Title: Comprehensive utilization treatment tachnology of aluminium waste slag, waste ash
Application Number: 200610048565 Application Date: 2006.08.08
Publication Number: 1903725 Publication Date: 2007.01.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01F7/04;C01B39/04;B09B3/00
Applicant(s) Name: Shanghai Tiancheng Commercial Dev. Co., Ltd. Address:
Inventor(s) Name: Yang Guanqun;Wu Zhucheng;Yang Sheng;Hoshino Sbiger
Attorney & Agent: zhang xintang zhang houshan
Abstract:
    The present invention relates to a comprehensive utilization treatment process of waste aluminium slag and waste aluminium dust. Said process includes the following several steps: using caustic soda solution to dissolve waste aluminium slag and waste aluminium dust to obtain slurry; making the slurry undergo the process of liquid-solid separation, using liquid phase to obtain sodium aluminate solution; in solid phase adding auxiliary material Na2CO3 and limestone to make sintering; crushing and grinding the sintered clinker, using dilute alkaline solution to dissolve the sintered clinker, utilizing liquid phase to obtain the sodium aluminate solution, making the obtained sodium aluminate solution produce hydrolysis or carbonation decomposition so as to obtain aluminium hydroxide. Said process also can make the following steps: adding water-glass into the obtained sodium aluminate solution to make them into colloid solution, adding crystallization orientating agent in the above-mentioned colloid solution, uniformly stirring them, heating, standing still at constant temperature, making the crystallized slurry undergo the process of liquid-solid separation, washing, drying solid phase to obtain zeolite.
Time: 11
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