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首页> 外文期刊>Inorganic chemistry >Magnesium removal from an aluminum molten alloy using enriche mineral silica with amorphous nanoparticles of Sio2
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Magnesium removal from an aluminum molten alloy using enriche mineral silica with amorphous nanoparticles of Sio2

机译：使用富含矿物的二氧化硅和无定形的Sio2纳米颗粒从铝熔融合金中去除镁

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摘要

In order to improve the Mg removal from an A-380 molten alloy, mixtures of mineral silica and amorphous silica nanoparticles (SiO_(2(NP's)).J were tested. Mineral silica was enriched with 2.5, 5 and 10wt% of amorphous SiO_(2(NP's)) . Before Mg removing, samples of mineral silica were impregnated with SiO_(2(NP's)) by mixed for 30 min in ethanol and then dried at 110°C for 24 h. The enriched mineral silica with nanoparticles was analyzed by scanning electron microscopy and transmission electron microscopy. The Mg removal was carried out injecting each mixture into the molten aluminum alloy at 750°C using argon as a carrier gas. The Mg content of the molten alloy was measured after different periods of injection time (each 10 min). It was found that the mineral silica with 10wt% of SiO_(2(NP's)) is the most efficient mixture, removing Mg from an initial content of 1.6 to a final content of 0.4wt%, in 70 min of injection. Moreover, thermodynamic predictions were carried out in the FactSage software in order to establish chemical equations occurring in the system.
机译：为了提高A-380熔融合金中的Mg去除率，对矿物二氧化硅和无定形二氧化硅纳米粒子（SiO_（2（NP's））。J的混合物进行了测试，矿物二氧化硅富含2.5、5和10wt％的无定形SiO_。 （2（NP's）。）在去除镁之前，先将SiO_（2（NP's））浸渍在二氧化硅中，然后在乙醇中混合30分钟，然后在110°C下干燥24 h。用氩气作为载气，在750℃下，将各混合物注入熔融铝合金中，进行脱镁处理，并在不同的注入时间后测定熔融合金中的镁含量。 （每10分钟）发现具有SiO_（2（NP's））10wt％的矿物二氧化硅是最有效的混合物，在70分钟内将Mg从1.6的初始含量去除到0.4wt％的最终含量此外，在FactSag中进行了热力学预测为了建立在系统中发生的化学方程式的软件。

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