Ca2+-CO32--H2O体系超纯碳酸钙制备研究
本毕业论文采用Ca2+-CO32--H2O体系制备碳酸钙，大大强化碳酸钙生产过程中的传质过程，通过水洗，过量，灼烧等方法去除碳酸钙中的杂质，取得更为纯净的碳酸钙产品。本论文的主要任务是要完成碳酸钙制备研究、利用制得的碳酸钙，通过水洗，过量，灼烧等方法尽量去除碳酸钙中的杂质，再测定其中碳酸钙，杂质的含量。并且通过不断尝试寻找出最优质的洗涤方法，为研究成果的推广应用与工艺参数优化提供依据。19848
关键词：碳酸钙；水洗；钙含量
Preparation of super pure calcium carbonate in Ca2+-CO32--H2O
Abstract:Calcium carbonate (CaCO3) is a kind of inorganic compounds, basically does not dissolve in water, but it can soluble in acid.Are widespread in the earth, in the aragonite and calcite, chalk, limestone, rock inside contain the material, also is the main component of animal bone or shell.Calcium carbonate is also important building material, in industry application is very wide, is a kind of high added value and good economic benefits and application range of products.
This paper adopts the Ca2 + - CO32 - H2O system of preparation of calcium carbonate, greatly strengthen the mass transfer process in the process of calcium carbonate production, through the water, excessive, calcination etc method to remove the impurity in the carbonate, get a more pure calcium carbonate products.The main task of this thesis is to complete the preparation research, the use of calcium carbonate, calcium carbonate by washing, excessive, burning method to remove the impurity in the calcium carbonate, and determination of calcium carbonate, the content of impurities.And by constantly trying to find out the best method of washing for extension and application of research results provide a basis and process parameters optimization.
Key words: calcium carbonate;Washed;The calcium content
目 录
1 绪论1
1.1 开题依据1
1.2 碳酸钙的物理化学性质1
1.2.1 物理性质.1
1.2.2 化学性质.2
1.3 碳酸钙的现阶段状况3
1.4 按不同方式对碳酸钙进行分类4
1.4.1 根据生产方法分类4
1.4.2 根据粉体粒径分类6
1.4.3 根据观排列分类.6
1.5 碳酸钙在不同领域中的应用7
1.6 碳酸钙的分布情况及四大生产基地..9
1.7 碳酸钙不同反应系统中的合成方法..9
1.7.1 Ca2+-H2O-CO32-反应系统 .10
1.7.2 Ca(OH)2—H2O—CO2反应系统.11
1.7.3 Ca2+—R—CO32-反应系统..12
1.8 碳酸钙的生成动力学12
2 实验部分.13
2.1 瓶装碳酸钙样品的分析方法.13
2.3.1 Ca2+含量的测定13
2.3.2 Mg2+含量的测定13
2.3.3 水含量的测定13
2.2 不同方法实验室制备碳酸钙13
2.3 碳酸钙洗涤方法的研究14
2.4 实验原料及所需仪器设备14
2.4.1 原料..14
2.4.2 仪器设备.14
2.4.3 试剂..14
3 实验结果与讨论15
3.1 瓶装碳酸钙样品分析方法.. 15
3.1.1 Ca2+含量的测定15
3.1.2 Mg2+含量的测定.15
3.1.3 水含量的测定.16
3.2 不同方法实验室制备碳酸钙16
3.2.1 按方程式比例制备碳酸钙16
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