Technology for producing covering cobalt spherical nickelous hydroxide through continuous method

A spherical nickel hydroxide and continuous method technology, applied in nickel oxide/nickel hydroxide, etc., can solve the problems of low bulk tap density, non-continuous production, low production efficiency, etc., and achieve low production cost, complete oxidation, The effect of high production efficiency

Inactive Publication Date: 2013-01-16
ANHUI ALAND NEW ENERGY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that the new nickel hydroxide generated in the cladding layer is also exposed on the outermost surface, resulting in the oxidation of nickel, resulting in problems such as low bulk tap density and poor uniformity of the product. At the same time, it can only be produced in batches, and cannot Continuous production, high production cost and low production efficiency

Method used

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  • Technology for producing covering cobalt spherical nickelous hydroxide through continuous method
  • Technology for producing covering cobalt spherical nickelous hydroxide through continuous method
  • Technology for producing covering cobalt spherical nickelous hydroxide through continuous method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] ①. Preparation of reaction solution, oxidant and compressed air.

[0029] To prepare cobalt sulfate solution, add pure water into the preparation tank, start stirring, put a certain amount of cobalt sulfate into the preparation tank, and then replenish water to a sufficient amount; after stirring for one hour, the cobalt salt is fully dissolved and then sampled for testing. The cobalt concentration is at Pumped into the storage tank at 68g / L.

[0030] Prepare sodium hydroxide solution, add pure water into the preparation tank, and start stirring, put a certain amount of sodium hydroxide into the preparation tank, and then replenish the water to a sufficient amount; after stirring for one hour, the sodium hydroxide is fully dissolved and then sampled for testing , the sodium hydroxide concentration is pumped into the storage tank at 15.5%.

[0031] To prepare ammonia solution, add pure water to the preparation tank, turn on the circulation pump, inject a certain amount ...

Embodiment 2

[0043] ①. Preparation of reaction solution, oxidant and compressed air.

[0044] To prepare cobalt sulfate solution, add pure water into the preparation tank, start stirring, put a certain amount of cobalt sulfate into the preparation tank, and then replenish water to a sufficient amount; after stirring for one hour, the cobalt salt is fully dissolved and then sampled for testing. The cobalt concentration is at 72g / L when pumped into the storage tank.

[0045] Prepare sodium hydroxide solution, add pure water into the preparation tank, and start stirring, put a certain amount of sodium hydroxide into the preparation tank, and then replenish the water to a sufficient amount; after stirring for one hour, the sodium hydroxide is fully dissolved and then sampled for testing , the sodium hydroxide concentration is pumped into the storage tank at 14.5%.

[0046]To prepare ammonia solution, add pure water to the preparation tank, turn on the circulation pump, inject a certain amount...

Embodiment 3

[0057] ①. Preparation of reaction solution, oxidant and compressed air.

[0058] To prepare cobalt sulfate solution, add pure water into the preparation tank, start stirring, put a certain amount of cobalt sulfate into the preparation tank, and then replenish water to a sufficient amount; after stirring for one hour, the cobalt salt is fully dissolved and then sampled for testing. The cobalt concentration is at 70g / L when pumped into the storage tank.

[0059] Prepare sodium hydroxide solution, add pure water into the preparation tank, and start stirring, put a certain amount of sodium hydroxide into the preparation tank, and then replenish the water to a sufficient amount; after stirring for one hour, the sodium hydroxide is fully dissolved and then sampled for testing , the sodium hydroxide concentration is pumped into the storage tank at 15%.

[0060] To prepare ammonia solution, add pure water to the preparation tank, turn on the circulation pump, inject a certain amount ...

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Abstract

The invention relates to a production technology of covering cobalt spherical nickelous hydroxide, in particular to a technology for producing the covering cobalt spherical nickelous hydroxide through a continuous method. The technology comprises the following steps of: starting a covering cobalt synthesizing kettle, agitating and heating; starting a cobaltous sulfate solution metering pump and an oxidant metering pump, and pouring compressed air so as to continuously react; detecting a pH (Potential Of Hydrogen) and alkalinity of a reaction system in a reaction kettle; starting a sodium hydroxide solution metering pump and an ammonia water solution metering pump; keeping the pH and the alkalinity of the reaction system; detecting solid content of sizing in the reaction kettle; detecting granularity of the covering cobalt spherical nickelous hydroxide through a laser granularity instrument; controlling a flow rate of sodium hydroxide based on detected data and a product standard requirement; so as to control a covering cobalt spherical nickelous hydroxide coating; and flowing the sizing in a covering cobalt synthesizing kettle into a secondary ageing tank through an overflowing port. According to the technology for producing the covering cobalt spherical nickelous hydroxide through the continuous method provided by the invention, a continuous production technology is adopted, production is carried out with low cost and high production efficiency, and high product competitiveness is ensured; the coating in produced covering cobalt spherical nickelous hydroxide coating is uniformly oxidized, and oxidation is completely carried out, and a high degree of sphericity is ensured.

Description

technical field [0001] The invention relates to a production process of cobalt-coated spherical nickel hydroxide, in particular to a process for continuously producing cobalt-coated spherical nickel hydroxide. Background technique [0002] With the development of science and technology and the birth of various new electrification products, the application of secondary energy storage batteries is more extensive, and at the same time, higher requirements are put forward for the performance of secondary energy storage batteries. Spherical nickel hydroxide is a variety of alkaline secondary batteries (such as Ni / Cd, Ni / MH, Ni / H 2 etc.) positive electrode active materials play a vital role in the excellent performance of secondary energy storage batteries. In recent years, due to the vigorous research and development of positive electrode active materials for alkaline secondary batteries, some positive electrode active materials with greater advantages have emerged as the times ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04
Inventor 王大伟王锡芬鲁海春李世辉王艳红孙朝军孙卫华
Owner ANHUI ALAND NEW ENERGY MATERIALS
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