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六十年代市场上出现大型浮选机,这是世界倾向使用大型化设备的一个部分。大型浮选机对浮选厂的出现和规划有着革命性的影响。浮选机的台数及其占地面积都大为减少。奥托昆普公司所研制的OK-16型充气机械搅拌浮选机的槽容积为16米~3(600英尺~3)。它的搅拌机构完全为新型的。它是以新研究的理论,即搅拌弥散大量空气要与最大浮选槽相协调为基础的。在已知的搅拌机构中,空气是从搅拌机构上部附近的较窄区域逸出并弥散。大量空气要弥散就需先有一个大的有效的弥散表面,使空气与矿浆以适当的比例排出空气和矿浆。借助平衡转子表面适当部分的矿浆压力,得到一个大的弥散表面。以流动矿浆的动压力,补偿因深度而增大的流体静压力,可做到这一点。把在3米~3(100英尺~3)浮选槽中研制成的搅拌机构,根据研制成功的浮选槽按比例放大的理论,放大用于16米~3(600英尺~3)的浮选槽。按比例放大的理论始于物理定律,其结果与实践相一致。目前,奥托昆普公司所有各主要矿山选厂,都采用大型浮选机证明,对于较小的浮选机来说,是有很大的改进。基建投资和生产费用,特别是电力和维修费用都减少了,浮选结果也有改善。投资收回时间平均约为两年,同时,浮选过程的看管和自动控制也容易。
Large flotation machines appeared on the market in the 1960s and are part of the world’s tendency to use larger equipment. Large flotation machines have a revolutionary impact on the flotation plant’s emergence and planning. The number of flotation machines and their floor space are greatly reduced. Outokumpu developed OK-16 inflatable mechanical mixing flotation tank volume of 16 meters to 3 (600 feet to 3). Its mixing mechanism is completely new. It is based on the theory of new research, that is, mixing and dispersing large amounts of air with the largest flotation cell. In the known stirring mechanism, the air escapes and disperses from the narrower area near the upper portion of the stirring mechanism. A large amount of air to be dispersed on the need to have a large and effective dispersion of the surface, so that the air and pulp to the appropriate proportion of air and pulp discharge. By balancing the pressure on the appropriate part of the rotor surface, a large dispersion surface results. This can be done by using the dynamic pressure of the flowing slurry to compensate for the increased hydrostatic pressure due to depth. The mixing mechanism developed in the flotation cell of 3m ~ 3 (100ft ~ 3) is enlarged according to the theory of scaling up the flotation cell which has been successfully developed, Election slot. The theory of scaling up begins with the laws of physics, the result of which is consistent with practice. Currently, all major Outokumpu mines are using large flotation machines to prove that there is a big improvement for smaller flotation machines. Infrastructure investment and production costs, especially for electricity and maintenance, have been reduced and flotation results have also improved. The average investment recovery time is about two years. At the same time, the custody and automatic control of the flotation process is also easy.