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Recycling and treatment method for waste printing nickel screen

A technology of recovery treatment and nickel mesh, which is applied in the direction of chemical instruments and methods, nickel sulfate, nickel compounds, etc., can solve the problems of low recovery rate, large pollution, high cost, etc., and achieve high recovery rate, low power consumption and added value high effect

Inactive Publication Date: 2019-06-07
浙江科菲科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of low recovery rate, high cost and heavy pollution in the recycling of nickel mesh in the prior art, the purpose of the present invention is to provide a method for recycling waste printed nickel mesh

Method used

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  • Recycling and treatment method for waste printing nickel screen

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Embodiment 1

[0025] A method for recycling and processing waste printed nickel mesh, including the following steps:

[0026] 1) The waste printed nickel mesh is cut into fragments about 1×1cm in size, and the fragments are placed in a titanium basket, which enters the pretreatment tank, and is soaked in a small amount of dilute sulfuric acid aqueous solution for about 1 hour for pretreatment. To remove a small amount of iron filings on the fragments obtained in the shearing process, take the fragments from the dilute sulfuric acid aqueous solution for use;

[0027] 2) There is an aqueous sulfuric acid solution inside the microbubble nickel dissolving kettle, the mass concentration of the sulfuric acid aqueous solution is 200g / L, and the temperature is 80°C; the pretreated fragments obtained in step 1) are put into the microbubble nickel dissolving kettle ( The mass ratio of the fragments to the volume of the sulfuric acid aqueous solution is 1:5, the unit of mass is g, and the unit of volume is...

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Abstract

The invention discloses a recycling and treatment method for a waste printing nickel screen. The recycling and treatment method comprises the following steps: shearing the waste printing nickel screeninto fragments; after immersing the fragments in an acidic solution, taking out the fragments and putting the fragments into a micro-bubble nickel dissolving kettle containing an inorganic acid watersolution; stirring and introducing air or oxygen into the micro-bubble nickel dissolving kettle; emulsifying separated liquid through a circulating pump, a liquid-gas spraying pump and a baffling plate in sequence, and returning emulsified liquid back into the micro-bubble nickel dissolving kettle to form the circulation of the solution in the micro-bubble nickel dissolving kettle; carrying out micro-bubble leaching reaction; and after reaction is finished, carrying out filtering, pre-cooling, freezing and crystallization, solid-liquid separation and drying in sequence to obtain a nickel saltproduct. According to the recycling and treatment method, the separation of a nickel screen and a surface thin film of the waste printing nickel screen is realized through a micro-bubble nickel dissolving technology; meanwhile, high-quality nickel is recycled; in a whole system, waste residues, wastewater, waste gas and the like are not generated; and the metal recycling rate is high, the treatment cost is low and the environment-friendly meaning is obvious.

Description

Technical field [0001] The invention belongs to the technical field of non-ferrous metal hydrometallurgy, and specifically relates to a method for recycling waste printed nickel nets. Background technique [0002] Printed nickel mesh is currently the main method of printing colors in the printing and dyeing industry. After many times of use, there will be damage to the nickel mesh due to excessive use and artificial reasons. The damaged nickel mesh will not continue to be used for printing and dyeing. Enterprises choose to discard or pile up, and there is no unified disposal method. Since the nickel mesh is electroplated with electrolytic nickel Ni9996 or higher in the production process, the purity of nickel in the nickel mesh will be higher, and the chemical composition will reach 99.99% or more. This part of the nickel mesh is more pure and can be To achieve high-efficiency utilization, no need to consider the removal of impurities in the recycling process, and can directly p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C01G53/10
Inventor 邓涛李继洲李想翟世双付彦杰
Owner 浙江科菲科技股份有限公司
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