Linli County, Hunan Province, The White Soil Slopes Bentonite Mineralogical Characteristics And Suitability Of The Product Trial

Bentonite is an important nonmetallic mineral resource. It has been applied nearly in all the domains of human being's production and living due to its special framework and performance. The exploitation, research and application of bentonite have attracted great attention among many popular themes in material research nowadays. In this thesis, the mineralogical characters of bentonite in Baitupo, Linli county of Hunan Province is studied systemically and roundly by using modern material testing and analyzing techniques, on the basis of integrated analysis of the research, application and market of bentonite inside and outside our country. And the preparation of several choosing products is studied according to its mineralogical characters. The main contents in this thesis are as follows.The physical and chemic characters of the bentonite in Baitupo, especially the chemic compositions and crystal-chemic characters of montmorillonite-the main mineral components in bentonite is studied rather detailed in this thesis based on the analysis of earlier studies. By the means of SEM, XRD, IR and TDA analysis, the mineralogical characters of bentonite in Baitupo are opened out more roundly by us.The purification of the bentonite in Baitupo is carried through after its mineralogical characters had been fully understood. Purified bentonite, which is suitable in most domains, has been gotten. For the purpose of obtaining even more purified bentonite, a new technique is put forward in a creative way: First, the bentonite is dispersed by the means of Na-improved treatment; Then the slurry is diluted for getting rid of atomic quartz. Not only the contents of montmorillonite in purified bentonite are enhanced, but also the straight materials for the following organizing treatment are prepared by this new way. And the process of Na-improvement, which is needed in most preparation of organobentonite, is overleaped.The preparation of metallurgic agglomerant bentonite, drilling mud bentonite and special type organobentonite is studied in laboratory withthe bentonite of Baitupo. The study include the determination of technical flows and parameters, the test of partial capabilities and characters of the products by certain testing techniques and the contracted analysis of the volume-produce feasibility of these products. The technical flows and parameters in preparation of lipin-decolor atlapulgite by the bentonite of Baitupo are groped. The factors (include ratio of Si and Al, high content of Fe etc), which have great influences on acid consume and decolor capacitance, are discussed. Some valuable suggests are brought forward according to the above discussions.