The utility model belongs to the technical field of high-temperature shaft kiln for magnesia calcination, in particular to a high-temperature shaft kiln sealing energy-saving device for high-purity magnesia calcination, which is characterized in that the outer sleeve, the inner sleeve, the top cover plate and the bottom cover plate are coaxial, the top of the outer sleeve and the inner sleeve are connected with the top cover plate upward, the bottom cover plate is circular, and the water The utility model is horizontally arranged between the lower edge of the outer sleeve and the outer wall of the inner sleeve, and the middle opening of the top cover plate holds a distributor, and the maximum outer diameter of the top cover plate is 2200mm. Compared with the prior art, the utility model has the advantages that: a sealed cover body is arranged at the kiln mouth to closely combine with the kiln internal structure, on the premise of not affecting the installation of the lower hopper and the distributor, the outer diameter of the upper cover plate is reduced, that is to say, the heating area is reduced, the deformation is prevented, the air leakage rate of the kiln is reduced, the absolute value of the negative pressure is at least increased by 500pa, and the energy consumption of the exhaust fan is reduced by 40% compared with the previous one.
【技术实现步骤摘要】
一种高纯镁砂煅烧用高温竖窑密封节能装置
本技术属于镁砂煅烧用高温竖窑
,具体涉及一种高纯镁砂煅烧用高温竖窑密封节能装置。
技术介绍
近年来,我国利用高温竖窑煅烧工艺处理天然菱镁矿,生产出的天然镁砂MgO质量因数达到97%-98%,使我国镁质耐火材料水平有了很大提高。煅烧高纯镁砂所用高温竖窑煅烧过程均是由窑炉中心投料,此类窑炉大多外部以耐火砖(7)和捣打料(8)砌筑,窑外壳(18)为钢板。见图1,上料斗(10)坐设于窑盖板(19)上,上料斗下部中心有布料器(5)进入窑炉内部,窑盖板(19)结构为镁火泥浇注件,表层为钢盖板(22),钢盖板材质为16锰、不锈钢或碳钢,覆盖窑炉上部耐火砖(7)和捣打料(8)的整个上表面,镁火泥浇注体(21)中设有金属锚件(20)。因为窑炉为负压操作,提高窑口负压,有助于减少物料粉化率、颗粒率及窑炉透气率,对于窑炉运行是一个重要的参数及依据,同时也对产品质量有着至关重要的影响。在窑炉烘窑和煅烧的反复提温和反烧过程中,窑炉内会出现明火或异常高温等状态,使窑盖板受热变形,镁火泥浇注体(21)容易脱落,影响产品质量,同时也造成窑炉漏风率增加,漏风率的增加,使窑炉内部负压减少,影响操作判断,在加大排烟风量的同时,排烟温度会更加降低,即增加排烟风机的能耗,影响节能效果。专利申请号为201710216540.7的中国专利技术专利,公开了一种用于超高温竖窑进料端的余热收集装置,该技术方案在常规竖窑进料管的端口处增设了起到热量收集作用的壳体,对从端口处向上辐射的热量起到阻截、收集作用。在 ...
【技术保护点】
1.一种高纯镁砂煅烧用高温竖窑密封节能装置,其特征在于,包括外套筒、内套筒、顶盖板和底封板,所述外套筒和内套筒为同轴设置,所述外套筒和内套筒的顶部向上与顶盖板相连接,所述底封板为圆环形,水平设置于所述外套筒和内套筒的下沿之间,并与所述外套筒和所述内套筒的下沿焊接在一起,所述顶盖板的中间开孔容纳布料器,所述顶盖板的最大外直径为2200mm。/n
【技术特征摘要】
1.一种高纯镁砂煅烧用高温竖窑密封节能装置,其特征在于,包括外套筒、内套筒、顶盖板和底封板,所述外套筒和内套筒为同轴设置,所述外套筒和内套筒的顶部向上与顶盖板相连接,所述底封板为圆环形,水平设置于所述外套筒和内套筒的下沿之间,并与所述外套筒和所述内套筒的下沿焊接在一起,所述顶盖板的中间开孔容纳布料器,所述顶盖板的最大外直径为2200mm。
2.根据权利要求1所述的一种高纯镁砂煅烧用高温竖窑密封节能装置,其特征在于,所述外套筒的长度为300~500mm。
3.根据权利要求1所述的一种高纯镁砂煅烧用高温竖窑密封节能装置,其特征在于...
【专利技术属性】
技术研发人员:刘铁宁,白立民,付文博,
申请(专利权)人:亨特利海城镁矿有限公司,
类型:新型
国别省市:辽宁;21
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