1) impure sodium tungestate solution
粗钨酸钠溶液
1.
from impure sodium tungestate solution are reviewed and several commonly used purification methods are reported with discussion of research trend.
对粗钨酸钠溶液中的几种常见而又典型的杂质，如砷、磷、硅、钼等的净化分离研究成果及几种常用的分离净化方法作了较详细的回顾，对本课题未来的研究方向进行了讨论。
2) sodium tungstate solution
钨酸钠溶液
1.
Study is made of the vanadium extraction from sodium tungstate solution leached out of the secondary tungsten resource.
研究了采用某型树脂从钨二次资源浸出的钨酸钠溶液分离富集钒的效果。
2.
The removal of molybdenum from crude sodium tungstate solution was investigated by cupric sulphate precipitation with the addition of appropriate quantity of sodium sulfide and under suitable conditions.
研究了用硫酸铜沉淀法除去粗钨酸钠溶液中钼的方法。
3) coarse sodium tungstate
粗钨酸钠
1.
The feasibility of eliminating educt alkali from coarse sodium tungstate with negative ion(1)selective membrane was studied.
研究一价阴离子选择膜从粗钨酸钠溶液中脱除游离碱的可行性,考察了操作电流密度、料液中游离碱浓度、回收碱浓度等工艺参数对过程能耗、电流效率及碱钨迁移速率比等工艺指标的影响。
4) solution of ammonium tungstate
钨酸铵溶液
1.
Comparing the products which were prepared by evaporation and by adding seed crystal and solution of ammonium tungstate at the time of evaporation, we found that the latter was ammonium paratungstate containing 5 molecular of crystal water which was more integrate, thicker and purer.
通过对比蒸发法与在蒸发法中添加晶种和钨酸铵溶液制备的仲钨酸铵产品,结果表明后者制备的晶形更完整、颗粒较粗,且是纯度更高的5水仲钨酸铵。
5) tungstate solution
钨酸盐溶液
1.
Commercial scale test of selective precipitation method for Mo removal from tungstate solution;
选择性沉淀法从钨酸盐溶液中除钼的工业试验
6) Salkowski's solution
磷钨酸溶液
补充资料：钨酸钠
钨酸钠化学式Na2WO4·2H2O，分子量329.86。无色或白色结晶粉末。在干燥空气中风化。易溶于水，水溶液呈弱碱性，不溶于醇。无水物熔点698℃。用做分析试剂、生物碱沉淀剂、织物的防水防火剂和制取金属钨及其化合物的原料。向20％NaOH溶液中加入过量的H2WO4，加热、过滤、蒸发、结晶制得本品。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条