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A steel slag-based porous particle electrode

A particle electrode and steel slag technology, applied in the field of steel slag-based porous particle electrode and its preparation, can solve the problems of low utilization rate, occupation of urban land, environment, air pollution, etc., and achieve large pore size, strong adsorption performance, and large specific surface area. Effect

Inactive Publication Date: 2016-06-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, most of this solid waste was used as roadbed backfill material, and the utilization rate has been very low. It not only occupies a large amount of urban land, but also causes serious pollution to the environment and air.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A. Steel slag particles are ball milled in a ball mill, taken out, washed, soaked (the purpose of washing and soaking is to desorb impurities), dried in an oven at 105°C, and then passed through an 80-mesh sieve to take dry fine steel slag particles for later use;

[0023] B. The shale is dried in an oven at 105°C, and the dried soil sample is crushed in a mortar, then passed through an 80-mesh sieve, and the dried fine shale is taken for later use;

[0024] C, the dry fine steel slag particles in step A, the dry fine shale in step B, charcoal powder and Fe 3 o 4 According to the percentage by weight of 50%:20%:20%:10%, mix and stir evenly, extrude into raw material ball;

[0025] D. Bake the raw meal balls in step C at 105°C in an oven for 24 hours;

[0026] E. Put the raw meal balls dried in step D in a high-temperature furnace from room temperature at 120°C / h to 300°C, heat for 2 hours, then rise at 60°C / h to 550°C, activate for 20 minutes, and then 300°C / h raised...

Embodiment 2

[0029] A. Steel slag particles are ball milled in a ball mill, taken out, washed, soaked (the purpose of washing and soaking is to desorb impurities), dried in an oven at 105°C, and then passed through an 80-mesh sieve to take dry fine steel slag particles for later use;

[0030] B. The shale is dried in an oven at 105°C, and the dried soil sample is crushed in a mortar, then passed through an 80-mesh sieve, and the dried fine shale is taken for later use;

[0031] C, the dry fine steel slag particles in step A, the dry fine shale in step B, sawdust and Fe 2 o 3 According to the percentage by weight of 55%:15%:15%:15%, mix and stir evenly, extrude into raw material ball;

[0032] D. Bake the raw meal balls in step C at 105°C in an oven for 24 hours;

[0033] E. Put the raw meal balls dried in step D in a high-temperature furnace from room temperature at 120°C / h to 300°C, heat for 2 hours, then rise at 60°C / h to 550°C, activate for 20 minutes, and then 300°C / h raised to 1050...

Embodiment 3

[0036] A. Steel slag particles are ball milled in a ball mill, taken out, washed, soaked (the purpose of washing and soaking is to desorb impurities), dried in an oven at 105°C, and then passed through an 80-mesh sieve to take dry fine steel slag particles for later use;

[0037] B. The shale is dried in an oven at 105°C, and the dried soil sample is crushed in a mortar, then passed through an 80-mesh sieve, and the dried fine shale is taken for later use;

[0038] C, the dry fine steel slag particles in step A, the dry fine shale in step B, starch and MnO 2 According to the percentage by weight of 60%:15%:15%:10%, mix and stir evenly, extrude into raw material ball;

[0039] D. Bake the raw meal balls in step C at 105°C in an oven for 24 hours;

[0040] E. Put the raw meal balls dried in step D in a high-temperature furnace from room temperature at 120°C / h to 300°C, heat for 2 hours, then rise at 60°C / h to 550°C, activate for 20 minutes, and then Roast at 300°C / h to 1050°C ...

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PUM

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Abstract

A steel slag-based porous particle electrode and a preparation method thereof belong to the technical field of wastewater treatment. The invention uses processed steel slag, shale, pore-forming agent and activator as raw materials, mixes and stirs them evenly according to a certain weight ratio, extrudes them into raw meal balls, performs drying treatment, heats, activates and roasts at a specific temperature , take it out after a period of time, cool to room temperature to get the finished product. The particle electrode prepared by the invention is porous, has a large specific surface area, strong adsorption performance, good electrical conductivity and catalytic performance, and is a new type of high-efficiency particle electrode. The invention provides a steel slag-based porous particle electrode and a preparation method thereof, making full use of industrial waste—steel slag, which can not only turn waste into wealth, but also reduce environmental pollution and solve problems such as land occupation.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a steel slag-based porous particle electrode for treating refractory organic matter in urban sewage and a preparation method thereof. Background technique [0002] Steel slag is a kind of solid waste discharged after steelmaking. It is composed of oxides generated after the oxidation of various elements in the metal charge, eroded furnace lining and furnace repair materials, impurities brought in by the metal charge such as silt and specially added slag. Slag materials, such as lime, fluorite, deoxidizer and other wastes formed. The composition of steel slag is relatively complex, and the treatment of steel slag has always been a problem that plagues my country's steelmaking industry. In the past, most of this solid waste was used as roadbed backfill material, and the utilization rate has been very low. It not only occupies a large amount of urban land, but also cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/138C04B38/06C02F1/461C02F101/30
CPCC04B33/138C04B38/068C04B2235/3262C04B2235/3272C04B2235/3284C04B38/0675C04B38/067Y02P40/60
Inventor 冯岩胡栗冯升李妙婉于衍真姚赛
Owner UNIV OF JINAN