从理论上分析了碳酸稀土的变质行为。
The modifying action of rare earth carbonate is theoretically analyzed.
在不同的工艺条件下能生产出晶型型貌不同的少钕碳酸稀土。
Less neodymium rare earth carbonate with different crystalline feature can be produced.
射线衍射和电镜扫描分析表明碳酸稀土产品属晶型结构，为长方体和纺锤形状结晶。
The X ray diffraction and scanning electron microscope analyses show that the product possesses crystal structure, and the crystallized grain is rectangular and fusiform.
表明采用混合碳酸稀土作玻璃脱色剂可获得良好的脱色效果并使脱色成本降低50%。
It is shown that the mixed rare earth carbonate is superior to pure cerium oxide and reduces the cost of decoloring agent by 50%.
本文对钇基重稀土碳酸盐沉淀过程中杂质铁、铝离子的共沉淀行为以及对碳酸稀土的结晶性能和结晶效果的影响进行了研究。
The co precipitation behavior and the effects of impurity ions on the crystallization properties of yttrium base heavy rare earth carbonate were investigated.
碳酸盐结合态稀土含量随时间的延长而降低，但下降幅度较小；有机物结合态与残渣态稀土含量随时间的延长没有发现明显的变化。
At all time, content of carbonate binding species decreased with time lapsing, and content of residual species and content of organic binding species didn't change.
铌、稀土成矿作用与脉状、瘤状碳酸岩有关。
The niobium rare earth mineralization was concerned with tumour carbonatite.
这些表明不同稀土特征的萤石来自相同的源区，稀土成矿流体与碳酸岩和正长岩岩浆存在密切联系。
This suggests that the different REE fluorites were products of the same source, and REE ore-forming fluids were related to carbonatite and syenite magmas.
通过对白云岩和灰岩风化壳稀土赋存状态的对比，发现在碳酸盐岩红色风化壳中稀土具有相同的赋存和转化规律。
Through comparing the REE combining states between the dolomite and the limestone weathering profiles, we find that REE has the similar combing states and transformation characters.
研究用碳酸氢铵沉淀法分离稀土的各种条件和最优工艺的选择。
The conditions and the selection of the optimization process that rare earths are extracted by the ammonium hydrocarbonate precipitation are studied.
六方稀土氧化物在空气中极易水化和碳酸化。
The hexagonal rare earth sesquioxides are easy to be hydrated and carbonated in the air.
结果表明，振动光谱是表征稀土氟碳酸盐矿物结构和组分特征的有效手段。
The results show that the vibrational spectra are valuable for reflecting the structure and composition characteristic of the minerals.
在四川冕宁稀土矿床霓辉重晶伟晶岩和碳酸岩矿体的早期萤石、石英中发现了大量的流体-熔融包裹体。
A great quantity of fluid-melt inclusions was found in early-stage formed fluorite and quartz from aegirine-augite-barite pegmatite vein and carbonatite vein in Mianning REE deposit of Sichuan.
稀土矿石产于整个白云石碳酸岩体和部分脉状碳酸岩中。
The ore is embedded in all the dolomitic carbonatites and some vein carbonatites.
稀土矿石产于整个白云石碳酸岩体和部分脉状碳酸岩中。
The ore is embedded in all the dolomitic carbonatites and some vein carbonatites.
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