A comprehensive treatment method for lithium-containing glass waste

Abstract

This invention relates to a comprehensive treatment method for lithium-containing glass waste, comprising the following steps: pretreating the lithium-containing glass waste to be treated to obtain glass powder; mixing the glass powder with alkali, water, and a crystallizing agent to obtain a slurry; wherein the pH value of the slurry is 7.5-14.0; the crystallizing agent is a water-soluble alkali metal salt; pouring the slurry into a closed reaction vessel, heating, and pressure cooking, followed by solid-liquid separation to obtain a leachate and P-type zeolite; adjusting the pH value of the leachate to 0.5-4.0, adding seed crystals, cooling and crystallizing to obtain a purified liquid and boric acid crystals; subjecting the purified liquid to lithium precipitation treatment, followed by solid-liquid separation to obtain lithium salt products and lithium precipitation mother liquor. The entire process of this invention achieves comprehensive recycling of lithium-containing glass waste, effectively extracting high-value lithium and recovering valuable components such as Al, Si, and B from the glass with high added value, effectively improving the comprehensive treatment efficiency of glass waste and realizing the full utilization of lithium-containing glass waste.

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