Experimental Study on Ceramic Raw Material Preparation with Coarse-grained Gold Tailings and Cemented Filling with Fine-grained Gold Tailings
This study investigates the utilization of gold tailings as raw materials through a process involving classification and magnetic separation.The specific approach involves"coarse-fine classification—coarse particle preparation for ceramic raw materials,fine particle filling."The results demonstrate that effective classification can be achieved using a Φ150mm cyclone with a feed concentration of 28.28%,resulting in an underflow with+325 mesh content of 92.83%and an overflow with-325 mesh content of 96.09%.After undergoing a two-stage magnetic separation process(weak magnetic separation followed by strong magnetic separation),the underflow yields feldspar-quartz product with a whiteness of 59.09%,iron oxide content of 0.15%,and a recovery rate of 58.98%.This process effectively improves the quality,removes iron impurities,and enhances the whiteness of the product,meeting the industry standards for ceramic porcelain.Regarding the overflow material,a slurry concentration of 65%or higher and a cement-sand ratio of 1:10 can meet the requirements for cemented filling,achieving a compressive strength of 1 MPa after 28 days.The findings of this research can guide the resource utilization of gold tailings.
gold tailingscoarse and fine classificationceramic raw materialsfine particle fillingresource utilization
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