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Effect of different reagent regime on the kinetic model and recovery in gilsonite flotation

机译:不同试剂方式对硅灰石浮选动力学模型及回收率的影响

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Gilsonite is a natural fossil resource, similar to an oil asphalt high in asphaltenes. To determine the effect of reagent regime on the kinetic order and rate of flotation for a gilsonite sample, experiments were carried out in both rougher and cleaner flotation process. Experiments were conducted using different combinations of reagent: oil – MIBC; gasoline – pine oil; and one test without any collector and frother. According to results, kinetic in the test performed using the oil – MIBC and without any collector and frother were found to be first-order unlike the kinetic in the test conducted using the gasoline – pine oil. Five kinetic models were applied to the modeling of data from the flotation tests by using MATrix LABoratory software. The results show that all experiments are highly in compliance with all models. The kinetic constants (k) in rougher stage were calculated as 0.1548 (s?1), 0.2300 (s?1) and 0.2163 (s?1) for oil – MIBC, gasoline – pine oil, and test without any collector and frother, respectively. These amounts in the cleaner stage were 0.0450 (s?1), 0.1589 (s?1) and 0.0284 (s?1), respectively. The relationship betweenk, maximum combustible recovery (R∞) and particle size was also studied. The results showed that theR∞andkwere obtained with a coarse particle size of (?250+106) μm in the rougher and (?850+500) μm in cleaner flotation processes.
机译:Gilsonite是一种天然化石资源,类似于富含沥青质的石油沥青。为了确定试剂方案对硅灰石样品动力学顺序和浮选速率的影响,在粗浮选工艺中进行了实验。实验使用不同的试剂组合进行:油– MIBC;汽油–松油;一项没有任何收集器和起泡剂的测试。根据结果​​,发现与使用汽油-松油进行的测试中的动力学不同,在不使用任何集流体和起泡剂的情况下,使用MIBC润滑油进行的测试中的动力学是一级的。通过使用MATrix LABoratory软件,将五个动力学模型应用于浮选试验的数据建模。结果表明,所有实验都高度符合所有模型。计算得出粗油阶段的动力学常数(k)为0.1548(s?1),0.2300(s?1)和0.2163(s?1)(对于油-MIBC,汽油-松油),并且在没有任何收集器和起泡剂的情况下进行了测试,分别。在清洁阶段的这些量分别为0.0450(s?1),0.1589(s?1)和0.0284(s?1)。还研究了k,最大可燃物回收率(R∞)与粒径之间的关系。结果表明,在较粗的浮选过程中,R∞和k的粗粒度为(?250 + 106)μm,在较粗的浮选过程中为(?850 + 500)μm。

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