CAJ | 학술논문

以硫酸锌溶液为研究对象，研究了氧化铋脱除硫酸锌溶液中氯的工艺条件，结果表明，较佳的工艺条件为：pH值约2．0，50℃，氧化铋用量为理论计算值的1．5倍，反应时间2 h，此条件下除氯后溶液中Cl含量为0．28 g／L，Bi含量为0．96 mg／L。同时研究了氯氧铋转化的工艺参数条件，较佳的工艺条件为：NaOH用量为计算值2倍当量，初始碱浓度1 mol／L，反应时间4 h，常温，在此条件下可达到转化率93．97％、余铋浓度约2．35 mg／L的较好转化效果。进行了6周期工业实验，与模似实验结果重现性好。本工艺操作简单，能有效降低硫酸锌溶液中氯的浓度，且铋损失较小。
이류산자용액위연구대상，연구료양화필탈제류산자용액중록적공예조건，결과표명，교가적공예조건위：pH치약2．0，50℃，양화필용량위이론계산치적1．5배，반응시간2 h，차조건하제록후용액중Cl함량위0．28 g／L，Bi함량위0．96 mg／L。동시연구료록양필전화적공예삼수조건，교가적공예조건위：NaOH용량위계산치2배당량，초시감농도1 mol／L，반응시간4 h，상온，재차조건하가체도전화솔93．97％、여필농도약2．35 mg／L적교호전화효과。진행료6주기공업실험，여모사실험결과중현성호。본공예조작간단，능유효강저류산자용액중록적농도，차필손실교소。
Processing parameters for dechlorination of zinc sulfate solution by bismuth oxide were investigated, and the results show that dechlorination can be accomplished after 2 h reaction in a pulp with pH value of 2. 0 at 50 ℃ by bismuth oxide with weight 1. 5 times the theoretically calculated dosage. The chlorine concentration can be reduced to 0.28 g/L with the residue bismuth concentration at 0.96 mg/L. The conversion conditions of bismuth oxychloride were also studied and optimized as follows: initial alkali concentration at 1 mol/L, twofold calculated NaOH dosage, 4 h reaction at room temperature, with which, good conversion effect can be achieved as the conversion rate amounted to 93.97% with the residue bismuth concentration around 2.35 mg/L. A six?period commercial test was conducted, leading to results consistent with that from laboratory tests. This processing technique is easy to operate, with which chlorine concentration in zinc sulfate solution can be effectively reduced with less loss of bismuth.