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Method for preparing electronic ternary material precursor from Ni-Co residues

A ternary material, nickel-cobalt slag technology, applied in electrical components, circuits, battery electrodes, etc., can solve the problems of large new increments, large storage capacity, environmental impact, etc., and achieve the effect of reducing the purification process

Active Publication Date: 2013-11-06
HUNAN KEFEITE HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Nickel-cobalt-containing solid waste includes nickel-cobalt solid waste from metallurgy and chemical industries, nickel-metal hydride batteries and lithium battery waste batteries (these are discarded every year in my country There are billions of waste batteries, a huge amount), oil refining catalysts in petrochemical enterprises (the catalyst contains high nickel and cobalt, and the catalyst needs to be replaced after 1-2 years of use). At present, the storage of these wastes in China is relatively large, and every The new increment is also relatively large, if it is not treated, it will have an impact on the environment

Method used

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  • Method for preparing electronic ternary material precursor from Ni-Co residues
  • Method for preparing electronic ternary material precursor from Ni-Co residues

Examples

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example 2

[0054] A petrochemical enterprise’s catalyst waste, containing nickel, cobalt, aluminum, vanadium, molybdenum, etc., adopts the combined process of basic roasting method + water leaching method. The waste catalyst is mixed with a certain amount of caustic soda, the ingredient ratio is 1: 0.3, and the roasting temperature is 700 ℃, roasting time 1h, the produced calcine is leached in water with a liquid-to-solid ratio of 1:0.5. The aluminum, vanadium, and molybdenum are leached with water to enter the leaching solution, while nickel and cobalt are concentrated in the water leaching residue. The leaching temperature is 90℃, the leaching time is 5h, and the leaching residue is obtained by filtration, which is called 1# slag.

[0055] The waste nickel-hydrogen battery waste is separated by manual machinery to obtain nickel-cobalt slag, called 2# slag.

[0056] Nickel-cobalt slag produced by a metallurgical enterprise, containing nickel, cobalt, zinc, etc., was crushed to 250 mesh, and ...

example 1

[0066] According to the pretreated materials of various nickel and cobalt wastes, batching is carried out. For example, one of the batching processes can be used as follows:

[0067] Take 50 grams of 1# slag

[0068] Take 50 grams of 2# slag

[0069] Take 50 grams of 3# slag

[0070] Take 100 grams of 4# slag

[0071] Take 90 grams of 5# slag

[0072] 5. Ingredients example 2:

[0073] According to the needs of customers of ternary electronic materials for the ratio of nickel and cobalt, combined with the content of nickel and cobalt in various nickel and cobalt slags, the ratio between nickel and cobalt is adjusted. Two or three or four of the above 1# to 5# slag can be selected for batching, and the nickel-cobalt ratio can be adjusted appropriately. It can overcome the inconsistency of nickel and cobalt ratio in various slag types in nickel and cobalt waste. Through the design adjustment of the ingredients, the mol ratio between nickel and cobalt can reach 1:(0.2-1).

[0074] 6. Examp...

example 2

[0077] The mixed nickel-cobalt slag obtained after the above-mentioned ingredients is finely ground through a ball milling process, the particle size is <200 mesh. The fine abrasive is leached with sulfuric acid, the liquid-to-solid ratio is 7:1, the leaching temperature is 70°C, the leaching time is 1 hour, the amount of sulfuric acid is 1.6 times the theoretical amount, and the end point acidity pH=3.5-5 is maintained. Through sulfuric acid leaching, nickel and cobalt enter the sulfuric acid solution.

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Abstract

The invention discloses a method for preparing an electronic ternary material precursor from Ni-Co residues. The method realizes combination of one or more physical and chemical methods. The method comprises the following steps of pre-treating Ni-Co-containing waste or waste residues so that Ni and Co are preliminarily separated from other substances, adjusting a mole ratio of Ni to Co in the Ni-Co-containing waste or waste residues to 1: (1-0.2), carrying out deep purification of other elements except Ni and Co by an extraction method, treating an Ni-Co group, carrying out separation purification to remove other impurities, wherein Ni and Co is not separated, and directly preparing the Ni-Co oxide precursor of the electronic ternary material by a metallurgical technology, and adding sodium carbonate or sodium hydroxide into a Ni and Co sulfuric acid solution to directly produce an Ni-Co carbonate or an Ni-Co hydroxide. An important characteristic or an innovation point of the method comprises that Ni and Co are combined in an ion level. The method improves environment influence, can produce a novel Ni-Co product and is conducive to resource recycle and environment-friendly development.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a method for preparing an electronic ternary material precursor by using nickel-cobalt slag. Background technique [0002] Solid waste containing nickel and cobalt includes solid discharge of nickel and cobalt in the metallurgical and chemical industries, waste batteries of nickel-metal hydride batteries and lithium batteries (there are billions of such waste batteries discarded in my country every year, a huge amount), petrochemical Enterprise refinery catalysts (the content of nickel and cobalt is relatively high, and the catalyst needs to be replaced after 1-2 years of use). At present, the domestic storage of these wastes is relatively large, and the annual increase is also relatively large. If they are not treated, they will have an impact on the environment. . By processing this part of waste, the environmental impact is improved, and new products of nickel and c...

Claims

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Application Information

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IPC IPC(8): H01M4/38
CPCY02E60/12Y02E60/10
Inventor 不公告发明人
Owner HUNAN KEFEITE HIGH TECH CO LTD
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