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2. 发明授权

KR100369932B1 액체로부터생성되는고체물질을건조하는방법및장치 失效
公开(公告)号：KR100369932B1
公开(公告)日：2003-04-11
申请号：KR1019960702928
申请日：1994-11-25
申请人： 리오 틴토 알칸 인터내셔널 리미티드
发明人： 해미시박스터 , 앤드류니콜슨캐러서스 , 한스피터엘크자에르 , 브라얀히스콕스 , 젠스펭거 , 벤니이.라하우게 , 호세질풀페이로페르난데스
IPC分类号： F26B3/12
CPC分类号： F26B3/12 , F26B17/102
摘要： A method and apparatus are disclosed for continuously drying, preferably with agglomeration and/or coating and sizing, and separating a solid product from a liquid feed material, especially bauxite slurry which passes through a very sticky phase during drying, without significant encrustation of the equipment used. The apparatus comprises a drying vessel (1, 101) having a lower inlet (2, 102) for a drying gas and an upper outlet (7, 107) for a mixture of the drying gas and entrained dried particles of solid material, an upwardly directed spray nozzle (5, 105) for the liquid bearing solid material positioned within the lower inlet (2, 102) for the drying gas but spaced from the walls thereof, means (8, 10, 108, 110) for separating the entrained dried particles from their mixture with the drying gas, means (17, 117) for returning the separated dried particles to the drying vessel (1, 101), wherein the lower portion of the drying vessel (1, 101) is shaped to guide descending particles of the solid material being dried by the drying gas and those being returned by the separating means (17, 117) back towards the drying gas inlet (2, 102), and an outlet (21, 121) for the dried particles, characterised in that the apparatus includes means for continuously removing the dried particles positioned with their outlet (21, 121) below the spray nozzle (5, 105) and in that the drying gas inlet (2, 102) is arranged to supply the drying gas into the drying vessel (1, 101) past the spray nozzle (5, 105) in substantially parallel flow leaving a lower moving boundary layer adjacent the walls of the drying gas inlet (2, 102) through which dried particles can fall under gravity towards their outlet (21, 121), when the apparatus is in use. Average particle sizes for the dried particles of at least 0.5 mm, and preferably from 2 to 15 mm, are attainable.
摘要翻译：公开了一种用于连续干燥的方法和设备，优选具有附聚和/或涂覆和施胶，并且从液体进料材料中分离出固体产物，特别是在干燥过程中通过非常粘稠的相的铝土矿浆液，而不显着结垢用过的。该设备包括具有用于干燥气体的下部入口（2,102）和用于干燥气体和夹带的干燥固体物质颗粒的混合物的上部出口（7,107）的干燥容器（1,101），向上（8,10,108,110），用于将含液固体固体材料定位在用于干燥气体的下入口（2,102）内但与其壁隔开的定向喷嘴（5,105）;用于将夹带的干燥物从其与干燥气体的混合物中分离颗粒，用于将分离的干燥颗粒返回到干燥容器（1,101）的装置（17,117），其中干燥容器（1,101）的下部形成为引导下降颗粒通过干燥气体干燥的固体材料和由分离装置（17,117）返回干燥气体入口（2,102）的固体材料和干燥颗粒的出口（21,121），其特征在于，该设备包括用于连续除去放置有干燥颗粒的装置其特征在于，所述干燥气体入口（2,102）布置成将所述干燥气体供应到所述干燥容器（1,101）中经过所述喷雾喷嘴（5,105），并且所述干燥气体入口当处于使用中时，干燥气体入口（2,102）的壁附近留下一个较低的移动边界层，干燥的颗粒在重力作用下可通过该边缘落到其出口（21,121）处。可获得至少0.5mm，优选2至15mm的干燥颗粒的平均粒度。＆lt;图像＆GT;

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