Molybdenum News Center

On the current industrial production of molybdenum, mainly using molybdenite concentrates for smelting, roasting oxidation, extraction of pure molybdenum trioxide, molybdenum metal powder reduction roasting three links. 

 

First, the reflection of molybdenum furnace, multiple hearth furnaces, fluidized bed furnace, or a flash furnace for roasting, made ​​after a desulfurization impure molybdenum trioxide (Mo ≥ 40% ~ 48%) of the calcine, using calcine metal thermal or thermal method to produce silicon molybdenum alloy. There are two calcine produced from pure molybdenum trioxide ways: First, sublimation, and second hydrometallurgical method. Solution with ammonia leaching, purification which remove impurities followed by crystallization or hydrochloric acid into ammonium paramolybdate law molybdenum (Mo ≥ 56%) or molybdate precipitation state, and then baked solution Serve pure molybdenum trioxide. Finally, pure molybdenum trioxide with hydrogen reduction method molybdenum metal powder (Mo ≥ 99.7% ~ 99.9%), then the powder metallurgy method or further into the legal system by arc melting ingots of molybdenum or molybdenum (Mo ≥ 99.8% ~ 99.95%) . 

 

At home and abroad for further studies of molybdenum smelting test some new technology and new methods, such as molybdenite concentrate roasting without the direct use of oxygen pressure cooking method or bacterial leaching method to extract pure molybdenum trioxide. Low-grade oxide ore leaching with sulfuric acid to extract pure molybdenum trioxide exchange or extraction from solution using ion. In addition, molybdenum smelting methods, as well as lime calcination, leaching nitrate, sodium hypochlorite leaching, electro-oxidation leaching method. 

 

Rhenium in molybdenum concentrate, molybdenum concentrate mainly from oxidative leaching solution or roasting smoke boiled liquid oxygen pressure recovery, and then using the extraction or ion exchange method from solution into a high potassium or ammonium perrhenate rhenium , and then restore the rule of law into high-purity rhenium powder. 

 

Molybdenum concentrate harmful impurities such as copper, lead, tin, arsenic, phosphorus, calcium, silica, etc., not only affects the quality of molybdenum products, but also affect the molybdenum smelting technology and equipment, and environmental pollution. Before smelting need to be strictly controlled, or be recycled in the smelting, making useful components, greatly improving industrial value molybdenum deposit. 

More molybdenum product: http://www.molybdenum.com.cn
Tel: 0592-5129696 Fax：0592-5129797
E-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Price: http://www.chinatungsten.com