阅读说明：本技术 一种欧冶炉铁口氧枪 (Iron mouth oxygen lance for Ou smelting furnace ) 是由 季书民 邹庆峰 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种能够有效排渣铁的欧冶炉铁口氧枪,其氧枪螺纹杆同轴对中焊接在强力板上,所述的氧气枪体呈圆柱筒状,同轴对中焊接于强力板上,氧气枪体一侧开孔安装有氧气入口；所述的压缩空气枪体呈圆柱筒状,压缩空气枪体中心与强力板中心重合,对中焊接；压缩空气枪体一侧开孔安装有压缩空气入口；所述的压缩空气枪体前端焊接有等尺寸的6块隔板,沿着压缩空气枪体的中心均匀间隔分布,每两块隔板之间设置有气孔,所述枪头焊接于隔板的另一侧,所述的压缩空气枪体和氧气枪体的长度尺寸一致并间隔套装在氧气枪体外部；所述的螺纹钢丝缠绕于压缩空气枪体前端,螺纹钢丝外部缠绕有石棉绳；压缩空气枪体的一侧部顶面上设置着热电偶孔。(The invention discloses an iron notch oxygen lance of an Ou-smelting furnace capable of effectively discharging slag iron, wherein a threaded rod of the oxygen lance is coaxially and centrally welded on a strong plate, an oxygen lance body is cylindrical and coaxially and centrally welded on the strong plate, and an oxygen inlet is formed in an opening at one side of the oxygen lance body; the compressed air gun body is cylindrical, and the center of the compressed air gun body is superposed with the center of the strong plate and is welded in a centering way; a compressed air inlet is arranged on an opening at one side of the compressed air gun body; the oxygen lance comprises a compressed air lance body, a lance head, a plurality of oxygen lances and a plurality of oxygen lances, wherein the compressed air lance body is welded with 6 partition plates with equal size at the front end, the partition plates are uniformly distributed at intervals along the center of the compressed air lance body, air holes are formed between every two partition plates, the lance head is welded at the other side of each partition plate, the compressed air lance body and the oxygen lance body have the same length and size, and are sleeved outside the oxygen lance body at intervals; the threaded steel wire is wound at the front end of the compressed air gun body, and an asbestos rope is wound outside the threaded steel wire; the top surface of one side part of the compressed air gun body is provided with a thermocouple hole.)

1. An iron notch oxygen lance of an Ou metallurgical furnace comprises an oxygen lance threaded rod (1), an oxygen lance body (2), a compressed air lance body (3), an oxygen inlet (4), a compressed air inlet (5), a thermocouple hole (6), a strong rib (7), a strong plate (8), a threaded steel wire (9), an asbestos rope (10), an air hole (11), a partition plate (12) and a lance head (13); the method is characterized in that: the oxygen lance threaded rod (1) is coaxially and centrally welded on the strong plate (8), the oxygen lance body (2) is cylindrical and is coaxially and centrally welded on the strong plate (8), and an oxygen inlet (4) is formed in an opening at one side of the oxygen lance body (2); the compressed air gun body (3) is cylindrical, and the center of the compressed air gun body (3) is superposed with the center of the strong plate and is welded in a centering way; a compressed air inlet (5) is arranged on one side of the compressed air gun body (3) through a hole; the gun head is characterized in that 6 partition plates (12) with equal size are welded at the front end of the compressed air gun body (3), the partition plates are uniformly distributed at intervals along the center of the compressed air gun body (3), air holes (11) are formed between every two partition plates, the gun head (13) is welded on the other side of each partition plate (12), the partition plates (12) have the function of assembling the air holes, and the function of enabling the gun head (13) and the compressed air gun body (3) to be installed in a matched mode is achieved; the length and the size of the compressed air gun body (3) and the oxygen gun body (2) are consistent and are sleeved outside the oxygen gun body (2) at intervals; the threaded steel wire (9) is wound at the front end of the compressed air gun body (3) and is threaded, the threaded steel wire is fixed through section welding, and an asbestos rope (10) is wound outside the threaded steel wire (9); a thermocouple hole (6) is arranged on the top surface of one side part of the compressed air gun body (3).

Technical Field

The invention belongs to the technical field of blast furnace iron making, and particularly relates to an oxygen lance for an iron notch of an Ou-smelting furnace.

Background

The heat loss of the hearth of the Euro-metallurgical furnace is a major accident of non-blast furnace ironmaking Euro-metallurgical furnace production, and is generally caused by the reasons that a large amount of water leaks into the furnace by cooling equipment, the metallization rate of disordered gas flow of the shaft furnace is low, the loading fault and the overload are too heavy, and the phenomenon cannot be found in time, and the like. When the hearth of the gasification furnace of the Europe smelting furnace is lack of heat, the slag iron liquid loses fluidity and can not be normally discharged from an iron notch, the slag iron liquid level of the hearth of the gasification furnace rises to largely damage a small sleeve, the normal and safe production is affected, and if the treatment method is improper, the repeated phenomenon is easy to occur, and more serious loss is caused.

The conventional method for treating the discharge failure of the furnace hearth from the iron notch comprises the steps of keeping one to two air ports above the iron notch for air supply, closing oxygen guns of all the rest air ports, simultaneously, holding oxygen pipes by an operator in front of the furnace to continuously burn the iron notch below the air port until solidified iron slag between the iron notch and the air port is melted and flows out, enabling the iron notch and the air port to be communicated, gradually opening oxygen gun valves of surrounding air ports, and if the furnace hearth is seriously frozen, enabling the iron notch to be difficult to burn through, only enabling the air ports beside the air supply air ports to serve as temporary iron notch iron tapping, but enabling the site environment to be complex and variable, possibly causing coke in the furnace to collapse and burst out, even causing molten iron explosion, and enlarging accidents. The conventional method for thoroughly treating the discharged hot slag iron of the hearth from the iron notch usually needs days or even weeks, and the consumed manpower and material resources are huge.

