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1. 发明授权

US4776930A Process for the preparation of potassium nitrate 失效
标题翻译：硝酸钾制备方法
公开(公告)号：US4776930A
公开(公告)日：1988-10-11
申请号：US70419
申请日：1987-07-07
申请人： Angelo Bianchi , Gaetano Calicchio , Placido Spaziante
发明人： Angelo Bianchi , Gaetano Calicchio , Placido Spaziante
IPC分类号： C01D9/04 , C01D9/18 , C25B1/14 , C25B15/08
CPC分类号： C01D9/18 , C01D9/04 , C25B1/14
摘要： A process is disclosed for the preparation of potassium nitrate by means of the reaction of nitric acid with potassium carbonate, wherein potassium carbonate is obtained by means of an electrochemical process.

2. 发明授权

US4554709A Chain-driven comb head for slivers of textile fibres, particularly for drawing frames 失效
标题翻译：用于纺织纤维条的链式梳头，特别是用于制作画框
公开(公告)号：US4554709A
公开(公告)日：1985-11-26
申请号：US630553
申请日：1984-07-13
申请人： Angelo Bianchi
发明人： Angelo Bianchi
IPC分类号： D01H5/02 , D01G19/22
CPC分类号： D01H5/02
摘要： In a chain-driven comb head for drawing frames, of the type including means for directing compressed air jets at the combs, these means comprise ducts for supplying compressed air to each needle field defined by the combs and slots for generating, from the supplied air, at least one flat jet of compressed air directed outwardly in a predetermined direction which does not intersect the zone of treatment of the sliver between the combs. During movement of the combs, the flat jet of compressed air flows successively over the surfaces of the combs to clean them. The needle-carrying bars making up the combs are rotatably mounted about their axes and have one end out of alignment, the head structure including at least two tracks engaged by the non-aligned ends and shaped so as to cause the combs to orient themselves in a predetermined direction when they pass in front of the flat jet.
摘要翻译：在用于绘制框架的链条驱动梳头中，包括用于将压缩空气射流引导到梳子处的装置的类型的这些类型的装置包括用于将压缩空气供应到由梳子和狭槽限定的每个针场的管道，用于从供应的空气至少一个扁平喷射的压缩空气沿预定方向向外指向，该预定方向与梳子之间的条子处理区域不相交。在梳子运动期间，扁平的压缩空气射流连续地流过梳子的表面以将它们清洁。构成梳子的针运送杆围绕其轴线可旋转地安装并且具有不一致的一端，头部结构包括由非对准端部接合的至少两个轨道并成形为使得梳子将自身定向当它们经过平面射流前面时的预定方向。

3. 发明授权

US4900530A Process for the production of silicon tetrafluoride 失效
标题翻译：四氟化硅生产工艺
公开(公告)号：US4900530A
公开(公告)日：1990-02-13
申请号：US76736
申请日：1987-07-23
申请人： Guido Anania , Angelo Bianchi , Vito Cultrera , Francesco Russo , Giovanni Spagna
发明人： Guido Anania , Angelo Bianchi , Vito Cultrera , Francesco Russo , Giovanni Spagna
IPC分类号： C01B33/107
CPC分类号： C01B33/10705
摘要： A continuous process is disclosed for the production, with a high yield, of high purity silicon tetrafluoride, starting from an aqueous solution of fluorosilicic acid, which comprises:(a) reacting an aqueous solution of fluorosilicic acid with concentrated sulphuric acid, carried out with a short residence time and preferably under fluido-dynamic conditions of turbulence, inside a reaction zone;(b) separating a gaseous stream containing silicon tetrafluoride from a liquid stream of aqueous sulphuric acid, carried out inside a separation zone, directly connected with the reaction zone;(c) washing said gaseous stream with concentrated and cold sulphuric acid carried out inside a washing zone, for the purpose of separating a gaseous stream of purified silicon tetrafluoride; and, possibly(d) further purifying said gaseous stream of purified silicon tetrafluoride by means of techniques of adsorption on an adsorbent solid material.
摘要翻译：公开了一种从氟硅酸水溶液开始生产高纯四氟化硅的连续方法，该方法包括：（a）使氟硅酸的水溶液与浓硫酸反应，在停留时间短，优选在流体动力学条件下的反应区内; （b）从与反应区直接连接的分离区内部进行分离含有四氟化硅的气态物流; （c）在洗涤区内进行浓缩和冷的硫酸洗涤所述气流，以分离纯化的四氟化硅的气流; 并且可能（d）通过在吸附固体材料上的吸附技术进一步纯化纯化的四氟化硅的气流。

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