WO2022042066A1 - Refractory masonry method for melting reduction furnace - Google Patents

Refractory masonry method for melting reduction furnace Download PDF

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WO2022042066A1
WO2022042066A1 PCT/CN2021/105094 CN2021105094W WO2022042066A1 WO 2022042066 A1 WO2022042066 A1 WO 2022042066A1 CN 2021105094 W CN2021105094 W CN 2021105094W WO 2022042066 A1 WO2022042066 A1 WO 2022042066A1
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furnace
lining
reduction furnace
smelting reduction
layer
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PCT/CN2021/105094
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French (fr)
Chinese (zh)
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张冠琪
张晓峰
张光磊
王林顺
王金霞
魏召强
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山东墨龙石油机械股份有限公司
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Priority to CN202010858082.9A priority patent/CN112113430B/en
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Publication of WO2022042066A1 publication Critical patent/WO2022042066A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/16Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1621Making linings by using shaped elements, e.g. bricks
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101Refractories from grain sized mixtures
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/16Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1626Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206Magnesium oxides or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74Physical characteristics
    • C04B2235/77Density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607Thermal properties, e.g. thermal expansion coefficient

Abstract

The present invention provides a refractory masonry method for a melting reduction furnace. The method comprises: casting of a permanent lining of the melting reduction furnace; masonry of a furnace bottom lining of the melting reduction furnace; masonry of a siphon tapping furnace; masonry of a furnace bottom working lining and a side wall; and casting of a slag area and a coal gas chamber of the melting reduction furnace. In the present invention, the masonry method combining integral casting and layered masonry and molding is developed for the melting reduction furnace, integrally casting and molding of the permanent lining is used, and the furnace bottom lining and the working lining etc. are subjected to masonry in multiple layers in multiple steps, so that an environmental demand on high temperature and high pressure in a smelting process is satisfied, erosion of the slag to the furnace lining is reduced to the maximum extent, it is ensured that the furnace lining is good in erosion resistance and thermal shock resistance, the melting reduction furnace can adapt to high erosion of FeO slag to a refractory, and relatively high mechanical properties and corrosion resistance are maintained. In addition, the melting reduction furnace body of which masonry is completed by using the present method has three levels of safety protecting measures, the safety of the melting reduction furnace in an extreme high strength smelting environment is improved greatly, and the safety of personnel and a device is guaranteed.

Description

一种熔融还原炉耐材砌筑方法A kind of smelting reduction furnace refractory masonry method 技术领域technical field
本发明涉及冶金炉技术领域,具体涉及一种熔融还原炉耐材砌筑方法。The invention relates to the technical field of metallurgical furnaces, in particular to a refractory masonry method for a smelting reduction furnace.
背景技术Background technique
HIsmelt熔融还原冶金技术是冶金行业领先的非高炉冶金技术,其利用非焦煤煤粉及铁矿粉采取喷射冶金方式生产液态铁水,具有流程短、污染小、铁水质量高的特点,是解决焦煤资源有限和冶炼污染问题的先进冶金技术。HIsmelt smelting reduction metallurgical technology is a leading non-blast furnace metallurgical technology in the metallurgical industry. It uses non-coking coal pulverized coal and iron ore powder to produce liquid molten iron by jet metallurgy. It has the characteristics of short process, low pollution and high molten iron quality. It is a solution to coking coal resources. Advanced metallurgical technology for limited and smelting pollution problems.
熔融还原冶金技术的核心装备是SRV熔融还原炉,SRV炉从下往上依次为铁浴区、熔渣区、二次燃烧区及煤气室,由于炉内长时间处于1400℃以上的高温环境中,且耐材的使用周期内面临停炉、启动等冷热环境变化,耐材的寿命和性质变化对熔融还原炉长时间连续运行至关重要,将直接影响生产安全操作和冶炼效率。The core equipment of smelting reduction metallurgical technology is the SRV smelting reduction furnace. The SRV furnace consists of iron bath area, slag area, secondary combustion area and gas chamber from bottom to top. Because the furnace is in a high temperature environment above 1400 ℃ for a long time , and the service life of the refractory is faced with changes in cold and hot environments such as furnace shutdown and start-up. The life and property changes of the refractory are critical to the long-term continuous operation of the smelting reduction furnace, which will directly affect the safe operation of production and smelting efficiency.
为了实现铁矿粉的还原和二次燃烧向熔池的高效供热,熔融还原冶金技术采用50%-60%的二次燃烧率,导致熔渣中具有较高的FeO含量(4%-6%),炉渣会渗入到耐火砖孔或缝隙,发生温度骤变时由于耐火材料与炉渣膨胀和收缩速率不同,造成裂缝和剥落,高温熔态FeO对炉缸耐材具有极大的侵蚀(高炉渣中FeO含量小于1%)。原有熔融还原炉耐火砖采用镁铬砖(MgO>63%),需要保持熔渣中(MgO)>10%以减慢耐材侵蚀,不仅增加辅助熔剂消耗,增加了熔渣的生成,且渣中氧化镁含量过高(>8%)降低了生产效率。In order to realize the reduction of iron ore powder and the efficient heat supply to the molten pool by secondary combustion, the smelting reduction metallurgical technology adopts a secondary combustion rate of 50%-60%, resulting in a higher FeO content (4%-60%) in the slag. %), the slag will penetrate into the holes or gaps of the refractory bricks. When the temperature suddenly changes, the refractory material and the slag will expand and shrink at different rates, resulting in cracks and spalling. The high temperature molten FeO has great erosion on the hearth refractory (high FeO content in the slag is less than 1%). The original smelting reduction furnace refractory bricks use magnesia-chrome bricks (MgO>63%), and it is necessary to maintain (MgO)>10% in the slag to slow down the erosion of the refractory material, which not only increases the consumption of auxiliary flux, but also increases the generation of slag, and Excessive magnesium oxide content (>8%) in the slag reduces production efficiency.
发明内容SUMMARY OF THE INVENTION
本发明提供了一种熔融还原炉耐材砌筑方法,以解决上述技术问题中的至少一个。The present invention provides a refractory masonry method for a smelting reduction furnace to solve at least one of the above technical problems.
本发明所采用的技术方案为:The technical scheme adopted in the present invention is:
一种熔融还原炉耐材砌筑方法,所述熔融还原炉设置有虹吸出铁炉,所述熔融还原炉耐材砌筑方法包括以下步骤:A method for building a refractory material for a smelting reduction furnace, wherein the smelting reduction furnace is provided with a siphon tapping furnace, and the method for building a refractory material for a smelting reduction furnace comprises the following steps:
a)熔融还原炉永久衬的浇筑:将锚固件安装于所述熔融还原炉的铁浴区炉壳,在铁浴区炉内侧安装浇筑模板,在所述模板内整体浇注YJ-1型耐火料,待其凝固后拆除所述模板;a) The pouring of the permanent lining of the smelting reduction furnace: the anchors are installed on the furnace shell of the iron bath area of the smelting reduction furnace, the pouring template is installed inside the furnace in the iron bath area, and the YJ-1 type refractory is integrally poured in the template. , and remove the template after it solidifies;
b)熔融还原炉炉底衬的砌筑:在炉底用NJ-1型耐火料砌筑形成第一层衬体,在所述第一层衬体上方用FB-1型耐火料砌筑形成第二层衬体,在所述第二层衬体上方用FB-2型耐火料砌筑形成第三层衬体;b) Masonry of the furnace bottom lining of the smelting reduction furnace: the first layer of lining is formed by masonry with NJ-1 type refractory at the furnace bottom, and the FB-1 type refractory is formed on the top of the first layer of lining. The second layer of lining body is built with FB-2 type refractory above the second layer of lining body to form a third layer of lining body;
c)虹吸出铁炉的砌筑:先铺砌所述虹吸出铁炉底部的找平层,在所述找平层上砌筑所述虹吸出铁炉永久衬,然后对所述虹吸出铁炉的炉墙下部进行砌筑,安装所述虹吸出铁炉预制件,最后对所述虹吸出铁炉的炉墙上部进行砌筑;c) Masonry of the siphon tap furnace: first lay the leveling layer at the bottom of the siphon tap furnace, build the permanent lining of the siphon tap furnace on the leveling layer, and then install the furnace of the siphon tap furnace The lower part of the wall is built, the prefabricated parts of the siphon tap furnace are installed, and finally the top part of the furnace wall of the siphon tap furnace is built;
d)炉底工作衬和侧墙的砌筑:在所述第三层衬体外侧采用砖块用NJ-1型耐火料逐层砌筑工作衬和侧墙;d) Masonry of furnace bottom working lining and side wall: use bricks to build working lining and side wall layer by layer with NJ-1 type refractory on the outside of the third layer of lining body;
e)熔融还原炉熔渣区和煤气室的浇筑:首先安装熔融还原炉渣区冷却器装置,在所述渣区冷却器装置靠炉壳一侧焊接熔融还原炉铜板,在所述铜板与所述渣区冷却器装置之间填充高低温膨胀耐材,在炉上部整个区域内使用自流性浇注料浇筑。e) Pouring of the slag area and gas chamber of the smelting reduction furnace: first install a cooler device in the slag area of the smelting reduction furnace, weld the copper plate of the smelting reduction furnace on the side of the furnace shell of the cooler device in the smelting reduction furnace, and connect the copper plate and the High and low temperature expansion refractories are filled between the slag zone cooler devices, and self-flowing castables are used in the entire upper part of the furnace.
