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对动物蛋白质型芯砂的各种再生回用方法和再生破性能进行了试验研究，得出该砂最适宜的再生方法和最佳再生工艺，并用再生砂作为“新砂”成功地制造出砂型和优质铸件。
The various methods of regeneration and reuse of animal proteinaceous core sand were studied, and the most suitable regeneration method and the best regeneration technology were obtained. And the sand and the regenerated sand were successfully used as the “new sand” High-quality castings.