Manufacturing equipment and manufacturing method of complex metal hydroxide compounds

Abstract

An apparatus for manufacturing a composite hydroxyl metal compound includes a mixing unit, a chemical reagent supply unit, a reaction unit, and a powder drying unit. The mixing unit includes multiple liquid-phase mixers and multiple gas-liquid mixers, wherein the liquid-phase mixers and gas-liquid mixers are arranged alternately and are in fluid communication with each other. The chemical reagent supply unit includes a liquid supply subunit in fluid communication with the multiple liquid-phase mixers and a gas supply subunit in fluid communication with the multiple gas-liquid mixers. The reaction unit is in fluid communication with the mixing unit. The powder drying unit is in fluid communication with the reaction unit. Furthermore, a method for manufacturing a composite hydroxyl metal compound is also provided.

Claims

1. A method for manufacturing a composite hydride-metal compound, comprising: Provided a plurality of liquid phase mixers and a plurality of gas-liquid mixers, wherein the plurality of liquid phase mixers and the plurality of gas-liquid mixers are arranged alternately and are in fluid communication with each other; A metal solution is mixed with a first liquid chemical agent in a first liquid phase mixer among the plurality of liquid phase mixers to form a first mixed solution, wherein the metal solution includes at least one of ferrous sulfate, ferrous nitrate, ferrous chloride, ferric sulfate, ferric nitrate, and ferric chloride, and the first liquid chemical agent includes at least one of sodium hydroxide, calcium hydroxide, sulfuric acid, hydrochloric acid, and carbonic acid; the first mixed solution is then mixed with a first gaseous chemical agent in a first gaseous-liquid mixer among the plurality of gaseous-liquid mixers to form a second mixed solution, wherein the first gaseous chemical agent includes air, oxygen, or a combination thereof; The second mixed solution is mixed with a second liquid chemical agent in a second liquid phase mixer among the plurality of liquid phase mixers to form a third mixed solution, wherein the second liquid chemical agent includes at least one selected from ferrous sulfate, ferrous nitrate, ferrous chloride, ferric sulfate, ferric nitrate, ferric chloride, sodium hydroxide, calcium hydroxide, sulfuric acid, hydrochloric acid, and carbonic acid; the third mixed solution is mixed with a second gaseous chemical agent in a second gaseous-liquid mixer among the plurality of gaseous-liquid mixers to form a fourth mixed solution, wherein the second gaseous chemical agent includes air, oxygen, or a combination thereof; The fourth mixed solution is fed into the reaction unit for a reaction step to form a composite hydride-metal compound slurry, wherein the reaction temperature of the reaction step is 30°C to 40°C, the reaction pressure is 1 to 1.2 bar, and the reaction time is 48 to 96 hours; and the composite hydride-metal compound slurry is fed into the powder drying unit for a drying step to form a composite hydride-metal compound powder, wherein the composite hydride-metal compound powder comprises 60% to 70% by weight of γ-Fe₂O₃ and 20% to 40% by weight of α-FeOH.

2. The manufacturing method as claimed in claim 1, wherein the metal solution is a 10% ferrous chloride aqueous solution, the first liquid chemical agent is a 5% sodium hydroxide aqueous solution, and the volume ratio of the metal solution to the first liquid chemical agent mixed in the first liquid phase mixer is 1:10 to 1:

50.

3. The manufacturing method as claimed in claim 2, wherein the second liquid chemical is a 20% sodium hydroxide aqueous solution, and the volume ratio of the second mixed solution to the second liquid chemical in the second liquid phase mixer is 1:1 to 1:

10.

4. The manufacturing method as claimed in claim 1, wherein the drying temperature of the drying step is 80°C to 200°C.

5. The manufacturing method as claimed in claim 1, further comprising feeding the powder of the composite hydroxyl metal compound and a binder into a granulation unit for granulation to form composite hydroxyl metal compound particles.

6. The manufacturing method as claimed in claim 5, wherein the weight ratio of the binder to the powder of the composite hydroxyl metal compound is 1:2 to 1:1000.

7. The manufacturing method as claimed in claim 5, wherein the particle size of the composite hydroxyl metal compound particles is from 0.1 mm to 50 mm.

8. The manufacturing method as claimed in claim 5, wherein the binder comprises calcium carbonate (CaCO3), aluminum hydroxide (Al(OH)3), urea, sodium aluminate (NaAlO2), aluminum nitrate (Al(NO3)3), sodium silicate (Na2SiO3), calcium silicate (CaSiO3), polyethylene, ethylene diamine tetraacetic acid (EDTA), ethylene-vinyl acetate copolymer, polypropylene, or combinations thereof.

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