利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.05 秒)

    Process for the reduction of the sodium hydroxide losses of the Bayer-type alumina production
    14.
    发明授权
    Process for the reduction of the sodium hydroxide losses of the Bayer-type alumina production 失效
    降低拜耳型氧化铝生产的氢氧化钠损失的方法

    公开(公告)号：US4486393A

    公开(公告)日：1984-12-04

    申请号：US469140

    申请日：1983-02-23

    申请人： Gyorgy Baksa ,  Jozsef Boros ,  Gyula Horvath ,  Balazs Ihasz ,  Zoltan Pais ,  Matyas Rainiss ,  Ferenc Sitkei ,  Karoly Solymar ,  Bela Toth ,  Ferenc Vallo ,  Istvan Voros ,  Maria Orban nee Kelemen ,  Jozsef Zoldi

    发明人： Gyorgy Baksa ,  Jozsef Boros ,  Gyula Horvath ,  Balazs Ihasz ,  Zoltan Pais ,  Matyas Rainiss ,  Ferenc Sitkei ,  Karoly Solymar ,  Bela Toth ,  Ferenc Vallo ,  Istvan Voros ,  Maria Orban nee Kelemen ,  Jozsef Zoldi

    IPC分类号： C01F7/06

    CPC分类号： C01F7/066

    摘要： The invention relates to a process for the reduction of sodium hydroxide losses of the Bayer-cycle by modified causticization of red mud which comprisessubjecting an optionally previously concentrated red mud slurry led off from the red mud washing line by ramification and containing a liquid phase which has a concentration of 5-40 g. caustic Na.sub.2 0/1. caustification by adjusting the lime content expressed as CaO through addition of lime or lime milk to 1-3.2 moles per mole Al.sub.2 O.sub.3, preferably to 2-2.5 moles per mole Al.sub.2 O.sub.3, related to the total Al.sub.2 O.sub.3 content of the slurry;stirring the slurry for 0.3-5 hours at a temperature of 70.degree.-110.degree. C., preferably at 80.degree.-100.degree. C.;adding to the slurry 3-4 moles, preferably 3.2-3.4 moles, of soda related to 1 mole of the originally dissolved Al.sub.2 O.sub.3, and continuing the stirring for 1-4 hours at 80.degree.-100.degree. C., preferably at a temperature of 90.degree.-95.degree. C.;if necessary causticizing the excess of soda by adding lime or lime milk by methods known per se;if desired concentrating the slurry thus obtained and re-introducing the liquid phase thereof to the red mud washing unit which corresponds to the sodium hydroxide content thereof;and re-entering the slurry to the red mud washing line.The advantages of the process of the present invention are as follows: the sodium hydroxide losses of different origin of Bayer-type alumina production are recovered by a single operation step, the process is simple, requires no expensive equipment and is economical.

    摘要翻译： 本发明涉及通过红泥的改性苛化来降低拜耳 - 循环的氢氧化钠损失的方法，该方法包括将由红泥浆清洗线引出的任选预先浓缩的红泥浆经分散和含有液相 浓度为5-40g。 苛性钠Na20 / 1。 通过将石灰或石灰乳添加为1-3.2摩尔/摩尔Al 2 O 3，优选为2-2.5摩尔/摩尔Al 2 O 3，通过调整CaO表示的石灰含量与浆料的总Al 2 O 3含量相关; 在70-110℃，优选在80℃-100℃下搅拌该浆料0.3-5小时。 向浆料中加入3-4摩尔，优选3.2-3.4摩尔与1摩尔原始溶解的Al 2 O 3有关的苏打，并在80℃-100℃下，优选在 90°-95℃。 如果需要，通过本身已知的方法加入石灰或石灰乳来苛化苏打水; 如果需要浓缩由此获得的浆料并将其液相再引入对应于其氢氧化钠含量的红泥洗涤单元; 并将浆料重新进入红泥清洗线。 本发明方法的优点如下：通过单一操作步骤回收拜耳式氧化铝生产不同来源的氢氧化钠损失，工艺简单，不需要昂贵的设备，而且经济。

    6-Amino-5.beta.,19-cycloandrostane derivatives
    17.
    发明授权
    6-Amino-5.beta.,19-cycloandrostane derivatives 失效
    6-氨基-5 {62,19-环戊二烯衍生物

    公开(公告)号：US4028348A

    公开(公告)日：1977-06-07

    申请号：US658863

    申请日：1976-02-17

    申请人： Pal Bite ,  Imre Moravcsik ,  Inge Schafer ,  Gyula Horvath ,  Zsuzsanna Mehesfalvi nee Vajna ,  Janos Borvendeg ,  Ilona Hermann nee Szente

    发明人： Pal Bite ,  Imre Moravcsik ,  Inge Schafer ,  Gyula Horvath ,  Zsuzsanna Mehesfalvi nee Vajna ,  Janos Borvendeg ,  Ilona Hermann nee Szente

