Molybdenum News Center

Molybdenum timber must ensure that the carbon content of 0.002% or less. Melting of molybdenum, an electrode material color impurities causes a dramatic change in the glass. So for melting tank molybdenum molybdenum electrodes of at least 99.93%. Carbon is particularly important, the carbon content is too high, not only reduces the mechanical properties of the electrode, but also the formation of bubbles, if bubbles appear in the track mounted on the electrode material, the special risk. The content of O2 and N2 have the same effect. Impurity content does not exceed the values ​​in Table 2.2.4 of the metal molybdenum can be used for electrode material. 

 

In the production of which, when the current density is too high, the temperature of the electrode region up to 1500 ℃ ~ 1600 ℃, a large amount of bubbles in the molten glass. These bubbles float to the surface into a bright white flame burning. Decomposition products which may be of glass or carbon and molybdenum electrode furnace oxygen bonded CO combustion. 

 

Found that the use of molybdenum in the glass furnace electrodes made ​​of molybdenum or other member, if the carbon content of Mo exceeds 0.02% to 0.03% as a result of the reaction of carbon and oxygen in the vicinity of the electrode region produced a number of small bubbles, which is for many glass products allowed. If you increase the purity molybdenum, the carbon content down to 20 ~ 30PPM, these small bubbles can be removed. 

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