The present invention discloses a preparation of high purity ultrafine metal molybdenum powder method, the process steps are: (1) Preparation of molybdenite ore into a ball or block; drying of pellets; then dried pellets into the high-temperature vacuum furnace vacuum breakdown, access to non-ferrous metal impurities and low S content of molybdenum powder; (2) the above steps to obtain the spherical molybdenum powder into the roasting device, for roasting, get high-temperature gas MoO3; (3) high temperature gas into the gas MoO3 reduction device, using hydrogen as a reducing agent, reduction of gaseous MoO3, get high purity ultrafine metal molybdenum powder. Of the present invention without SO2 emissions and recycling issues, and while taking advantage of two resources of molybdenum and sulfur, molybdenum roasting to avoid the release of SO2 by the burden of comprehensive treatment and related emissions, not only reduces emissions but also improves the overall efficiency of resources.
Liquid - isang matatag na timpla, ang lanthanum oksaid sa La (NO3) 3 solusyon sa anyo ng mga alak - doped molibdenum pulbos sa isang halaga ng tungkol sa 1 % ng molibdenum pulbos sa isang kapaligiran ng pretreatment hydrogen sa 700 ~ 900 ℃ 2 h, atbp pagkatapos isostatic pagpindot, sintering sa mataas na temperatura molibdenum lanthanum manilay-nilay kamag-anak density ng 92 % hanggang 96 % ng haluang metal ingot .