公开(公告)号：KR100503126B1

公开(公告)日：2005-07-22

申请号：KR1020020068354

申请日：2002-11-06

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  윤호신 ,  김창해 ,  정경열

IPC: B22F9/22

Abstract: 본 발명은 분산성이 우수한 구형의 니켈 미세분말의 제조방법에 관한 것으로서, 기상환원법을 이용하여 니켈 분말을 제조함에 있어서 기화 단계에서 염화니켈에 암모늄계 염소의 공급량을 제어하면서 증기상 또는 고체상으로 혼합함을 특징으로 하는 본 발명의 방법에 따라 제조된 니켈 미세분말은, 분산성이 우수하고 구형을 유지하며, 또한 직경을 원하는 범위, 예를 들면 0.03 내지 3.0㎛의 범위로 제어하기 용이하여, 다양한 전자부품 및 응용분야에서 그 기초 원료 분말로서 널리 활용될 수 있다.

公开(公告)号：KR1020040040043A

公开(公告)日：2004-05-12

申请号：KR1020020068354

申请日：2002-11-06

Applicant: 한국화학연구원

Inventor： 강윤찬 ,  윤호신 ,  김창해 ,  정경열

IPC: B22F9/22

Abstract: PURPOSE: A method for manufacturing spherical nickel metal powder is provided which simplifies controlling of size and shape of the powder by reducing the mixture after uniformly mixing vapor phase ammonium chloride with vapor phase nickel chloride in manufacturing of fine nickel metal powder using gas phase process. CONSTITUTION: The method for manufacturing spherical fine nickel metal powder having superior dispersibility comprises a first step of generating a mixed gas phase of ammonium chloride and nickel chloride; a second step of reducing the gas with hydrogen in the temperature range of 900 to 1,400 deg.C; a third step of obtaining fine nickel powder by cooling the reduced gas; and a fourth step of cleaning and drying the fine nickel metal powder after recovering the obtained fine nickel metal powder, wherein the vaporization process of generating a mixed gas phase of ammonium chloride and nickel chloride in the first step is selected from a process selected from a process of vaporizing the mixture after mixing solid phase nickel chloride with solid phase ammonium chloride, a process of mixing gases generated after respectively vaporizing the solid phase nickel chloride and the solid phase ammonium chloride, a process of vaporizing a mixture prepared by mixing nickel chloride with ammonium chloride in a pellet shape, and a process of vaporizing the mixture after mixing nickel metal with pellet shaped ammonium chloride, wherein the reduction process of the second step is performed by introducing nickel chloride gas and ammonium chloride gas into the inner tube in a reactor comprising a double pipe consisted of an inner tube and an outer tube and introducing hydrogen gas into a space between the outer tube and the inner tube, and wherein the cooling process of the third step is performed by rapidly cooling the reduced gas to an ordinary temperature using a cooling gas.

Abstract translation: 目的：提供一种制造球形镍金属粉末的方法，其通过使用气相法在制造细镍金属粉末中均匀混合气相氯化铵与气相氯化镍后，通过减少混合物来简化粉末的尺寸和形状的控制。 构成：具有优异分散性的球形细镍金属粉末的制造方法包括：生成氯化铵和氯化镍的混合气相的第一工序; 在900〜1400℃的温度范围内用氢气还原气体的第二步骤; 通过冷却还原气体获得细镍粉的第三步骤; 以及在回收所得到的细镍金属粉末之后，对细镍金属粉末进行清洗和干燥的第四步骤，其中在第一步骤中产生氯化铵和氯化镍的混合气相的汽化过程选自 将固相氯化镍与固相氯化铵混合后混合物的蒸发过程，将固相氯化镍和固相氯化铵分别蒸发后产生的气体混合的过程，将氯化镍与氯化镍混合制备的混合物蒸发的方法 以及在将镍金属与粒状氯化铵混合后将混合物蒸发的方法，其中第二步骤的还原过程是通过将氯化镍气体和氯化铵气体在反应器内部引入到内管中来进行的 包括由内管和外管组成的双管，并引入hy 将氢气进入外管和内管之间的空间，并且其中通过使用冷却气体将还原气体快速冷却至常温来进行第三步骤的冷却过程。