论文部分内容阅读
C)特别重视旧砂回收再生和再生砂质量。这个工场旧砂全部回收再生使用,利用率高达95％基本上消除了废砂,废弃物只是集尘器收集的约5％的粉尘。过去在老厂月产铸件1100吨,每月要排放废砂600吨:现在新厂月产铸件1500吨,只补充150吨砂新,平均每吨铸件新砂耗量为150公斤。按照日本一般铸造厂的介绍,旧砂回收再生加工处理的费用,每吨4000日元左右,约为日本新砂价格的一半,充分使再生砂,可以节约新砂资源和降低型砂成本,有很大经济效益。充分使用再生砂除了降低新砂用量以外还出于降低树脂用量的考虑,旧砂经过反复回收,再生加工处理,与新砂比较,表面渐趋园
C) Pay special attention to the quality of recovered and regenerated sand and recycled sand. All the old sand in this workshop is recycled and reused. Up to 95% utilization basically eliminates the waste sand, which is only about 5% of the dust collected by the dust collector. In the past, the company produced 1,100 tons of castings per month and discharged 600 tons of waste sand per month. Now, the new plant produces 1,500 tons of castings per month and only adds 150 tons of sand new, with an average consumption of 150 kg of new sand per ton of castings. According to the general foundry in Japan, the cost of recycling and processing of used sand is about 4000 yen per ton, about half the price of Japan’s new sand. Making full use of recycled sand can save new sand resources and reduce the cost of sand, which has great economy benefit. Full use of recycled sand In addition to reducing the amount of fresh sand but also for reducing the amount of resin considerations, the old sand after repeated recovery, regeneration processing, compared with the new sand, the surface gradually garden