Methods and equipment to make lithium hydroxide monohydrate from lithium salts

A method of producing lithium hydroxide from lithium salts, the method comprising:

• contacting a resin bed including anion exchange resin having hydroxyl ions bound thereto with a contacting solution having dissolved lithium salts therein for a duration of time effective to at least partially exchange anions of the dissolved lithium salts with the hydroxyl ions bound to the anion resin;
• draining the contacting solution from the resin bed to collect a product solution including at least some lithium hydroxide therein;
• washing the drained resin bed with water effective to displace any residual contacting solution from the anion exchange resin;
• soaking the washed resin bed with a caustic solution effective to displace anions of the dissolved lithium salts from the anion exchange resin with hydroxyl ions of the caustic solution;
• and
• draining the caustic solution from the soaked resin bed to collect a by-product solution.