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In order to enhance the quality of uranium dioxide products, a comparison and analysis was conducted on the bulk density of uranium dioxide products in both the new and old uranium purification production lines. It was observed that the bulk density of products in the old production line exceeded that of products in the new line. The primary factor contributing to this difference was identified as significant fluctuations in crystallizing agent concentration of the new production line, resulting in inadequate crystallization effects for uranyl ammonium tricarbonate and smaller crystal sizes, consequently impacting crystal calcination effectiveness. As a result, there was a decrease in uranium dioxide product density and overall product quality. To address this issue, several measures were implemented,such as merging ammonium carbonate preparation positions between the new and old production lines, unifying and localizing crystallizing agent supply, enriching recovered ammonium carbonate solution, and flushing pipeline with steam flushing. These actions successfully resolved fluctuation problems related to crystallization effects within the new production line, leading to an average increase of 5.71% in bulk density of uranium dioxide products as well as an average net weight per barrel increase by 4.73%. Consequently, notable improvements were achieved regarding product quality for uranium dioxide.
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为提升二氧化铀产品品质,分析了铀纯化新老生产线二氧化铀产品的堆密度,发现铀纯化老生产线产品堆密度均高于新生产线产品的堆密度。分析其主要原因是新生产线结晶剂浓度波动较大,导致三碳酸铀酰铵的结晶效果变差,晶体粒径变小,进而影响了晶体煅烧效果和二氧化铀产品堆密度。通过将新老生产线碳酸铵配制岗位合并,统一、就近供应结晶剂,对回收的碳酸铵溶液进行增浓,并用蒸汽冲洗输送管道,解决了新生产线结晶效果波动问题,使新生产线二氧化铀产品平均堆密度提升了5.71%,平均每桶产品净重提升了4.73%,并提升了二氧化铀的产品品质。
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龚道坤(1985—),男,湖南常德人,学士,高级工程师,主要从事天然铀纯化转化科研和管理工作。
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冯博能(1999—),男,湖南湘潭人,学士,助理工程师,主要从事铀纯化工艺生产和管理。
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32(S2):92-96., articleTitle=水力旋流器控制方法研究及应用, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1195809057379496656, tenantId=1146029695717560320, journalId=1146123346816638986, articleId=1147999671265521970, xref=null, ext=[AuthorCompanyExt(id=1195809057387885265, tenantId=1146029695717560320, journalId=1146123346816638986, articleId=1147999671265521970, companyId=1195809057379496656, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=No. 272 Uranium Co., Ltd., CNNC, Hengyang 421004, China), AuthorCompanyExt(id=1195809057400468178, tenantId=1146029695717560320, journalId=1146123346816638986, articleId=1147999671265521970, companyId=1195809057379496656, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中核二七二铀业有限责任公司,湖南 衡阳 421004)])], figs=[ArticleFig(id=1195809059908661996, tenantId=1146029695717560320, journalId=1146123346816638986, articleId=1147999671265521970, language=EN, label=Table 1, caption=
Bulk density of new and old production lines of uranium purification from January to June 2022
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| 日期 | 平均堆密度/(g/cm3) |
| 新线 | 老线 | 差值 |
| 1月 | 2.05 | 2.20 | -0.15 |
| 2月 | 2.09 | 2.23 | -0.14 |
| 3月 | — | — | — |
| 4月 | 2.14 | 2.22 | -0.08 |
| 5月 | 2.11 | 2.26 | -0.15 |
| 6月 | 2.13 | 2.25 | -0.11 |
| 平均 | 2.10 | 2.25 | -0.15 |
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2022年1—6月铀纯化新老生产线产品堆密度
, figureFileSmall=null, figureFileBig=null, tableContent=
| 日期 | 平均堆密度/(g/cm3) |
| 新线 | 老线 | 差值 |
| 1月 | 2.05 | 2.20 | -0.15 |
| 2月 | 2.09 | 2.23 | -0.14 |
| 3月 | — | — | — |
| 4月 | 2.14 | 2.22 | -0.08 |
| 5月 | 2.11 | 2.26 | -0.15 |
| 6月 | 2.13 | 2.25 | -0.11 |
| 平均 | 2.10 | 2.25 | -0.15 |
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Bulk density of uranium dioxide products of the new line in 2022
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| 日期 | 平均堆密度/(g/cm3) |
| 7月 | 2.20 |
| 8月 | 2.24 |
| 9月 | 2.20 |
| 10月 | 2.21 |
| 11月 | 2.23 |
| 12月 | 2.21 |
| 7—12月平均 | 2.22 |
| 1—6月平均 | 2.10 |
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2022年新线二氧化铀产品堆密度情况
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| 日期 | 平均堆密度/(g/cm3) |
| 7月 | 2.20 |
| 8月 | 2.24 |
| 9月 | 2.20 |
| 10月 | 2.21 |
| 11月 | 2.23 |
| 12月 | 2.21 |
| 7—12月平均 | 2.22 |
| 1—6月平均 | 2.10 |
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