阅读说明：本技术 一种欧冶炉气化炉的耐材喷涂组合喷枪 (Refractory material spraying combined spray gun of gasification furnace of pyrometallurgical furnace ) 是由 季书民 邹庆峰 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种欧冶炉气化炉的耐材喷涂组合喷枪,包括输送湿料的物料腔与与输送高压气的气体腔,物料腔与气体腔通过联接件焊接固定,物料腔的前端通过法兰连接着耐磨弯头,耐磨弯头的另一端通过法兰与枪口直端利用螺栓进行紧固连接,枪口直端通过螺纹连接喷射枪口,枪口直端呈圆台状,气体腔的前端插入枪口直端通过焊接连接,呈55°夹角,物料腔与气体腔外端设置枪套,起到在炉内高温环境保护物料腔与气体腔的作用。此装置采用湿料喷涂,可以克服炉内的高温炉料的热辐射工况环境影响,施工方便,耗时少,投产快,使用寿命长,节约原材料,环境污染小。(The invention discloses a refractory material spraying combined spray gun of an incinerator gasification furnace, which comprises a material cavity for conveying wet materials and a gas cavity for conveying high-pressure gas, wherein the material cavity and the gas cavity are welded and fixed through a connecting piece, the front end of the material cavity is connected with a wear-resistant elbow through a flange, the other end of the wear-resistant elbow is fixedly connected with a straight end of a gun muzzle through a flange by using bolts, the straight end of the gun muzzle is connected with a spray gun muzzle through threads, the straight end of the gun muzzle is in a round table shape, the front end of the gas cavity is inserted into the straight end of the gun muzzle and is connected through welding to form an included angle of 55 degrees, and gun covers are arranged at the outer ends of the material cavity and the gas cavity to play a role of protecting the material cavity and the gas cavity in a high-temperature environment in the incinerator. This device adopts the wet material spraying, can overcome the thermal radiation operating mode environmental impact of the high temperature furnace charge in the stove, and construction convenience is consuming time fewly, and the input is fast, and long service life practices thrift raw and other materials, and environmental pollution is little.)

1. The utility model provides a resistant material spraying combination spray gun of eupolyphaga stove gasification furnace, including material chamber (1) of carrying the wet material and with carry gas chamber (2) of high pressure gas, characterized by: the material cavity and the gas cavity are fixed by welding through a connector (7) and 8), the front end of the material cavity (1) is connected with a wear-resistant elbow (4) through a flange (5), the other end of the wear-resistant elbow (4) is fixedly connected with a muzzle straight end (3) through a flange (10) by utilizing a bolt, the muzzle straight end (3) is connected with a spray muzzle (6) through threads, the muzzle straight end (6) is in a round table shape, the front end of the gas cavity (2) is inserted into the muzzle straight end (3) to be connected by welding, an included angle of 55 degrees is formed, the material cavity (1) and the gas cavity (2) are provided with a gun sleeve (9) at the outer end, and the function of protecting the material cavity (1) and the gas cavity (2) in a furnace in a high-temperature environment is achieved.

Technical Field

The invention relates to the technical field of blast furnace ironmaking equipment, in particular to a refractory spraying combined spray gun of an Euro-metallurgy furnace gasifier.

Background

The eight-steel Ou-Meta furnace is divided into an upper furnace zone and a lower furnace zone, the upper part is a reduction shaft furnace, the lower part is a gasification furnace, the height of the gasification furnace is about 33 meters, and the effective volume is 1480m³. The top of the gasification furnace is a specific arch crown hemisphere with refractory material distribution, and is sprayed by adopting a castable, wherein the castable is fixed by a stainless steel anchor; the lower part of the dome is built by dome corundum combined bricks. The boundary point between the upper castable and the lower vault corundum composite brick in the hemispherical interior of the vault of the pyrometallurgical furnace causes local damage to refractory materials, the refractory materials fall off, the temperature of the furnace shell rises and cracks, and safety production is affected due to design defects and impact of working conditions of thermal vibration and thermal expansion and cold contraction. In order to eliminate the influence of the damage of the refractory material on the safety production, the damaged part is repaired by adopting a spraying technology. A spray gun adopted by the traditional spraying technology adopts pneumatic conveying to spray dry coating, water is distributed at the mouth of the spray gun, and the defects of uneven mixing and more rebound materials after spraying are overcome.

The invention content is as follows:

the invention aims to design a refractory spraying combined spray gun of an incinerator gasification furnace, which adopts wet material spraying, can overcome the influence of the thermal radiation working condition environment of high-temperature furnace charge in the furnace, and has the advantages of convenient construction, less time consumption, quick production, long service life, raw material saving and small environmental pollution.

The technical scheme adopted by the invention is as follows: the utility model provides a refractory material spraying combination spray gun of stove gasification furnace of Europe smelting, including the material chamber of carrying the wet material and carry the gas chamber of high pressure gas, material chamber and gas chamber pass through connector welded fastening, the front end of material chamber is passing through flange joint wear-resisting elbow, the other end of wear-resisting elbow utilizes the bolt fastening connection through flange and the straight end of muzzle, the straight end of muzzle passes through threaded connection and sprays the muzzle, the straight end of muzzle is round platform form, the front end of gas chamber inserts the straight end of muzzle and passes through welded connection, be 55 contained angles, material chamber and gas chamber outer end set up the gun case, play the effect of high temperature environment protection material chamber and gas chamber in the stove.

The gun elbow is easy to wear and has a replaceable flange, and the gun elbow can be replaced after being worn and leaked in the construction process, so that the material is saved, and the overhaul cost is reduced. The invention uses the material pressure feed pump to send the wet material to the injection cavity opening of the combined spray gun, and the wet material is injected to the furnace wall at the injection gun opening, thereby achieving the purpose of repairing the refractory material of the furnace wall.

Compared with the traditional process, the invention shortens the working time by about 20 percent and can reduce the loss of raw materials. The invention is beneficial to the environmental protection of the invention and the operation area, and well solves the problem of the quality of blast furnace spraying. The material sprayed by the spraying combined spray gun is a wet spraying material, has extremely low dust and extremely low material reflection ink loss, can be constructed at high temperature in the environment, and has physical properties close to the pouring quality of refractory materials after spraying.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The utility model provides a refractory material spraying combination formula spray gun structure of eupolyphaga stove gasifier, as shown in figure 1, includes that material chamber 1 and gas chamber 2 utilize the welding to fix each other through connector 7, 8, and the front end of material chamber 1 utilizes the bolt to fasten wear-resisting elbow 4 through flange 5 and connects, and the other end of wear-resisting elbow 4 utilizes the bolt to fasten with muzzle straight end 3 through flange 10 and is connected. The muzzle straight end 3 is connected with the injection cavity opening 6 through threads. The front end of the gas cavity 2 is inserted into the muzzle straight end 3 and is connected by welding. The outer ends of the material cavity 1 and the gas cavity 2 are provided with gun sleeves, and the gun sleeves play a role in protecting the material cavity 1 and the gas cavity 2 in a high-temperature environment in the furnace. According to the invention, wet materials are delivered to the muzzle straight end 3 and the injection cavity opening 6 of the combined spray gun under the pressure of the material cavity 1, high-pressure air pressurizes the wet materials at the muzzle straight end 3 through the gas cavity 2, and then the wet materials are sprayed to the furnace wall at the injection cavity opening 6, so that the aim of repairing refractory materials of the furnace wall is achieved.