一种铝硅质大修渣的加速溶解处理方法
By ball milling and high-temperature residual electrode activation of aluminosilicate overhaul slag, combined with the synergistic effect of modified molten salt and cryolite-based electrolyte, the crystal lattice is destroyed and fluorides are released, solving the problem of slow dissolution rate of aluminosilicate overhaul slag, achieving efficient dissolution and high-silicon alloy production, and improving the stability of the electrolytic cell and waste heat utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHONGBEI UNIV
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, aluminum-silicon overhaul slag dissolves slowly in cryolite-based electrolytes, leading to a decrease in the concentration of metal oxides in the electrolyte, frequent occurrence of anodic effects, increased cell voltage, reduced current efficiency, and ineffective utilization of high-temperature residual heat, making it difficult to produce high-silicon alloys.
By pulverizing aluminosilicate overhaul slag using a ball mill and combining it with high-temperature residual electrode activation, the synergistic effect of modified molten salt and modified cryolite-based electrolyte is utilized to disrupt the dense crystal lattice, release internal fluorides, and generate easily soluble phases. Combined with mechanical activation and residual heat activation, the aluminosilicate overhaul slag is dissolved more quickly.
It significantly improves the dissolution rate of aluminum-silicon overhaul slag, produces high-silicon aluminum-silicon alloys with Si content of 4-15%, solves the problems of dissolution lag and furnace bottom sediment accumulation, realizes efficient utilization of residual heat, and maintains the stability of the electrolyte system.
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Figure CN122214984B_ABST