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许多高品位的工业矿床正在迅速枯竭,为满足工业上各种用途的要求必须分选低品位矿床。在许多情况下,铁和钛矿物杂质是主要污染杂质。高提取磁过滤(HEMF)则可以从工业尾矿和矿物如球粘土、铝土矿、膨润土、高硅砂、高岭土、兰晶石、滑石、硅藻土和硅灰石中除去磁性和顺磁性矿物。以上矿物所提供的资料表明,除去含铁矿物和含钛矿物能使其中每一种矿物的品位再提高。例如:阿肯色州(Arkansas)铝土矿的含铁量可以从7.92%降低为0.86%,一种得克萨斯(Texas)白色膨润土的光泽度可从82.5%提高到93 0%,HEMF作为一种选矿方法,它可用来提高许多工业矿物的储量或生产高质量的产品。本方法包括在稀矿浆流过一个磁性介质过滤器时,允许其中的非磁性颗粒通过,同时有选择性的过滤出磁性或顺磁性矿物颗粒。
Many high-grade industrial deposits are rapidly depleting and low-grade deposits must be sorted to meet the needs of various industrial uses. In many cases, iron and titanium mineral impurities are the major contaminant impurities. High extraction magnetic filtration (HEMF) removes magnetic and paramagnetic minerals from industrial tailings and minerals such as ball clay, bauxite, bentonite, high silica sand, kaolin, spinel, talc, diatomaceous earth and wollastonite. The information provided by the above minerals shows that the removal of iron-bearing minerals and titanium-bearing minerals can further increase the grade of each of these minerals. For example, the iron content of bauxite in Arkansas can be reduced from 7.92% to 0.86%, the whiteness of one Texas white bentonite can be increased from 82.5% to 93 0%, and HEMF can be used as a beneficiation method , Which can be used to increase the reserves of many industrial minerals or to produce high-quality products. The method includes allowing non-magnetic particles to pass therethrough while the dilute slurry passes through a magnetic media filter while selectively filtering magnetic or paramagnetic mineral particles.