Production device and production process for extracting lithium from brine through efficient adsorption method

Abstract

The invention aims to provide a production device and a production process for extracting lithium from brine by an efficient adsorption method. The production device comprises an old brine dilution tank, a primary adsorption tower, a primary deep magnesium removal tower, a secondary deep magnesium removal tower, a secondary magnesium removal leacheate storage tank, a reverse osmosis device, an evaporation device, a primary filtering device, a precise filtering device, a lithium precipitation reaction kettle, a centrifugal machine, a concentration airing pool, a countercurrent washing tower, a filter and a dryer. The method solves the problems that the domestic lithium carbonate production depends on a large amount of lithium ores, the brine lithium salt capacity cannot be completely released, and a large amount of resources are wasted. The efficient ion exchange adsorbent adopted by the invention has very high selectivity to lithium salt, high recovery rate and high product purity, and the adsorbent is simple in preparation method, renewable, low in price and suitable for large-scale operation and use. And the reaction process is normal pressure and normal temperature, so that the risk in the production process is small, and the method is a green production process.

Description

technical field [0001] The invention relates to a production device and a production process for extracting lithium from brine by an efficient adsorption method, and belongs to the technical field of lithium extraction by an adsorption method. Background technique [0002] Lithium (Li) is the "elemental star" of the 21st century, known as "industrial MSG" or "energy metal". Lithium metal and its alloys and compounds have been used in light-weight high-strength alloys, metallurgy, aluminum smelting, high-energy batteries, pharmaceutical glass, ceramics, grease, petroleum, chemical industry, organic synthesis, light metal welding, non-metallic mineral surface modification, daily necessities. It has been widely used in many fields such as nuclear power generation. The largest consumer market for lithium carbonate is lithium battery applications in new energy technologies, additives and fluxes in glass manufacturing and ceramic production, etc. Driven by the strong growth of th...

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Problems solved by technology

However, there is currently no process for extracting lithium from brine by adsorption.

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