粉煤灰盐酸法生产氧化铝工艺中溶出料浆的沉降分离研究  

Study on settlement separation of dissolved slurry in process of producing alumina by fly ash and hydrochloric acid

作　　者：李文清 邹萍 Li Wenqing;Zou Ping(Shenhua Zhungeer Energy Resource Comprehensive Development Co.,Ltd.,Erdos 010300,China)

机构地区：[1]神华准能资源综合开发有限公司

出　　处：《轻金属》2019年第10期12-16,共5页Light Metals

基　　金：国家科学技术部“十二五”科技计划项目(2011BAA04B05)

摘　　要：国家能源集团自主研发的“一步酸溶法”粉煤灰提取氧化铝技术,实现了粉煤灰的高附加值、综合利用。沉降分离是影响氧化铝生产效率的重要因素。本文主要对絮凝剂、温度、氯化铝浓度、固含等因素进行了研究,确定了最优的试验条件,为工业化中试运行提供了科学可靠的数据支持和设计依据。The technology of extracting alumina from fly ash by one-step acid-dissolving method independently developed by China Energy Investment Corporation has realized high added value and comprehensive utilization of fly ash.Settlement separation is an important factor affecting the production efficiency of alumina.The factors such as flocculant,temperature,concentration of aluminium chloride and solid content are studied,and the optimal test conditions are determined,which provides scientific and reliable data support and design basis for industrial pilot operation.

关 键 词：酸法生产氧化铝 溶出料浆 沉降性能 

分 类 号：TF111.315[冶金工程—冶金物理化学]