| 引用本文: | 郭秋松,郭学益,田庆华.溶液雾化焙烧法制备氧化亚镍超细粉体[J].材料科学与工艺,2011,19(2):47-51.DOI:10.11951/j.issn.1005-0299.20110211. |
| GUO Qiu-song,GUO Xue-yi,TIAN Qing-hua.Preparation of ultrafine NiO powder by solution spray roasting method[J].Materials Science and Technology,2011,19(2):47-51.DOI:10.11951/j.issn.1005-0299.20110211. |
|
| 摘要: |
| 为研究雾化焙烧法制备氧化亚镍超细粉体过程原理与工艺控制,以六水合氯化镍配制水溶液,以压缩空气为载气,利用双通道内混合气流式喷嘴雾化前驱体溶液,获得微细雾滴直接在竖立管式高温电阻炉内焙烧,制备得到超细氧化亚镍粉体.采用热重-差热分析(TGA-DTA)对NiCl2.6H2O在空气气氛中的热行为进行研究,利用X射线衍射分析(XRD)、傅里叶红外光谱分析(FT-IR)、扫描电镜(SEM)和X射线光电子能谱(EDAX)等技术对制备的样品进行物相、纯度及形貌表征.研究表明:通过控制750℃以上的反应温度条件,氯化镍溶液直接雾化焙烧可以成功制备高纯度的氧化亚镍粉体,样品粒子呈类球形,粒度均一性好,结晶度高;不同的载气条件均制备得到单一相氧化亚镍粉体;与传统的煅烧碳酸镍高温分解制备工艺相比,雾化焙烧法具有工艺简单,过程可控,无温室气体排放等优点. |
| 关键词: 雾化焙烧法 氧化亚镍 超细粉体 |
| DOI：10.11951/j.issn.1005-0299.20110211 |
| 分类号:TF123.1 |
| 基金项目:湖南有色集团-中南大学有色研究基金资助项目(Y2008-01-003);湖南省科技厅科技计划重点项目基金资助(2009GK2010) |
|
| Preparation of ultrafine NiO powder by solution spray roasting method |
|
GUO Qiu-song1,2, GUO Xue-yi1, TIAN Qing-hua1
|
|
1.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China;2.The Research Institute of Rare Metals,Guangzhou Research Institute of Non-ferrous Metals,Guangzhou 510650,China
|
| Abstract: |
| To study the fundamental and technology of preparation process of ultrafine NiO powder by spray roasting method,the feed solution of NiCl2·6H2O was sprayed by using an two-channel inner mixed air-blast nozzle and subsequently roasted in an erective tubular resistance furnace with compressed air as carrier gas,then the ultrafine NiO powder was obtained.The results show that pure NiO powder are prepared successfully using direct spray roasting method at 750 ℃,and the powder appears a spheres-like morphologies,and has good uniformity size and high crystallinity.Different carrier gas does not affect the product breed.Comparing with traditional calcining pyrolysis route of nickel carbonate,the solution spray roasting method is a simple environmentally friendly process-controllable technique without greenhouse gas emissions. |
| Key words: spray roasting method NiO ultrafine powder |
