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Henan Branch of China Aluminum 70 million tons of alumina expansion projects under construction

Scattered seed. Currently the company uses the seed mechanical activation device successfully resolved the problem of seed quality, seed added activity when compared with the solution without adding the average yield increase 2.6g / 1 or so. Table 3 was added seed yield compared before and after the solution of 3 conclusions and recommendations of the foregoing analysis, I believe that will control and reduce the decomposition temperature of the first tank liquid caustic ratio and an appropriate increase in the alumina concentration are combined and cooled with a company in the middle and efficient mechanical stirring and living l dagger plant seed, after aluminum hydroxide to improve seed quality and yield an effective way to solution. However,ugg italia, to improve concentration and reduce the liquid liquid caustic alumina ratio, although the solution can increase productivity and reduce production process steam consumption, energy consumption, but if the over-concentration of original solution will increase the decomposition rate of seed molecular ratio of mother liquor and recycling reduced, and the red mud and the separation of aluminum hydroxide and washing a negative impact, while also reducing product size and strength of aluminum hydroxide, it must be the appropriate choice of liquid concentration and ak0 production status according to a company, the appropriate Decomposition conditions for seed the following recommendations: (1) 2O3 concentration of 160 ~ 175g / 1,140 ~ 160; (2) the initial temperature of 62 ~ 65 ��,ed hardy clothing, the final temperature of 45 ~ 48 ��; (3) seed than the 23 to 30; ( 4) The decomposition of time 56 ~ 65hr. References: [1] Mei Jianshan, alumina production process [M]. Head Office of Vocational Education colored materials, 1989,10 [2] the internal exchange of information [z], 1999 �� 7 months. [3] Yang Chung-yu. Alumina production technology (Revised Edition) [M] Metallurgical Industry Press,ugg milano, 1993,10. [4] Xue-Ying Zhang,stivali ugg, and wind sticks of high concentration of seed decomposition process technology [A]. Eleventh National Technical Information Exchange Meeting Proceedings alumina (c] 2000. 9. Hejin. (Editor Wenjun) ? Information Court �� '�� one. one hundred and eleven... a. a '.. a''.~��.��' ��'��\Chalco Henan branch expansion 7o million tons of alumina projects under construction: �� : 2003 �� 11 8, state key construction projects in Henan Branch of China Aluminum 70 million tons of alumina expansion project has been started, the project Total: * investment of 20 billion yuan, plans to vote by the end of 2005, Bayer lime production process of a pipeline of high-temperature dissolution and new technology, the use of high temperature and enhanced dissolution. *: efficient separation of red mud washing, sandy alumina production, suspension roasting,air jordans, falling film evaporation, vertical leaf filter machine, large mechanical agitation tank and other advanced technology decomposition and efficient: * equipment. project is completed, Henan Branch of China Aluminum will increase 70 million tons of alumina, alumina production scale 200 million tons, one of the world.: class of large alumina production enterprises.: * [Ru Xiao Jie feed] �� 100 �� * * _ * ... * _ * * * * one by one - * A �� ._._.. 1-._-. a ._...... .... a. ��

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