优选地,所述YJ-1型耐火料主要成分(按重量百分比计):Al 2O 3≥85%; Preferably, the main component of the YJ-1 type refractory (by weight percentage): Al 2 O 3 ≥85%;
所述NJ-1型耐火料主要成分(按重量百分比计):Al 2O 3≥95%,SiO 2≥4%; The main components of the NJ-1 type refractory (by weight percentage): Al 2 O 3 ≥95%, SiO 2 ≥4%;
所述FB-1型耐火料主要成分(按重量百分比计):Al 2O 3≥65%,MgO≥30%; The main components of the FB-1 type refractory (by weight percentage): Al 2 O 3 ≥ 65%, MgO ≥ 30%;
所述FB-2型耐火料主要成分(按重量百分比计):Al 2O 3≥75%,MgO≥20%。 The main components of the FB-2 type refractory material (by weight percentage): Al 2 O 3 ≥ 75%, MgO ≥ 20%.
优选地,在所述步骤b)中,所述各层衬体砌筑前需找平,且所述各层衬体层内耐火料砌筑采用错位方式砌筑;Preferably, in the step b), the layers of linings need to be leveled before masonry, and the refractory materials in the linings of each layer are built in a dislocation manner;
所述第二层衬体找平时,需根据现场安装状况适当调整衬体砖形结构及配合尺寸与间隙,以满足所述第一层衬体和所述第三层衬体均衡及安装公差;When leveling the second-layer lining body, it is necessary to adjust the brick-shaped structure of the lining body and the matching size and clearance according to the installation conditions on site, so as to satisfy the balance and installation tolerance of the first-layer lining body and the third-layer lining body;
所述各层衬体砌筑前,需使用捣打料对衬体与边部圆周区域侧壁衬的环形缝进行填充。Before each layer of lining is built, ramming material should be used to fill the annular seam between the lining and the side wall lining in the peripheral area of the edge.
优选地,在所述步骤b)中,所述第二层衬体从所述熔融还原炉的中心线向周边砌筑,砌筑层数为3-5层;所述第三层衬体砌筑层数为5-7层,且前3-5层在所述第二层的砌筑范围内铺满,剩下层从周边向中心线砌筑,砌筑过程采用物理方式紧密结合。Preferably, in the step b), the second layer of lining is built from the center line of the smelting reduction furnace to the periphery, and the number of layers is 3-5; the third layer of lining is built The number of building layers is 5-7 layers, and the first 3-5 layers are covered in the masonry range of the second layer, and the remaining layers are built from the periphery to the center line, and the masonry process is closely combined with physical methods.
优选地,在所述步骤c)中,所述虹吸出铁炉到熔融还原炉出铁通道区域全部安装保温层和永久衬。Preferably, in the step c), an insulation layer and a permanent lining are all installed in the area of the tap channel from the siphon tap furnace to the smelting reduction furnace.
优选地,在所述步骤c)中,所述虹吸出铁炉永久衬由三层标准砖砌筑,砌筑方向按照从虹吸口向溢铁口逐步砌筑的方式,整体支撑结构按照从低往高的方向砌筑,虹吸出铁炉侧衬按照从炉壳向出铁通道方向砌筑。Preferably, in the step c), the permanent lining of the siphon tap furnace is built with three layers of standard bricks, the direction of the masonry is gradually built from the siphon mouth to the overflow hole, and the overall support structure is built according to the lower The side lining of the siphon tap furnace is built in the direction from the furnace shell to the tap channel.
优选地,所述熔融还原炉的侧壁设置有残铁口,所述残铁口通道安装高度与所述炉底衬高度相当,所述残铁口通道以0°-15°角度由炉内向外倾斜,所述炉底的砌筑倾斜角度在8°以内,同时所述残铁口通道相较于炉底圆周低3-13cm。Preferably, the side wall of the smelting reduction furnace is provided with a residual iron hole, the installation height of the residual iron hole channel is equal to the height of the furnace bottom lining, and the residual iron hole channel is 0°-15° from the inside of the furnace to the inside of the furnace. Outer inclination, the masonry inclination angle of the furnace bottom is within 8°, and the channel of the residual iron hole is 3-13 cm lower than the circumference of the furnace bottom.
优选地,所述残铁口远端圆周区域方向上砌筑异形砖,并在砌筑异形砖后放置预制件,所述预制件附近的设置有接合砖块。Preferably, special-shaped bricks are built in the direction of the circumferential area of the distal end of the iron residual hole, and prefabricated parts are placed after the special-shaped bricks are built, and joint bricks are arranged near the prefabricated parts.
优选地,所述熔融还原炉的侧壁还设置有排渣通道,所述排渣通道位于渣铁界面处,所述渣铁界面位于炉底中心水平高度向上2-3.5m,所述排渣通道随炉衬同步砌筑。Preferably, the side wall of the smelting reduction furnace is further provided with a slag discharge channel, the slag discharge channel is located at the slag-iron interface, and the slag-iron interface is located 2-3.5m above the horizontal height of the center of the furnace bottom. The channel is built synchronously with the furnace lining.
优选地,还包括对砌筑完成的熔融还原炉进行的热处理工艺,所述热处理工艺分为两个阶段:Preferably, it also includes a heat treatment process for the smelting reduction furnace completed by masonry, and the heat treatment process is divided into two stages:
第一阶段为高温氧化吹扫阶段,高温氧化气体从所述熔融还原炉炉顶部增压后进入,风量30000-60000Nm 3/h,风压40kpa-160kpa,风温采用阶梯递加方式由初始的100-250℃逐步增加至1000-1300℃; The first stage is the high-temperature oxidizing and purging stage. The high-temperature oxidizing gas enters after being pressurized from the top of the smelting reduction furnace. 100-250℃ gradually increase to 1000-1300℃;
第二阶段为高温燃烧成型及冷却固结阶段,风量维持40000-60000Nm 3/h,风温维持1000-1300℃,可燃气体流量由初始800-1000Nm 3/h逐步增加至3500-5000Nm 3/h,当熔融还原炉各部达到预定温度值时,停止可燃气体的配入,维持一定时间后,配入常温不可燃气体冷却固结。 The second stage is the high temperature combustion forming and cooling consolidation stage, the air volume is maintained at 40000-60000Nm 3 /h, the air temperature is maintained at 1000-1300 ℃, and the combustible gas flow is gradually increased from the initial 800-1000Nm 3 /h to 3500-5000Nm 3 /h , When each part of the smelting reduction furnace reaches the predetermined temperature value, the mixing of the combustible gas is stopped, and after a certain period of time, the non-combustible gas at normal temperature is added for cooling and consolidation.
由于采用了上述技术方案,本发明所取得的有益效果为:Owing to adopting the above-mentioned technical scheme, the beneficial effects obtained by the present invention are:
本发明针对熔融还原炉开发了整体浇筑与分层砌筑成型的砌筑方法,采用永久衬整体浇筑成型,炉底衬、工作衬等分步多层砌筑,满足冶炼过程高温、高压的环境需求,最大限度减少熔渣对炉衬的侵蚀,保证了炉衬具有良好的抗侵蚀性和抗热震性能,适应高FeO熔渣对耐材的侵蚀,在熔渣的侵蚀和冲刷过程中,保持较高的机械性能和抗侵蚀性。The invention develops a masonry method of integral pouring and layered masonry molding for the smelting reduction furnace, adopts the permanent lining integral pouring molding, the furnace bottom lining, the working lining and other multi-layered masonry, so as to meet the high temperature and high pressure environment in the smelting process. requirements, minimize the erosion of the slag on the furnace lining, ensure that the furnace lining has good corrosion resistance and thermal shock resistance, adapt to the erosion of high FeO slag on refractory materials, and maintain a relatively high degree of corrosion during the erosion and scouring process of the slag. High mechanical properties and corrosion resistance.
针对熔融还原炉特定的冶炼环境,开发了专用的耐火材料,在不同的位置选用不同的耐火材料,合理选择浇注料、耐火砖和部分预制件,最大限度满足炉内冶炼环境需要,延长了熔融还原炉耐材的使用寿命,降低了冶炼过程溶剂的消耗。According to the specific smelting environment of the smelting reduction furnace, special refractory materials are developed, different refractory materials are selected in different locations, and castables, refractory bricks and some prefabricated parts are reasonably selected to meet the needs of the smelting environment in the furnace to the greatest extent and prolong the melting time. The service life of the refractory material in the reduction furnace reduces the consumption of solvents in the smelting process.
