旧砂再生的重大意义和效果“旧砂堆积高如山,逢年过节要人搬,既费力来又费钱,文明生产也困难”。这不仅是一个厂铸工车间的写照,而是国内外铸造生产中迫切需要解决的一个问题。一吨铸件需要0.5～1吨新砂来配制型砂,有的工人同志说:“一斤砂价值一斤大米”。说明节约砂子的重要性。旧砂再生是解决这个问题的唯一出路和办法,几年来本市自制再生设备、大搞旧砂再生的事实充分说明了这一点。从使用中体现了旧砂再生的效果。 (1)以再生砂代替大部分新砂,节约了运输力和资金。如内燃机厂,每月节约50吨新砂,每年节约600吨,每吨砂加上运费以18.85 Great Significance and Effect of Regeneration of Old Sands “Old sand piled up high as mountains. Every year, we need to relocate. It is not only laborious and costly, but also hard to produce in a civilized way.” This is not only a portrayal of a foundry workshop, but an urgent need to be solved in the foundry production at home and abroad. One ton of casting requires 0.5 to 1 ton of fresh sand to prepare the sand, and some workers said: “A pound of sand worth a pound of rice.” Explain the importance of saving sand. Regeneration of old sand is the only way to solve this problem. In the past few years, the fact that self-made regenerative equipment is used in this Municipality and vigorously promoted the regeneration of old sand fully illustrates this point. From the use of the old sand regeneration effect. (1) replace most of the new sand with recycled sand, saving transport capacity and funding. Such as internal combustion engine plant, saving 50 tons of new sand per month, saving 600 tons per year plus sand per ton of sand to 18.85