公开(公告)号：EP0574113B1

公开(公告)日：1997-05-21

申请号：EP93302202.2

申请日：1993-03-23

申请人： HITACHI CHEMICAL COMPANY, LTD. ,  HITACHI CHEMICAL TECHNO-PLANT CORPORATION, LTD. ,  CHEMIRITE, LTD.

发明人： Uchida, Tatsuya ,  Suemitsu, Toshio ,  Hiratsuka, Tsugihiko ,  Sakai, Kango

IPC分类号： C01G3/02

CPC分类号： C01G3/02 ,  C01B7/035 ,  C23F1/46

公开(公告)号：EP0366834B1

公开(公告)日：1995-03-01

申请号：EP88121026.4

申请日：1988-12-15

申请人： TDK Corporation ,  Chemirite, Ltd.

发明人： Hirai, Naoe c/o Chemirite Ltd. ,  Murase, Tohoru c/o Chemirite Ltd. ,  Okutani, Katsunobu c/o TDK Corporation ,  Mori, Teruo c/o TDK Corporation

IPC分类号： C01G49/06

CPC分类号： C22B3/10 ,  C01G49/0072 ,  C01G49/06 ,  C01P2006/42 ,  C01P2006/80 ,  C04B35/26 ,  C22B3/44 ,  C22B47/00 ,  Y02P10/234 ,  Y10S423/01

公开(公告)号：EP0364904B1

公开(公告)日：1994-01-05

申请号：EP89119089.4

申请日：1989-10-13

申请人： CHEMIRITE, LTD. ,  TDK Corporation

发明人： Hirai, Naoe ,  Murase, Tohoru ,  Mori, Teruo ,  Okutani, Katsunobu

IPC分类号： C01G49/00 ,  C22B47/00

CPC分类号： C22B3/10 ,  C01G49/0072 ,  C01G49/06 ,  C01P2006/42 ,  C01P2006/80 ,  C04B35/26 ,  C22B3/44 ,  C22B47/00 ,  Y02P10/234 ,  Y10S423/01

公开(公告)号：EP0574113A1

公开(公告)日：1993-12-15

申请号：EP93302202.2

申请日：1993-03-23

申请人： HITACHI CHEMICAL COMPANY, LTD. ,  HITACHI CHEMICAL TECHNO-PLANT CORPORATION, LTD. ,  CHEMIRITE, LTD.

发明人： Uchida, Tatsuya ,  Suemitsu, Toshio ,  Hiratsuka, Tsugihiko ,  Sakai, Kango

IPC分类号： C01G3/02

CPC分类号： C01G3/02 ,  C01B7/035 ,  C23F1/46

摘要： A copper chloride etching waste liquor is treated by a process comprising exposing the etching waste liquor to an atmosphere of 400 to 1,200 °C to generate cupric oxide and hydrogen chloride, separating and collecting the cupric oxide, dissolving the hydrogen chloride into water, and collecting the resulting hydrochloric acid, and an apparatus suitable for the process comprises a concentrating tower for concentrating the etching waste liquor, a roasting furnace for exposing the concentrate to a high-temperature atmosphere to generate a cupric oxide and a gas mixture containing hydrogen chloride, a cyclone, cooling tower and electrostatic precipitator for collecting the cupric oxide and for feeding the remaining gas mixture to the concentrating tower, a hydrochloric acid collecting tower for collecting hydrochloric acid from a gas mixture discharged from the concentrating tower, and a gas cleaning tower for neutralizing the exhaust gas discharged from the hydrochloric acid collecting tower.

