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乳状液膜法从赤泥浸出液中提取钪 总被引:1,自引:1,他引:0
研究了Cyanex272为载体的乳状液膜从赤泥浸出液中提取钪的工艺,考察了内相酸度、外相酸度、油内比、乳水比等因素对钪提取率的影响,结果表明:在确定的工艺条件下,一次间歇式提取后,钪提取率达90%。 相似文献
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对比了盐酸、硫酸和硝酸从赤泥中提钪的效果。结果表明,硫酸是一种合适的浸出剂,在硫酸体积浓度为30%、液固比6、100℃浸出120min的条件下,钪浸出率可达84%。影响赤泥中钪浸出率的因素显著性依次为硫酸浓度、反应时间、浸出温度、液固比。 相似文献
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钪作为一种稀土金属,在许多行业得到了广泛的应用。从含钪废弃物中回收钪,不仅可以解决废弃物污染环境的问题,还可以缓解我国钪供应量严重不足的现状。本文综述了从各种含钪废弃物(赤泥、钛白废酸、钨渣、粉煤灰)中回收钪的研究进展,并对我国钪回收工艺技术的发展进行展望,指出钪回收工业将向高效化、低成本化和绿色化的方向发展。 相似文献
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采用硫酸熟化浸出提取赤泥中的钪。在98%硫酸加入量34 mL、熟化温度260℃、熟化时间60min、浸出液固比4∶1的最优条件下,赤泥中钪的液计与渣计浸出率均达91%以上。 相似文献
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钪的回收及提取现状 总被引:6,自引:0,他引:6
我国钪资源十分丰富,已探明的含钪矿物种类高达800多种。钪金属及其化合物具有许多优异性能,广泛应用于多种生产领域。然而,钪在自然界中主要以伴生矿物的形式较稀散地分布于其他矿物中,其分离和提取难度高、工艺复杂。归纳可回收钪的原料类型、简化回收及提取钪的工艺受到我国选矿工作者的普遍重视。介绍了主要赋钪矿物资源,根据处理含钪矿物时钪的富集走向不同,进一步将可回收及提取钪的物料归纳为原生矿、渣和处理液3类;分析了从不同类别含钪物料中回收及提钪的方法和步骤;列举了一些从具体含钪物料中回收及提取钪的研究和应用实例;根据国内外回收及提钪的现状,提出发展方向:兼顾主金属及其他有价金属的回收、尽量简化钪的回收和提取工艺、尽可能降低生产成本;注重联合多种方法来改善浸出和提钪工艺;寻求更多可回收钪的物料和回收、提钪的方法。 相似文献
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含钪料液中杂质的去除 总被引:3,自引:0,他引:3
含钪赤泥盐酸浸出液中杂质含量很高,在提取钪之前必须去除。研究了含钪赤泥盐酸浸出液中杂质Fe、Al、Ti、Zr的去除:首先在溶液中加入3%H_2O_2—3.0mol/L H_2SO_4溶液,将钛转化为不被P507萃取的过氧钛酸,然后用P507萃取钪,用6mol/L HCl和蒸馏水洗涤有机相,除去被同时萃取的Fe和Al,再用1%HF溶液洗涤除去Zr,最终使钪与杂质元素分离。最后得到的产品中Sc_2O_3质量分数为96.25%。 相似文献
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<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic 相似文献
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正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field, 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year, 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform. 相似文献
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正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness. 相似文献
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正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully. 相似文献