Bentonite is the production of raw materials of organic montmorillonite, but in the production process need after purification, sodium, change, modification etc. a series of process system, so as to prepared the excellent performance of the sodium montmorillonite. There are two different production processes in the preparation of montmorillonite, that is, two kinds of suspension and mechanical force chemical method.
In the suspension method, seven kinds of organic ammonium salts were modified by sodium montmorillonite. The study of the effects of organic modifier dosage, modification time, modification temperature and other parameters on the structure and property of products, according to the related data to optimize production process of suspension method, and a large number of experiments, such as the use of X-ray diffraction, infrared spectroscopy, poor thermal analysis and scanning electron microscope (SEM) and the products were characterized, analyzed the organic montmorillonite structure change and the rule.
Experimental results show that the hydraulic cyclone separators are purified bentonite can get a particle size of less than 10 microns of montmorillonite, the purification efficiency is greatly improved; montmorillonite was sodium modification by sodium carbonate, preparation of layer spacing for 12.4754A sodium montmorillonite to prepare the machine of montmorillonite. Organic modification of process parameters such as kinds of organic modifier, organic modifier agent dosage, modification time, modification temperature are of organic montmorillonite properties and structure have different degrees of influence through analysis of experimental data, to determine the best modifier and process conditions.
And the mechanical force chemical change process can also be prepared by organic Montmorillonites with different structure, after numerous experiments. The results show that small trial of the proposed process parameters is feasible. For large-scale production of organic montmorillonite with excellent properties can be prepared. (Reference: Shandong University of Science and Technology thesis)