CAJ | 학술논문

弱碱性阴离子交换树脂(伯胺型)可从钨酸盐溶液中优先吸附--24MoO xS x ，且负载树脂易于用NaOH解吸，但当钨酸钠溶液中钼含量较低时其对钼的吸附容量很小。为提高其对钼的吸附容量，研究钨酸钠溶液成分及硫化剂种类对钼吸附行为的影响。结果表明：对于含93g/L WO3的钨酸钠溶液，钼的吸附率和吸附容量随料液中钼浓度的增加而增大；相对于Na2S，以NaHS作为硫化剂可明显降低溶液的平衡pH值，显著改善钼的硫化效果，从而更有利于钼的吸附；对于含85 g/L WO3、7.6 g/L Mo、100 g/L Na2CO3的钨酸钠溶液，以NaHS作为硫化剂硫化后，经动态吸附得到的钨酸钠溶液中，WO3与Mo的质量比达到1970：1，除钼率达99.4%，钨损失率仅为1.5%，钼的吸附容量(单位体积的湿树脂吸附的钼的质量)达31 mg/mL。经1.0 mol/L NaOH溶液解吸后，钼的解吸率达97.3%。
약감성음리자교환수지(백알형)가종오산염용액중우선흡부--24MoO xS x ，차부재수지역우용NaOH해흡，단당오산납용액중목함량교저시기대목적흡부용량흔소。위제고기대목적흡부용량，연구오산납용액성분급류화제충류대목흡부행위적영향。결과표명：대우함93g/L WO3적오산납용액，목적흡부솔화흡부용량수료액중목농도적증가이증대；상대우Na2S，이NaHS작위류화제가명현강저용액적평형pH치，현저개선목적류화효과，종이경유리우목적흡부；대우함85 g/L WO3、7.6 g/L Mo、100 g/L Na2CO3적오산납용액，이NaHS작위류화제류화후，경동태흡부득도적오산납용액중，WO3여Mo적질량비체도1970：1，제목솔체99.4%，오손실솔부위1.5%，목적흡부용량(단위체적적습수지흡부적목적질량)체31 mg/mL。경1.0 mol/L NaOH용액해흡후，목적해흡솔체97.3%。
Thiomolybdate ( --24MoO xS x ) has high affinity to alkalescent anion exchange resin (primary amine), and can be striped with NaOH solution easily, but the adsorption capacity of Mo is very low when Mo content in Na2WO4 solution is low. To increase the adsorption capacity of Mo, the effects of Na2WO4 composition of solution and the kind of sulfurizing reagent on the adsorption behavior of Mo were studied. The results show that the adsorption rate and adsorption capacity of Mo increases with increasing Mo concentration for Na2WO4 solution containing 93 g/L WO3. The sulfurizing reagent NaHS, as a alternative to Na2S, lowers the equilibrium pH value of solution and favors sulfurizing and adsorbing of Mo. The Na2WO4 solution containing 85 g/L WO3, 7.6 g/L Mo, 100 g/L Na2CO3 sulfurized with NaHS is adsorbed by means of column test, and mass ratio of WO3 to Mo of the elution before breakthrough reaches 1970:1, the removal ratio of Mo is 99.4%, the loss rate of WO3 is 1.5%, and the adsorption capacity of Mo is 31 mg/mL. The stripping ratio of Mo is 97.3%when the loaded resin stripped with 1 mol/L NaOH solution.