Cement-based porous filter material prepared from waste circuit board non-metal powder and preparation method thereof

A technology for discarded circuit boards and non-metallic powders, applied in the direction of filtration separation, separation methods, ceramic material production, etc., can solve the problems of limited application and high production costs, and achieve the effects of reduced production costs, high compressive strength, and small pore size

Active Publication Date: 2019-11-15
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Patent CN 104327374 A discloses a method for preparing composite materials by using waste circuit board non-metallic ultrafine powder and polyolefin, patent CN 101353585 A discloses a method for preparing modified asphalt by using waste circuit board non-metal powder, patent CN 107057141 A discloses a method of grafting polystyrene hybrid particles on the surface of waste printed circuit board non-metal powder to reinforce styrene-butadiene rubber. Patent 201310044154.6 A method for preparing composite materials by using waste printed circuit board non-metal powder and ABS resin Method, patent CN 107098658A discloses a method of making concrete pavement bricks by using non-metallic powder of waste circuit boards; these patents can recycle non-metallic powder of waste printed circuit boards, but the production cost of some products is relatively high, which limits its application. And both failed to combine the use of glass fiber and resin in the non-metallic powder of waste printed circuit boards

Method used

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  • Cement-based porous filter material prepared from waste circuit board non-metal powder and preparation method thereof
  • Cement-based porous filter material prepared from waste circuit board non-metal powder and preparation method thereof
  • Cement-based porous filter material prepared from waste circuit board non-metal powder and preparation method thereof

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preparation example Construction

[0038] The preparation method of the cement-based porous filter material prepared by waste circuit board non-metallic powder comprises the following steps:

[0039]1) Weigh waste circuit board non-metallic powder, aluminate cement, and desulfurized gypsum according to the formula, and mix them in a mixer for 10-20 minutes to obtain a dry material mixture;

[0040] 2) Add tap water (or clean river water) accounting for 12 to 15% of the weight of the dry mixture to the dry mixture prepared in step 1), and then start the mixer to mix for 5 to 10 minutes to obtain a wet mixture.

[0041] 3) Press the wet material mixture prepared in step 2) into a billet, the molding pressure is 10-20MPa, and the holding time is 50-70s;

[0042] 4) Put the blank formed in step 3) into a curing box with a temperature of 25±2°C and a humidity of 70-85% for 48±2 hours, and then move it into a curing box with a temperature of 60±2°C and a humidity of ≥90% 72±3 h in the curing box.

[0043] 5) Put th...

Embodiment 1

[0047] Proportion: 75 parts of waste circuit board non-metallic powder, 24 parts of aluminate cement, and 1 part of desulfurized gypsum.

[0048] Preparation:

[0049] (1) Weigh waste circuit board non-metallic powder, aluminate cement and desulfurized gypsum according to the formula, and mix them in a mixer for 10-20 minutes to obtain a dry material mixture;

[0050] (2) Add tap water (or clean river water) accounting for 12-15% of the weight of the dry material mixture to the dry material mixture prepared in step (1), then start the mixer and mix for 5-10 minutes to obtain a wet material mixture.

[0051] (3) Press the wet material mixture prepared in step (2) into a billet, the molding pressure is 10MPa, and the holding time is 50-70s;

[0052] (4) Put the green body pressed and formed in step (3) into a curing box with a temperature of 25±2°C and a humidity of 70-85% for 48±2 hours, and then move it into a curing box with a temperature of 60±2°C and a humidity of ≥90 72±...

Embodiment 2

[0056] Proportion: 77 parts of waste circuit board non-metallic powder, 22 parts of aluminate cement, and 1 part of desulfurized gypsum.

[0057] Preparation:

[0058] (1) Weigh waste circuit board non-metallic powder, aluminate cement and desulfurized gypsum according to the formula, and mix them in a mixer for 10-20 minutes to obtain a dry material mixture;

[0059] (2) Add tap water (or clean river water) accounting for 12-15% of the weight of the dry material mixture to the dry material mixture prepared in step (1), then start the mixer and mix for 5-10 minutes to obtain a wet material mixture.

[0060] (3) Press the wet material mixture prepared in step (2) into a billet, the molding pressure is 10MPa, and the holding time is 50-70s;

[0061] (4) Put the green body pressed and formed in step (3) into a curing box with a temperature of 25±2°C and a humidity of 70-85% for 48±2 hours, and then move it into a curing box with a temperature of 60±2°C and a humidity of ≥90 72±...

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Abstract

The invention discloses a cement-based porous filter material prepared from waste circuit board non-metal powder, belonging to the technical field of porous filter material. The cement-based porous filter material is prepared from the following raw materials in parts by weight: 75 to 83 parts by weight of waste circuit board non-metal powder, 15 to 24 parts by weight of aluminate cement and 1 to 2parts by weight of desulfurized gypsum. The invention also discloses a preparation method thereof. The invention makes full use of the respective performance characteristics of resin such as epoxy resin and glass fiber in the waste circuit board non-metal powder, the cement-based porous filter material has the characteristics of low calcination temperature (730-770 DEG C), high compressive strength, high apparent porosity, good alkali corrosion resistance, good permeability and small pore size, and can be used for the treatment of flue gas at medium and low temperatures, alkaline or neutral sewage. In the cement-based porous filter material, the doping proportion of the two waste residues including the waste circuit board non-metal powder and the desulfurized gypsum reaches 76-85%, and the cement-based porous filter material has good economic benefit and environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of porous filter materials, in particular to a cement-based porous filter material prepared from waste circuit board non-metal powder and a preparation method thereof. Background technique [0002] Porous filter material products are widely used in chemical industry, environmental protection, energy, electronics, petroleum, medicine, biochemistry and other fields according to their different preparation materials, pore-forming methods and product performance indicators. [0003] Porous filter material is a material with closed or interpenetrating pores forming a network structure. Generally, refractory and high-strength materials are used as aggregates, and pores are generated under high-temperature calcination with pore-forming agents. [0004] There are many types of porous filter materials, the common ones are sintered ceramic-based porous filter materials, sintered metal-based porous filter materials, si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/06B01D39/00
CPCB01D39/00C04B33/131C04B33/132C04B33/1328C04B38/067C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96C04B2235/9692C04B38/0054C04B38/0067C04B38/0074Y02P40/60
Inventor 徐风广陈浩蒋金科吴其胜杨凤玲
Owner YANCHENG INST OF TECH
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