另外,利用本方法砌筑完成的熔融还原炉体具有三级安全防护措施,大幅度提高了熔融还原炉在极端高强度冶炼环境下的安全性,保障人员与设备的安全。In addition, the smelting reduction furnace body built by the method has three-level safety protection measures, which greatly improves the safety of the smelting reduction furnace in an extremely high-strength smelting environment, and ensures the safety of personnel and equipment.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解,构成本发明的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:
图1为本申请提供的一种熔融还原炉的结构示意图。FIG. 1 is a schematic structural diagram of a smelting reduction furnace provided by the application.
图2为图1中熔融还原炉炉内A-A平面的剖视图。FIG. 2 is a cross-sectional view of the A-A plane in the smelting reduction furnace in FIG. 1 .
图3为图2中熔融还原炉炉底耐材的结构示意图。FIG. 3 is a schematic structural diagram of the bottom refractory material of the smelting reduction furnace in FIG. 2 .
图4为图3中B-B平面的剖视图。FIG. 4 is a cross-sectional view of the plane B-B in FIG. 3 .
图5为图3中熔融还原炉内衬层处的结构示意图。FIG. 5 is a schematic structural diagram of the inner lining layer of the smelting reduction furnace in FIG. 3 .
图6为图1中熔融还原炉底部部分结构示意图。FIG. 6 is a schematic structural diagram of the bottom part of the smelting reduction furnace in FIG. 1 .
图7为图1中熔融还原炉底部部分另一视角的结构示意图。FIG. 7 is a schematic structural diagram of the bottom part of the smelting reduction furnace in FIG. 1 from another perspective.
其中:1-虹吸出铁炉,2-永久衬,3-炉底衬,4-锚固件,5-第一层衬体,6-第二层衬体,7-第三层衬体,8-工作衬,9-渣区冷却器装置,10-残铁通道,11-排渣通道,12-渣口。Among them: 1- siphon tapping furnace, 2- permanent lining, 3- furnace bottom lining, 4- anchor, 5- first layer lining body, 6- second layer lining body, 7- third layer lining body, 8 - Working lining, 9- slag zone cooler device, 10- residual iron channel, 11- slag discharge channel, 12- slag port.
具体实施方式detailed description
为了更清楚的阐释本申请的整体构思,下面结合说明书附图以示例的方式进行详细说明。In order to explain the overall concept of the present application more clearly, the following detailed description is given by way of example in conjunction with the accompanying drawings.
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是,本发明还可以采用其他不同于在此描述的其他方式来实施,因此,本发明的保护范围并不受下面公开的具体实施例的限制。Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.
另外,在本发明的描述中,需要理解的是,术语“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. refer to the orientation or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接,还可以是通信;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction between the two elements. . For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
实施例1:Example 1:
如图1至图7所示,本申请提供了一种熔融还原炉耐材砌筑方法,熔融还原炉其形成有铁浴区、熔渣区和煤气室,熔融还原炉还设置有虹吸出铁炉,熔融还原炉耐材砌筑方法包括以下步骤,As shown in FIGS. 1 to 7 , the present application provides a method for building a refractory material for a smelting reduction furnace. The smelting reduction furnace is formed with an iron bath area, a slag area and a gas chamber, and the smelting reduction furnace is also provided with a siphon tap iron. Furnace, smelting reduction furnace refractory masonry method comprises the following steps,
a)熔融还原炉永久衬的浇筑:将锚固件安装于所述熔融还原炉的铁浴区炉壳,在铁浴区炉内侧安装浇筑模板,在所述模板内整体浇注YJ-1型耐火料,待其凝固后拆除所述模板;a) The pouring of the permanent lining of the smelting reduction furnace: the anchors are installed on the furnace shell of the iron bath area of the smelting reduction furnace, the pouring template is installed inside the furnace in the iron bath area, and the YJ-1 type refractory is integrally poured in the template. , and remove the template after it solidifies;
b)熔融还原炉炉底衬的砌筑:在炉底用NJ-1型耐火料砌筑形成第一层衬体,在所述第一层衬体上方用FB-1型耐火料砌筑形成第二层衬体,在所述第二层衬体上方用FB-2型耐火料砌筑形成第三层衬体;b) Masonry of the furnace bottom lining of the smelting reduction furnace: the first layer of lining is formed by masonry with NJ-1 type refractory at the furnace bottom, and the FB-1 type refractory is formed on the top of the first layer of lining. The second layer of lining body is built with FB-2 type refractory above the second layer of lining body to form a third layer of lining body;
c)虹吸出铁炉的砌筑:先铺砌所述虹吸出铁炉底部的找平层,在所述找 平层上砌筑所述虹吸出铁炉永久衬,然后对所述虹吸出铁炉的炉墙下部进行砌筑,安装所述虹吸出铁炉预制件,最后对所述虹吸出铁炉的炉墙上部进行砌筑;c) Masonry of the siphon tap furnace: first lay the leveling layer at the bottom of the siphon tap furnace, build the permanent lining of the siphon tap furnace on the leveling layer, and then install the furnace of the siphon tap furnace The lower part of the wall is built, the prefabricated parts of the siphon tap furnace are installed, and finally the top part of the furnace wall of the siphon tap furnace is built;
d)炉底工作衬和侧墙的砌筑:在所述第三层衬体外侧采用砖块用NJ-1型耐火料逐层砌筑工作衬和侧墙;d) Masonry of furnace bottom working lining and side wall: use bricks to build working lining and side wall layer by layer with NJ-1 type refractory on the outside of the third layer of lining body;
e)熔融还原炉熔渣区和煤气室的浇筑:安装渣区冷却器装置,在所述渣区冷却器装置靠炉壳一侧焊接铜板,在所述铜板与所述渣区冷却器装置之间填充耐材,在炉上部整个区域内使用自流性浇注料浇筑。e) Pouring of the slag zone and gas chamber of the smelting reduction furnace: install a slag zone cooler device, weld a copper plate on the side of the slag zone cooler device on the side of the furnace shell, and place the copper plate and the slag zone cooler device between the copper plate and the slag zone cooler device. Filled with refractory material, poured with self-flowing castables in the entire upper area of the furnace.
本发明提供一种熔融还原炉耐材砌筑方法,根据炉衬位置选择性质不同的耐火材料,采用分层砌筑成型,具有良好的抗热震性、抗侵蚀性,极大的延长了炉衬的使用寿命。The invention provides a refractory masonry method for a smelting reduction furnace. Refractory materials with different properties are selected according to the position of the furnace lining, and the layered masonry is used for forming, which has good thermal shock resistance and corrosion resistance, and greatly prolongs the life of the furnace lining. service life.
具体地,对于永久衬的浇筑成型,将锚固件安装在SRV炉炉壳上。从第一排的每个模板开始安装支撑模具,浇注YJ-1型浇筑耐火料,待其凝固24h后拆除模板。永久衬采用整体浇筑成型,保证了永久衬与炉壳具有良好的接触,整体浇筑避免砌筑过程存在的缝隙,最大程度上保证了炉壳的安全性。Specifically, for permanent lining casting, anchors are installed on the SRV furnace shell. From each formwork in the first row, install the support mould, pour the YJ-1 type refractory, and remove the formwork after it solidifies for 24 hours. The permanent lining is formed by integral casting, which ensures good contact between the permanent lining and the furnace shell. The integral casting avoids gaps in the masonry process and ensures the safety of the furnace shell to the greatest extent.
