摘要
以贝壳为原料,采用一次煅烧法制备了柠檬酸钙,并利用正交实验对制备条件进行了研究.结果表明:在10 mL质量浓度为0.20 g.mL-1柠檬酸中,加入1.0 g煅烧后的贝壳粉,于60℃条件下中和反应,所得产品的产率为94.04%,纯度为99.29%,产品经红外和质量检测,基本符合我国钙添加剂的质量要求.
Using one-step calcinations methods,the preparation process of citric acid calcium with shell as raw material was studied.Orthogonal test showed that the best preparation conditions were as follows： adding1.0g shell ash into 10mL 0.20 g/mL citric acid at the reaction temperature 60 ℃,under which the yield and the purity of calcium citric were 94.04% and 99.29%,respectively,IR analysis and quality evaluation of the product showed that the quality of the product was in accordance with the criterions of Chinese regulations for calcium additives.
出处
《湛江师范学院学报》
2010年第6期95-98,共4页
Journal of Zhanjiang Normal College
关键词
贝壳
煅烧
柠檬酸钙
正交实验
shells
calcination
calcium citric
orthogonal test
