联合法粗液碳分生产白色氢氧化铝研究  

Study on the Production of White Aluminum Hydroxide by Carbonation Decomposition from Raw Combination Solution

作　　者：李韶辉 刁克建 高建阳 王晓锋 

机构地区：[1]中铝山东有限公司研究院,山东淄博255061

出　　处：《有色冶金节能》2016年第4期9-11,26,共4页Energy Saving of Nonferrous Metallurgy

摘　　要：主要对白色氢氧化铝生产中影响溶液色度和产品白度等指标的两个重要因素进行研究,包括:不同铝酸钠溶液合流分解析出Al(OH)_3的性能指标;碳分分解粗氢铝重新溶解溶液再进行分解过程,Al(OH)_3产品中杂质含量的变化;溶液中氧化铁及有机物等杂质的析出与Al(OH)_3产品物化性能的关系。结果表明,通过预分解可以使粗液中的杂质得到净化,进而在第二段分解时得到白度指标达到先进水平的白色氢氧化铝。The important factors that influence the solution chroma and whiteness indexes of white aluminum hydroxide production are mainly studied in the paper.It mainly includs the performance index of Al（OH）_3 with the precipitation of the confluence flows of different sodium acuminate solution;changes of impurities content of aluminum hydroxide product in the precipitation process of carbonation precipitation of raw hydrogen aluminum re-dissolved solution;the relationship between the precipitation of impurities such as iron oxide and organic matter in solution and the physical and chemical properties of A1（0H）_3.The result shows that the raw liquid impurities can be purified by precipitation in advance,and then the whiteness index reaches the advanced level of the white aluminum hydroxide when in the second precipitation.

关 键 词：色度 白度 溶液合流 碳分分解 氢铝重溶 

分 类 号：TQ133.1[化学工程—无机化工]