如图2及图3所示,对于炉底衬的砌筑,在清理平整的炉底上用泥浆NJ-1找水平面;安装前先确定0°的轴线,并将其标在组装完成的炉底第一层衬体。用FB-1型耐火砖从中心线开始砌筑第二层衬体,周边与浇筑永久衬层留出50-80mm缝,一共砌筑3-5层。在相同的范围内砌筑材质为FB-2型耐火砖的第三层衬体,一共砌筑5-7层,前3-5层在相应范围内铺满,第5-6层从周边开始向内砌筑,砌筑范围按熔融还原炉内径要求。耐火砖砌筑炉底衬总高度在900-1800mm。每层间砖错开砌,砌筑层数与选用的耐火砖的规格相匹配,层与层之间泥浆缝使用NJ-1型泥浆摸缝,膨胀缝不超过5mm。第二层衬体的砌筑,用NJ-2型捣打料将底部第一层和永久衬侧壁之间的环形缝隙填满,逐层填充泥浆。底部第一层和第三层之间100~300mm,用捣打料NJ-2型找水平面,用来均衡两层砖之间和安装的公差。再根据图纸在相应位置安装热电偶。捣打划 分区域尺寸大小约为800×800mm。捣打时需要采用稳定的150mm高的矩形模板,将搅拌好的混合料填充到已固定模板的各区域内,并用振动板振实。对模板顶部的层厚检查,捣打施工时特殊区段可留一定空间。As shown in Figure 2 and Figure 3, for the masonry of the furnace bottom lining, use mud NJ-1 to find the horizontal plane on the cleaned and level furnace bottom; before installation, determine the axis of 0° and mark it on the assembled furnace Bottom first layer liner. Use FB-1 type refractory bricks to build the second layer of lining from the center line, and leave a 50-80mm gap between the periphery and the permanent lining layer, and build a total of 3-5 layers. In the same range, the third layer of lining material is FB-2 type refractory bricks, a total of 5-7 layers are built, the first 3-5 layers are covered in the corresponding range, and the 5-6 layers start from the periphery The masonry is built inward, and the range of masonry is required by the inner diameter of the smelting reduction furnace. The total height of the bottom lining of the refractory brick masonry furnace is 900-1800mm. The bricks between each layer are staggered, and the number of masonry layers matches the specifications of the selected refractory bricks. The mud joints between the layers are made of NJ-1 type mud joints, and the expansion joints do not exceed 5mm. For the masonry of the second layer of lining, fill the annular gap between the first layer at the bottom and the side wall of the permanent lining with NJ-2 type ramming material, and fill the mud layer by layer. The distance between the first layer and the third layer at the bottom is 100-300mm, and the NJ-2 type ramming material is used to find the leveling plane to balance the tolerance between the two layers of bricks and the installation. Then install the thermocouple in the corresponding position according to the drawing. The size of the ramming area is about 800×800mm. When tamping, a stable 150mm high rectangular formwork should be used, and the stirred mixture should be filled into each area of the fixed formwork and vibrated with a vibrating plate. Check the layer thickness at the top of the formwork, and leave a certain space for special sections during ramming construction.
第三层衬体的砌筑砌筑,确定0°和90°轴线并在底部第2层上表面标记之,残铁口在0°轴线上。处理孔口并按照以下进行:用NJ-2捣打料打孔口底层和永久衬,使孔口与底部第一层标高一致。用湿泥浆NJ-3砌筑出铁口砖。出铁口砖需要严格放置于轴线上。出铁口内部砖安装内表面应距离永久衬1200~1600mm,然后干砌异型砖。现场加工使与出铁口接触的准向出铁口末端倾斜。之后沿0°中心线安装异型砖,并在边缘区域沿着90°方向一层层砌筑。仅当需要时用NJ-3湿泥浆补偿砖块公差。用干泥浆平整第三层。在垂直缝之间以及与预制件的缝使用湿泥浆。中间砖与边缘砖的过度部分再第一块边缘砖的下方需要使用捣打料NJ-2型填实。在远离残铁口侧,圆周区域方向上安装一排异形砖后,在异形砖之间使用湿泥浆NJ-3型砌筑。底部圆周区域的砖须现场加工使底层整个圆周和永久衬之间有30-100mm的缝隙。最后使用NJ-2型捣打料填充圆周缝隙。捣打时填充层压缩率为10~30%。各层衬体砌筑前均需使用捣打料对衬体与边部圆周区域侧壁衬的环形缝进行填充,保证各缝体之间无空隙且密度达到自然堆积捣打料密度之上。For the masonry of the third layer of lining, determine the 0° and 90° axes and mark them on the upper surface of the second layer at the bottom, and the residual iron hole is on the 0° axis. Treat the orifice and proceed as follows: Punch the bottom layer and permanent lining of the orifice with NJ-2 ramming compound so that the orifice is at the same level as the bottom first layer. Use wet mud NJ-3 to build taphole bricks. The tap hole bricks need to be placed strictly on the axis. The inner surface of the brick installation inside the tap hole should be 1200-1600mm away from the permanent lining, and then dry-lay special-shaped bricks. On-site machining tilts the end of the quasi-directional tap hole in contact with the tap hole. Then install special-shaped bricks along the 0° centerline, and build layer by layer along the 90° direction in the edge area. Compensate brick tolerances with NJ-3 wet grout only when needed. Level the third layer with dry mud. Use wet grout between vertical seams and seams to preforms. The transition between the middle brick and the edge brick and the bottom of the first edge brick need to be filled with ramming material NJ-2. After installing a row of special-shaped bricks in the direction of the circumferential area away from the iron residual hole, use wet mud NJ-3 type masonry between the special-shaped bricks. Bricks in the bottom perimeter area shall be field machined so that there is a 30-100mm gap between the entire perimeter of the bottom layer and the permanent lining. Finally, use NJ-2 type ramming material to fill the circumferential gap. The compression rate of the filling layer during ramming is 10-30%. Before the masonry of each layer of lining, it is necessary to use ramming material to fill the annular seam between the lining and the sidewall lining in the peripheral area of the edge to ensure that there are no gaps between the seams and that the density is higher than the density of the natural accumulation of ramming material.
对于虹吸出铁炉的砌筑,虹吸出铁炉永久衬由三层标准砖砌筑,砌筑方向按照从虹吸口向溢铁口逐步砌筑的方式,整体支撑结构按照从低往高的方向砌筑,虹吸出铁炉侧衬按照从炉壳向出铁通道逐渐砌筑的方向砌筑。For the masonry of the siphon tap furnace, the permanent lining of the siphon tap furnace is built with three layers of standard bricks. The masonry direction is gradually built from the siphon port to the overflow port. For masonry, the side lining of the siphon tap furnace is built in the direction from the furnace shell to the tap channel.
虹吸出铁炉炉底的第一层砌筑,在清理平整的炉底板上用泥浆NJ-1找水平面。虹吸出铁炉使用以下泥浆安装虹吸出铁炉耐火材料:GR-1隔热砖、NJ-1泥浆、NJ-3泥浆、NJ-4泥浆、FB-1砖、K-1砖和预制件。FB-1砖和K-1砖之间的泥浆缝应为2mm到5mm。活动缝按如下要求:底部永久衬和工作衬之间用干泥浆NJ-3,泥浆缝<3mm。The first layer of the siphon-tapping furnace bottom is built, and the leveling surface is found with mud NJ-1 on the cleaned and leveled furnace bottom. The siphon tap furnace uses the following slurries to install the siphon tap furnace refractories: GR-1 Insulation Brick, NJ-1 Slurry, NJ-3 Slurry, NJ-4 Slurry, FB-1 Brick, K-1 Brick and Prefab. The mud joint between FB-1 brick and K-1 brick should be 2mm to 5mm. The movable joint is as follows: dry mud NJ-3 is used between the bottom permanent lining and the working lining, and the mud joint is less than 3mm.
虹吸出铁炉底部找平层,先在底部钢壳上铺设0~100mm厚的找平层YJ-1。在安装前确认底部第三层顶部和找平层顶部高度差是否与图纸一致,根据要求调整找平层厚度并满足找平层厚度偏差。清洁炉底板,将YJ-1浇筑在凹形炉壳内,将YJ-1浇注料混在区域模板内并用抹子抹平,采用校准板对模板顶部表面找平。To siphon the leveling layer at the bottom of the iron furnace, first lay a leveling layer YJ-1 with a thickness of 0-100mm on the bottom steel shell. Before installation, confirm whether the height difference between the top of the third layer at the bottom and the top of the leveling layer is consistent with the drawing, and adjust the thickness of the leveling layer as required to meet the thickness deviation of the leveling layer. Clean the furnace floor, pour YJ-1 in the concave furnace shell, mix the YJ-1 castable in the area template and smooth it with a trowel, and use the calibration plate to level the top surface of the template.
虹吸出铁炉底部永久衬,用NJ-1泥浆将三层标准砖砌筑在找平层上。按照图纸上的说明布置膨胀缝,用YJ-1填充与炉壳的缝隙。安装时检查与SRV炉底部第三层砖的高度差。如果有必要调整层支架泥浆缝(1~3mm)。顶层砖必须精准的水平放置,否则安放预制件时可能发生问题。The bottom of the siphon-tapping furnace is permanently lined, and three layers of standard bricks are built on the leveling layer with NJ-1 mud. Arrange the expansion joints according to the instructions on the drawing, and fill the gap with the furnace shell with YJ-1. When installing, check the height difference with the third layer of bricks at the bottom of the SRV furnace. If necessary, adjust the layer support mud joint (1 ~ 3mm). The top tile must be placed exactly horizontally, otherwise problems may occur when placing the prefab.
