2results about "Iron compounds preparation" patented technology

The present disclosure provides a method for separating iron element in brine and application thereof. The method for separating iron element in brine comprises: adding a pH adjusting agent to brine, to adjust pH of the brine to 6.0-7.0, and controlling the temperature of the brine to 75° C.-90° C.; introducing an oxygen-containing gas into the brine, to covert the iron element in the brine into magnetic iron oxide; and separating the magnetic iron oxide from the brine by magnetic adsorption to obtain an iron-removed brine.

The application provides a method for separating iron elements in brine and application thereof, and the method for separating iron elements in brine comprises the following steps: adding a pH regulator into the brine, adjusting the pH value of the brine to 6.0-7.0, and controlling the temperature of the brine to be 75-90 DEG C; introducing oxygen-containing gas into the brine, so that the iron elements in the brine form magnetic iron oxide; and separating the magnetic iron oxide from the brine by using a magnetic separator to obtain iron-removed brine. The method can convert the iron elements in the brine into magnetic iron oxide, and then remove the iron elements from the brine by using a magnetic separation technology, so that the problem that iron ions in the brine interfere with the adsorption of lithium by an adsorbent is solved, and the iron-removed brine obtained by the method can be directly used for lithium extraction by an adsorption method, which is matched with the existing process conditions for lithium extraction from brine, and has good practicability.