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Iron removal device for nickel-cobalt-manganese sulfuric acid solution and method for continuously removing iron ions in nickel-cobalt-manganese sulfuric acid solution at low temperature

A nickel-cobalt-manganese sulfuric acid and solution technology, applied in the field of non-ferrous metal hydrometallurgy, can solve the problems of large energy consumption, low production efficiency, high iron removal temperature, etc., and achieve the effect of improving production efficiency

Pending Publication Date: 2021-06-29
HUNAN JINYUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only the iron removal temperature is high, it consumes a lot of energy, but also the reaction time is long and the production efficiency is low
At the same time, a large amount of hydrogen peroxide and potassium sulfate will be consumed, resulting in high production costs

Method used

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  • Iron removal device for nickel-cobalt-manganese sulfuric acid solution and method for continuously removing iron ions in nickel-cobalt-manganese sulfuric acid solution at low temperature
  • Iron removal device for nickel-cobalt-manganese sulfuric acid solution and method for continuously removing iron ions in nickel-cobalt-manganese sulfuric acid solution at low temperature
  • Iron removal device for nickel-cobalt-manganese sulfuric acid solution and method for continuously removing iron ions in nickel-cobalt-manganese sulfuric acid solution at low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: be used for the deironing device of nickel cobalt manganese sulfuric acid solution, be provided with deironing reactor 2 and aging reactor 9, be provided with the first agitator 3 in deironing reactor 2, in aging reactor 9 The second agitator 7 is arranged inside, and the iron removal reactor 2 is connected with the aging reactor 9 with an overflow port connecting pipe 5, and the iron removal reactor inner cylinder 5 is arranged in the iron removal reactor 2, and the iron removal reactor 2 and the interlayer of the inner cylinder 5 of the iron removal reactor are provided with a mixing feed pipe 12 and a carbonate solution feed pipe 4, and the top of the mixing feed pipe 12 is provided with a mixer 1 of a preheating device. The mixer 1 is provided with a compressed air inlet 11 and a feed port 10 for the liquid to be removed, and an automatic stone powder feeder 8 is provided on the aging reactor 9 . The mixer 1 is provided with a mixing chamber 15, the mi...

Embodiment 2

[0051] Embodiment 2: The iron removal device for nickel-cobalt-manganese sulfuric acid solution is provided with an iron removal reactor 2 and an aging reactor 9, and the aspect ratio of the iron removal reactor 2 is 1.0-2.5:1. The first agitator 3 is arranged in the iron removal reactor 2, and the first agitator 3 is composed of a motor and a stirring paddle. 1 / 3 of the diameter, the bottom stirring blade is 50-80cm away from the bottom of the reactor, and the upper and lower stirring blades are 50-115cm apart. A second agitator 7 is provided in the aging reactor 9 . The second agitator 7 is made up of two parts, a motor and a stirring paddle. The motor is fixed on the support 18. The stirring paddle adopts a cross-shaped double-layer stirring blade. The diameter of the stirring blade is 1 / 3 of the diameter of the aging reactor 9. The bottom layer stirs The blade is 50-80cm away from the bottom of the reactor, and the upper and lower stirring blades are 50-115cm apart. The ...

Embodiment 3

[0053] Embodiment 3: adopt the method for the low-temperature continuous removal of iron ions in the nickel-cobalt-manganese sulfuric acid solution of the iron removal device of the nickel-cobalt-manganese sulfuric acid solution, comprising the following steps:

[0054] a. Composition of sulfuric acid solution to be removed: Fe: 1.15g / L, Co: 26.03g / L, Mn: 5.41g / L, Ni: 7.35g / L;

[0055] b. Prepare 124g / L manganese carbonate slurry and heat it to 45°C;

[0056] c. Iron removal reactor 2 and aging reactor 9 both have a diameter of 3m, a height of 4m, and an effective volume of 24.72 cubic meters;

[0057] d. Turn on the mixer 1 and inject the iron removal solution, compressed air and manganese carbonate slurry at the same time, and the flow rate of the iron removal solution is 10.5m 3 / h, compressed air 21m 3 / h;

[0058] e. The temperature of the mixer is controlled at 45°C, the temperature in the reactor is controlled at 45°C, and the reaction pH value is controlled at 3.05;...

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Abstract

The invention discloses an iron removal device for a nickel-cobalt-manganese sulfuric acid solution and a method for continuously removing iron ions in the nickel-cobalt-manganese sulfuric acid solution at low temperature, and relates to a method for removing iron in a nickel-cobalt-manganese sulfuric acid solution. The device is provided with an iron removal reactor and an aging reactor, a stirrer is arranged in the iron removal reactor, an aging reactor stirrer is arranged in the aging reactor, an iron removal reactor inner barrel is arranged in the iron removal reactor, a mixed feeding pipe and a carbonate solution feeding pipe are arranged between interlayers of the iron removal reactor and the iron removal reactor inner barrel, a mixer of a preheating device is arranged at the top of the mixed feeding pipe, a compressed air inlet and a to-be-deironed liquid feeding hole are formed in the mixer, and an automatic mountain flour feeder is arranged on the aging reactor. The invention further discloses the iron removal method. The device has the advantages that the requirement for equipment is not high, energy is saved, continuous production can be achieved, the productivity efficiency is greatly improved, ferrous iron ions can be oxidized into trivalent iron ions under the condition that an oxidizing agent is not added, and the iron removal rate is 99.5% or above.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal wet smelting, in particular to a method for removing iron in a nickel-cobalt-manganese sulfuric acid solution. Background technique [0002] In industrial production, the commonly used methods to remove iron in solution are goethite and yellow sodium iron vanadium method. These two methods need to be carried out at a high temperature of 85°C or above, and an oxidizing agent needs to be added during the process to control the valence state of iron ions in the solution. In addition, other ions such as sodium and ammonium with a certain concentration in the solution also need to be satisfied. The above two iron removal methods add various reagents step by step and need to control a certain reaction time during the operation process, and generally can only be operated in a single tank. For example, the patent publication number is CN111187922A, and the publication date is 20200522, a method...

Claims

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Application Information

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IPC IPC(8): C22B3/44C22B3/02
CPCC22B3/44C22B23/0461C22B47/00Y02P10/20C01G49/00B01J19/18B01J19/0086B01J19/0066C22B3/02C22B3/22B01J2219/00177
Inventor 刘训兵彭灿刘振张超文周群成王子董雄武赵湘平吴山木
Owner HUNAN JINYUAN NEW MATERIALS CO LTD
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