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molybdenum recovery
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  回收钼
    A new process for molybdenum recovery from spent catalysts has been studied,which includes the roasting with sodiun carbonate first and then the leaching with hot water.
    研究了从废催化剂中回收钼的新工艺,首先采用碳酸钠焙烧,再用热水浸取。
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    Study on Process of Molybdenum Recovery from Waste Hydrogenation Catalyst
    含钼加氢精制废催化剂中金属钼的回收工艺研究
短句来源
    By means of adding different acids in the pretreatment of acid and salt,the influence on the purity of ammonium molybdate and molybdenum recovery efficiency were analysed.
    分析了酸盐预处理加酸种类的改变对钼酸铵纯度及钼金属回收率的影响
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  molybdenum recovery
The feasibility of reductive precipitation of molybdenum oxides for molybdenum recovery from hypochlorite leach solutions has been investigated.
      
Molybdenum recovery above 99 pct at a chlorine utilization efficiency of 84 pct has been achieved for a fluidizing gas flow-rate of 3 L/min of the gases Cl2, O2, and N2 mixed in the proportion of 2∶5∶23, respectively, at 300 °C.
      
The feasibility of reductive precipitation of molybdenum oxides for molybdenum recovery from hypochlorite leach solutions has been investigated.
      
Neutron activation analysis was used to determine (1) the efficiency of molybdenum recovery and (2) the decontamination factor of numerous fission product elements from the molybdenum product.
      


By means of adding different acids in the pretreatment of acid and salt,the influence on the purity of ammonium molybdate and molybdenum recovery efficiency were analysed.

分析了酸盐预处理加酸种类的改变对钼酸铵纯度及钼金属回收率的影响

A new process for molybdenum recovery from spent catalysts has been studied,which includes the roasting with sodiun carbonate first and then the leaching with hot water.The effect of preparation conditions,such as particle size of the spent catalysts,roasting and leaching conditions on the leaching rate of molybdenum has been analyzed.The results of the test show that the optimum technological conditions for recovering molybdenum are the particle size of the spent catalysts 122 μm,roasting...

A new process for molybdenum recovery from spent catalysts has been studied,which includes the roasting with sodiun carbonate first and then the leaching with hot water.The effect of preparation conditions,such as particle size of the spent catalysts,roasting and leaching conditions on the leaching rate of molybdenum has been analyzed.The results of the test show that the optimum technological conditions for recovering molybdenum are the particle size of the spent catalysts 122 μm,roasting temperature 750 ℃,roasting time 2 h,leaching temperature 75 ℃,leaching time 4 h,the ratio of liquid and solid 6∶1.Under this operation condition,the recovering rate of molybdenum is over 93% and purity of sodium molybdate dihydrate over 95%.The new process has advantages of saving energy and high leaching rate of molybdenum,this process has potential practical prospects.

研究了从废催化剂中回收钼的新工艺,首先采用碳酸钠焙烧,再用热水浸取。分析了催化剂的颗粒度、焙烧条件、浸取条件对浸取率的影响。实验结果表明:回收钼的最佳工艺条件为,废催化剂颗粒度≤122μm、焙烧温度750℃、焙烧时间2 h、浸取温度75℃、浸取时间4 h、液固质量比6∶1。在此条件下,钼的浸取率达到93%以上,产品钼酸钠的纯度达95%以上。该工艺具有能耗低,浸出率高等优点,具有潜在的应用前景。

 
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