公开(公告)号：EP0978338A1

公开(公告)日：2000-02-09

申请号：EP99902917.6

申请日：1999-02-16

Applicant: Toho Titanium Co., Ltd.

Inventor： KAGOHASHI, Wataru ,  ASAI, Tsuyoshi ,  TAKATORI, Hideo

IPC: B22F9/28

CPC classification number: B22F9/28 ,  B22F2998/00 ,  B22F2999/00 ,  B22F1/0018 ,  B22F2201/013 ,  B22F2201/00

Abstract: Chlorine gas from a supply nozzle is mixed with the vapor of nickel chloride and the mixed gas is supplied from a supply nozzle into a hydrogen gas atmosphere in a reduction reactor at a reduction temperature of 900 to 1100°C. The volume of chlorine gas to be mixed versus the vapor of nickel chloride is adjusted to a ratio of 0.01 to 0.5 moles per mole of the vapor of nickel chloride. The particle size of the nickel powder can be controlled appropriately, and also, uniformity of particle size, smoothability of surfaces of particles, and sphericity can be improved.

Abstract translation: 来自供给喷嘴的氯气与氯化镍的蒸汽混合，混合气体从还原反应器中的供给喷嘴供给至氢气气氛中，还原温度为900〜1100℃。氯气体积为 与氯化镍的蒸汽相混合，调节成每摩尔氯化镍蒸汽为0.01至0.5摩尔的比例。 可以适当地控制镍粉末的粒径，并且可以提高粒径的均匀性，颗粒表面的光滑性和球形度。

公开(公告)号：EP1468766A1

公开(公告)日：2004-10-20

申请号：EP02733480.4

申请日：2002-06-11

Applicant: Toho Titanium Co., Ltd.

Inventor： YOSHIDA, Mitsugu, TOHO TITANIUM CO., LTD. ,  ASAI, Tsuyoshi ,  KAGOHASHI, Wataru

IPC: B22F9/28

CPC classification number: C22B23/06 ,  B22F9/28 ,  C22B1/08 ,  C22B5/12 ,  H01G4/0085 ,  Y10T29/49165

Abstract: Metal chloride vapor and reducing gas are brought into contact to form metallic powder, the metallic powder is washed in carbonic acid aqueous solution, and the metallic powder is classified in a liquid phase. In this way, metallic powder, such as nickel powder, in which the content of chloride components is extremely small and the coarse particle content is small, can be efficiently produced.

Abstract translation: 使金属氯化物蒸气和还原气体接触形成金属粉末，金属粉末在碳酸水溶液中洗涤，金属粉末分级为液相。 以这种方式，可以有效地制造其中氯化物组分的含量极小并且粗颗粒含量小的诸如镍粉的金属粉末。

公开(公告)号：EP1468766B1

公开(公告)日：2006-08-23

申请号：EP02733480.4

申请日：2002-06-11

Applicant: TOHO TITANIUM CO., LTD.

Inventor： YOSHIDA, Mitsugu, TOHO TITANIUM CO., LTD. ,  ASAI, Tsuyoshi ,  KAGOHASHI, Wataru

IPC: B22F9/28

CPC classification number: C22B23/06 ,  B22F9/28 ,  C22B1/08 ,  C22B5/12 ,  H01G4/0085 ,  Y10T29/49165

Abstract: A method for producing a metal powder, which comprises contacting a metal chloride gas with a reducing gas, to give a metal powder, and washing the metal powder with aqueous solution of carbonic acid, and preferably subjecting the washed powder to classification in water. The method allows the production of a metal power, such as a nickel powder, containing an extremely small amount of residual chlorine and having a small content of a coarse powder.

Abstract translation: 一种金属粉末的制造方法，其特征在于，使金属氯化物气体与还原性气体接触而得到金属粉末，用碳酸水溶液洗涤该金属粉末，优选将该洗涤后的粉末在水中分级。 该方法允许生产含有极少量残余氯并且具有少量粗粉的金属粉末，例如镍粉。

公开(公告)号：EP0978338B1

公开(公告)日：2005-08-03

申请号：EP99902917.6

申请日：1999-02-16

Applicant: Toho Titanium Co., Ltd.

Inventor： KAGOHASHI, Wataru ,  ASAI, Tsuyoshi ,  TAKATORI, Hideo

IPC: B22F9/28

CPC classification number: B22F9/28 ,  B22F2998/00 ,  B22F2999/00 ,  B22F1/0018 ,  B22F2201/013 ,  B22F2201/00

Abstract: Nickel chloride vapor is mixed with chlorine gas fed through a supply pipe (6) at a mole ratio of chlorine gas to nickel chloride vapor of between 0.01 : 1 and 0.5 : 1, and the gaseous mixture thus obtained is fed through a supply pipe (2) into the hydrogen gas atmosphere kept in a reducing furnace (1) at a reducing temperature (900 to 1100 °C), whereby powdered nickel which is appropriately controlled in the particle size and improved in the uniformity of particle size and the surface smoothness and sphericity of particles can be produced.