steel slag separation at different stages in the smelting process; the dry quenching slag is adopted for generating electricity 8, so that the energy utilization maximization of the high-temperature iron slag and the steel slag is realized; the metallurgical slag is sorted and recycled, so that the recycling of the metallurgical slag can be realized; the method of one-furnace multi-ladle tapping is adopted, so that the ladle cost can be saved, and the coal gas recovery device and the steam recovery device are adopted to realize coal gas power generation and steam power generation. The direct casting of the steel ladle is replaced by the metallurgical furnace, so that the continuous casting production of the high-quality steel is realized by omitting the converter smelting furnace and the steel ladle turnover cost and eliminating the temperature difference, the composition difference and the time difference. The open-close furnace cover is an independent device and a refractory material combining device, is not structurally related to a dust removal device, and is mutually related in operation relationship; the controllable high-temperature liquid switch mechanism installed on the furnace body requires high safety and adopts special refractory materials. The special slag removing device is key equipment, an upper slag hole and a lower slag hole, such as an iron slag hole and a steel slag hole, are arranged according to the process requirements, and a slag runner or a slag runner can be adopted to flow high-temperature liquid slag into the special slag pot; the dry quenching slag power generation device is an independent equipment structure and is used for recovering the physical sensible heat of the high-temperature liquid slag to generate power.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.