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一般来说,铸造用砂不能再使用,这是因为砂中含有有机粘结剂及催化剂等有毒的残留物质,在水中有滤出污染环境的危险。德国NeuSechage工业公司已经开发了一套在液化层进行天然气燃烧的砂翻新系统。通过使用这一工艺,铸造厂可以像使用新砂一样重复多次再使用经过处理的砂。翻新工艺是根据已用过的砂调整促使其添加树脂分解以及基本成分的氧化物生成水蒸气及二氧化碳的热处理进行的。这一设施是由NEU开发的。NEU是一家为化学工业及农业-食品工业处理颗粒或粉末产品以及在污染废料处理方面具有相当专业水平的公司。该工厂翻新的砂达到与干净全新砂相称性能的水平,利用率达到95％。对废气也进行处理以杜绝将污
In general, foundry sand can no longer be used because the sand contains toxic residues such as organic binders and catalysts and can filter out the danger of contaminating the environment in the water. NeuSechage Industries, Germany, has developed a sand refurbishment system for the combustion of natural gas in the liquefied layer. By using this process, the foundry can reuse the treated sand multiple times as if using fresh sand. Refurbishment process is based on the sand has been used to adjust to promote its decomposition of the resin and the basic components of the oxide-forming steam and carbon dioxide heat treatment carried out. This facility was developed by NEU. NEU is a company that processes granular or powder products for the chemical industry and the agro-food industry and has considerable expertise in the treatment of polluting waste. The factory’s refurbished sand achieves comparable levels of performance to the clean new sand with up to 95% utilization. The exhaust gas is also treated to eliminate it