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Waste treatment method

A treatment method and waste technology, applied in the field of environmental governance, can solve the problems of not being able to treat waste at the same time, not being able to deal with sludge containing copper and nickel, and having a single treatment object

Inactive Publication Date: 2013-10-30
LIANYUNGANG RONGDING METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment cost of this method is high, and it cannot treat a large amount of waste at the same time, and it cannot treat sludge containing copper and nickel, and the treatment object is single

Method used

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  • Waste treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Waste bricks with a total copper content of 25%

[0022] 1. Process for preparing waste bricks:

[0023] a) Ingredients: E-waste with a copper content of 20% and a particle size of less than 30 mm, copper-nickel sludge and other materials, 8% curing agent (lime: cement: water glass = 8:15:10);

[0024] b) According to the above ratio, mix 5% copper powder with the above raw materials evenly;

[0025] c) Brick making: “waste bricks” are made from mixed raw materials manually or mechanically;

[0026] d) Drying: place the finished product in a cool place to dry and solidify naturally to form a "waste brick" with compressive strength;

[0027] 2. Furnace smelting treatment process:

[0028] Put the dry and solidified waste bricks with compressive strength into the melting furnace for smelting. When the temperature in the melting furnace is 1100°C, after 3 hours of smelting, the harmful industrial waste such as sludge, circuit boards, and connecting wires will...

Embodiment 2

[0029] Example 2: Waste bricks with a total copper content of 30%

[0030] 1. Process for preparing waste bricks:

[0031] a) Ingredients: Electronic waste with a particle size of less than 30mm and copper-nickel sludge with a copper content of 15%, 5% curing agent (lime: cement: water glass = 5:20:10);

[0032] b) According to the above ratio, mix 15% copper powder with the above raw materials evenly;

[0033] c) Brick making: "waste bricks" are made from mixed raw materials manually or mechanically;

[0034] d) Drying: Place the finished product in a cool place to dry and solidify naturally to form a "waste brick" with compressive strength

[0035] 2. Furnace smelting treatment process:

[0036] Put dry and solidified waste bricks with compressive strength into a melting furnace or a blast furnace for smelting. When the temperature in the melting furnace is 1300°C, after 2.5 hours of smelting, harmful industrial waste such as sludge, circuit boards, and connecting wires w...

Embodiment 3

[0037] Example 3: Waste bricks with a total copper content of 35%

[0038] 1. Process for preparing waste bricks:

[0039] a) Ingredients: materials such as electronic waste with a particle size of 30mm or less and copper-nickel sludge with a copper content of 30%, 10% curing agent (lime: cement: water glass = 3:25:10);

[0040] b) According to the above ratio, mix 5% copper powder with the above raw materials evenly;

[0041] c) Brick making: the mixed raw materials are made into "waste bricks" of appropriate size by manual or mechanical means;

[0042] d) Drying: Place the finished product in a cool place to dry and solidify naturally to form a "waste brick" with compressive strength

[0043] 2. Furnace smelting treatment process:

[0044] Put dry and solidified waste bricks with compressive strength into a melting furnace or a blast furnace for smelting. When the temperature in the melting furnace is 1400°C, after 2 hours of smelting, harmful industrial waste such as slu...

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Abstract

The invention provides a method for treating electronic waste or copper-nickel sludge -containing waste by means of metallurgical technology. The method comprises the following steps of: performing pretreatment for the waste; evenly mixing and stirring 15%-30% of pretreated waste, 5%-10% of curing agent and copper powder with total copper content of 25%-35% to prepare a 'waste brick', and solidifying and drying the 'waste brick'; and smelting the waste brick in a smelting furnace. In comparison with the prior art, in the method provided by the invention, the harmful wastes containing the copper-nickel sludge, the circuit boards, the connection wires, and the like, are treated simultaneously, the metal resource substances, such as copper, nickel and noble metal, in the material are recycled, the organic ingredients crack and burn, and other ingredients are converted into steady broken glass.

Description

technical field [0001] The invention relates to a treatment process for hazardous waste, in particular to a treatment process for electronic waste and copper-nickel-containing sludge, and belongs to the field of environmental treatment. Background technique [0002] Electronic waste such as circuit boards of computers and electrical appliances, and information product connection lines contain a large amount of organic components such as plastics and adhesives. If they are directly incinerated or smelted to recover the metal resources contained in them, a large amount of harmful smoke, acid gas, and even The emission of dioxins has caused serious environmental pollution. [0003] Copper-nickel-containing sludge is mainly the heavy metal hydroxides and sulfides of copper-nickel and other heavy metals produced after the wastewater treatment process captures heavy metal ions in the water and is filtered. If not properly treated, the heavy metals contained in the sludge will dis...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C22B7/00
CPCY02P10/20
Inventor 宋宏凯高向前
Owner LIANYUNGANG RONGDING METAL
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