虹吸出铁炉炉墙下部,侧墙前三层砖使用FB-1型耐火砖,用浇筑YJ-1型料填充与壳体间的缝隙。按照膨胀缝的布置,从第四层起使用泥浆NJ-4将隔热砖咬砌砌筑在壳体上。然后开始逐层砌筑永久衬并使用捣打料NJ-2型填充永久衬和隔热砖之间30~100mm膨胀缝,之后砌筑虹吸出铁炉两侧墙之间的隔热层、捣打层和永久衬,直到虹吸出铁炉底部预制件位置为止。在虹吸出铁炉出铁口区域留出一个孔口大小的缝隙。完成预制件安装后才能封闭的区域。The lower part of the furnace wall of the siphon tapping furnace, the first three layers of the side wall are made of FB-1 type refractory bricks, and the gap between the shell and the shell is filled with pouring YJ-1 type material. According to the arrangement of the expansion joints, from the fourth floor onwards, use the mud NJ-4 to bite and masonry the insulating bricks on the shell. Then start to build the permanent lining layer by layer and use the ramming material NJ-2 to fill the 30-100mm expansion joint between the permanent lining and the thermal insulation brick, and then build the thermal insulation layer between the two side walls of the siphon iron furnace, ram Lay down and permanently lining until the bottom preform is siphoned. Leave a hole the size of a gap in the tap hole area of the siphon tap furnace. Areas that cannot be closed until the prefab has been installed.
从熔融还原炉到虹吸出铁炉的通道区域安装保温层和永久衬。当用砖布置拱顶时,降低拱形模具以使拱顶最高点的隔热层和砖之间形成4mm的缝隙,保证必要的膨胀空间。Insulation and permanent lining are installed in the passage area from the smelting reduction furnace to the siphon tapping furnace. When arranging the vault with bricks, lower the arch mould to form a gap of 4mm between the insulation layer at the highest point of the vault and the bricks to ensure the necessary expansion space.
虹吸出铁炉预制件,安装完从SRV炉到虹吸出铁炉通道区域的永久衬和虹吸出铁炉内预制件顶部的永久衬后,开始安装预制件。沿着SRV炉和虹吸出铁炉的方向从中间开始安装预制件。所有预制件之间的泥浆缝用泥浆NJ-3。安装重量大的预制件(230-1750kg)的需要使用提升设备。Syphon cast furnace preforms, install the preforms after installing the permanent lining from the SRV furnace to the area of the siphon cast furnace passage and on top of the preforms inside the siphon cast furnace. Install the preforms from the middle in the direction of the SRV furnace and the siphon-trap furnace. Mud NJ-3 is used for mud joints between all prefabs. The installation of heavy prefabs (230-1750kg) requires the use of lifting equipment.
所有预制件都需配有锚固螺栓并在安装完成后将其移除。锚固螺栓的开口使用YJ-2型浇注料浇注。在安放好所有的预制件后,用捣打料NJ-2填充预制件和永久衬之间60-100mm宽的膨胀缝。捣打时压缩松散的混合料至15%。将 干泥浆NJ-3滑动缝设置在预制件层并按照如下安装其他预制件:伸入虹吸出铁炉的长度必须距离虹吸出铁炉壳体500mm以上。然后完成孔口的砌筑施工并用捣打料NJ-2型填充永久衬和预制件之间的缝隙。All prefabs need to be fitted with anchor bolts and removed after installation. The opening of the anchor bolt is cast with YJ-2 type castable. After placing all the preforms, fill the 60-100mm wide expansion joint between the preform and the permanent lining with ramming compound NJ-2. Compress the loose mix to 15% while pounding. Set the dry mud NJ-3 sliding joint on the prefabrication layer and install other prefabricated parts as follows: The length extending into the siphon tap furnace must be more than 500mm away from the siphon tap furnace shell. The masonry of the orifice is then completed and the gap between the permanent lining and the precast is filled with ramming compound NJ-2.
继续安放预制件,安装SRV炉与虹吸出铁炉连通位置上部预制件,用捣打料NJ-2型从SRV炉端到虹吸出铁炉端填充永久衬和预制件之间的缝隙。Continue to place the preforms, install the preforms on the upper part of the connection between the SRV furnace and the siphon tap furnace, and fill the gap between the permanent lining and the preforms with ramming material NJ-2 from the end of the SRV furnace to the end of the siphon tap furnace.
虹吸出铁炉炉墙上部,先用YJ-2型浇注预制件内的凹槽。然后砌筑隔热砖,之后是永久衬FB-3和工作衬SP-1,请注意所有砖砌筑时需有0-3mm厚的泥浆缝。The upper part of the furnace wall of the siphon casting furnace is siphoned, and the grooves in the prefabricated parts are first poured with the YJ-2 type. Then lay the insulating bricks, followed by the permanent lining FB-3 and the working lining SP-1, please note that all bricks need to have 0-3mm thick mud joints when laying.
使用NJ-2型捣打料轻轻捣打隔热砖和永久衬之间50mm膨胀缝。使用NJ-2型捣打填充SRV炉侧虹吸出铁炉的30~100mm宽的膨胀缝。永久衬纵向膨胀缝须按照图纸说明布置,缝内用可燃沥青毡塞入。膨胀缝内不得有任何残余泥浆杂物。Use NJ-2 type ramming compound to lightly ram the 50mm expansion joint between the insulating brick and the permanent lining. Use NJ-2 type ramming to fill the 30-100mm wide expansion joint of the siphon tap furnace on the side of the SRV furnace. Longitudinal expansion joints of permanent lining shall be arranged in accordance with the drawings, and the joints shall be inserted with combustible asphalt felt. There should be no residual mud debris in the expansion joint.
预制件上方的拱顶布置在永久衬和内衬中。拱顶(堵头层)必须终止于特定标高。因此需要现场加工合门砖。The vaults above the prefabs are arranged in permanent linings and inner linings. The vault (plug level) must terminate at a specific level. Therefore, it is necessary to process the door bricks on site.
对于炉底工作衬和侧墙的砌筑,先安装完属于虹吸出铁炉的预制件后,则可开始安装SRV炉底衬。从预制件开始安装工作,分别从标准砖加工处预制件的连接通道。在垂直方向上加工过的砖块用泥浆NJ-1型砌筑。炉体侧墙厚度在1000-2500mm。For the masonry of the furnace bottom working lining and side walls, after the prefabricated parts belonging to the siphon tapping furnace are installed, the SRV furnace bottom lining can be installed. The installation work starts from the prefabs, respectively, from the connection channels of the prefabs at the standard brick processing. Bricks machined in the vertical direction are masonry with mud NJ-1 type. The thickness of the side wall of the furnace body is 1000-2500mm.
水平缝以及与预制件连接通道的缝隙不得使用泥浆。炉缸内衬原著部分包括一个400~700mm厚的内衬和一个400~700mm后的外衬。打磨过的SP-1砖逐层砌筑。外衬和永久衬之间的缝隙必须为30~100mm。依据图纸在相应位置安装热电偶。图纸上的材料表给出各层的安装砖型、砖量和膨胀填充物(沥青毡)。Slurry shall not be used for horizontal joints and joints with prefabricated channels. The original part of the hearth lining includes an inner lining with a thickness of 400-700 mm and an outer lining with a thickness of 400-700 mm. Polished SP-1 bricks are built layer by layer. The gap between the outer lining and the permanent lining must be 30 to 100 mm. Install the thermocouple in the corresponding position according to the drawing. The material table on the drawing gives the installation brick type, brick quantity and expansion filler (asphalt felt) for each layer.
用干泥浆NJ-1型找齐砖块高度方向上的误差。完成外环每层砖的砌筑后使用捣打料NJ-2型捣打外环砖和永久衬之间30~100mm后的缝隙。压缩混合 料15%是指填充H=100mm混合料并压缩到H=85mm。Use dry mud NJ-1 type to find out the error in the height direction of the bricks. After completing the masonry of each layer of the outer ring, use the ramming material NJ-2 to ram the gap between the outer ring brick and the permanent lining of 30-100mm. Compressing the mix 15% means filling H=100mm mix and compressing to H=85mm.
每层的合门砖需要现场加工,并用湿泥浆NJ-1砌筑,安装炉缸内衬时一个检修孔应已封闭。用标准砖FB-3砌筑人孔隔墙。从开始层到结束层,用1400℃陶瓷纤维毡填充砖块和壳体之间的区域并关闭人孔盖。用干泥浆NJ-3型平整隔墙中砖层表面。保持打开第二人孔以保证安装炉缸内衬时运输材料。因此,需断开人孔区域外层安装工作。逐层交替铺砖形成一个V型的向上自由开口。The door closing bricks of each layer need to be processed on site and built with wet mud NJ-1, and one inspection hole should be closed when installing the hearth lining. The manhole partition wall is built with standard brick FB-3. From the start layer to the end layer, fill the area between the brick and the shell with 1400°C ceramic fiber felt and close the manhole cover. Use dry mud NJ-3 type to level the surface of the brick layer in the partition wall. Leave the second manhole open to allow transport of material when installing the hearth liner. Therefore, it is necessary to disconnect the outer layer of the manhole area for installation work. The bricks are laid alternately layer by layer to form a V-shaped upward free opening.
