Treatment method for scrap-shaped high-temperature alloy return scraps

• Main Authors: LI HUABING, MA LIEDONG, XIONG LANLAN, DONG HONGZHI, LI YAFENG, XU JINTAO, PU YILONG, WANG BO, LI SHUPING
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; DISPOSAL OF SOLID WASTE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

The invention provides a treatment method for scrap-shaped high-temperature alloy return scraps. The treatment method comprises the following steps of S1, sorting; S2, crushing; S3, alkali washing; S4, washing with a washing assisting solution; S5, acid pickling; S6, washing with water; and S7, drying. According to the treatment method in the embodiment, non-metallic inclusions on the surfaces of the scrap-shaped high-temperature alloy return scraps can be effectively removed, the scum content of the high-temperature alloy return scraps is reduced, the treated high-temperature alloy return scraps are smelted, the inclusion content of a smelted mother alloy is 0.5 level, and the scum content is within 2%; and oil stains on the surfaces of the scrap-shaped high-temperature alloy return scraps can be effectively removed, the residual carbon content range is within 100 ppm, after the high-temperature alloy return scraps treated through the treatment method are smelted, the mother alloy basically reaches the brand