1) defluorination
脱氟
1.
Study on condition of defluorination in wet-process phosphoric acid production with precipitation method;
湿法磷酸化学沉淀法脱氟的研究
2.
Progress of Chemical Disposal Defluorination of Wet-Process Phosphoric Acid;
湿法磷酸化学法脱氟的研究进展
3.
Research on Single-step Defluorination in Wet-process Phosphoric Acid Production with Adsorption Precipitation Method;
湿法磷酸生产中吸附沉淀法一步脱氟净化的研究
2) defluorinate
[,di'fluərineit]
脱氟
1.
The quality of edible calcium hydrophosphate produced from the defluorinated water of calcium can meet with the National Standard GB 1889-92.
利用脱氟后的“钙水”生产食用级磷酸氢钙，质量符合ＧＢ１８８９—９２。
2.
In this thesis, the composition of phosphate rock、 the kind of defluorinate agent、the conditions of neutralization were studied in the industrial device of feed grade dicalcium phosphate in HongHe Chemical Ltd.
通过实验深入细致地研究了磷矿的组份变化、脱氟剂的选择、脱氟pH值、脱氟温度及脱氟时间等指标对脱氟液中磷氟比的影响，并对这些指标进行了优化。
3) defluoridation
脱氟
1.
Defluoridation New Technology of Water Using Lanthanide-modified Chitosan
基于镧系金属改性壳聚糖的脱氟新技术研究
4) fluorodenitration
氟代脱硝
1.
Phase transfer catalysis for the fluorodenitration of m-dinitrobenzene with spray-dried KF(SD-KF) in the presence of phthaloyl chloride(PDC) was reported.
对以间二硝基苯为反应底物,喷雾干燥的氟化钾(简写为SD-KF)为氟化剂,一步合成间硝基氟苯的氟代脱硝反应,考察了催化剂、反应时间、溶剂等因素对反应的影响。
2.
Tetramethylammonium fluoride (TMAF) could be used as fluorodenitration reagent in synthesis of aromatic fluorine compounds from nitroaromatics.
四甲基氟化铵作为芳香族硝基化合物氟代脱硝试剂 ,用于合成含氟芳香族化合物 ,具有反应条件温和 ,产物收率高 ,副反应少的优
3.
Tetramethylammonium fluoride(TMAF) could be used as fluorodenitration reagent in the synthesis of aromatic fluorine compounds from nitroaromatics.
四甲基氟化铵作为芳香族硝基化合物氟代脱硝试剂 ,用于合成含氟芳香族化合物 ,有反应条件温和 ,产物收率高 ,副反应少的优
5) defluorination agent
脱氟剂
1.
A stepwise carbochlorination-oxidation process was developed for the rare earth extraction from mixed bastnaesitemonazite concentrate using carbon as reductant, chlorine gas as chlorination agent, SiCl4 gas as defluorination agent, and O2+H2O mixed gas as oxidant.
在脱氟剂SiCl4作用下,随着反应温度由500℃增至800℃,氟碳铈-独居石混合精矿稀土氯化率由92%增至99%,而无SiCl4时同样温度范围内,稀土氯化率为56%～88%,500℃氯化反应2h时主要产物为稀土氯化物、氯化钙;当氯化反应温度小于500℃时,与原料比钍的氯化产物挥发量小于1。
2.
A carbochlorination process of bastnaesite concentrate was investigated by using activated carbon powder as reductant,Cl_2 as chlorination agent and SiCl_4 as defluorination agent.
以活性炭为还原剂、Cl_2为氯化剂、SiCl_4为脱氟剂,研究氟碳铈矿的碳热氯化反应动力学。
3.
Carbochlorination reaction mechanism was investigated for extraction of rare earths from mixed bastnaesite-monazite concentrate with AlCl3 as defluorination agent.
研究了氟碳铈矿-独居石混合精矿经AlCl3脱氟和加碳氯化反应提取稀土的工艺及反应机理,考察了反应时间、温度和脱氟剂对稀土提取率的影响。
6) defluoridation effect
脱氟效果
1.
This paper studies material preparation,ion exchange model,acid wash and Fe exchange quantity effect for defluoridation material saturation absorbent quantity of model 732 changed property resin defluoridation;also concomitant ion influence on defluoridation effect of Fe(Ⅲ)-R and defluoridation mechanism of defluoridation material is explored.
结果表明,采用酸洗和动态交换方式可显著提高该脱氟剂的脱氟效果;共存离子和再生对该脱氟剂的脱氟效果无明显影响,树脂的最佳载铁量为69。
补充资料：脱氟磷酸三钙(defluorinated tricalcium phosphate)
分子式：Ca3(PO4)2
CAS号：
性质：又称脱氟磷酸三钙(defluorinated tricalcium phosphate)。白色无定形粉末。密度3.14g/cm3。熔点1670℃。溶于稀盐酸和硝酸。微溶于冷水,不溶于乙醇。将磷矿石、白云石、硅石等粉碎成80目细粉,按配比送入旋风炉中在1350～1500℃下,通过水蒸气流进行熔融脱氟,经水骤冷熔融体,干燥和磨细而制得。亦可用磷矿粉配以磷酸、少量硅石和纯碱、芒硝,经混合和造粒后送入回转炉(或沸腾炉)于1200℃以上进行烧结,烧成品经冷却、粉碎而制得。产品含P2O5 >40％、含氟<0.2％。主要用作家畜的磷和钙添加剂。也可用于酸性土壤作基肥。
CAS号：
性质：又称脱氟磷酸三钙(defluorinated tricalcium phosphate)。白色无定形粉末。密度3.14g/cm3。熔点1670℃。溶于稀盐酸和硝酸。微溶于冷水,不溶于乙醇。将磷矿石、白云石、硅石等粉碎成80目细粉,按配比送入旋风炉中在1350～1500℃下,通过水蒸气流进行熔融脱氟,经水骤冷熔融体,干燥和磨细而制得。亦可用磷矿粉配以磷酸、少量硅石和纯碱、芒硝,经混合和造粒后送入回转炉(或沸腾炉)于1200℃以上进行烧结,烧成品经冷却、粉碎而制得。产品含P2O5 >40％、含氟<0.2％。主要用作家畜的磷和钙添加剂。也可用于酸性土壤作基肥。
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