如图3、图6及图7所示,熔融还原炉的侧壁设置有残铁口,残铁口通道安装高度与所述炉底衬高度相当,残铁口通道以0-15°角度由炉内向外倾斜,且残铁口通道相较于炉底圆周低3-13cm。残铁口远端圆周区域方向上砌筑异形砖,并在砌筑异形砖后放置预制件,预制件附近的设置有接合砖块,底部圆周区域的砖块须使底层整个圆周和永久衬之间有30-100mm的缝隙,缝隙的填充使用捣打料,捣打填充层压缩率为10%-30%。熔融还原炉的侧壁还设置有排渣通道,排渣通道位于渣铁界面处,渣铁界面位于炉底中心水平高度向上2-3.5m,排渣通道随炉衬同步砌筑,向相同高度的砌筑中予以优先砌筑。渣口,使用渣口预制件及其他需要现场加工。加工时应依据预制件的形状来加工砖。渣口和底层永久衬的开口需要使用YJ-1型捣打达到基础水平。用泥浆NJ-5安装预制件。As shown in Figure 3, Figure 6 and Figure 7, the side wall of the smelting reduction furnace is provided with a residual iron port, the installation height of the residual iron port channel is equivalent to the height of the bottom lining of the furnace, and the residual iron port channel is formed at an angle of 0-15°. The inside of the furnace is inclined outward, and the channel of the residual iron hole is 3-13cm lower than the circumference of the furnace bottom. Lay special-shaped bricks in the direction of the peripheral area at the far end of the residual iron mouth, and place prefabricated parts after laying the special-shaped bricks. There are joint bricks near the prefabricated parts. There is a gap of 30-100mm, the gap is filled with ramming material, and the compression rate of the ramming and filling layer is 10%-30%. The side wall of the smelting reduction furnace is also provided with a slag discharge channel. The slag discharge channel is located at the slag-iron interface, and the slag-iron interface is located 2-3.5m above the horizontal height of the center of the furnace bottom. Masonry shall be given priority in masonry. Slag mouth, the use of slag mouth prefabricated parts and others need to be processed on site. During processing, the bricks should be processed according to the shape of the prefabricated parts. The opening of the slag mouth and the bottom permanent lining requires the use of the YJ-1 type ramming to reach the base level. Install the prefab with mud NJ-5.
孔口和永久衬区域的预制件须使用YJ-1型四周捣打缝隙。现场加工两侧砖使其尺寸适合预制件。The prefabricated parts of the orifice and the permanent lining area shall use the YJ-1 type around the ramming gap. Both side bricks were machined on-site to fit the prefab.
对于熔融还原炉熔渣区和煤气室的砌筑,渣区冷却器装置安装完成后,先在冷却壁靠炉壳一侧焊接铜板,然后在冷却板与渣区冷却器装置之间的60-80mm高缝隙内填充TC-1型粉状耐材。For the masonry of the slag zone and gas chamber of the smelting reduction furnace, after the slag zone cooler device is installed, first weld the copper plate on the side of the cooling wall near the furnace shell, and then weld the copper plate between the cooling plate and the slag zone cooler device for 60- The 80mm high gap is filled with TC-1 type powdery refractory material.
为防止物料掉入冷却板之间的缝隙内,在相邻两块冷却板之间的10-20mm缝隙中塞入泡沫板,然后进行涂抹施工,在涂抹未形成强度时将泡沫板拔出。 在炉上部整个区域内计划使用TC-1自流性浇注料并用作单层衬。In order to prevent the material from falling into the gap between the cooling plates, the foam plate is inserted into the 10-20mm gap between the two adjacent cooling plates, and then the application is carried out, and the foam plate is pulled out when the strength is not formed. The TC-1 self-flowing castable is planned to be used over the entire area of the upper part of the furnace and used as a single-layer lining.
浇注混合料分区域施工。混合料的流动性、凝结性和硬化性可在实验室制作模板进行试验,以合适的流动性、凝结时间和良好的外观性能为验收标准。区域尺寸取决于冷却壁大小,区域之间缝隙为施工缝(非膨胀缝),采用错位砌筑,完成内衬砌筑工作后至少凝结硬化48h后方可启动烘炉程序。The pouring mixture is constructed in different areas. The fluidity, coagulation and hardening properties of the mixture can be tested by making a template in the laboratory, with suitable fluidity, setting time and good appearance as the acceptance criteria. The size of the area depends on the size of the cooling wall. The gaps between the areas are construction joints (non-expansion joints), and dislocation masonry is used. After the inner lining is built, the oven program can be started after at least 48 hours of solidification and hardening.
上述方案中,对于各种耐火材料种类及性质要求:In the above scheme, for various types and properties of refractory materials:
Figure PCTCN2021105094-appb-000001
Figure PCTCN2021105094-appb-000001
注:表中部分耐火材料种类为粉状料,故无密度和常温耐压强度Note: Some types of refractory materials in the table are powder materials, so there is no density and compressive strength at room temperature.
实施例2:Example 2:
本申请提供的一种熔融还原炉耐材砌筑方法,还包括对砌筑完成的熔融还原炉进行的热处理工艺,热处理工艺分为两个阶段:A method for building a refractory material for a smelting reduction furnace provided by the present application further includes a heat treatment process for the smelting reduction furnace completed by the masonry, and the heat treatment process is divided into two stages:
具体地,SRV炉烘炉启动前,烘炉程序开始后,按照耐材升温蓄热工艺需要,分两个阶段进行:Specifically, before the start of the SRV furnace oven, after the oven program starts, according to the needs of the refractory heating and heat storage process, it is carried out in two stages:
第一阶段为高温氧化吹扫阶段,单一的高温氧化气体从熔融还原炉炉顶部增压后进入,风量30000-60000Nm 3/h,风压40kpa-160kpa,风温采用阶梯递加方式由初始的100-250℃逐步增加至1000-1300℃。热风从SRV炉顶部热风喷枪进入SRV炉,风量30000-60000Nm 3/h,风温采用阶梯递加方式由初始的150-250℃逐步增加至1000-1100℃,本阶段选取物料喷枪3(南、北煤枪)位置两个临时热电偶平均值作为烘炉曲线参考调整温度点。 The first stage is the high-temperature oxidizing and purging stage. A single high-temperature oxidizing gas enters after being pressurized from the top of the smelting reduction furnace. The air volume is 30000-60000Nm 3 /h, and the air pressure is 40kpa-160kpa. 100-250°C gradually increased to 1000-1300°C. The hot air enters the SRV furnace from the hot air spray gun at the top of the SRV furnace, the air volume is 30000-60000Nm 3 /h, and the air temperature is gradually increased from the initial 150-250 ℃ to 1000-1100 ℃ by steps. The average value of the two temporary thermocouples at the north coal gun) position is used as the reference adjustment temperature point for the oven curve.
第二阶段为高温燃烧成型及冷却固结阶段,风量维持40000-60000Nm 3/h,风温维持1000-1300℃,可燃气体流量由初始800-1000Nm 3/h逐步增加至3500-5000Nm 3/h,当熔融还原炉各部达到预定温度值时,停止可燃气体的配入,维持一定时间后,配入常温不可燃气体冷却固结。 The second stage is the high temperature combustion forming and cooling consolidation stage, the air volume is maintained at 40000-60000Nm 3 /h, the air temperature is maintained at 1000-1300 ℃, and the combustible gas flow is gradually increased from the initial 800-1000Nm 3 /h to 3500-5000Nm 3 /h , When each part of the smelting reduction furnace reaches the predetermined temperature value, the mixing of the combustible gas is stopped, and after a certain period of time, the non-combustible gas at normal temperature is added for cooling and consolidation.
具体地,当SRV炉底部下层耐材温度中值达到200度以上,底部中区耐材温度中值达到430度以上,底部上区耐材温度达到560度以上时,提高可燃烧气体量以天然气热值计算达到4500立方米每小时以上并保持12小时,之后停止热风及可燃气体配入,维持2小时左右,并配入常温不可燃气体冷却固结。Specifically, when the median temperature of the refractory material in the lower layer of the SRV furnace reaches 200 degrees or more, the median temperature of the refractory material in the middle area of the bottom reaches 430 degrees or more, and the temperature of the refractory material in the upper area of the bottom reaches 560 degrees or more, increase the amount of combustible gas with natural gas. The calorific value is calculated to reach more than 4500 cubic meters per hour and maintained for 12 hours. After that, the hot air and combustible gas are stopped for about 2 hours, and non-combustible gas at normal temperature is added for cooling and consolidation.
