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    • 7. 发明授权
    • Process for production of aluminum hydroxide from ore containing alumina
    • 从含氧化铝的矿石生产氢氧化铝的方法
    • US5545384A
    • 1996-08-13
    • US465620
    • 1995-06-05
    • Takuo HaratoTakahiro IshidaYoshio KumagaeMichikazu InamiKazuhisa IshibashiMitsuaki Murakami
    • Takuo HaratoTakahiro IshidaYoshio KumagaeMichikazu InamiKazuhisa IshibashiMitsuaki Murakami
    • C01F7/06C01F7/47C01F7/00C01F7/02C22B21/00
    • C01F7/062C01F7/47
    • A process for the production of aluminum hydroxide from an alumina-containing ore comprising, in a process for the production of aluminum hydroxide involving extraction of alumina from an alumina-containing ore by an aqueous alkaline solution, supplying a slurry containing the alumina-containing ore at a high solid content which is prepared from a small amount of an alkaline solution together with an aqueous alkaline solution which is so preheated to a temperature that a preheated temperature is enough high to have a temperature after the mixing with the slurry which is higher than an extraction temperature of alumina, simultaneously or after the mixing them, to an extraction apparatus comprising of a tube reactor, extracting alumina from the alumina-containing ore under extraction conditions of a temperature of 120.degree.-160.degree. C. and an extraction time within 10 minutes, separating dissolution residue from an extract solution immediately after the extraction, desilicating the extract solution, and adding seeds of aluminum hydroxide to the extract solution which is desilicated so as to precipitate aluminum hydroxide. By the production process, it is possible to economically produce aluminum hydroxide with little contamination by silica from the alumina-containing ore with a high content of the reactive silica.
    • 一种用于从含氧化铝的矿石生产氢氧化铝的方法,包括在生产氢氧化铝的方法中涉及通过碱性水溶液从含氧化铝的矿石中提取氧化铝,提供含有含氧化铝的矿石 在高固体含量下,由少量的碱性溶液与碱性水溶液一起制备,碱水溶液如此预热至预热温度足够高以使浆料混合后的温度高于 将氧化铝的同时或混合后的提取温度提取到包括管式反应器的提取装置中,在120-116℃的提取条件下从含氧化铝的矿石中提取氧化铝,提取时间在 10分钟后,在提取后立即从提取液中分离出溶解残渣,使提取物脱硅 溶液,并将氢氧化铝的种子加入到脱液的提取液中以沉淀氢氧化铝。 通过生产过程,可以经济地生产具有高含量的反应性二氧化硅的来自含氧化铝的矿石几乎不受二氧化硅污染的氢氧化铝。
    • 9. 发明授权
    • Method and apparatus for making a metal can
    • 制造金属罐的方法和装置
    • US4536243A
    • 1985-08-20
    • US552057
    • 1983-11-02
    • Tsuneo ImataniHisakazu YasumuroMichio WatanabeHideo KurashimaKazuhisa Ishibashi
    • Tsuneo ImataniHisakazu YasumuroMichio WatanabeHideo KurashimaKazuhisa Ishibashi
    • B21D51/26
    • B21D51/26B21D51/2684
    • A method of, and apparatus for, manufacturing a metal can (1) with an annular seam (5) which is capable of withstanding high internal pressures and resisting chemical action. A piece of thermoplastic tape is heat bonded to the outer surface (10a.sub.3) of the open end portion (10a ) of a first can section (10) so as to leave a portion (11a) projecting therefrom. After being bent radially inwardly of the first can section, the projecting tape portion is further folded back into forced contact with the inner surface (10a.sub.2) of the open end portion of the first can section by means of a mandrel (16). The open end portion of the first can section is then heated, with the fold of the tape held pressed against its inner surface by the mandrel, to cause adhesion of the thermoplastic tape to the outer surface, edge (10a.sub.1), and inner surface of the open end portion of the first can section. An adhesive layer (4) is thus provided. This open end portion of the first can section is then press-fitted in the open end portion (2a) of a second can section (2), and the joint (44) therebetween is heated to cause adhesion of the lapping open end portions of the can sections to each other via the adhesive layer.
    • PCT No.PCT / JP83 / 00072 Sec。 371日期:1983年11月2日 102(e)1983年11月2日日期PCT提交1983年3月8日PCT公布。 出版物WO83 / 03066 日期:1983年9月15日。一种用于制造具有能够承受高内压并抵抗化学作用的环形接缝(5)的金属罐(1)的方法和设备。 将一片热塑性带热粘合到第一罐部(10)的开口端部(10a)的外表面(10a3)上,以留下从其突出的部分(11a)。 在第一罐部分径向向内弯曲之后,突出的带部分通过心轴(16)进一步折回到与第一罐部分的开口端部的内表面(10a2)强制接触。 然后加热第​​一罐段的开口端部分,其中带的折叠部通过心轴压靠其内表面,以使热塑性带材粘合到外表面,边缘(10a1)和内表面 第一罐段的开口端部分。 因此提供了粘合剂层(4)。 然后将第一罐部分的该开口端部压配合在第二罐段(2)的开口端部(2a)中,并且将其间的接头(44)加热,从而使研磨开口端部 罐部分通过粘合剂层彼此相连。