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A kind of preparation method of ag wrapped nickel slag conductive powder

A technology of conductive powder and nickel slag powder, which is applied in the field of preparation of Ag-coated nickel slag conductive powder, can solve the problems of soil pollution, low utilization rate of nickel slag, and water pollution in the surrounding environment, and achieves simple operation and convenient raw materials The effect of obtaining and reducing the amount of silver

Inactive Publication Date: 2018-06-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the utilization rate of nickel slag in my country is low at present, and most of it is piled up in the slag yard, which has caused serious water pollution and soil pollution to the surrounding environment.

Method used

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  • A kind of preparation method of ag wrapped nickel slag conductive powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Ultrasonic nickel slag powder in water for 0.5h to obtain a uniform solution;

[0021] (2) Dissolve silver nitrate in water and add to the prepared nickel slag solution to mix evenly with ultrasonic, then stir for 2h to obtain solution A.

[0022] (3) ultrasonically dissolving oleic acid and ethylene glycol to obtain solution B, and the molar ratio of oleic acid and silver nitrate is 1:1.

[0023] (4) Add solution B to solution A, and after stirring for 1 hour, add deionized water with a molar ratio of 1:1 to silver nitrate to obtain solution C.

[0024] (5) After stirring the solution C for 2 hours, suction filtration and washing with deionized water for several times, put it into a drying box and dry for 2 hours to obtain solid D.

[0025] (6) Put the solid D into the corundum ceramic boat, transfer it to the tube furnace, pass argon gas, then heat up to 550°C at a heating rate of 2°C / min, keep the temperature for 2h, and cool to room temperature to obtain the ta...

Embodiment 2

[0029] (1) ultrasonicate the nickel slag powder in water for 1 h to obtain a uniform solution;

[0030] (2) Dissolve silver nitrate in water and add it to the nickel slag solution to mix evenly with ultrasonic, then stir for 4h to obtain solution A.

[0031] (3) ultrasonically dissolving potassium oleate and ethanol to obtain solution B, and the molar ratio of potassium oleate to silver nitrate is 10:1.

[0032] (4) Add solution B to solution A, and after stirring for 4 hours, add deionized water with a molar ratio of 50:1 to silver nitrate to obtain solution C.

[0033] (5) After stirring the solution C for 2 hours, suction filtration and washing with deionized water for several times, put it into a drying box and dry for 12 hours to obtain solid D.

[0034] (6) Put the solid D into a corundum ceramic boat, transfer it to a tube furnace, feed nitrogen, then heat up to 650°C at a heating rate of 2°C / min, keep the temperature for 2h, and cool to room temperature to obtain the ...

Embodiment 3

[0037] (1) ultrasonication of nickel slag powder in ammonia water for 0.8h to obtain a uniform solution;

[0038] (2) Dissolve silver nitrate in water and add it into the nickel slag solution to mix uniformly by ultrasonic, then stir for 2h to obtain solution A.

[0039] (3) oleic acid material and ethanol are mixed ultrasonic dissolving, obtain solution B, the mol ratio of oleic acid material and silver nitrate is 5:1, and oleic acid material is potassium oleate and calcium oleate mol ratio 1: 1 mix.

[0040] (4) Add solution B to solution A, and after stirring for 2 hours, add deionized water with a molar ratio of 25:1 to silver nitrate to obtain solution C.

[0041] (5) After stirring the solution C for 1 h, suction filtration and washing with deionized water for several times, put it into a drying box and dry for 6 h to obtain solid D.

[0042] (6) Put the solid D into a corundum ceramic boat, transfer it to a tube furnace, pass nitrogen, and then heat up to 600°C at a h...

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Abstract

The invention discloses a preparation method of Ag-coated nickel slag conductive powder. According to the preparation method, industrial waste, namely, nickel slag, is adopted as a carrier; silver salt is adopted as a precursor; oleic acid is added into an obtained solution, so that a uniform oleate coating can be formed; and the uniform oleate coating is subjected to thermal decomposition under a protective atmosphere at 550 DEG C to 650 DEG C, so that the Ag-coated nickel slag conductive powder can be formed. The size of silver particles obtained by using the preparation method of the invention is smaller than 100 nm; the silver particles are dispersed uniformly on the nickel slag carrier so as to form a network which has good electrical conductivity; according to the preparation process of the Ag-coated nickel slag conductive powder of the invention, a reducing agent is not required, and therefore, the preparation method is environmentally friendly; raw materials are highly available; and the preparation method is easy to operate and meets the requirements of industrialization.

Description

technical field [0001] The invention relates to a preparation method of Ag-coated nickel slag conductive powder, belonging to the technical field of material preparation in the energy industry and the field of solid waste recycling. Background technique [0002] Gold, silver, copper, and aluminum are common conductive metals, among which gold and silver have stable chemical properties and good electrical conductivity, but because the price of gold and silver is too expensive, the scope of use is limited. By wrapping silver on inorganic powder to make composite materials, the amount of silver can be greatly reduced. [0003] In addition, nickel slag is a granulated slag formed by water quenching of the high-temperature molten material formed in the process of metal nickel smelting. With the increase of nickel production in my country year by year, the discharge of nickel slag has also increased sharply, and the discharge of waste nickel slag in Fujian alone has reached more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
CPCH01B13/00
Inventor 张腾李巍婷张心愿魏颖温翠莲唐电
Owner FUZHOU UNIV
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