铝土矿选矿药剂苯甲羟肟酸生产工艺的优化与探讨  

Optimization and Discussion on the Production Process ofBenzoic Hydroxamic Acid for Bauxite Beneficiation

作　　者：左林举 陈晓静 ZUO Linju;CHEN Xiaojing(Zhongzhou Aluminum Co.,Ltd.,Aluminum Corporation of China Limited,Jiaozuo 454174,China)

机构地区：[1]中铝中州铝业有限公司,河南焦作454174

出　　处：《绿色矿冶》2024年第4期73-77,共5页Sustainable Mining and Metallurgy

摘　　要：羟肟酸在铝土矿浮选中对提高精矿品位起着非常重要的作用。本文讨论了苯甲羟肟酸合成生产工艺的影响因素,通过调整物料添加比例、优化冷却系统、延长反应时间等措施优化苯甲羟肟酸合成工艺。优化后,苯甲羟肟酸含量提高,同时盐酸羟胺的用量也降低了约17%,不仅降低生产成本,改善工作环境,而且选矿指标也显著提高。由于合成盐酸羟胺的原料有剧毒,且合成率低,价格高,探讨了硫酸羟胺替代盐酸羟胺的可行性,并对硫酸羟胺合成苯甲羟肟酸工艺进行了优化。结果表明,硫酸羟胺生产的苯甲羟肟酸指标达标,且满足铝土矿选矿需要,可以替代盐酸羟胺合成苯甲羟肟酸,缓解了产品紧张局面,降低了生产成本。Hydroxamic acid plays a very important role in improving concentrate grade in bauxite flotation.In this paper,the influencing factors of the synthesis process of benzohydroxamic acid were discussed.The synthesis process of benzohydroxamic acid was optimized by adjusting the proportion of material addition,optimizing the cooling system and prolonging the reaction time.After optimization,the content of benzohydroxamic acid is increased,and the dosage of hydroxylamine hydrochloride is also reduced by about 17%,which not only reduces the production cost,improves the working environment,but also significantly improves the beneficiation index.Because the raw materials for the synthesis of hydroxylamine hydrochloride are highly toxic,and the synthesis rate is low and the price is high,the feasibility of replacing hydroxylamine hydrochloride with hydroxylamine sulfate was discussed,and the process of synthesizing benzohydroxamic acid from hydroxylamine sulfate was optimized.The results show that the index of benzohydroxamic acid produced by hydroxylamine sulfate meets the standard and meets the needs of bauxite beneficiation.It can replace hydroxylamine hydrochloride to synthesize benzohydroxamic acid,alleviate the product tension and reduce the production cost.

关 键 词：铝土矿 苯甲羟肟酸 盐酸羟胺 硫酸羟胺 

分 类 号：TF821[冶金工程—有色金属冶金]