Comprehensive recycling process for zinc-indium-containing gypsum slag

• Main Authors: ZHU BEIPING, WANG LIFEI, WANG BANGWEI, YANG ZHENGBING, AN KANGFA, WANG JINLIANG, ZHANG GUOHUA
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a zinc-indium-containing gypsum slag comprehensive recycling process which comprises the following steps: S1, washing zinc-indium-containing gypsum slag with a washing solution to obtain washed gypsum slag and the washing solution; s2, a neutralizing agent is added into the washing liquid, and neutralized indium precipitation residues and neutralized indium precipitation liquid are obtained; s3, drying the washed gypsum residues to obtain a gypsum powder filler; s4, mixing and uniformly stirring the gypsum powder filler, the fine aggregate, the coarse aggregate, the self-luminous material, the cement and the water in parts by weight, and filling a mold with the mixture to prepare a kerb blank; and S5, the kerb blank is put into a belt type sintering machine to be sintered, and the kerb with the good light-emitting performance is obtained. On the basis that zinc and indium are recycled through acid pickling, neutralization and sediment, the light-emitting curb is manufactured through th