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首页> 外文会议>Tungsten, refractory amp; hardmaterials VIII >Effect of processing conditions on the first stage reduction of Ammonium Di Molybdate and Molybdenum trioxide
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Effect of processing conditions on the first stage reduction of Ammonium Di Molybdate and Molybdenum trioxide

机译：加工条件对二钼酸铵和三氧化钼第一阶段还原的影响

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摘要

Molybdenum powder is manufactured in a two step process starting from either Ammonium Di Molybdate (NH_4)2Mo_2O_7 or molybdenum trioxide (MoO_3). In the first step, usually carried out in rotary calciners, (NH_4)2Mo2O_7 or MoO_3 is reduced to MoO_2. A subsequent processing step further reduces the MoO_2 to form Mo metal powder. The present study investigates the effect of key processing parameters (starting raw material, heating rate and reduction temperature) on the properties of the reduced powder from the first stage reduction process. A design of experiment approach was used to understand the effect of the processing parameters. The bulk density and surface area of the reduced powders were found to depend on the type of starting raw material and reduction temperatures. The heating rate was found to have no effect on the properties of the reduced powder.
机译：从二钼酸铵（NH_4）2Mo_2O_7或三氧化钼（MoO_3）开始，以两步工艺制造钼粉。在第一步中，通常在旋转煅烧炉中进行，将（NH_4）2Mo2O_7或MoO_3还原为MoO_2。随后的处理步骤进一步还原了MoO_2以形成Mo金属粉末。本研究调查了关键工艺参数（起始原料，加热速率和还原温度）对第一步还原过程中还原粉末性能的影响。设计了一种实验方法来了解加工参数的影响。发现还原粉末的堆积密度和表面积取决于起始原料的类型和还原温度。发现加热速率对还原粉末的性能没有影响。

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