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1973年加拿大的矿产和金属产量继续增长。绝大部分是由于现有企业的改进和扩大。去年投产的新厂不多。生产率的提高不是由于在某一特殊领域有所突破,而是靠采用大型设备和通过操作方法和自动控制而使选矿厂取得最佳化条件的结果。破碎与磨矿加拿大安大略省的贝思西门拉发兹新水泥厂采用一种由哈茨马格工厂制造的用电力的移动式破碎装置。该装置是一台复合式的双转子破碎机,给料方向相同,由一台电铲和前端式装载机联合给料,小时处理700吨。
In 1973, Canada’s mineral and metal production continued to grow. The vast majority are due to the improvement and expansion of existing enterprises. There were not many new plants put into operation last year. Productivity gains are not due to breakthroughs in a particular area, but rather to the optimization of the concentrator by the use of large equipment and by operating methods and automatic controls. Crushing and Grinding The Bethsimen Lafayette New Cement Plant in Ontario, Canada, uses a powered mobile crusher manufactured by the Hartz Maggie factory. The unit is a compound twin-rotor shredder with the same feed direction and is fed by a shovel and front-loader, handling 700 tons per hour.