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    • 8. 发明授权
    • Method of refining ferrous ion-containing acid solution
    • 精制含亚铁离子的酸溶液的方法
    • US4889697A
    • 1989-12-26
    • US280378
    • 1988-12-05
    • Tsutomu FukushimaTsugio NakaoKasane YamashitaTakao KomuroKatsuhiro Nishi
    • Tsutomu FukushimaTsugio NakaoKasane YamashitaTakao KomuroKatsuhiro Nishi
    • C01G49/00C01G49/06C23G1/36
    • C23G1/36C01G49/06C01P2006/80Y10S423/01Y10S423/02
    • According to the subject method of refining a ferrous ion-containing acid solution, a metal selected from a group including Al, Cr, V, B, and Zn or an acid solution of that metal is added to a ferrous ion-containing acid solution, such as an acid solution which remains after steel is washed with an acid. The pH value of the acid solution is controlled to be within the range of 3.5 to 6 by adding an alkali liquid to the acid solution, whereby a hydroxide salt of the added metal is produced in the acid solution and the impurities in the acid solution are captured by the produced hydroxide salt. As a result, the impurities can be eliminated from the acid solution such that the Si component (e.g., SiO.sub.2) content in the acid solution is within the range of 2 to 3 ppm or less. Since the content of the other impurities such as Al, Ti, and Cr can also be reduced, a high-purity iron oxide can be obtained from the resultant acid solution.
    • 根据本发明的含有亚铁离子的酸溶液的方法,将含有Al,Cr,V,B和Zn的金属或该金属的酸溶液中的金属加入到含亚铁离子的酸溶液中, 例如在用酸洗涤钢之后残留的酸溶液。 通过向酸性溶液中加入碱液将酸溶液的pH值控制在3.5〜6的范围内,由此在酸溶液中产生添加金属的氢氧化物盐,酸溶液中的杂质为 由产生的氢氧化物盐捕获。 结果,可以从酸溶液中除去杂质,使酸溶液中的Si成分(如SiO 2)含量在2〜3ppm以下的范围内。 由于还可以减少Al,Ti和Cr等其它杂质的含量,所以可以从得到的酸溶液中获得高纯度的氧化铁。
    • 10. 发明授权
    • Method for melting incineration residue and apparatus therefor
    • 熔化焚烧渣的方法及其设备
    • US6084903A
    • 2000-07-04
    • US987708
    • 1997-12-09
    • Tsutomu FukushimaYoshinari FujisawaKeisuke NakaharaTsuyoshi NakaoMasahiro Sudou
    • Tsutomu FukushimaYoshinari FujisawaKeisuke NakaharaTsuyoshi NakaoMasahiro Sudou
    • C03B5/00C03B5/02C03B5/027H05B3/60
    • C03B5/005C03B5/021C03B5/0275Y02E20/12Y02P40/52
    • A method of melting an incineration residue includes steps of: charging an incineration residue containing salts into a melting furnace; heating the charged incineration residue in the melting furnace to produce a melt which includes a molten slag layer and a molten salt layer on the molten slag layer; controlling a temperature of the molten salt in the molten salt layer; discharging the molten slag from the melting furnace; and discharging the molten salt from the melting furnace. An apparatus for melting an incineration residue includes: a melting furnace main body, having a molten slag hold-up section and a molten salt hold-up section on the molten slag hold-up section, into which an incineration residue containing salts is charged; a charging device for charging the incineration residue in the melting furnace main body; a heating device for melting the charged incineration residue to produce a melt comprising a molten slag in the molten slag hold-up section and a molten salt being in the molten salt hold-up section; a control device for controlling a temperature of the molten salt in the molten salt hold-up section; a slag discharge port for discharging the molten slag from the molten slag hold-up section; and a salt discharge port for discharging the molten salt from the molten salt hold-up section.
    • 熔化焚烧残渣的方法包括以下步骤:将含有盐的焚烧残渣装入熔化炉; 对熔融炉内的带电焚烧残渣进行加热,制成熔融炉渣层和融熔盐层的熔融物; 控制熔融盐层中熔融盐的温度; 从熔炉排出熔渣; 并从熔化炉中排出熔融盐。 一种用于熔化焚烧残渣的设备包括:熔融炉主体,其上具有熔渣保持部分和在熔渣保持部分上的熔融盐滞留部分,含有焚烧残渣的盐被加入到其中; 用于对熔化炉主体中的焚烧残渣进行充电的充电装置; 一个加热装置,用于熔化带电的焚烧残渣,以产生一熔化渣,该熔化物包括在熔渣保持部分中的熔融炉渣和一熔融盐在熔盐保持部分中; 用于控制所述熔融盐滞留部中的所述熔融盐的温度的控制装置; 用于从熔渣保持部排出熔渣的排渣口; 以及用于从熔融盐保持部排出熔融盐的盐排出口。