Continuous ion exchange system for controlling solution loss of ion sieve lithium extraction adsorbent

• Main Authors: ZHANG KELUN, CHEN XUEXIN, XU XIAOYANG, GAO JIANNENG, WANG BINGHUANG, XIE HONGZHEN, WANG QIANKUN, JI CHANGQING, LEI FOGUANG, LI JIANCHANG
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses a continuous ion exchange system for controlling the solution loss of an ion sieve extraction lithium adsorbent, which comprises 30 resin columns, matched pipelines and storage tanks, and each resin column is sequentially provided with an adsorption area, a washing material impurity removal area, a desorption area and a washing acid area. By utilizing the lithium extraction adsorbent desorption device, the lithium extraction adsorbent can be desorbed in a multi-stage and segmented manner, and in combination with on-line acid supplementation, the acid concentration of the desorption liquid can be maintained at a lower level by opening the desorption liquid through one resin column in the desorption area and removing impurities in advance through the washing material impurity removal area arranged in front of the desorption area, so that the lithium extraction adsorbent can be desorbed in a multi-stage and segmented manner. Therefore, the solution loss of the titanium adsorbent can b