Method for directly extracting nickel in acidic chemical nickel plating waste solution

A technology of electroless nickel plating and electroless nickel, which is applied in chemical instruments and methods, metallurgical wastewater treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost, long treatment operation time, and few applications, and achieve reduction Effects of cost reduction and energy efficiency improvement

Inactive Publication Date: 2010-09-01
埃梯星(厦门)电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only has high processing costs, wastes a lot of nickel resources, but also causes secondary pollution
[0005] The electrodialysis method needs to invest in relevant electric equipment, such as plating tanks and electric plates, etc. The process of treatment takes a long time and consumes a lot of power. Due to the high cost, it is rarely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present invention comprises the following steps:

[0022] 1) Inject the acidic electroless nickel plating waste liquid into the acidic chemical nickel plating waste liquid tank, add catalytic reducing agent and nickel metal extraction carrier in the acidic chemical nickel plating waste liquid tank, and make the nickel ions in the acidic chemical nickel plating waste liquid ≥ 97 % deposited on the nickel metal extraction carrier;

[0023] The add-on of described catalytic reducing agent, by volume ratio, can be catalytic reducing agent: acidic electroless nickel plating waste solution=0.3: 100, described catalytic reducing agent can comprise succinic acid, glycine, sodium hypophosphite, sulfur Urea, thiobenzothiazole, sodium sulfosulfate, bismuth hydroxide and lactic acid, in every liter of catalytic reducing agent, the concentration of each component of catalytic reducing agent can be 15g / L of succinic acid, 7g / L of glycine Sodium phosphate 30g / L, thiourea 0.03g / L,...

Embodiment 2

[0029] Similar to Example 1, its difference is that in step 1), the addition of said catalytic reducing agent, by volume ratio, can be catalytic reducing agent: acidic electroless nickel plating waste solution=0.4: 100, said catalytic reducing agent Can include succinic acid, glycine, sodium hypophosphite, thiourea, thiobenzothiazole, sodium sulfosulfate, bismuth hydroxide and lactic acid, and the concentration of each component of the catalytic reducing agent can be Succinic acid 30g / L, glycine 15g / L, sodium hypophosphite 3g / L, thiourea 0.01g / L, thiobenzothiazole 0.7g / L, sodium sulfosulfate 0.02g / L, bismuth hydroxide 0.01 g / L, lactic acid 15g / L, surplus is water; Described nickel metal extraction carrier can adopt iron, and the shape of described nickel metal extraction carrier is mesh type or corrugated type; The temperature of described acidic electroless nickel plating waste solution is 85-90°C, use ammonia water to adjust the pH value of the acidic electroless nickel plat...

Embodiment 3

[0031] Similar to Example 1, its difference is that in step 1), the addition of said catalytic reducing agent, by volume ratio, can be catalytic reducing agent: acidic electroless nickel plating waste solution=0.5: 100, said catalytic reducing agent Can include succinic acid, glycine, sodium hypophosphite, thiourea, thiobenzothiazole, sodium sulfosulfate, bismuth hydroxide and lactic acid, and the concentration of each component of the catalytic reducing agent can be Succinic acid 5g / L, glycine 23g / L, sodium hypophosphite 15g / L, thiourea 0.5g / L, thiobenzothiazole 0.3g / L, sodium sulfosulfate 0.1g / L, bismuth hydroxide 0.05 g / L, lactic acid 30g / L, and the remainder is water; the shape of the nickel metal extraction carrier is a flake type; The pH of the solution was adjusted to 5.2.

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PUM

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Abstract

The invention discloses a method for directly extracting nickel in acidic chemical nickel plating waste solution, and relates to treatment of industrial waste solution. The invention provides the method for directly extracting nickel in the acidic chemical nickel plating waste solution, which can reduce the nickel-containing waste water treatment cost, improve the energy utilization of the nickel and achieve zero discharge of the acidic chemical nickel plating waste solution in place of the traditional chemical method, electro-dialysis method, electrolysis method, RO film separation method, pressure filtering method and the like. The method comprises the following steps of: injecting the acidic chemical nickel plating waste solution into an acidic chemical nickel plating waste solution tank; adding a catalytic reducer and a nickel metal extraction carrier into the acidic chemical nickel plating waste solution tank; depositing nickel ions, which are more than or equal to 97 percent in the acidic chemical nickel plating waste solution, on the nickel metal extraction carrier; and performing RO film reverse osmosis treatment and thermal evaporation treatment on the acidic chemical nickel residue after direct extraction of nickel so as to produce solid waste residue, namely the direct extraction of the nickel in the acidic chemical nickel plating waste solution is finished.

Description

technical field [0001] The invention relates to a treatment of industrial waste liquid, in particular to a method for directly extracting nickel from acidic electroless nickel plating waste liquid. Background technique [0002] Electroless nickel plating is a kind of action without external power supply. A layer of nickel-phosphorus alloy nickel coating is deposited on the metal surface by the oxidation-reduction reaction of the electroless nickel plating liquid. The acidic electroless nickel plating uses sodium hypophosphite as the reducing agent. The effective working cycle (life) of nickel is generally about 5 to 12 cycles available (the working cycle is defined as the nickel content when the new slot is used as the calculation unit. Due to the consumption of nickel in production, an additional calculation unit of nickel is added. That is, one cycle) after the cycle is reached, the hypophosphite in the plating solution accumulates in the plating solution in large quantiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/70C02F1/44C02F1/04C02F101/20C02F103/16
Inventor 刘景祥刘超刘政韩双刘明李兵
Owner 埃梯星(厦门)电子科技有限公司
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