    IPC分类号： C07J53/00 ,  C07J41/00 ,  C07J43/00

    CPC分类号： C07J53/00

    摘要： Novel 6-amino-5.alpha.,19-cycloandrostane derivatives of formula I and their pharmaceutically acceptable addition salts ##STR1## wherein X denotes any of the groups of the formula =CH(OR), =CO or =C=N-OR.sub.1,Y denotes any of the groups of the formula =CO, =CH(OR.sub.1), =C=N-OR.sub.1, =C(OR.sub.1)-C.tbd.CH or ##STR2## wherein R denotes a hydrogen atom, a C.sub.1-4 alkyl group or a C.sub.2-5 acyl group, andR.sub.1 denotes a hydrogen atom, a straight-chained or branched C.sub.1-5 alkyl group, a straight-chained or branched C.sub.1-5 hydroxyalkyl group, a C.sub.3-8 cycloalkyl group, an allyl group, or a benzyl group, andR.sub.3 has the same meaning as R.sub.2 but if R.sub.2 is a sec. or tert. alkyl group or an alicyclic group, then R.sub.3 can only be a hydrogen atom; and if R.sub.2 is a benzyl group then R.sub.3 can only be a hydrogen atom or a primary alkyl group, furtherR.sub.2 and R.sub.3 may denote together with the adjcacent nitrogen atom a piperidine, a morpholine, or an N-methylpiperazine group. These compounds have exhibited an aldosterone-antagonistic effect on rats.

    摘要翻译： 式I的新型6-氨基-5α，19-环戊二烯衍生物及其药学上可接受的加成盐（I）其中X表示式= CH（OR），= CO或= C = N -OR1，Y表示式= CO，= CH（OR1），= C = N-OR1，= C（OR1）-C3ONDCH或者其中R表示氢原子，C1 -4-烷基或C 2-5酰基，R 1表示氢原子，直链或支链C 1-5烷基，直链或支链C 1-5羟基烷基，C 3-8环烷基， 烯丙基或苄基，R3与R2具有相同的含义，但如果R2为秒。 或叔。 烷基或脂环基，那么R 3只能是氢原子; 并且如果R 2是苄基，那么R 3只能是氢原子或伯烷基，R 2和R 3可以与相邻的氮原子一起表示哌啶，吗啉或N-甲基哌嗪基。 这些化合物对大鼠表现出醛固酮拮抗作用。

    Method and apparatus for sizing grains smaller than 300.mu.
    20.
    发明授权
    Method and apparatus for sizing grains smaller than 300.mu. 失效
    尺寸小于300亩的颗粒尺寸的方法和装置

    公开(公告)号：US4772255A

    公开(公告)日：1988-09-20

    申请号：US931336

    申请日：1986-11-14

    申请人： Zsolt Csillag ,  Laszlo Zsemberi ,  Geza Szentgyorgyi ,  Tibor Kalman ,  Karoly Solymar ,  Gyula Horvath ,  Pal Bognar ,  Gyula Ibranyi ,  Peter Jakos ,  Tibor Legat

    发明人： Zsolt Csillag ,  Laszlo Zsemberi ,  Geza Szentgyorgyi ,  Tibor Kalman ,  Karoly Solymar ,  Gyula Horvath ,  Pal Bognar ,  Gyula Ibranyi ,  Peter Jakos ,  Tibor Legat

    IPC分类号： B04B5/12 ,  B03B5/00 ,  B07B7/083 ,  B01D21/26 ,  B04B3/00

    CPC分类号： B07B7/083 ,  B03B5/00

    摘要： According to the process the grains are led to the surface or ducts of a rotary element farther in than the flange of the rotary element, thus the coarse grains are led to the flange of the rotary element in a counterflow to the sizing medium. In a housing on an impeller deflecting elements are arranged, the carrier medium and the mixture of material to be sized are fed into the housing by medium inlet tubes, and led out by coarse and fine fraction outlet tubes or nozzles, and one inlet disc is arranged above the impeller so that they form an annular assorting space which is divided by deflecting elements into segments, and a passage connected to the inlet tube of the sizing medium is formed between the mantle of the inlet disc and the inner wall of the housing at its upper end, where ducts leading into the assorting space are arranged in the inlet disc farther in than its flange, and which are connected to the carrier medium inlet tube.

    摘要翻译： 根据该过程，颗粒被引导到比旋转元件的凸缘更远的旋转元件的表面或管道，因此粗粒子以与调浆介质逆流的方式被引导到旋转元件的凸缘。 在叶轮上设置有偏转元件的壳体中，载体介质和尺寸混合物通过介质入口管进入壳体，并由粗和细分馏出口管或喷嘴引出，一个入口盘为 布置在叶轮上方，使得它们形成环形分类空间，该空间由偏转元件分成段，并且在入口盘的外壳和壳体的内壁之间形成连接到施胶介质的入口管的通道 其上端，其中导入分类空间的管道比入口盘比其法兰更远地布置，并且连接到载体介质入口管。