Abstract

The present invention relates to an apparatus for manufacturing a potassium compound and a method of recovering a potassium compound from a brine, and provides the apparatus for manufacturing the potassium compound, including: a continuous pre-treatment apparatus including a crushing portion, a pulverization portion, and a particle size separation portion for processing a mixed raw material salt obtained after lithium, magnesium, and calcium are extracted from a brine to have a particle size for easy separation and sorting; a continuous potassium compound lump recovering apparatus continuously separating and recovering the potassium compound from the pre-treated mixed raw material salt; a continuous potassium compound separating and sorting apparatus continuously separating and sorting potassium chloride and a glaserite (Na2SO4⋅3K2SO4) from the recovered potassium compound; and a continuous potassium sulfate conversion apparatus extracting potassium sulfate from the separated glaserite.

IPC Classes  ?

• C01D 5/16 - Purification
• C01D 5/02 - Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfatesPreparation of bisulfates
• B01J 19/18 - Stationary reactors having moving elements inside
• C01D 3/00 - Halides of sodium, potassium, or alkali metals in general

Abstract

The present invention relates to a boron recovery apparatus, to a boron recovery method, and to a boron recovery system comprising a channel and at least one aeration device disposed in the channel. The boron recovery apparatus according to the present invention comprises an aeration channel-type reactor where a solution containing boron is aerated through the channel so that boron is extracted in the form of borax, and a precipitation tank where the extracted borax of the solution containing boron passing through the aeration channel-type reactor is precipitated and the remaining solution is separated by means of overflow.

IPC Classes  ?

• C02F 1/26 - Treatment of water, waste water, or sewage by extraction
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange

Abstract

The present invention relates to a method for manufacturing lithium hydroxide and to a method using same for manufacturing lithium carbonate. The method for manufacturing a lithium hydroxide aqueous solution comprises the steps of: preparing a lithium phosphate aqueous solution containing lithium phosphate particles; injecting a phosphate anion precipitant into the lithium phosphate aqueous solution; and precipitating a poorly soluble phosphorus compound by reacting cations of the phosphate anion precipitant with phosphoric acid anions of the lithium phosphate.

IPC Classes  ?

• C01D 15/02 - OxidesHydroxides
• C01D 15/08 - CarbonatesBicarbonates
• B01J 19/24 - Stationary reactors without moving elements inside

Abstract

Disclosed is a carbonation device including: a storage tank storing a carbonation subject solution; a droplet spray unit spraying the carbonation subject solution from the storage tank as droplets; a carbonation reaction tank disposed with the droplet spray unit and filled with a carbonation gas under a predetermined pressure to provide a slurry by a carbonation reaction of the droplet-sprayed carbonation subject solution with the filled carbonation gas; a carbonation gas supply unit supplying the carbonation gas into the carbonation reaction tank to maintain the carbonation gas in the carbonation reaction tank under the predetermined pressure; and a slurry outlet unit ejecting the slurry from the carbonation reaction tank to maintain the slurry formed in the carbonation reaction tank within a predetermined level, and a method of carbonation using the same.

IPC Classes  ?

• C01B 31/24 - Methods for the preparation of carbonates or bicarbonates in general
• B01J 19/26 - Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
• B01J 19/30 - Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer