矿冶工程
礦冶工程
광야공정
2014年
4期
70-74
,共5页
郭瑞%王靖坤%王治钧%马光%李进
郭瑞%王靖坤%王治鈞%馬光%李進
곽서%왕정곤%왕치균%마광%리진
废旧高温合金%净化%水解%萃取%镍%铬
廢舊高溫閤金%淨化%水解%萃取%鎳%鉻
폐구고온합금%정화%수해%췌취%얼%락
superalloy scrap%purify%hydrolysis%extraction%Ni%Co
某镍基废旧高温合金酸浸液中含有Cr、Al、Fe等杂质元素,采用“水解沉淀初步除杂-萃取深度除杂”法处理此浸出液。水解初步除杂过程中,水解温度为80℃,氧化剂用量系数为30,NaOH浓度为10%,水解终点pH=4.5,机械搅拌速率为300 r/min, Cr、Al、Fe的除杂率分别为97.8%、98.6%和99%;萃取深度除杂过程中采用常温下10级逆流萃取,P204的浓度为15%,正丁醇加入量为5%,萃取相比O/A=1/2,萃取初始pH=1.0,萃取时间2 min时, Cr、Al、Fe除杂率分别为93.8%、90%和92.0%。该工艺有效实现了杂质Cr、Al、Fe与Ni、Co的分离,除杂后液可直接进行镍钴分离,回收镍、钴。
某鎳基廢舊高溫閤金痠浸液中含有Cr、Al、Fe等雜質元素,採用“水解沉澱初步除雜-萃取深度除雜”法處理此浸齣液。水解初步除雜過程中,水解溫度為80℃,氧化劑用量繫數為30,NaOH濃度為10%,水解終點pH=4.5,機械攪拌速率為300 r/min, Cr、Al、Fe的除雜率分彆為97.8%、98.6%和99%;萃取深度除雜過程中採用常溫下10級逆流萃取,P204的濃度為15%,正丁醇加入量為5%,萃取相比O/A=1/2,萃取初始pH=1.0,萃取時間2 min時, Cr、Al、Fe除雜率分彆為93.8%、90%和92.0%。該工藝有效實現瞭雜質Cr、Al、Fe與Ni、Co的分離,除雜後液可直接進行鎳鈷分離,迴收鎳、鈷。
모얼기폐구고온합금산침액중함유Cr、Al、Fe등잡질원소,채용“수해침정초보제잡-췌취심도제잡”법처리차침출액。수해초보제잡과정중,수해온도위80℃,양화제용량계수위30,NaOH농도위10%,수해종점pH=4.5,궤계교반속솔위300 r/min, Cr、Al、Fe적제잡솔분별위97.8%、98.6%화99%;췌취심도제잡과정중채용상온하10급역류췌취,P204적농도위15%,정정순가입량위5%,췌취상비O/A=1/2,췌취초시pH=1.0,췌취시간2 min시, Cr、Al、Fe제잡솔분별위93.8%、90%화92.0%。해공예유효실현료잡질Cr、Al、Fe여Ni、Co적분리,제잡후액가직접진행얼고분리,회수얼、고。
The leachate of a nickel-base superalloy scrap containing a large quantity of impurities, such as Cr、Al、Fe, was treated by adopting the process of hydrolysis precipitation-extraction for impurities removal. In the preliminary process for removing impurities, hydrolysis at a temperature of 80℃, with dosage of oxidant at 30, concentration of NaOH at 10%, and pH=4.5 at the terminal of hydrolysis, with mechanical stirring speed at 300 r/min, removal rate of Cr, Al, Fe were 97.8%, 98.6% and 99.0%, respectively. Then, a further extraction process adopted 10-stage countercurrent extraction at room temperature, with the volume fraction of P204 at 15%, addition of Butanol around 5%, O/A=1/2, initial pH=1.0 for extraction, removal rate of Cr, Al, Fe reached 93.8%, 90.0%and 92.0%, respectively, after extraction for 2 min. This technique not only realized removing of Cr, Al and Fe impurities from Ni and Co, but also the liquid after impurity removal can be directly subjected to Ni/Co separation process for recovery of Ni and Co.