Concentration and impurity removal device for salt lake adsorption and desorption qualified liquid

• Main Authors: ZHANG CUN, LIU XIANPEI, SHI XINGPING, YUAN ZHIZHONG, LIU BINGBING, ZHANG ZHANLIANG, GAO JIANNENG, XIE ANFU
• Format: Patent
• Language: Chinese; English
• Published: 17.03.2023
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model discloses a concentration and impurity removal device for salt lake adsorption and desorption qualified liquid. Comprising an analysis qualified liquid storage tank, a first-stage reverse osmosis membrane system, a first-stage nanofiltration membrane system, a high-pressure reverse osmosis membrane system, a second-stage nanofiltration membrane system, a third-stage nanofiltration membrane system, a third-stage nanofiltration water production tank, a fourth-stage dialysis nanofiltration system, a second-stage reverse osmosis membrane system, a concentrated water tank and a desalted water storage tank. According to the utility model, the reverse osmosis membrane and the nanofiltration membrane are combined in a crossed manner by utilizing different performances of the membranes, so that the qualified salt lake analysis liquid can be concentrated, and calcium and magnesium can be removed. By means of the cross combination mode, lithium ions can be concentrated to the required concentration, th