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首页> 外文期刊>World Journal of Nuclear Science and Technology >Application of a Mathematical Model to the Sierra Indiana Ore Leaching Process Containing Thorium, by Means of H&sub&2&/sub&SO&sub&4&/sub& Solution and HCl
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Application of a Mathematical Model to the Sierra Indiana Ore Leaching Process Containing Thorium, by Means of H&sub&2&/sub&SO&sub&4&/sub& Solution and HCl

机译：借助于H 2 / sub SO 4 / sub将数学模型应用于含Thor的塞拉印第安纳州矿石浸出过程。溶液和HCl

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The existence of the thorium element in the ores from the Atacama region, Chile, and its importance in the activities of the nuclear industry, have generated the interest of the Chilean Nuclear Energy Commission (CChEN) to study the technical feasibility of its recovery, like ThO_(2) through the implementation of hydrometallurgical techniques, such as leaching, solvent extraction, among others. The present work has become a report about the research carried out in the Extractive Metallurgy Area of the Department of Advanced Materials of CChEN, whose objective is to know the behavior of the thorium element when the mineral carrier is leached. The leaching tests were carried out in a glass reactor in batch mode, by mechanical agitation, varying different operational parameters, such as: type of leaching solution, concentration of acid in the solution, system temperature and granulometry of the mineral. The results indicate that there is technical feasibility for the recovery of thorium by leaching the mineral carrier with hydrochloric and/or sulfuric solution. The highest recovery of thorium for a sulfuric solution was 70.0% and for a hydrochloric solution of 83.8%, so the process presents a good efficiency in both cases. For a hydrochloric solution, the mathematical model of the thorium recovery efficiency obtained is: Y =31.14+26.25* X _(1)+8.69* X _(2) − 0.82* X _(3)+9.5* X _(12) − 0.83* X _(13) − 3.71* X _(23) − 1.83* X _(123)+6.45 The concentration of HCl and temperature, as well as their interaction, significantly affect the recovery of thorium for Sierra Indiana mineral, as well as temperature and granulometry. The previous model gives a good representativeness of 99.98%. For a sulfuric solution, the mathematical model of the thorium recovery efficiency obtained is: Y =29.78+25.92* X _(1)+0.99* X _(2)−1.05* X _(3)−2.05* X _(12) − 9.84* X _(13)−5.26* X _(23)−3.87* X _(123)+15.18 The model indicates that the recovery of thorium for the mineral is significantly affected by the concentration of sulfuric acid, and to a lesser degree by the temperature and granulometry. The model provides a representativeness of 98.3%.
机译：智利阿塔卡马地区矿石中es元素的存在及其在核工业活动中的重要性，引起了智利核能委员会（CChEN）的兴趣，研究其回收的技术可行性，例如ThO_（2）通过湿法冶金技术的实施，例如浸出，溶剂萃取等。目前的工作已成为在CChEN先进材料系的萃取冶金领域进行的研究的报告，其目的是了解矿物载体浸出时or元素的行为。浸出试验是在玻璃反应器中以机械搅拌的方式分批进行的，改变了不同的操作参数，例如：浸出溶液的类型，溶液中酸的浓度，系统温度和矿物的粒度。结果表明，通过用盐酸和/或硫酸溶液浸出矿物载体来回收or具有技术可行性。对于硫酸溶液，th的最高回收率为70.0％，对于盐酸溶液为83.8％，因此在两种情况下该工艺均具有良好的效率。对于盐酸溶液，获得的or回收效率的数学模型为：Y = 31.14 + 26.25 * X _（1）+ 8.69 * X _（2）＆min; 0.82 * X _（3）+ 9.5 * X _（12）＆减; 0.83 * X _（13）＆负; 3.71 * X _（23）＆负; 1.83 * X _（123）+6.45 HCl的浓度和温度，以及它们之间的相互作用，极大地影响了塞拉印第安纳州矿物的or的回收率以及温度和粒度。先前的模型具有99.98％的良好代表性。对于含硫溶液，获得的recovery回收效率的数学模型为：Y = 29.78 + 25.92 * X _（1）+ 0.99 * X _（2）减1.05 * X _（3）减2.05 * X _ （12）＆min ;; 9.84 * X _（13）＆; 5.26 * X _（23）＆; 3.87 * X _（123）+15.18该模型表明，矿物中concentration的回收率受硫酸浓度的显着影响，而温度和粒度的影响较小。该模型的代表性为98.3％。

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