Method for removing metals from a fluid stream
    2.
    发明授权
    Method for removing metals from a fluid stream 失效
    从流体流中除去金属的方法

    公开(公告)号:US5346627A

    公开(公告)日:1994-09-13

    申请号:US123805

    申请日:1993-09-20

    CPC classification number: C02F1/5272 C02F1/683 Y10S210/912 Y10S210/914

    Abstract: A method is provided for removing metals from a fluid stream containing these metals. The method involves treating the fluid stream with a water soluble ethylene dichloride ammonia polymer having a molecular weight of from 500 to 100,000 that contains at least 5 mole percent of dithiocarbamate salt groups to form a complex with the metals. Then, the fluid stream is passed through a filtering device to remove the complexes from the fluid stream.

    Abstract translation: 提供了从含有这些金属的流体流中除去金属的方法。 该方法包括用含有至少5摩尔%的二硫代氨基甲酸盐盐基团的分子量为500至100,000的水溶性二氯乙烷氨聚合物处理流体物流以与金属形成络合物。 然后,流体流通过过滤装置以从流体流中除去络合物。

    Process for de-oiling mill sludge
    6.
    发明授权
    Process for de-oiling mill sludge 失效
    脱泥机污泥处理工艺

    公开(公告)号:US5125966A

    公开(公告)日:1992-06-30

    申请号:US630846

    申请日:1990-12-20

    CPC classification number: C22B1/005 C21B3/04 Y02P10/216 Y02W30/542 Y10S75/962

    Abstract: A process for de-oiling mill sludge employs the steps of admixing mill sludge with water and surface active agent to form a mill sludge slurry which is subjected to high shear agitation to form an oily water emulsion. Then at least 40 weight percent of the solids present in the mill sludge treated is separated from the oily water emulsion.

    Abstract translation: 用于脱胶研磨泥浆的方法采用将研磨淤泥与水和表面活性剂混合的步骤,以形成经过高剪切搅拌形成油性水乳液的研磨泥浆浆料。 然后将存在于处理过的研磨渣中的至少40重量%的固体与油水乳液分离。

    Sulfide ion-selective electrodes for control of chemical feed of organic
sulfide products for metal ion precipitation from waste water
    8.
    发明授权
    Sulfide ion-selective electrodes for control of chemical feed of organic sulfide products for metal ion precipitation from waste water 失效
    用于控制有机硫化物产品从废水中金属离子沉淀的化学进料的硫化物离子选择性电极

    公开(公告)号:US5401420A

    公开(公告)日:1995-03-28

    申请号:US216372

    申请日:1994-03-23

    Abstract: A wastewater treatment system and method for chemical precipitation and removal of metals from wastewater in a continuous or batch treatment process includes an ion-selective sulfide electrode and a reference electrode disposed in a precipitation tank for measuring an electrochemical potential therebetween in a predetermined range. A controller unit is provided which is responsive to the electrochemical potential in the predetermined range and is connected to a precipitant feed unit for automatically controlling the chemical precipitant fed into the precipitation tank.

    Abstract translation: 在连续或间歇处理方法中,从废水中化学沉淀和去除金属的废水处理系统和方法包括设置在沉淀池中的离子选择性硫化物电极和参考电极,用于在预定范围内测量其间的电化学电势。 提供控制器单元,其响应于预定范围内的电化学势,并连接到沉淀剂进料单元,用于自动控制进入沉淀池的化学沉淀剂。

    Process for de-oiling mill scale
    10.
    发明授权
    Process for de-oiling mill scale 失效
    脱油工艺规模

    公开(公告)号:US5047083A

    公开(公告)日:1991-09-10

    申请号:US366703

    申请日:1989-06-15

    CPC classification number: B01D17/00 Y10S75/962

    Abstract: A process for de-oiling mill scale which comprises(a) collecting mill scale and analyzing for oil content; and then(b) slurrying the portion of mill scale containing more than 0.5 weight percent oil in water to achieve an aqueous mill scale slurry having at least 25 weight percent solids content; and then(c) high shear agitating the aqueous mill scale slurry to form a reduced oil mill scale suspension in an oily water emulsion; and then(d) phase separating the reduced oil mill scale from the oily water emulsion forming a reduced oil mill scale and an oily water emulsion; and then(e) fresh water rinsing the reduced oil mill scale to form an oil-free mill scale and a waste wash water; and then(f) recycling the waste wash water to form at least a portion of the aqueous mill scale slurry of step b; and then(g) repeating steps (a) through (f) until the oil-free mill scale contains less than 0.5 weight percent oil; and then(h) drying the oil-free mill scale for use to form sinter plant feed in the steel making process.

Patent Agency Ranking