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    Method of increasing the bulk density of iron oxide powder
    91.
    发明授权
    Method of increasing the bulk density of iron oxide powder 失效
    增加氧化铁粉体积密度的方法

    公开(公告)号：US5718880A

    公开(公告)日：1998-02-17

    申请号：US693464

    申请日：1996-08-02

    Applicant: Taiichi Hijikata

    Inventor： Taiichi Hijikata

    IPC: C01G49/02 ,  B01J2/22 ,  C22B1/24 ,  C22B1/14

    CPC classification number: C22B1/24 ,  B01J2/22

    Abstract: A method is provided of rapidly increasing the bulk density of an iron oxide powder by preventing the powder, processed by a roller consolidation machine, from flying up. The method consists of feeding an iron oxide powder, whose apparent bulk density is 0.4-0.6, into a sealed tank, depressurizing the tank to a vacuum of 100-200 torr, and revolving the rotating roller and rotating plow at a revolving speed of 1-2 m/sec.

    Abstract translation: 提供一种通过防止由辊式固结机加工的粉末飞起来快速增加氧化铁粉末的堆积密度的方法。 该方法包括将表观密度为0.4-0.6的氧化铁粉末进料到密封罐中，将罐减压至100-200托的真空，并以1转的转速旋转旋转辊和旋转犁 -2 m / sec。

    Reduction of residual chloride in iron oxides
    93.
    发明授权
    Reduction of residual chloride in iron oxides 失效
    减少氧化铁中残留的氯化物

    公开(公告)号：US5597547A

    公开(公告)日：1997-01-28

    申请号：US421648

    申请日：1995-04-13

    Applicant: David M. Hamilton, Jr.

    Inventor： David M. Hamilton, Jr.

    IPC: C01G49/02

    CPC classification number: C01G49/02 ,  Y10S423/01

    Abstract: A process for reducing the residual chloride present in iron oxides, particularly in regenerated iron oxides produced from hydrochloric acid waste liquid generated from steel pickling, by post-synthesis treatment of the iron oxides with yellow iron oxide, and subsequently heating the mixture at a temperature sufficient to release at least a part of the crystalline water contained in the yellow iron oxide to facilitate the removal of residual chloride present in iron oxides. The purified regenerated iron oxides are particular suitable for making high-grade ferrites.

    Abstract translation: 一种减少氧化铁中存在的残留氯化物的方法，特别是在由酸洗产生的盐酸废液中产生的再生铁氧化物中，通过用黄色氧化铁合成处理氧化铁，然后在温度 足以释放黄色氧化铁中所含的至少一部分结晶水，以便除去存在于氧化铁中的残留氯。 纯化的再生铁氧化物特别适用于制备高品位铁氧体。

    Process for pelletising particles of alkali metal ferrite
    95.
    发明授权
    Process for pelletising particles of alkali metal ferrite 失效
    造粒碱金属铁氧体颗粒的方法

    公开(公告)号：US5552099A

    公开(公告)日：1996-09-03

    申请号：US397144

    申请日：1995-05-03

    Applicant: Heiko Wunder ,  Robert E. Scott-Young ,  Kenneth N. Maddern ,  Jack Scukovic

    Inventor： Heiko Wunder ,  Robert E. Scott-Young ,  Kenneth N. Maddern ,  Jack Scukovic

    IPC: B01J2/14 ,  C01D1/04 ,  C01G49/00 ,  C01G49/02 ,  D21C11/00 ,  D21C11/04 ,  D21C11/12 ,  B29B9/08

    CPC classification number: B01J2/14 ,  C01D1/04 ,  C01G49/0027 ,  D21C11/0085 ,  D21C11/04 ,  D21C11/12 ,  C01P2002/32 ,  C01P2004/61 ,  F23G2209/101 ,  Y10S423/03

    Abstract: The specification describes a process for pelletising particles of an alkali metal ferrite with an aqueous binder such as a black liquor derived from pulping wood chips. The particles are ground and fed to a microgranulator in measured quantities together with measured quantities of aqueous binder. The particles are ground such that they have an even size distribution about a mean in the range from 25 to 50 microns. The particles are mixed with the binder in the microgranulator to form microgranules which are fed to a pelletising pan. The temperature of the microgranules on the pelletising pan is controlled by cooling either or both the alkali metal ferrite or aqueous binder prior to measuring them into the microgranulator. A pan temperature of less than 70.degree. C. is disclosed.

