Preparation and characterization of glass ceramics synthesized from lead slag and lead-zinc tailings. Issue 10 (15th May 2023)

• Record Type: Journal Article
• Authors: Zhang, Xiaoguang; Li, Lili; Hassan, Qadeer Ul; Pan, Dean; Zhu, Gangqiang
• Is Part Of: Ceramics international. Volume 49:Issue 10(2023)
• Page Start: 16164
• Page End: 16173
• Publication Date: 2023-05-15
• Subjects: Lead slag -- Lead-zinc tailings -- Borax -- Glass-ceramics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2023.01.214
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Using lead slag and lead-zinc tailings to prepare high-value glass-ceramic can realize the comprehensive utilization of solid waste and reduce the environmental pollution caused by lead slag landfill. Firstly, lead-zinc tailings and borax are used to melt and temper lead slag to improve its sintering performance. At 1450 °C, the lead slag melted and tempered by adding 40% lead-zinc tailings and 4% borax has good fluidity in the molten state. In water quenching, crystallization is not easy, and the water quenching slag has good sintering performance. Then, the water-quenched slag obtained by melting and tempering lead slag with lead-zinc tailings and borax was ball-milled and mixed with 10% albite feldspar and sintered at 1050 °C for 90 min to prepare glass ceramics. The prepared glass-ceramics have excellent performance parameters such as bulk density of 2.79 g/cm 3, water absorption of 0.05%, the flexural strength of 102.18 MPa, acid resistance of 0.15%, and alkali resistance of 0.032%. Simultaneously, the glass ceramics exhibited excellent resistance to the leaching of heavy metals where the leaching concentrations of Pb, Zn, As, and Cd were 0.125, 1.268, 0.324, and 0.029 mg/L, respectively. This research can provide a new idea for comprehensively utilizing solid waste.