中国钨业
中國鎢業
중국오업
CHINA TUNGSTEN INDUSTRY
2015年
3期
32-37
,共6页
MoO3%MoO2%Mo%粒度%K含量%还原工艺
MoO3%MoO2%Mo%粒度%K含量%還原工藝
MoO3%MoO2%Mo%립도%K함량%환원공예
MoO3%MoO2%Mo%particle size%K content%reduction technology
钼粉的费氏粒度和K含量是钼粉的两个重要物化指标。文章研究了在不同工艺条件下，不同粒度、不同K含量的MoO3原料对还原产品MoO2、Mo粉粒度及K含量之间的影响，采用平均粒度测定仪测定了MoO2、Mo粉粒度，采用偏振塞曼原子吸收分光光度计测定了K含量。结果表明，粒度较大的MoO3对应Mo粉的粒度也相对较大；纯MoO3原料中K含量越高，经相同工艺还原所得Mo粉的粒度越大；随着一段还原温度的升高，对应MoO2、Mo粉中K含量都呈现出先降低、后增长的规律；提高一段还原氢气露点，中间MoO2、Mo粉粒度、K含量都呈增长趋势；增加一段还原的料层厚度，对应MoO2、Mo粉中K含量呈降低趋势。
鉬粉的費氏粒度和K含量是鉬粉的兩箇重要物化指標。文章研究瞭在不同工藝條件下，不同粒度、不同K含量的MoO3原料對還原產品MoO2、Mo粉粒度及K含量之間的影響，採用平均粒度測定儀測定瞭MoO2、Mo粉粒度，採用偏振塞曼原子吸收分光光度計測定瞭K含量。結果錶明，粒度較大的MoO3對應Mo粉的粒度也相對較大；純MoO3原料中K含量越高，經相同工藝還原所得Mo粉的粒度越大；隨著一段還原溫度的升高，對應MoO2、Mo粉中K含量都呈現齣先降低、後增長的規律；提高一段還原氫氣露點，中間MoO2、Mo粉粒度、K含量都呈增長趨勢；增加一段還原的料層厚度，對應MoO2、Mo粉中K含量呈降低趨勢。
목분적비씨립도화K함량시목분적량개중요물화지표。문장연구료재불동공예조건하，불동립도、불동K함량적MoO3원료대환원산품MoO2、Mo분립도급K함량지간적영향，채용평균립도측정의측정료MoO2、Mo분립도，채용편진새만원자흡수분광광도계측정료K함량。결과표명，립도교대적MoO3대응Mo분적립도야상대교대；순MoO3원료중K함량월고，경상동공예환원소득Mo분적립도월대；수착일단환원온도적승고，대응MoO2、Mo분중K함량도정현출선강저、후증장적규률；제고일단환원경기로점，중간MoO2、Mo분립도、K함량도정증장추세；증가일단환원적료층후도，대응MoO2、Mo분중K함량정강저추세。
Freund particle size and K contents are two important physical and chemical properties of molybdenum powder. This paper studies the effect of MoO 3 materials of different K contents and particle sizes on the particle sizes and K contents of the post-reduction MoO2 and Mo powder. The particle sizes of MoO2 and Mo powders and K contents were measured respectively by average particle size analyzer and Hitachi polarized Zeeman atomic absorption spectrophotometer. The results showed that particle sizes of Mo powder are proportional to those of the corresponding MoO3. The higher K content in Pure MoO3 feedstock, the greater the particle size of Mo powder by the same reduction process. As the reduction temperature increases, the K contents of the corresponding MoO 2, Mo powders tend to grow after initial decreasing. MoO 2, Mo powder particle size and K contents increase with the increased reduction hydrogen dew points. The corresponding K contents in MoO 2, Mo powder decrease with the increased thickness of reduction materials.