风量维持40000-6000Nm 3/h,具体可根据配加天然气量以及烟气氧含量调整,风温维持1000-1300℃,设置天然气流量调节阀开度为0%,氮气流量调节阀设置为25%-30%,打开氮气切断阀,通过氮气流量调节阀调整至氮气流量800-1400Nm 3/h,对管路吹扫30s后,天然气流量调节阀开度设置20%,依次打开天然气切断阀,关闭放散阀,关闭氮气切断阀,设置氮气流量调节阀开度为0%,确定天然气喷枪点燃后,通过调整天然气流量调节阀开度,天然气流量由初始800-1000Nm 3/h逐步增加至3500-500Nm 3/h。 The air volume is maintained at 40000-6000Nm 3 /h, which can be adjusted according to the amount of natural gas added and the oxygen content of the flue gas. The air temperature is maintained at 1000-1300°C. The opening of the natural gas flow control valve is set to 0%, and the nitrogen flow control valve is set to 25%. -30%, open the nitrogen shut-off valve, adjust the nitrogen flow rate to 800-1400Nm 3 /h through the nitrogen flow control valve, after purging the pipeline for 30s, set the natural gas flow control valve opening to 20%, open the natural gas shut-off valve in turn, close Release the valve, close the nitrogen shut-off valve, set the opening of the nitrogen flow control valve to 0%, and determine that after the natural gas spray gun is ignited, by adjusting the opening of the natural gas flow control valve, the natural gas flow is gradually increased from the initial 800-1000Nm 3 /h to 3500-500Nm 3 /h.
进一步的第一阶段包括:Further first stages include:
1)平均温度100-150±10℃,升温速度50℃/h,3h升至250-300℃,维持时间15-20h;1) The average temperature is 100-150±10°C, the heating rate is 50°C/h, the temperature rises to 250-300°C in 3h, and the maintenance time is 15-20h;
2)平均温度250-300±10℃,升温速度25℃/h,4h升至350-400℃,维持时间20-25h;2) The average temperature is 250-300±10°C, the heating rate is 25°C/h, the temperature rises to 350-400°C in 4h, and the maintenance time is 20-25h;
3)平均温度350-400±10℃,升温速度25℃/h,8h升至550-600℃,维持时间20-30h。3) The average temperature is 350-400±10°C, the heating rate is 25°C/h, and the temperature rises to 550-600°C in 8h, and the maintenance time is 20-30h.
此过程通过合理的温度选择、升温幅度以及保温时长控制,使0-3层热电偶1、2、3、4,虹吸出铁炉热电偶5温度平稳升高,通过耐材内部预埋以及临时烘炉热电偶等多个测点综合评估严格调控耐材升温速度,能够确保耐材中的 游离水及结晶水缓慢、充分的排除,避免造成耐材升温过程中的开裂或剥落现象发生。In this process, the temperature of thermocouples 1, 2, 3, and 4 of 0-3 layers and the thermocouple 5 of the siphon iron furnace are steadily increased through reasonable temperature selection, temperature increase range and heat preservation time control. The comprehensive evaluation of multiple measurement points such as oven thermocouples strictly controls the heating rate of the refractory material, which can ensure that the free water and crystal water in the refractory material are slowly and fully removed, and avoid cracking or peeling during the heating process of the refractory material.
进一步的第二阶段包括:A further second stage includes:
1)天然气流量800-1000Nm 3/h,维持时间20-25h; 1) The natural gas flow rate is 800-1000Nm 3 /h, and the maintenance time is 20-25h;
2)天然气流量800-1000Nm 3/h,每小时增加100Nm 3/h,5h升至1300-1500Nm 3/h,维持时间10-15h; 2) The natural gas flow rate is 800-1000Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 1300-1500Nm 3 / h in 5h, and the maintenance time is 10-15h;
3)天然气流量1300-1500Nm 3/h,每小时增加100Nm 3/h,5h升至1800-2000Nm 3/h,维持时间10-15h; 3) The natural gas flow rate is 1300-1500Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 1800-2000Nm 3 / h in 5h, and the maintenance time is 10-15h;
4)天然气流量1800-2000Nm 3/h,每小时增加100Nm3/h,5h升至2300-2500Nm 3/h,维持时间10-15h; 4) The natural gas flow rate is 1800-2000Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 2300-2500Nm 3 /h in 5h, and the maintenance time is 10-15h;
5)天然气流量2300-2500Nm 3/h,每小时增加100Nm 3/h,5h升至2800-3000Nm 3/h,维持时间10-15h; 5) The natural gas flow rate is 2300-2500Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 2800-3000Nm 3 /h in 5h, and the maintenance time is 10-15h;
6)天然气流量2800-3000Nm 3/h,每小时增加100Nm 3/h,5h升至3300-3500Nm 3/h,维持时间10-15h; 6) The natural gas flow rate is 2800-3000Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 3300-3500Nm 3 /h in 5h, and the maintenance time is 10-15h;
7)天然气流量3300-3500Nm 3/h,每小时增加100Nm 3/h,5h升至3800-4000Nm 3/h,维持时间10-15h; 7) The natural gas flow rate is 3300-3500Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 3800-4000Nm 3 /h in 5h, and the maintenance time is 10-15h;
8)天然气流量3800-5000Nm 3/h,每小时增加100Nm 3/h,5h升至4300-4500Nm 3/h,维持时间50-60h。 8) The natural gas flow rate is 3800-5000Nm 3 /h, increasing by 100Nm 3 /h per hour, rising to 4300-4500Nm 3 /h in 5h, and the maintenance time is 50-60h.
本阶段为耐材的升温蓄热阶段,通过天然气用量的调整控制0-3层热电偶1、2、3、4,虹吸出铁炉热电偶5按照既定的升温曲线均匀升温,烘炉时间以实际耐材升温幅度为依据进行调整,满足熔融还原生产工艺耐材蓄热要求的判断依据为虹吸出铁炉热电偶5温度达到650-750℃以上且第一层热电偶2温度达到620-680±30℃。This stage is the heating and heat storage stage of the refractory material. The thermocouples 1, 2, 3, and 4 of the 0-3 layers are controlled by adjusting the amount of natural gas. The actual refractory heating rate is adjusted based on the actual refractory heating range, and the judgment basis to meet the refractory heat storage requirements of the smelting reduction production process is that the temperature of the thermocouple 5 of the siphon tapping furnace reaches 650-750 °C and the temperature of the first layer thermocouple 2 reaches 620-680 °C. ±30℃.
本发明中未述及的地方采用或借鉴已有技术即可实现。The places not mentioned in the present invention can be realized by adopting or learning from the existing technology.
本说明书中的各个实施例均采用递进的方式描述,各个实施例之间相同相 似的部分互相参见即可,每个实施例重点说明的都是与其他实施例的不同之处。以上所述仅为本发明的实施例而已,并不用于限制本发明。对于本领域技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本发明的权利要求范围之内。Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. The above descriptions are merely embodiments of the present invention, and are not intended to limit the present invention. Various modifications and variations of the present invention are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims (10)

  1. 一种熔融还原炉耐材砌筑方法,所述熔融还原炉设置有虹吸出铁炉,其特征在于,所述熔融还原炉耐材砌筑方法包括以下步骤:A method for building refractory materials for a smelting reduction furnace, wherein the smelting reduction furnace is provided with a siphon tapping furnace, wherein the method for building a refractory material for a smelting reduction furnace comprises the following steps:
    a)熔融还原炉永久衬的浇筑:将锚固件安装于所述熔融还原炉的铁浴区炉壳,在铁浴区炉内侧安装浇筑模板,在所述模板内整体浇注YJ-1型耐火料,待其凝固后拆除所述模板;a) The pouring of the permanent lining of the smelting reduction furnace: the anchors are installed on the furnace shell of the iron bath area of the smelting reduction furnace, the pouring template is installed inside the furnace in the iron bath area, and the YJ-1 type refractory is integrally poured in the template. , and remove the template after it solidifies;
    b)熔融还原炉炉底衬的砌筑:在炉底用NJ-1型耐火料砌筑形成第一层衬体,在所述第一层衬体上方用FB-1型耐火料砌筑形成第二层衬体,在所述第二层衬体上方用FB-2型耐火料砌筑形成第三层衬体;b) Masonry of the furnace bottom lining of the smelting reduction furnace: the first layer of lining is formed by masonry with NJ-1 type refractory at the furnace bottom, and the FB-1 type refractory is formed on the top of the first layer of lining. The second layer of lining body is built with FB-2 type refractory above the second layer of lining body to form a third layer of lining body;
    c)虹吸出铁炉的砌筑:先铺砌所述虹吸出铁炉底部的找平层,在所述找平层上砌筑所述虹吸出铁炉永久衬,然后对所述虹吸出铁炉的炉墙下部进行砌筑,安装所述虹吸出铁炉预制件,最后对所述虹吸出铁炉的炉墙上部进行砌筑;c) Masonry of the siphon tap furnace: first lay the leveling layer at the bottom of the siphon tap furnace, build the permanent lining of the siphon tap furnace on the leveling layer, and then install the furnace of the siphon tap furnace The lower part of the wall is built, the prefabricated parts of the siphon tap furnace are installed, and finally the top part of the furnace wall of the siphon tap furnace is built;
    d)炉底工作衬和侧墙的砌筑:在所述第三层衬体外侧采用砖块用NJ-1型耐火料逐层砌筑工作衬和侧墙;d) Masonry of furnace bottom working lining and side wall: use bricks to build working lining and side wall layer by layer with NJ-1 type refractory on the outside of the third layer of lining body;
    e)熔融还原炉熔渣区和煤气室的浇筑:首先安装熔融还原炉渣区冷却器装置,在所述渣区冷却器装置靠炉壳一侧焊接熔融还原炉铜板,在所述铜板与所述渣区冷却器装置之间填充高低温膨胀耐材,在炉上部整个区域内使用自流性浇注料浇筑。e) Pouring of the slag area and gas chamber of the smelting reduction furnace: first install a cooler device in the slag area of the smelting reduction furnace, weld the copper plate of the smelting reduction furnace on the side of the furnace shell of the cooler device in the smelting reduction furnace, and connect the copper plate and the High and low temperature expansion refractories are filled between the slag zone cooler devices, and self-flowing castables are used in the entire upper part of the furnace.
