Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Grinding slag treatment method
The invention belongs to the technical field of nuclear fuel manufacturing, and relates to a grinding slag treatment method. The method sequentially comprises the following steps that: grinding slag is put into a sintering furnace in a reducing atmosphere, and hardened uranium dioxide is formed after the grinding slag is sintered; the sintered grinding slag is oxidized to form powder U3O8; the U3O8 powder is screened through a rotary vibrating screen, and then particle homogenization treatment is conducted through a single-cone spiral mixer to obtain homogenized U3O8 powder; and the homogenized U3O8 powder is added into a UO2 powder raw material to prepare a pellet, the addition amount of the U3O8 powder does not exceed 20%. According to the method, the grinding slag generated in UO2 pellet manufacturing can be converted into the U3O8 powder with excellent physical performance and addition performance, the addition ratio of recycled materials is remarkably increased, and therefore, theefficiency of the treatment process and the utilization rate of the grinding slag are increased. By adopting the method to treat the grinding slag, 100% on-line recycling of the grinding slag can berealized, and meanwhile, the quality of the pellet is not influenced.
本发明属于核燃料制造技术领域，具体涉及一种磨削渣处理方法。该方法依次包括如下步骤：将磨削渣在还原性氛围下放入烧结炉，烧结后形成板结的二氧化铀；经过烧结后的磨削渣进行氧化，变成粉末状的U3O8；然后，将U3O8粉末通过旋振筛筛分处理，再通过单锥螺旋混料器进行颗料均匀化处理后得到均质的U3O8粉末；将均质的U3O8粉末添加到UO2粉末原料中制备芯块，U3O8粉末添加量不超过20％。有益效果在于：能够将UO2芯块制造中产生的磨削渣转化为一种物理性能和添加性能优越的U3O8粉末，显著提高回收物料的添加比，从而提高处理过程效率和磨削渣利用率。采用该方法处理磨削渣能够实现磨削渣100％的在线回收利用，同时芯块质量不受影响。
Grinding slag treatment method
The invention belongs to the technical field of nuclear fuel manufacturing, and relates to a grinding slag treatment method. The method sequentially comprises the following steps that: grinding slag is put into a sintering furnace in a reducing atmosphere, and hardened uranium dioxide is formed after the grinding slag is sintered; the sintered grinding slag is oxidized to form powder U3O8; the U3O8 powder is screened through a rotary vibrating screen, and then particle homogenization treatment is conducted through a single-cone spiral mixer to obtain homogenized U3O8 powder; and the homogenized U3O8 powder is added into a UO2 powder raw material to prepare a pellet, the addition amount of the U3O8 powder does not exceed 20%. According to the method, the grinding slag generated in UO2 pellet manufacturing can be converted into the U3O8 powder with excellent physical performance and addition performance, the addition ratio of recycled materials is remarkably increased, and therefore, theefficiency of the treatment process and the utilization rate of the grinding slag are increased. By adopting the method to treat the grinding slag, 100% on-line recycling of the grinding slag can berealized, and meanwhile, the quality of the pellet is not influenced.
本发明属于核燃料制造技术领域，具体涉及一种磨削渣处理方法。该方法依次包括如下步骤：将磨削渣在还原性氛围下放入烧结炉，烧结后形成板结的二氧化铀；经过烧结后的磨削渣进行氧化，变成粉末状的U3O8；然后，将U3O8粉末通过旋振筛筛分处理，再通过单锥螺旋混料器进行颗料均匀化处理后得到均质的U3O8粉末；将均质的U3O8粉末添加到UO2粉末原料中制备芯块，U3O8粉末添加量不超过20％。有益效果在于：能够将UO2芯块制造中产生的磨削渣转化为一种物理性能和添加性能优越的U3O8粉末，显著提高回收物料的添加比，从而提高处理过程效率和磨削渣利用率。采用该方法处理磨削渣能够实现磨削渣100％的在线回收利用，同时芯块质量不受影响。
Grinding slag treatment method
一种磨削渣处理方法
DAI JIANXIONG (Autor:in) / XIONG DEMING (Autor:in) / YANG YONGZHI (Autor:in) / TANG YINGCHUAN (Autor:in) / ZHONG DUOJUN (Autor:in) / OU JIANGWU (Autor:in)
09.02.2021
Patent
Elektronische Ressource
Chinesisch
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