Preparation method of powder type high-capacity titanium-based lithium ion exchanger

Abstract

The invention provides a preparation method of a powder type high-capacity titanium-based lithium ion exchanger, wherein the titanium source is metatitanic acid on a sulfuric acid process production line, and the precursor can be prepared at low lithium source consumption and short calcination time. The lithium ion elution process of a precursor comprises stirring and adding acid to remove lithiumin a tank, that concentration of slurry H+ in the tank is controlled to prevent the dissolution of titanium, the dissolved lithium is concentrated in a solution, the solid and liquid are separated toobtain a lithium solution with high concentration and low acidity, the concentration energy consumption is reduced and alkali for neutralizing waste acid is reduced, thereby greatly reducing production cost.

Description

technical field

[0001] The invention belongs to the field of preparation of inorganic non-metallic materials, in particular to a preparation method of a titanium series lithium ion exchanger. Background technique

[0002] Lithium and its compounds are important strategic materials for national economy and national defense construction, and are widely used in many fields such as glass, ceramics, aviation, nuclear energy and new energy. According to the annual report published by the United States Geological Survey (USGS) in January 2016, the world's proven reserves of onshore lithium resources in terms of metal lithium are about 14 million tons, of which reserves in salt lake brine Accounting for 70% to 80%; and the amount stored in seawater is about 260 billion tons. Therefore, in order to meet the needs of sustainable development, scholars from various countries are actively looking for new technologies for extracting lithium from salt lake brine and (concentrated) seawate...

Images