CAJ | 학술논문

以某高温合金酸浸渣为原料，利用碱焙烧?水浸?离子交换?结晶工艺回收钨制备仲钨酸铵。考察了焙烧温度、焙烧时间、碱用量、水浸温度及水浸时间等因素对钨回收率的影响。实验得出最佳碱焙烧?水浸工艺条件为：焙烧温度700℃、焙烧时间60 min、碱用量为酸浸渣质量的80％、水浸温度85℃、水浸时间60 min，在此条件下，富钨渣中钨回收率可达99％以上。将焙烧?水浸液稀释后，采用201×7树脂在流速为5 cm／min的条件下进行吸附，吸附完毕后使用5 mol／L NH4Cl＋2 mol／L NH3·H2O进行解吸，解吸流速为吸附流速的1／2，取解吸高峰液进行结晶，当结晶率80％时仍可得到合格的仲钨酸铵产品。
이모고온합금산침사위원료，이용감배소?수침?리자교환?결정공예회수오제비중오산안。고찰료배소온도、배소시간、감용량、수침온도급수침시간등인소대오회수솔적영향。실험득출최가감배소?수침공예조건위：배소온도700℃、배소시간60 min、감용량위산침사질량적80％、수침온도85℃、수침시간60 min，재차조건하，부오사중오회수솔가체99％이상。장배소?수침액희석후，채용201×7수지재류속위5 cm／min적조건하진행흡부，흡부완필후사용5 mol／L NH4Cl＋2 mol／L NH3·H2O진행해흡，해흡류속위흡부류속적1／2，취해흡고봉액진행결정，당결정솔80％시잉가득도합격적중오산안산품。
Tests on recovering tungsten from tungsten?rich residue left after acid leaching of superalloy was conducted by the process of alkali roasting?water leaching?ion exchange?crystallization. Effects of temperature and time for roasting, NaOH dosage, temperature and time for water leaching on the tungsten recovery was investigated. In the test, the roasting process at 700℃ for 60 min with NaOH dosage 80%of the mass of residue, which is followed by a water leaching process at 85℃ for 60 min, resulted in the recovery of tungsten higher than 99%. The final leachate, after being diluted, was subjected to an adsorption process with 201 × 7 resin at a flow rate of 5 cm/min, followed by a desorption process by 5 mol/L NH4 Cl+2 mol/L NH3 · H2 O at flow rate of 2. 5 cm/min, resulting in a high?content liquor, which was then crystallized. And a qualified ammonium paratungstate (APT) can be finally obtained with the crystallization rate at 80%.