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用磁选法分离四川石棉矿石中夹杂物及其它围岩,主要目的是分离混入矿石中的碎木、竹片、导火线等夹杂物(以下简称夹杂物)。石棉产品中的夹杂物严重地影响着石棉制品、石棉水泥制品的内在和外观质量,甚至使之造成废品。例如:石棉橡胶板中的夹杂物会影响密封效果;石棉纺织制品中的夹杂物会增加断头率和烧失量;石棉纸中的夹杂物会降低绝缘性能;石棉水泥瓦中的夹杂物会导致起层,降低强度和防冻性能。我国石棉矿山为减少石棉产品中的夹杂物,除在采矿时加强管理外,往往进行人工手选。很多石棉制品厂为清除夹杂物,还不得不进行多道工序选别,其中亦包括人工手选。各矿
Magnetic separation method is used to separate inclusions and other surrounding rock from the asbestos ore in Sichuan. The main purpose is to separate the inclusions (broken inclusions), such as broken wood, bamboo pieces and fuse, mixed into the ore. Inclusions in asbestos products seriously affect the inherent and appearance quality of asbestos products, asbestos cement products, and even make it waste products. For example: Asbestos rubber sheet inclusions will affect the sealing effect; asbestos textile products inclusions will increase the breakage rate and loss on ignition; asbestos paper inclusions will reduce the insulation properties; asbestos cement tile inclusions will Lead to the floor, reduce the strength and antifreeze performance. Asbestos mines in China to reduce the inclusion of asbestos products, in addition to strengthening the management of mining, the often manual selection. Many asbestos products factories have also had to carry out multi-process sorting to remove inclusions, including manual selection. Mine