  2. 根据权利要求1所述的一种熔融还原炉耐材砌筑方法,其特征在于,A method for building a refractory material for a smelting reduction furnace according to claim 1, wherein,
    所述YJ-1型耐火料主要成分(按重量百分比计):Al 2O 3≥85%; The main component of the YJ-1 type refractory material (by weight percentage): Al 2 O 3 ≥85%;
    所述NJ-1型耐火料主要成分(按重量百分比计):Al 2O 3≥95%,SiO 2≥4%; The main components of the NJ-1 type refractory (by weight percentage): Al 2 O 3 ≥95%, SiO 2 ≥4%;
    所述FB-1型耐火料主要成分(按重量百分比计):Al 2O 3≥65%,MgO≥30%; The main components of the FB-1 type refractory (by weight percentage): Al 2 O 3 ≥ 65%, MgO ≥ 30%;
    所述FB-2型耐火料主要成分(按重量百分比计):Al 2O 3≥75%,MgO≥20%。 The main components of the FB-2 type refractory material (by weight percentage): Al 2 O 3 ≥ 75%, MgO ≥ 20%.
  3. 根据权利要求2所述的一种熔融还原炉耐材砌筑方法,其特征在于,在所述步骤b)中,所述各层衬体砌筑前需找平,且所述各层衬体层内耐火料砌筑采用错位方式砌筑;The method for building a refractory material for a smelting reduction furnace according to claim 2, wherein in the step b), the linings of each layer need to be leveled before being built, and the linings of each layer need to be leveled. The inner refractory masonry is built by dislocation;
    所述第二层衬体找平时,需根据现场安装状况适当调整衬体砖形结构及配合尺寸与间隙,以满足所述第一层衬体和所述第三层衬体均衡及安装公差;When leveling the second-layer lining body, it is necessary to adjust the brick-shaped structure of the lining body and the matching size and clearance according to the installation conditions on site, so as to satisfy the balance and installation tolerance of the first-layer lining body and the third-layer lining body;
    所述各层衬体砌筑前,需使用捣打料对衬体与边部圆周区域侧壁衬的环形缝进行填充。Before each layer of lining is built, ramming material should be used to fill the annular seam between the lining and the side wall lining in the peripheral area of the edge.
  4. 根据权利要求3所述的一种熔融还原炉耐材砌筑方法,其特征在于,在所述步骤b)中,所述第二层衬体从所述熔融还原炉的中心线向周边砌筑,砌筑层数为3-5层;所述第三层衬体砌筑层数为5-7层,且前3-5层在所述第二层的砌筑范围内铺满,剩下层从周边向中心线砌筑,砌筑过程采用物理结构紧密结合。The method for building a refractory material for a smelting reduction furnace according to claim 3, wherein in the step b), the second layer of lining is built from the center line of the smelting reduction furnace to the periphery , the number of masonry layers is 3-5 layers; the number of masonry layers of the third layer of lining is 5-7 layers, and the first 3-5 layers are covered within the masonry range of the second layer, and the remaining layers are From the periphery to the center line, the masonry process is closely combined with the physical structure.
  5. 根据权力要求1所述的一种熔融还原炉耐材砌筑方法,其特征在于,在步骤c)中,所述虹吸出铁炉到熔融还原炉出铁通道区域全部安装保温层和永久衬。A method for building a refractory material for a smelting reduction furnace according to claim 1, characterized in that, in step c), all insulation layers and permanent linings are installed from the siphon tap furnace to the tap channel area of the smelting reduction furnace.
  6. 根据权利要求1所述的一种熔融还原炉耐材砌筑方法,其特征在于,在所述步骤c)中,所述虹吸出铁炉永久衬由三层标准砖砌筑,砌筑方向按照从虹吸口向溢铁口逐步砌筑的方式,整体支撑结构按照从低往高的方向砌筑,虹吸出铁炉侧衬按照从炉壳向出铁通道方向砌筑。The method for building a refractory material for a smelting reduction furnace according to claim 1, wherein in the step c), the permanent lining of the siphon tap furnace is built with three layers of standard bricks, and the building direction is as follows: From the siphon mouth to the tap hole, the overall support structure is built from low to high, and the side lining of the siphon tap furnace is built from the furnace shell to the tap channel.
  7. 根据权利要求6所述的一种熔融还原炉耐材砌筑方法,其特征在于,所述熔融还原炉的侧壁还设置有排渣通道,所述排渣通道位于渣铁界面处,所述渣铁界面位于炉底中心水平高度向上2-3.5m,所述排渣通道随炉衬同步砌筑。The method for building a refractory material for a smelting reduction furnace according to claim 6, wherein the side wall of the smelting reduction furnace is further provided with a slag discharge channel, and the slag discharge channel is located at the slag-iron interface. The slag-iron interface is located 2-3.5m above the horizontal height of the center of the furnace bottom, and the slag discharge channel is built synchronously with the furnace lining.
  8. 根据权利要求1所述的一种熔融还原炉耐材砌筑方法,其特征在于,所述熔融还原炉的侧壁设置有残铁口,所述残铁口通道安装高度与所述炉底衬高度相当,所述残铁口通道以0°-15°角度由炉内向外倾斜,且所述残铁口通道相较于炉底圆周低3-13cm。The method for building a refractory material for a smelting reduction furnace according to claim 1, wherein the side wall of the smelting reduction furnace is provided with a residual iron hole, and the installation height of the channel of the residual iron hole is the same as that of the furnace bottom lining. The heights are the same, the channel of the residual iron mouth is inclined outward from the furnace at an angle of 0°-15°, and the channel of the residual iron mouth is 3-13 cm lower than the circumference of the furnace bottom.
  9. 根据权利要求8所述的一种熔融还原炉耐材砌筑方法,其特征在于,所述残铁口远端圆周区域方向上砌筑异形砖,并在砌筑异形砖后放置预制件,所 述预制件附近设置有接合砖块。The method for building a refractory material for a smelting reduction furnace according to claim 8, wherein the special-shaped bricks are built in the direction of the peripheral area of the distal end of the iron residual hole, and prefabricated parts are placed after the special-shaped bricks are built, so that the A joint brick is arranged near the prefabricated part.
  10. 根据权利要求1所述的一种熔融还原炉耐材砌筑方法,其特征在于,还包括对砌筑完成的熔融还原炉进行的热处理工艺,所述热处理工艺分为两个阶段:A kind of smelting reduction furnace refractory masonry method according to claim 1, is characterized in that, also comprises the heat treatment process that the smelting reduction furnace that masonry completes is carried out, and described heat treatment process is divided into two stages:
    第一阶段为高温氧化吹扫阶段,高温氧化气体从所述熔融还原炉炉顶部增压后进入,风量30000-60000Nm 3/h,风压40kpa-160kpa,风温采用阶梯递加方式由初始的100-250℃逐步增加至1000-1300℃; The first stage is the high-temperature oxidizing and purging stage. The high-temperature oxidizing gas enters after being pressurized from the top of the smelting reduction furnace. 100-250℃ gradually increase to 1000-1300℃;
    第二阶段为高温燃烧成型及冷却固结阶段,风量维持40000-60000Nm 3/h,风温维持1000-1300℃,可燃气体流量由初始800-1000Nm 3/h逐步增加至3500-5000Nm 3/h,当熔融还原炉各部达到预定温度值时,停止可燃气体的配入,维持一定时间后,配入常温不可燃气体冷却固结。 The second stage is the high temperature combustion forming and cooling consolidation stage, the air volume is maintained at 40000-60000Nm 3 /h, the air temperature is maintained at 1000-1300 ℃, and the combustible gas flow is gradually increased from the initial 800-1000Nm 3 /h to 3500-5000Nm 3 /h , When each part of the smelting reduction furnace reaches the predetermined temperature value, the mixing of the combustible gas is stopped, and after a certain period of time, the non-combustible gas at normal temperature is added for cooling and consolidation.
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