Stepped drying process for micro-powder material processing

• Main Author: MA HAOJUN
• Format: Patent
• Language: Chinese; English
• Published: 25.11.2022
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a stepped drying process for micro-powder material processing, and particularly relates to the technical field of micro-powder materials. According to the method, lime is continuously added into the sodium aluminate solution twice, so that continuous desilicication treatment twice is realized, and the purification treatment degree of the sodium aluminate solution can be effectively enhanced; the decomposition liquid is added into the filtrate, so that the solventing-out decomposition rate of the sodium aluminate solution can be effectively increased, the output rate of the sodium aluminate is further effectively increased, and the subsequent output effect and purity of aluminum oxide are facilitated; the mixed material A is subjected to centrifugal treatment, washing treatment after supernate is removed, then stepped drying treatment is performed, solid-liquid separation treatment can be effectively performed on the mixed material A, then washing and drying treatment is performed on th