本文選題：共沉淀　切入點(diǎn)：含氟鈰基拋光粉　出處：《稀土》2016年03期 　論文類型：期刊論文

【摘要】：以氯化鑭鈰為原料,碳酸氫銨為沉淀劑,氟化銨為氟化劑,采用共沉淀法制備稀土拋光粉前驅(qū)體,前驅(qū)體經(jīng)過(guò)高溫焙燒可以得到含氟鈰基拋光粉。通過(guò)改變沉淀方式、陳化溫度、添加氟的量等因素對(duì)鈰基拋光粉的性質(zhì)進(jìn)行了研究。實(shí)驗(yàn)結(jié)果表明,采用共沉淀法,反應(yīng)溫度為室溫,反應(yīng)時(shí)間為50 min,陳化溫度80℃,陳化時(shí)間1h,摻氟量為5%時(shí)得到含氟鈰基拋光粉顆粒粒度最小,D50粒徑(二次粒徑)為0.583μm。與其他傳統(tǒng)生產(chǎn)超細(xì)拋光粉工藝相比,本方法簡(jiǎn)便易行,具有反應(yīng)溫度低,反應(yīng)時(shí)間短,陳化時(shí)間短的優(yōu)勢(shì),且與傳統(tǒng)生產(chǎn)超細(xì)拋光粉工藝對(duì)比省去球磨或粉碎這一工序,可以直接得到滿足客戶需要的超細(xì)拋光粉,具有較高的經(jīng)濟(jì)效益和成本優(yōu)勢(shì)。
[Abstract]:Using lanthanum cerium chloride as raw material, ammonium bicarbonate as precipitant and ammonium fluoride as fluorination agent, rare earth polishing powder precursor was prepared by co-precipitation method. The properties of cerium based polishing powder were studied by aging temperature and the amount of fluorine. The results showed that the reaction temperature was room temperature, the reaction time was 50 min, the aging temperature was 80 鈩，

本文編號(hào)：1623126