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对湿法炼锌中锌矿原料的有机物去除工艺进行了研究。对企业常用的两种锌矿原料(A、B)中有机物去除工艺进行了筛选,以化学需氧量(COD)为指标,考察了碱的用量、洗涤温度、用水量、洗涤时间、洗涤次数对锌矿原料中有机物去除的影响。分别得到了这两种锌矿原料中有机物去除的最佳工艺条件:(1)固定被处理矿粉为10g,当pH值为8.0,洗涤温度为75℃,用水量为70mL,洗涤时间为70min时,对锌矿粉A中有机物的去除效果最佳,去除有机物的化学需氧量为45.0mg/L;(2)固定被处理矿粉为10g,当pH值为8.5,洗涤温度为80℃,用水量为80mL,洗涤时间为60min时,对锌矿粉B中有机物的去除效果最佳,去除有机物的化学需氧量为117.2mg/L。在各自的最佳实验条件下,进行了3次平行实验,都能得到稳定的结果。
The removal of organic matter from the zinc ore raw material in zinc hydrometallurgy was studied. The removal of organic matter from two kinds of zinc ore raw materials (A, B) commonly used by enterprises was screened. The chemical oxygen demand (COD) was taken as an indicator to investigate the effects of alkali dosage, washing temperature, water consumption, washing time, Effect on Removal of Organic Matter in Zinc Minerals. The optimum technological conditions for the removal of organic matter from the two zinc ore raw materials were obtained respectively: (1) 10g of fixed mineral powder was fixed; when the pH value was 8.0, the washing temperature was 75 ℃, the water consumption was 70mL and the washing time was 70min , The removal efficiency of organic matter in zinc ore powder A is the best, the chemical oxygen demand of removing organic matter is 45.0mg / L; (2) The amount of mineral powder to be treated is 10g, when the pH value is 8.5 and the washing temperature is 80 ℃ , Water consumption of 80mL, washing time of 60min, the best removal of organic matter in the zinc ore B, COD removal of organic matter was 117.2mg / L. Under the best experimental conditions, three parallel experiments were conducted to obtain stable results.