Yield Of Molybdenum Research Articles

A study on direct alloying with molybdenum oxides by feed wire method

Direct alloying with molybdenum oxides has been regarded in years; the main addition methods are adding to the bottom of electric arc furnace (EAF) with scrap, adding to the ladle during the converter tapping and mixing molybdenum oxide, lime and reductant to prepare pellet added to basic oxygen furnace (BOF). In this paper, a new method for direct alloying with molybdenum trioxide is proposed, adding molybdenum trioxide molten steel by feeding wire method in ladle furnace (LF) refining process. The feasibility of molybdenum oxide reduction, the influence rules of bottom-blown on liquid steel fluidity and the yield of molybdenum by feeding wire method were analyzed. Results show that molybdenum oxide can be reduced by [Al], [Si], [C], and even [Fe] in molten steel. Bottom blowing position has a significant influence on the flow of molten steel when the permeable brick is located in 1/2 radius. The yields of Mo are higher than 97% for the experiments with feed wire method, the implementation of direct alloying with molybdenum trioxide by feed wire method works even better than that uses of ferromolybdenum in the traditional process.

Recycling of molybdenum in iron-potassium catalysts for dehydrogenation of isoamylenes

Method is found and substantiated for recovery of molybdenum from a spent iron-potassium catalyst for dehydrogenation of isoamylenes to isoprene. The effect of various factors (nature and concentration of the extracting agent, temperature and duration of the extraction process, and ratio between the liquid and solid phases) on the selectivity of recovery and the yield of molybdenum was studied. It is shown that molybdenum can be recycled in manufacture of iron-potassium catalysts for dehydrogenation of isoamylenes to isoprene.

The Synthesis and Characterization of New-Style Anticorrosive Pigment Zinc Molybdate

Making use of the amphoteric characteristic of zinc oxide and the weak acidity of hydrolyzed ammonium heptamolybdate, we synthesized high-purity zinc molybdate through chemical reactions. At optimum reaction temperature of 70°C, 1 hour of reaction time and reuse of mother liquor, the molybdenum yield exceed 98%. This process has no wastewater discharge, and the products can be easily filtered. The productivity is significantly increased.

Influence of Molybdenum on Growth and Composition of Alfalfa and Distribution of Molybdenum in a Cecil‐Lloyd Soil

AbstractSodium molybdate was applied annually at a rate of 8 ounces per acre to alfalfa receiving 500 and 4000 pounds limestone. Beginning in the fall of the second year of growth, the low lime treatment plus molybdenum yield was about the same as the high lime treatment. After 3 years, alfalfa on the high lime treatment responded to molybdenum. Liming increased the molybdenum content of alfalfa in 1956 but did not consistently do so in 1959. The molybdenum content of alfalfa was not excessive after six applications. Molybdenum did not move downward in the Cecil‐Lloyd soil profile.