摘要翻译： 氯化铜蚀刻废液通过包括将蚀刻废液暴露于400-1200℃的气氛中以产生氧化铜和氯化氢，分离和收集氧化铜，将氯化氢溶解在水中的方法处理，并收集 所得到的盐酸和适用于该方法的装置包括用于浓缩蚀刻废液的浓缩塔，用于将浓缩物暴露于高温气氛以产生氧化铜和含有氯化氢的气体混合物的焙烧炉， 旋风分离器，冷却塔和静电除尘器，用于收集氧化铜并将剩余的气体混合物供给浓缩塔，用于从从浓缩塔排出的气体混合物中收集盐酸的盐酸收集塔和用于中和的气体清洗塔 废气从盐酸中排出 塔。

公开(公告)号：EP0364904A3

公开(公告)日：1990-06-20

申请号：EP89119089.4

申请日：1989-10-13

申请人： CHEMIRITE, LTD. ,  TDK Corporation

发明人： Hirai, Naoe ,  Murase, Tohoru ,  Mori, Teruo ,  Okutani, Katsunobu

IPC分类号： C01G49/00 ,  C22B47/00

CPC分类号： C22B3/10 ,  C01G49/0072 ,  C01G49/06 ,  C01P2006/42 ,  C01P2006/80 ,  C04B35/26 ,  C22B3/44 ,  C22B47/00 ,  Y02P10/234 ,  Y10S423/01

摘要： A solution containing iron chloride and manganese chloride, whose phosphorus content is not higher than 0.007 wt.% with respect to the total content of iron and manganese. A method for producing the said solution comprises the steps of dissolving manganese containing raw material in hydrochloric solution; oxidizing the solution; adjusting the pH of the solution to 2.5 ∼ 4.5; separating the insolubles from the solution. This solution can be utilized to produce a mixed powder of an iron oxide and a manganese oxide. And the mixed powder is useful for producing a high-quality soft ferrite.

公开(公告)号：EP0366834A2

公开(公告)日：1990-05-09

申请号：EP88121026.4

申请日：1988-12-15

申请人： TDK Corporation ,  Chemirite, Ltd.

发明人： Hirai, Naoe c/o Chemirite Ltd. ,  Murase, Tohoru c/o Chemirite Ltd. ,  Okutani, Katsunobu c/o TDK Corporation ,  Mori, Teruo c/o TDK Corporation

IPC分类号： C01G49/06

CPC分类号： C22B3/10 ,  C01G49/0072 ,  C01G49/06 ,  C01P2006/42 ,  C01P2006/80 ,  C04B35/26 ,  C22B3/44 ,  C22B47/00 ,  Y02P10/234 ,  Y10S423/01

摘要： In a method for producing powdered iron oxide by oxidizing roasting an iron chloride solution, the pH-value of the crude iron chloride solution is adjusted to 2,5 to 4,5, the solution is subjected to a mechanical treatment in order to obtain a solution whose pH-value is not less than 1,5 and which contains insoluble Fe³⁺compounds in an amount of 0,01 to 0,1 % by weight, being calculated as Fe. The insolubles are separated from the solution and the resulting filtrate or purified solution is then roasted and oxidized in order to produce powdered iron oxide having a P content of not more than 0,005 % by weight.

摘要翻译： 在通过氧化焙烧氯化铁溶液制备粉状氧化铁的方法中，将氯化铁粗溶液的pH值调节至2.5至4.5，对该溶液进行机械处理以获得 pH值不小于1.5的溶液，其含有0.01〜0.1重量％的不溶性Fe 3+化合物，以Fe计算。 将不溶物与溶液分离，然后将所得滤液或纯化溶液焙烧和氧化，以制备P含量不超过0.005重量％的粉末状氧化铁。

公开(公告)号：EP0141034A2

公开(公告)日：1985-05-15

申请号：EP84107864.5

申请日：1984-07-05

申请人： Chemirite, Ltd.

发明人： Furusho, Genji

IPC分类号： C23G1/36 ,  B01J20/00

CPC分类号： C01G49/02 ,  C01P2006/80 ,  C02F1/28 ,  C02F1/281 ,  C02F1/285 ,  C02F1/60 ,  C23G1/36

摘要： The present invention relates to a method for removing a silicic compound from the waste liquor of steel pickling. A filtering method using a filter fabric or biscuit plate is impractical as an industrial method because the filtering medium becomes clogged.
The present invention is characterized by an adsorption method in which silicic compounds are adsorbed on adsorbent substrates (3) in an optional part of an adsorption bed.
The present invention is characterized in that the waste liquor is passed through the adsorption bed for a two-month period or longer without clogging occurring.