CAJ | 학술논문

为得到硫酸镍溶液除铁的合适工艺条件，以硫酸铵焙烧红土镍矿的熟料溶出液为原料，采用 NH4HCO3合成黄铵铁矾。考查了反应温度、反应时间、反应终点pH以及Fe3+初始浓度对除铁率的影响。以上因素均对Fe3+的去除率有显著影响，其中反应温度的影响最为显著。合适的反应条件为：Fe3+初始浓度19.36 g/L、反应温度95°C、反应时间3.5 h、反应终点pH2.5。在此条件下所得到的黄铵铁矾为包含片状或棱形颗粒的花簇结构。
위득도류산얼용액제철적합괄공예조건，이류산안배소홍토얼광적숙료용출액위원료，채용 NH4HCO3합성황안철반。고사료반응온도、반응시간、반응종점pH이급Fe3+초시농도대제철솔적영향。이상인소균대Fe3+적거제솔유현저영향，기중반응온도적영향최위현저。합괄적반응조건위：Fe3+초시농도19.36 g/L、반응온도95°C、반응시간3.5 h、반응종점pH2.5。재차조건하소득도적황안철반위포함편상혹릉형과립적화족결구。
To obtain the appropriate conditions for eliminating Fe3+from NiSO4 solution, the digestion solution of the clinker was used as raw material, which was obtained from roasting the nickel oxide ore with (NH4)2SO4. The ammonium jarosite was successfully synthesized from the solution with analytic grade NH4HCO3. The effects of reaction temperature, reaction time, end pH value of reaction on the removal rate of iron were investigated, and the effect of the initial concentration of Fe3+was also discussed. All of those factors had significant effects on the removal rate of Fe3+, among which the reaction temperature was the most prominent. The appropriate reaction conditions were concluded as follows: reaction temperature 95 °C, reaction time 3.5 h, end pH value of reaction 2.5 at initial concentration of Fe3+19.36 g/L. The physical aspect of (NH4)2Fe6(SO4)4(OH)12 was cluster figure composed of sheet or prismatic particles with smooth surface.