很久以来,不只瑞典波立顿矿物公司,而且全世界许多矿业公司采出的矿石品位都在不断下降,而采出矿石量日益增加。因此,碎磨费用在总费用中占的比例在日趋提高。除此之外,能源价格以及与能源有关的费用,如磨矿介质、衬板和维修等费用也在日趋上涨,这些因素促使波立顿公司进行磨矿技术的改进。在五十年代,对砾磨进行了成功研究 For too long, not only the Swedish wave Lipton Minerals, but also the mining grade of many mining companies worldwide have been declining, and the amount of ore recovered is increasing. As a result, the share of crushing expenses in the total cost is increasing. In addition, energy prices and energy-related costs, such as grinding media, linings and repairs, are also on the rise, prompting the company to improve its grinding technology. In the fifties, successful research was conducted on gravel mills