Method for preparing nano nickel oxide from nickeliferous waste materials

A nano-nickel oxide and waste technology, applied in the fields of nanotechnology for materials and surface science, nickel oxide/nickel hydroxide, nanotechnology, etc., can solve the problems of low nickel recovery rate, many influencing factors, and discharge of waste water, etc. To achieve the effect of short holding time, avoiding agglomeration and small particle size

Inactive Publication Date: 2016-04-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the recovery process of nickel-containing waste is to obtain high-purity nickel salt by leaching and purification, and then process the nickel salt to obtain nickel oxide. This process is complicated, and there are many influencing factors in the purification process. Low recovery rate and high cost
Moreover, waste water will be discharged during the purification process, causing pollution to the environment

Method used

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  • Method for preparing nano nickel oxide from nickeliferous waste materials
  • Method for preparing nano nickel oxide from nickeliferous waste materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The method for preparing nano-nickel oxide with nickel-containing waste described in this embodiment specifically comprises the following steps:

[0020] (1) Pre-treatment of nickel-containing waste: Nickel-containing waste is disassembled, dried (removing part of the moisture in the raw material so that the raw material can be crushed), and crushed for later use.

[0021] (2) Sulfuric acid leaching: The powdery nickel-containing waste is leached with sulfuric acid, wherein the mass percent concentration of sulfuric acid is 2mol / L, the stirring speed is 300r / min, and the leaching time is 150min. The solid-liquid ratio of powdery nickel-containing waste to sulfuric acid is It's 1:10.

[0022] (3) Treatment of sulfuric acid solution containing nickel:

[0023] ①Add tartaric acid solution to the nickel-containing sulfuric acid solution obtained in step (2), wherein the volume ratio of nickel-containing sulfuric acid solution to tartaric acid solution is 20:1, and the conc...

Embodiment 2

[0029] The method for preparing nano-nickel oxide with nickel-containing waste described in this embodiment specifically comprises the following steps:

[0030] (1) Pre-treatment of nickel-containing waste: Nickel-containing waste is disassembled, dried (removing part of the moisture in the raw material so that the raw material can be crushed), and crushed for later use.

[0031] (2) Sulfuric acid leaching: The powdery nickel-containing waste is leached with sulfuric acid, the mass percent concentration of sulfuric acid is 3mol / L, the stirring speed is 1000r / min, and the leaching time is 100min. The solid-liquid ratio of powdery nickel-containing waste to sulfuric acid is It is 1:8.

[0032] (3) Treatment of sulfuric acid solution containing nickel:

[0033] ①Add tartaric acid solution to the nickel-containing sulfuric acid solution obtained in step (2), wherein the volume ratio of nickel-containing sulfuric acid solution to tartaric acid solution is 35:1, and the concentrati...

Embodiment 3

[0039] The method for preparing nano-nickel oxide with nickel-containing waste described in this embodiment specifically comprises the following steps:

[0040] (1) Pre-treatment of nickel-containing waste: Nickel-containing waste is disassembled, dried (removing part of the moisture in the raw material so that the raw material can be crushed), and crushed for later use.

[0041] (2) Sulfuric acid leaching: leaching powdery nickel-containing waste with sulfuric acid, wherein the mass percent concentration of sulfuric acid is 4mol / L, the stirring speed is 1500r / min, and the leaching time is 70min. The solid-liquid ratio of powdery nickel-containing waste to sulfuric acid is It is 1:6.

[0042] (3) Treatment of sulfuric acid solution containing nickel:

[0043] ① Add tartaric acid solution to the nickel-containing sulfuric acid solution obtained in step (2), wherein the volume ratio of nickel-containing sulfuric acid solution to tartaric acid solution is 50:1, and the concentra...

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Abstract

The invention discloses a method for preparing nano nickel oxide from nickeliferous waste materials, and belongs to the technical field of nickeliferous waste material recycling. The method comprises the steps that powder nickeliferous waste materials are leached through sulfuric acid, a tartaric acid solution is added to a nickeliferous sulfuric acid solution to serve as a screening agent, ammonia water is added, the solution is always kept clear, acetic acid is slowly added to enable pH of the solution to be controlled to range from 3 to 6, and the solution is heated to 50-65 DEG C; a dimethylglyoxime ethanol solution is added, an enough amount of ammonia water is added to make pH of the solution be 10, filtering and washing are conducted after standing is conducted, nickel dimethylglyoxime is obtained and calcined through a muffle furnace, and the nano nickel oxide is obtained. The nano nickel oxide prepared through the method has the advantages of being small and uniform in particle size and the like, the heat preservation time in the calcining process is short, and the advantages of being complete in particle and high in crystallinity are guaranteed.

Description

technical field [0001] The invention relates to a method for preparing nano-nickel oxide from nickel-containing waste, and belongs to the technical field of nickel-containing waste recovery. Background technique [0002] The abundance of nickel in the earth's crust is only 0.008%, which is much lower than that of other metals with lower abundance (such as copper). my country's total nickel reserves are only about 8 million tons, ranking ninth in the world, and require a large amount of imports every year. Nickel is not only used in a large amount in a metallic state, but also in a compound state in various fields of the national economy. Nearly 70% of nickel in the world is used in the stainless steel industry. Nickel in alloys can significantly improve the strength and corrosion resistance of materials. It is an important component of stainless steel and ultra-high-strength structural steel, and is also an important component of nickel-cadmium and nickel-hydrogen batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y30/00B09B3/00
CPCC01G53/04B09B3/00B82Y30/00C01P2004/04C01P2004/64
Inventor 易健宏王立丽张正富冷崇燕郭文凯刘警峰
Owner KUNMING UNIV OF SCI & TECH
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