    Abstract translation: PCT No.PCT / AU93 / 00500 Sec。 371日期：1995年5月3日 102（e）日期1995年5月3日PCT提交1993年9月30日PCT公布。 公开号WO94 / 07595 日期1994年04月14日该说明书描述了一种用水性粘合剂如来自制浆木片的黑液造粒碱金属铁氧体颗粒的方法。 将颗粒研磨并以测量的量与测量量的含水粘合剂一起进料至微粒化微球。 将颗粒磨碎，使得它们具有约25至50微米范围内的平均尺寸分​​布。 将颗粒与微粒体中的粘合剂混合以形成微丸，将其送入造粒盘。 在将颗粒测量到微晶粒之前，通过冷却碱金属铁氧体或水性粘合剂中的任一种或两者来控制造粒盘上的微粒的温度。 公开了低于70℃的锅温。

    Process for producing monohydrated beta-ferric oxide
    98.
    发明授权
    Process for producing monohydrated beta-ferric oxide 失效
    一水合β-氧化铁的制备方法

    公开(公告)号：US5370857A

    公开(公告)日：1994-12-06

    申请号：US46787

    申请日：1993-04-13

    Applicant: J. Paul Deininger

    Inventor： J. Paul Deininger

    IPC: C01G49/00 ,  C01G49/06 ,  C01G49/02

    CPC classification number: C01G49/06 ,  C01G49/0081 ,  C01P2006/60

    Abstract: A process for producing stable, high purity ferrate (VI) employing beta-ferric oxide (beta-Fe.sub.2 O.sub.3), and preferably monohydrated beta-ferric oxide (beta-Fe.sub.2 O.sub.3.H.sub.2 O) as the iron source. An improved process for producing stable, high purity beta-ferric oxide is also disclosed. The process results in the efficient and effective productions of ferrate with high yields and small amounts of waste production. A large portion of the unused product stream can be recycled to the ferrate reactor for the production of additional ferrate.

    Abstract translation: 使用β-氧化铁（β-Fe 2 O 3），优选一水合的β-氧化铁（β-Fe 2 O 3·H 2 O）作为铁源生产稳定，高纯度的铁酸盐（VI）的方法。 还公开了用于生产稳定的高纯度β-氧化铁的改进方法。 该过程导致高产率高效率和有效的高产率和少量废物生产的生产。 大部分未使用的产物流可以再循环到高铁酸盐反应器中以生产额外的高铁酸盐。

    Manufacture of ferric sulphate compounds
    100.
    发明授权
    Manufacture of ferric sulphate compounds 失效
    硫酸铁化合物的制造

    公开(公告)号：US5332565A

    公开(公告)日：1994-07-26

    申请号：US986025

    申请日：1992-12-04

    Applicant: Jaroslav R. Derka

    Inventor： Jaroslav R. Derka

    IPC: C01G49/14 ,  C01G49/02

    CPC classification number: C01G49/14 ,  Y10S423/03

    Abstract: A process is provided for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapor phase, the process comprising the oxidation of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions: ##EQU1## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying the liquid phase including a solution containing Fe.sup.++ introduced to the closed vessel, through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapor space of the closed vessel and wherein substantially only Ferric ions is present in the liquid phase in the closed vessel relative to the amounts of Ferric and Ferrous ions prior to the addition of FeSO.sub.4.

    Abstract translation: 提供了一种用于在含有液相和气相的密闭容器中从硫酸亚铁制造硫酸铁化合物的方法，该方法包括使用NOx作为催化剂在封闭容器中使用商业氧气将Fe ++氧化成Fe +++ 其中x是1和2之间的数字，包括1和2，并且其中该过程包括以下反应： + TR 到两（2），y是等于或 大于零（0）且小于3n，并且其中Fe ++的氧化通过将包含含有Fe ++的溶液的液相喷射到封闭容器中，通过包围在蒸气空间中的NO，NO 2和O 2的反应云 封闭的容器，并且其中在加入FeSO 4之前相对于铁和亚铁离子的量，在密闭容器中基本上只有铁离子存在于液相中。

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