D302-Ⅱ树脂吸附铼的性能研究及应用

针对地浸采铀浸出液低含量铼的回收,研究了D302-Ⅱ弱碱性阴离子交换树脂吸附和解吸铼的性能和机制。通过静态试验考察温度、酸度、时间对树脂吸附的影响;通过动态试验考察了溶液酸度和流速的影响,并进行了解吸剂及其浓度影响试验、抗干扰试验及树脂再生的试验;用地浸采铀浸出液通过D302-Ⅱ树脂,进行模拟回收铼试验。结果表明,D302-Ⅱ树脂对铼的吸附速率快,吸附反应速率常数k=1.6×10-3s-1,半交换期t1/2=433 s。吸附酸度在pH 2.0～5.0范围内,有利于铼的吸附。吸附平衡服从Freundish吸附等温式,吸附反应放热,反应可在常温下进行。动态上柱酸度选择为pH 2.0～5.0,流速1～2 ml.min-1,铼的吸附率可达95%以上;洗脱液选择NH4OH,25倍树脂床体积的3 mol.L-1NH4OH溶液可将铼洗脱完全。地浸采铀浸出液中的共存离子不影响铼的吸附和解吸,0.5 mol.L-1H2SO4溶液可使树脂再生。树脂对铼的静态和动态吸附容量分别为166和162 mg.g-1干树脂,对浓度低至0.03 mg.L-1铼溶液吸附和解吸,回收率可达96%～102%,表明该树脂有较好的应用前景。     

钼精矿焙烧烟气淋洗液中回收铼的试验研究

针对低浓度含铼淋洗液中铼的回收进行了树脂吸附和解吸试验研究。通过研究对比旧树脂和新型树脂,得出合适的吸附和解吸条件。同时通过对温度、流速、解吸浓度等因素进行研究。结果表明,随着氨水浓度升高至3%时,解吸率可升高到98.54%。同时温度越低,流速越小,越有利于铼吸附。     

P510树脂从含金氯化溶液中吸附金和解吸金的性能研究

用静态法研究了PS10树脂从酸性含金氯化溶液中吸附金及其解吸金的性能。考察了吸附时间、酸度、初始金浓度、温度等因素对树脂吸附金的影响,同时考察了解吸时间、解吸剂硫脲浓度对金解吸率的影响。在适宜条件下,PS10树脂对金的吸附率和解吸率均达到99％以上。     

用D990从污酸中吸附回收铼的试验研究

进行了用D990从铜冶炼烟气淋洗污酸中吸附回收铼的试验研究。考察了H_2SO_4浓度、吸附流速、吸附时间对Re、As、Si吸附率的影响;用NH_3·H_2O对D990富铼树脂进行解吸,考察了NH_3·H_2O浓度、流速的影响。结果表明,D990对铼的吸附性较强,对As、Si有一定的富集作用,当流速4 cm/min、吸附8h时,D990树脂对铼的吸附率为90.4%;用NH_3·H_2O解吸铼,浓度为6%、流速为4 cm/min时,铼解吸率达97.3%;D990对铼的饱和吸附量为0.1 g/g D990干树脂。     

D296树脂从含铼酸性溶液中吸附铼的研究

采用离子交换法从含铼酸性溶液中提取铼,通过静态试验确定选用D296树脂,通过动态试验考察了料液pH、流速和料液与树脂体积比对铼吸附率的影响,并测定了铼吸附曲线。结果表明,在反应温度25℃、料液pH=1.5、吸附流速每小时7.2倍树脂床体积的条件下,铼吸附率达到97.91%,每克D296树脂对铼的饱和吸附容量为114mg。     

离子交换法处理贫铜浸出液的研究

研究了不同的离子交换树脂、不同的树脂型式对贫铜浸出液中铜的吸附能力。同时考察了吸附速度和解吸速度以及解吸剂浓度等因素对回收铜的影响。结果表明 ,Na型116×24树脂 ,能经济有效地回收贫铜浸出液中的铜。     

353E树脂提取金的研究

本文通过对几种树脂比较后发现，在氯化溶液中３５３Ｅ树脂对金是一种较为理想的吸附剂，考察了溶液中金含量，酸度，氯离子浓度等因素对３５３Ｅ树脂吸附金的影响，酸度，硫脲浓度，温度等对硫脲解吸金的影响，在适宜条件下，金的吸附率和解吸率都在９８％以上。     

大孔弱碱性树脂吸附铼的动力学研究

本文报道D380大孔弱碱性阴离子交换树脂从硫酸铵溶液中吸附铼浓度的动力学研究。考察了溶液铼浓度,树脂颗粒半径和温度对交换速度的影响;测定了有效扩散系数、表观活化能和活化熵等动力学和热力学参数。结果表明,粒内扩散是交换过程的唯一控制步骤,G.E.boyd粒内扩散方程也适用于大孔树脂。     

离子交换法处理铜矿浸出渗透液的研究

研究了不同种树脂、树脂的高度、吸附时间以及吸附流速对铜矿浸出渗透液的吸附能力。同时考查了解吸剂的浓度,以及解吸剂的流速对解吸效果的影响,结果表明采用116*24树脂回收铜是可行的。     

阴离子交换树脂F3吸附铼的研究

对阴离子交换树脂F3吸附、解吸铼的条件及其抗离子干扰效果作了研究。结果表明 ,在 0～ 0 5mol/L的盐酸介质中 ,F3树脂能定量吸附铼 ,并与其他金属阳离子分离 ;吸附在树脂上的铼用少量 4 0mol/L盐酸即可完全洗脱 ;吸附和解吸过程均服从Freundlish等温吸附式。铼的静态饱和吸附容量为 2 5 9 7mg/g干树脂 。该树脂有可能成为回收铼的良好吸附剂。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<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     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

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,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

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     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

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     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

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,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

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.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

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.