我矿钨矿石精选作业中粗级别(-20+100目)磁选尾矿一直沿用抬浮脱铜;人工粒浮槽分离白钨和锡石。人工粒浮劳动强度大、生产效率低。在批林批孔运动的推动下,在群众性技术革新运动中,我矿在学习广州冶炼厂的经验基础上,试制成功园筒粒浮机,于去年五月投产,一年多来,设备运转正常、指标稳定,劳动力节约40%,劳动条件大大改善,因而深受工人群众欢迎。(一)构造和选别原理该机园筒用松木制成,规格为φ1000×2000厘米,置于水平托辊上,筒的内壁钉有高30～35厘米、间距80～100厘米螺旋形橡皮条,给矿端出口比排矿端出口低10厘米,便于上浮物溢出,筒的纵向装有喷水管(见附图)。其转动装置,可由天轴、离合卡等带动数个园筒,园筒转速为3转/分,每台处理量粗选扫选时为80～100公斤/台时,精选时为100～120公斤/台时。园筒粒浮是利用 Tungsten ore mine in my selection of coarse-grained level (-20 +100 mesh) magnetic separation tailings have been used to lift the floatation of copper; artificial particle float separation of scheelite and cassiterite. Artificial floating labor-intensive, low productivity. In the pro-Lin Pok campaign, in the masses of technological innovation movement, mine mine in Guangzhou based on the experience of smelters, trial production of cylindrical grain floating machine, put into operation last May, more than a year, equipment Normal operation, stable targets, 40% labor savings, greatly improved working conditions, and therefore welcomed by the workers. (A) the principle of construction and sorting The machine is made of pine garden, specifications for φ1000 × 2000 cm, placed on the horizontal roller, the inner wall of the nail nail high 30 to 35 cm, spacing 80 to 100 cm spiral rubber Article, export to the mine end than the discharge side of 10 cm, easy to overflow on the float, the tube is equipped with a vertical tube (see photo). The rotation device, which can be driven by a shaft, a clutch card and the like, has a number of cylinders of 3 rotations / min and a capacity of 80-100 kg / 120 kg / Taiwan time. Cylinder float is the use