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of sodium hydrate alumino-silicate (260 ℃, 1.5 h) 2.2 实验方法 2.2.1 钠硅渣石灰烧结 按不同的配钙比,称取一定质量的钠硅渣,碳酸钙放入混料瓶中,并在对辊式多功能矿物混料机(长沙索拓科学仪器设备有限公司)上将其混合均匀制备成生料；称取混匀后的生料放入刚玉坩埚内,盖上坩埚盖,置于已预热至烧结温度的高温箱式电阻炉...: Metallurgical Industry Press, 1993: 281-296. [8] 张亚莉. 钠硅渣湿法处理工艺与理论研究[D]. 长沙: 中南大学, 2003: 2-16. ZHANG Ya-li. Research on hydro-treatment technology and theory of sodium hydrate alumino-silicate[D].Changsha......
, the loss of soda is mainly caused by the formation of sodium hydrate alumino-silicate. Based on the thermodynamic analysis of the reaction law between sodium hydrate alumino-silicate and hydrogarnet, it is found that hydrogarnet with more amount of SiO2 (x>1) can not be decomposed by caustic solution easily, while hydrogarnet with x<0.5 can be decomposed into sodium hydrate alumino-silicate......
sodium alumino-silicate hydrate (DSP) under mild condition was put forward[7, 8]. Moreover, in sintering process of alumina production, the secondary loss of alumina and soda is actually caused...; meanwhile the Al(OH)-4 concentration in aluminate solution affects those remarkably through the formation of hydro-garnet and sodium alumino-silicate hydrate. 3) Al(OH)-4 contributes more......
of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: At the molar ratio of CaO to SiO2 of 1, with calcium hydroxide and sodium silicate, calcium silicate hydrate.... So the synthesis temperature and soda concentration should be controlled in the process of transformation of sodium aluminosilicate hydrate into calcium silicate hydrate. Key words: calcium silicate......
, but also improves the Moh’s hardness of the scale. Because the hydrophilicities of sodium hydrate alumino-silicate, hydrogarnet and hematite are greater than that of calcium titanate, increasing temperature... method to inhibit the formation of the scale. Key words: scale; preheating pipe; surface property; sodium hydrate alumino-silicate; calcium titanate; hydrogarnet; organic additive Foundation item: Project......
sodium aluminate) enters into the red mud in the form of sodium hydrate alumino-silicate (DSP) and hydrogarnet (or β dicalcium silicate). But there remains 1-8 g/L SiO2 in the sodium aluminate solutions... Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: The structural changes of silicate anions in the desilication process with the addition of calcium hydrate alumino-carbonate were studied......
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. The sodium aluminosilicate hydrate is one of the main phases of the slags produced from high temperature desilication process with either MgO or mixture of MgO and CaO as desilication agent, which agrees with the result of thermodynamic calculation. Key words: magnesium oxide; sodium aluminate; lime; desilication; sodium aluminosilicate hydrate 在氧化铝生产过程中,氧化钙,氧化镁及镁盐是铝酸钠溶液净化中常用的添加剂[1-2].氧化镁对溶液 中的有机物具有较好......
from supersaturated sodium aluminate solutions. As for the calcinations of the intermediate hydrate to alumina, AlOOH dehydrates to alumina requiring only 72 kJ/mol Al2O3 produced, in contrast to Al... of boehmite content with temperature needs to be further investigated in our next study. 3.1.3 Ethanol medium for caustic extraction function Alumina hydrate was prepared from supersaturated sodium aluminate......
