CAJ | 학술논문

两性螯合捕收剂DJW-2是东北大学为改善磁选铁精矿反浮选脱硅效果而研制的新型捕收剂,为了解其捕收石英的性能,以石英纯矿物为浮选对象,进行了DJW-2用量、适宜的矿浆pH值、活化剂CaCl2用量、适宜的浮选温度试验。结果表明,在矿浆pH=9,DJW-2用量为750 mg/L,浮选温度为38~18℃情况下均可取得90%以上的回收率。进一步的Zeta电位检测和红外光谱分析表明,DJW-2在石英表面以氢键吸附和化学吸附为主。因此,DJW-2是磁选精矿反浮选脱硅的高效、低耗、强适应性捕收剂。
량성오합포수제DJW-2시동북대학위개선자선철정광반부선탈규효과이연제적신형포수제,위료해기포수석영적성능,이석영순광물위부선대상,진행료DJW-2용량、괄의적광장pH치、활화제CaCl2용량、괄의적부선온도시험。결과표명,재광장pH=9,DJW-2용량위750 mg/L,부선온도위38~18℃정황하균가취득90%이상적회수솔。진일보적Zeta전위검측화홍외광보분석표명,DJW-2재석영표면이경건흡부화화학흡부위주。인차,DJW-2시자선정광반부선탈규적고효、저모、강괄응성포수제。
The new amphoteric chelating collector DJW-2 was developed by Northeastern University to improve the effect of reverse flotation desilication in the magnetic separation concentrate. The tests on the dosage of DJW-2, optimum pH value of the pulp, the amount of calcium chloride and suitable flotation temperature were investigated to investigate the collecting performance on quartz, using pure mineral quartz as floating object. The result showed that when the pulp pH value was 9, dosage of DJW-2 was 750 mg/L, flotation temperature was between 38 and 18℃, the recovery rate could reach more than 90%. The further a-nalysis on the zeta potential measurement and the infrared spectrum indicated that the dominated force that the DJW-2 on the sur-face of quartz were hydrogen boning adsorption and chemical adsorption. Therefore, the DJW-2 is a collector with high efficien-cy, low energy consumption and strong adaptability on reverse flotation desilication of concentrate of magnetic separation.