United States—English [Change]
United States—English [Change]
The ability of molybdenum to withstand extreme temperatures without significantly expanding or softening makes it useful in applications that involve intense heat, including the manufacture of aircraft parts, electrical contacts, industrial motors and filaments.
Molybdenum is also used in steel alloys for its high corrosion resistance and weldability. Molybdenum contributes further corrosion resistance to “chrome-moly” type-300 stainless steels (high-chromium steels that are corrosion-resistant already due to their chromium content) and especially so in the so-called super austenitic stainless steels (such as alloy AL-6XN). Molybdenum acts by increasing lattice strain, thus increasing the energy required to dissolve out iron atoms from the surface.
Practice has proved that: at the right under the grinding fineness, the dissociation of molybdenite crystals occurs in S-Mo-S layer, the S-Mo surface hydrophilic small proportion. But after grinding time, S-Mo surface ratio of increase in the floatability of decline, although at this time adding a certain amount of polarity, such as xanthate collector class is beneficial to the recovery of molybdenite, but after grinding with the new sludge floatation effect. Therefore, the sorting of molybdenite to avoid and prevent excessive wear in the production and the need to adopt multi-stage grinding sub-sorting process, step by step to monomer dissociation, to ensure a high recovery of molybdenum concentrate.
Molybdenum ore beneficiation flotation method is mainly recovered in the molybdenum mineral is molybdenite. Sometimes in order to improve the quality of molybdenum concentrates, to remove impurities, to further chemical processing molybdenum concentrate outside the grounds. Molybdenite crystal structure of hexagonal layered or plate by Fan and health along the layer S-Mo-S structure and the layer of polar covalent bond formation of S-Mo. Layers and weak bonding between layers, and layer covalent bonding even stronger. Therefore, the structure of molybdenite layer solution can easily split along the flaky or tabular output, which is the natural floatability chalcocite good reason.
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