Research on New Site Selection and Waste Sand Regeneration Coated Sand Production Strategy Based on Tianjin Casting Industry Pattern and LCA

DOI: https://doi.org/10.62517/jse.202611401

Author(s)

Xiaojing Xu1, Zhaoguo Zhang2,*, Zehao Zhou1, Wei Li3, Junna Liu1

Affiliation(s)

1Tianjin Songshan Environmental Technology Co., Ltd. Tianjin, China 2Dingguan (Tianjin) Management Consulting Co., Ltd. Tianjin, China 3Tianjin Qingchuan New Energy Development Co., Ltd. Tianjin, China *Corresponding Author

Abstract

Aiming at the problems of low resource utilization rate of waste sand in the foundry industry in the Beijing-Tianjin-Hebei region, unstable supply of coated sand raw materials, and lack of scientific basis for integrated project site selection, this study takes Tianjin as the research area. Through field investigation, life cycle assessment (LCA), analytic hierarchy process (AHP), and fuzzy comprehensive evaluation, the spatial distribution of foundry enterprises, waste sand generation characteristics, and coated sand market demand are analyzed. A four-dimensional multi-objective site optimization model considering environment, resources, economy, and society is constructed. Combined with typical enterprise engineering practice, the technical feasibility and economic rationality of the integrated layout of waste sand regeneration and coated sand production are verified. The results show that: the annual generation of foundry waste sand in Tianjin is about 367,600 tons, with annual coated sand demand of 150,000 to 200,000 tons; Site B is optimal in terms of full life cycle environmental load, operating cost, and industrial synergy; the integrated layout adjacent to foundry clusters can significantly reduce logistics costs, stabilize regenerated sand quality, and improve resource recycling efficiency. This study provides engineering references for green transformation of the foundry industry, resource-based project site selection, and production strategy formulation.

Keywords

Foundry Waste Sand; Recycling Utilization; Coated Sand; Life Cycle Assessment; Site Selection; Circular Economy; Tianjin

References

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