Disclosure of Invention

The invention aims to provide an iron notch oxygen lance of an Ou-smelting furnace, which can solve the passive situation that slag iron cannot be normally discharged due to serious heat loss in a smelting reduction gasification furnace or a blast furnace hearth of the Ou-smelting furnace which is not a blast furnace, can quickly activate the hearth, quickly recover the working state of the hearth and recover normal production.

The invention adopts the technical scheme that the iron notch oxygen lance of the Oume furnace comprises an oxygen lance threaded rod, an oxygen lance body, a compressed air lance body, an oxygen inlet, a compressed air inlet, a thermocouple hole, a strong rib, a strong plate, a threaded steel wire, an asbestos rope, an air hole, a partition plate and a lance head; the oxygen lance threaded rod is coaxially and centrally welded on the strong plate, the oxygen lance body is cylindrical and coaxially and centrally welded on the strong plate, and an oxygen inlet is formed in an opening at one side of the oxygen lance body; the compressed air gun body is cylindrical, and the center of the compressed air gun body is superposed with the center of the strong plate and is welded in a centering way; a compressed air inlet is arranged on an opening at one side of the compressed air gun body; the gun head is welded on the other side of the partition plate, and the partition plate plays a role in assembling the air hole and simultaneously plays a role in matching and installing the gun head and the compressed air gun body; the length and the size of the compressed air gun body and the oxygen gun body are consistent and are sleeved outside the oxygen gun body at intervals; the threaded steel wire is wound at the front end of the compressed air gun body, is threaded and is fixed by section welding, and an asbestos rope is wound outside the threaded steel wire; the top surface of one side part of the compressed air gun body is provided with a thermocouple hole.

When the oxygen lance is used for treating slag iron and is not discharged from an iron notch, the oxygen lance is arranged on a tapping machine through a screw rod, the oxygen lance is jacked into a hole channel of the iron notch by the tapping machine, a asbestos rope blocks a hole between the oxygen lance and the hole channel of the iron notch, oxygen is introduced from an oxygen inlet to burn and melt the slag iron in a furnace hearth, compressed air is introduced from a compressed air inlet to cool an oxygen lance body, and a thermocouple is inserted from a thermocouple hole to detect the temperature of the oxygen lance, so that the burning loss of the oxygen lance is prevented. The invention can treat the production problem that the smelting reduction non-blast furnace ironmaking gasification furnace hearth can not discharge the hot slag from the iron notch, can completely discharge the slag-iron mixture solidified in the hearth after being burnt, quickly activate the hearth, quickly recover the working state of the hearth, and quickly recover the normal production.

Drawings

The present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a view of an oxygen lance at an iron notch of an Ougu furnace.

Detailed Description

An iron notch oxygen lance of an Ou metallurgical furnace is shown in figure 1 and comprises an oxygen lance threaded rod 1, an oxygen lance body 2, a compressed air lance body 3, an oxygen inlet 4, a compressed air inlet 5, a thermocouple hole 6, a strong rib 7, a strong plate 8, a threaded steel wire 9, an asbestos rope 10, an air hole 11, a partition plate 12 and a lance head 13; the oxygen lance threaded rod 1 is coaxially and centrally welded on the strong plate 8, the oxygen lance body 2 is cylindrical and is coaxially and centrally welded on the strong plate 8, and strong ribs 7 are respectively arranged on two sides of the strong plate 8. An oxygen inlet 4 is arranged on one side of the oxygen gun body 2; the compressed air gun body 3 is cylindrical, and the center of the compressed air gun body 3 is superposed with the center of the strong plate and is welded in a centering way; a compressed air inlet 5 is arranged on one side of the compressed air gun body 3; the front end of the compressed air gun body 3 is welded with 6 partition plates 12 with equal size, the partition plates are uniformly distributed at intervals along the center of the compressed air gun body 3, an air hole 11 is formed between every two partition plates, the gun head 13 is welded on the other side of each partition plate 12, the partition plates 12 have the function of assembling the air hole 11, and the gun head 13 and the compressed air gun body 3 are installed in a matched mode; the length and the size of the compressed air gun body 3 are consistent with those of the oxygen gun body 2, and the compressed air gun body and the oxygen gun body 2 are sleeved outside the oxygen gun body 2 at intervals; the threaded steel wire 9 is wound at the front end of the compressed air gun body 3, is threaded, and is fixed by section welding (namely, is fixed by welding at intervals section by section), and the outside of the threaded steel wire 9 is wound with an asbestos rope 10; a thermocouple hole 6 is provided on the top surface of one side portion of the compressed air gun body 3. When the oxygen lance is used for treating slag iron and is not discharged from an iron notch, the oxygen lance is arranged on a tapping machine through a threaded rod 1, the oxygen lance is jacked into a hole channel of the iron notch by the tapping machine, a asbestos rope 10 blocks a hole between the oxygen lance and the hole channel of the iron notch, oxygen is introduced from an oxygen inlet 4 to burn and melt the slag iron in a furnace hearth, compressed air is introduced from a compressed air inlet 5 to pass through an air hole 11 to cool an oxygen lance body, and a thermocouple is inserted from a thermocouple hole 6 to detect the temperature of the oxygen lance, so that the oxygen lance is prevented from being burnt and damaged.