Abrégé

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.

Classes IPC  ?

• C01D 5/16 - Purification
• C01D 5/02 - Préparation de sulfates à partir de sels de métaux alcalins et d'acide sulfurique ou de bisulfatesPréparation de bisulfates
• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• C01D 3/00 - Halogénures de sodium, de potassium ou des métaux alcalins en général

Abrégé

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.

Classes IPC  ?

• C02F 1/26 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par extraction
• C02F 1/42 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par échange d'ions

Abrégé

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.

Classes IPC  ?

• C01D 15/02 - OxydesHydroxydes
• C01D 15/08 - CarbonatesBicarbonates
• B01J 19/24 - Réacteurs fixes sans élément interne mobile

Abrégé

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.

Classes IPC  ?

• C01B 31/24 - Procédés de préparation des carbonates ou des bicarbonates en général
• B01J 19/26 - Réacteurs du type à injecteur, c.-à-d. dans lesquels la distribution des réactifs de départ dans le réacteur est effectuée par introduction ou injection au moyen d'injecteurs
• B01J 19/30 - Éléments de remplissage non agglomérés ou en forme, p. ex. anneaux de Raschig ou éléments de Berl en forme de selle, destinés à être versés dans l'appareil de transfert de chaleur ou de matière