A cover-type smelting furnace includes a furnace wall, which is made of refractory bricks. The furnace wall is provided with tuyere bricks. The tuyere bricks are composed of upper and lower composite bricks. The radian and thickness of upper and lower composite bricks are matched with the furnace wall. The upper composite bricks and/or lower composite bricks are provided with a spray gun channel, which inclines downward from outside to inside. The angle between the spray gun passage and the water level is 30 to 60 degrees. The outer side of the furnace wall is provided with an arc-shaped pressure cover for covering the tuyere. The arc-shaped pressure cover is provided with a through hole corresponding to the spray gun passage. The utility model can effectively solve the production problems such as serious damage to sleeve bricks and brick cores, low service life of sleeve bricks and brick cores, high price of seat bricks, sleeve bricks and brick cores, and large quantity of bricks prepared by burning or scouring too short time of the tuyere base bricks. When the furnace body needs to be repaired, it can be repaired outside the furnace when the molten pool is small, avoiding cold repair shutdown, effectively reducing the number and time of cold repair, and greatly increasing the starting rate.
【技术实现步骤摘要】
一种压盖式冶炼炉
本技术属于有色金属冶炼领域,具体涉及一种压盖式冶炼炉。
技术介绍
在有色金属冶炼行业,尤其是铜冶炼行业,回转式阳极精炼炉是最主要的精炼技术之一。阳极精炼过程主要是对吹炼粗铜进行氧化除杂、还原除氧进而得到纯度99.3wt/%以上的阳极铜。阳极精炼过程包括进料、氧化扒渣、还原、浇铸四个作业周期,其中氧化扒渣和还原过程均是通过炉体一侧风口进行作业,氧化期通入压缩空气,还原期通入天然气、重油或煤粉等还原剂。风口上设有通孔,通过通孔可以向冶炼炉的熔池供给氧化压缩空气或者还原用的天然气、重油、煤粉等反应介质。风口在阳极精炼炉不作业时置于熔池以上,氧化还原作业时倾动炉体使风口置于熔池内,故风口区工作面温度波动最为剧烈,风口区域的内衬腐蚀最为严重,此外,粗铜含铅过高还需加入定量的石英砂造渣,石英砂加剧了此区域内衬砖的冲刷和化学腐蚀,6个月左右砖体整体消减2/3,为避免风口区域漏铜危险,需要停炉冷修挖补,导致系统停车12~15天,严重制约了生产稳定连续运行。目前行业内设计安装的风口普遍采用座砖、套砖、砖芯组合式,此设计优点是可在套砖、砖芯烧损时进行热修更换,但在工作过程中也存在以下问题:第一、此设计风口座砖不能热修更换,风口座砖在烧损或冲刷过短时对套砖、砖芯损坏严重,严重影响套砖、砖芯的使用寿命。实际应用中每生产几个月需冷修挖补一次,冷修时间12~15天,严重限制冶炼炉的开车率和处理量。第二、此设计风口装置中座砖、套砖、砖芯价格昂贵,备砖量大,严重占用资金,不利于生产组织和降低生产成本。因此,在利用阳极精炼喷嘴时,如何为喷嘴提供一种设计简单、价格便宜、可具 ...
【技术保护点】
1.一种压盖式冶炼炉,包括炉墙,其特征是:所述炉墙由耐火砖砌筑而成,所述炉墙上设有风口,风口内砌有风口砖,所述风口砖由上组合砖和下组合砖组成,上、下组合砖的弧度和厚度均和炉墙相适配,上组合砖和/或下组合砖上设有喷枪通道,喷枪通道从外至内斜向下倾斜,且喷枪通道和水平面的夹角为30~60°,所述炉墙的外侧设有用以将风口盖住的弧形压盖,所述弧形压盖上设有和喷枪通道对应的通孔。
【技术特征摘要】
1.一种压盖式冶炼炉,包括炉墙,其特征是:所述炉墙由耐火砖砌筑而成,所述炉墙上设有风口,风口内砌有风口砖,所述风口砖由上组合砖和下组合砖组成,上、下组合砖的弧度和厚度均和炉墙相适配,上组合砖和/或下组合砖上设有喷枪通道,喷枪通道从外至内斜向下倾斜,且喷枪通道和水平面的夹角为30~60°,所述炉墙的外侧设有用以将风口盖住的弧形压盖,所述弧形压盖上设有和喷枪通道对应的通孔。2.根据权利要求1所述压盖式冶炼炉,其特征是:上组合砖和下组合砖对称设置,即所述上组合砖从上至下分为三层,上层为砖平拱,中层为过梁砖,下层为座砖组合砖,所述下组合砖从下至上分为三层,下层为...
【专利技术属性】
技术研发人员:韩战旗,彭国敏,廖忠义,郭引刚,俎小凤,王伯义,梁高喜,李军学,闫宁,
申请(专利权)人:河南中原黄金冶炼厂有限责任公司,
类型:新型
国别省市:河南,41
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