Roasted molybdenum and by products
May 14, 2018
Triple A Industries has signed an agreement with a manufacturer of three highly looked after molybdenum by products:
Roasted molybdenum:The most important usage is producing FeMo, Pure MoOx, and Molybdenum metal & Pure Molybdenum.
Ammonium heptamolybdate:is the inorganic compound whose chemical formula is (NH4)6Mo7O24, normally encountered as the Tetrahydrate. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate. It is mostly used:
- As an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in aqueous solution (e.g. pigments, river water, sea water etc.).
- In the production of molybdenum metal and ceramics.
- In the preparation of dehydrogenation and desulphurisation catalysts.
- In the fixing of metals.
- In electroplating.
- In fertilizers for crops.
- As a negative stain in biological electron microscopy, typically in the 3–5% (vol/vol) concentration range and in the presence of trehalose; or at saturated concentration to perform cryo-negative staining.
- For the detection of recreational drugs as a component of the frothed reagent.
Sodium molybdate:The agriculture industry uses 1 million pounds per year as a fertilizer. In particular, its use has been suggested for treatment of whiptail in broccoli and cauliflower in molybdenum-deficient soils. However, care must be taken because at a level of 0.3 ppm sodium molybdate can cause copper deficiencies in animals, particularly cattle.
It is used in industry for corrosion inhibition, as it is a non-oxidizing anodic inhibitor. The addition of sodium molybdate significantly reduces the nitrite requirement of fluids inhibited with nitrite-amine, and improves the corrosion protection of carboxylate salt fluids.
In industrial water treatment applications where galvanic corrosion is a potential due to bimetallic construction, the application of sodium molybdate is preferred over sodium nitrite. Sodium molybdate has the advantage in that the dosing of lower ppm's of molybdate allow for lower conductivity of the circulating water. Sodium molybdate at levels of 50-100 ppm offer the same levels of corrosion inhibition that sodium nitrite at levels of +800 ppm. By utilizing lower concentrations of sodium molybdate, conductivity is kept at a minimum and thus galvanic corrosion potentials are decreased.
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