(1. 西安理工大學 材料科學與工程學院，西安 710048；
2. 云南馳宏鋅鍺股份有限公司，曲靖 655000；
3. 六盤水師范學院 化學與材料工程學院，六盤水 553004)
摘 要: 針對高鈷硫酸鋅溶液采用傳統(tǒng)工藝鈷難以脫除的問題，提出兩段高溫脫鈷工藝，系統(tǒng)地研究鋅粉用量、鋅粉添加方式、添加劑用量、攪拌強度和反應時間對鈷脫除的影響。結果表明：經(jīng)第一段凈化預處理后，控制第二段凈化溶液溫度為85 ℃，攪拌速度為75 r/min，鋅粉用水漿化處理，鋅粉用量為1.5 g/L，銻鈷比為0.3:1，硫酸銅用量為30 mg/L，凈化60 min后鈷含量為0.64 mg/L，與單段直接高溫凈化除鈷相比，兩段高溫凈化除鈷工藝具有較好的技術經(jīng)濟指標。
關鍵字: 鈷；硫酸鋅溶液；凈化
（1. Faculty of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;
2. Yunnan Chihong Zn-Ge Co., Ltd., Qujing 655000, China;
3. School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China）
Abstract:In order to remove the cobalt by the conventional process for the high-cobalt-zinc sulfate solution, a two-stage high-temperature cobalt removal process was proposed, and the influences of zinc powder addition amount, zinc powder addition method and additive addition amount, stirring strength and reaction time on cobalt removal were systematically studied. The results show that, after a period of purification pretreatment, control secondary purification liquid temperature is 85 ℃, the stirring speed is 75 r/min, zinc powder pulp treatment, the addition amount of zinc powder is 1.5 g/L, antimony cobalt mass ratio is 0.3:1, copper sulfate addition amount is 30 mg/L, and the cobalt content is 0.64 mg/L after purification 60 min. Compared with one-stage cobalt removal process, two-stage high-temperature cobalt removal process has better technical and economic indicators.
Key words: cobalt; zinc sulfate solution; purification
