The competitiveness of building material recycling products still continues to be impeded by unduly high production costs and insufficient quality. The impact crusher which, according to a unanimous agreement of manufacturers and - operators surveyed - will also remain the generally preferred crushing equipment for building material recycling in future, will have to be adjusted to the demands of an actual recycling - not downcycling. After single-piece tests with concrete balls in an impact crusher (500 x 500), the effect of several process and mechanical parameters of the crusher on the energy consumption of crushing as well as on particle size distribution and the degree of liberation of the crusher product was analysed. To minimise the excessive wear at the baffle plates during crushing of building rubble, an impact wear test unit was used to determine the wear behaviour of various raw materials when subjected to impact stress.
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机译：过高的生产成本和不足的质量仍然阻碍了建筑材料回收产品的竞争力。根据制造商和接受调查的运营商的一致同意，反击式破碎机将来仍将是通常首选的建筑材料回收破碎设备，必须根据实际回收要求进行调整，而不是向下回收。在冲击式破碎机（500 x 500）中用混凝土球进行单件测试后，破碎机的多个过程和机械参数对破碎的能耗以及粒度分布和破碎机的自由度的影响产品进行了分析。为了最大程度地减少碎石瓦砾在挡板处的过度磨损，使用了一个冲击磨损测试装置来确定各种原材料在受到冲击应力时的磨损行为。
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