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三年多来,我们用土简办法,反复淘洗了两千多吨粘土旧砂代替新砂使用,解决了生产矛盾,满足了质量要求,每年节省一万五千多元。过去,由于在型砂中不断补充新砂的结果,造型地不断升高,吊车离地面越来越矮,行动不便,通风采光条件变劣,影响生产效率和安全,因而每到一定时间,就得挖低场地,倾倒型砂、填鱼塘,劳民伤财,影响工农业生产。为了减少新砂比例,我们加强了旧砂的干法再生回用,但问题没有彻底解决。
In the past three years or so, we have used the simplified method to repeatedly wash over 2,000 tons of old sand instead of fresh sand to solve production contradictions and meet the quality requirements, saving more than 15,000 yuan each year. In the past, due to the continuous addition of new sand in the sand as a result of modeling continue to rise, the crane from the ground getting shorter and shorter, mobility, deterioration of ventilation and lighting conditions, affecting the production efficiency and safety, so every time, you have to dig Low-lying, dumping sand, fish ponds, waste of money, affecting industrial and agricultural production. In order to reduce the proportion of new sand, we have strengthened the dry sand recycling, but the problem has not been completely solved.