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A kind of red mud-based particle electrode and preparation method thereof

A particle electrode and red mud-based technology, applied in chemical instruments and methods, ceramic products, and other household appliances, can solve problems such as polluting groundwater, occupying land, and environmental pollution, and achieve strong adsorption performance, large pore size, and large ratio The effect of surface area

Inactive Publication Date: 2016-10-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage in our country, there are still a large amount of red mud that cannot be effectively used. Stacking in the yard not only takes up a lot of land, but also red mud is an alkaline substance. Long-term stacking will alkalize the land, pollute the groundwater, and cause environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A. The red mud particles are ball milled in a ball mill, washed and soaked after being taken out (the purpose of washing and soaking is to desorb impurities), dried in an oven at 120°C, and then passed through a 60-mesh sieve to take dry fine red mud particles for later use;

[0023] B. Put the shale in an oven to dry at 120°C, crush the dried shale in a mortar, pass through a 60-mesh sieve, and take the dried fine shale for later use;

[0024] C, the dry fine red mud 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 120°C in an oven for 24 hours;

[0026] E. Put the raw material 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°C fo...

Embodiment 2

[0029] A. The red mud particles are ball milled in a ball mill, washed and soaked after being taken out (the purpose of washing and soaking is to desorb impurities), dried in an oven at 120°C, and then passed through a 60-mesh sieve to take dry fine red mud particles for later use;

[0030] B. Put the shale in an oven to dry at 120°C, crush the dried shale in a mortar, pass through a 60-mesh sieve, and take the dried fine shale for later use;

[0031] C, dry fine red mud particles in step A, 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 120°C in an oven for 24 hours;

[0033] E. Put the raw material 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°C for 30 minutes, th...

Embodiment 3

[0036] A. The red mud particles are ball milled in a ball mill, washed and soaked after being taken out (the purpose of washing and soaking is to desorb impurities), dried in an oven at 120°C, and then passed through a 60-mesh sieve to take dry fine red mud particles for later use;

[0037] B. Put the shale in an oven to dry at 120°C, crush the dried shale in a mortar, pass through a 60-mesh sieve, and take the dried fine shale for later use;

[0038] C, the dry fine red mud 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 120°C in an oven for 24 hours;

[0040] E. Put the raw material 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°C for 30 minutes,...

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PUM

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Abstract

The invention relates to a red mud based particle electrode of a three-dimensional electrode reactor and a preparation method thereof; the red mud based particle electrode comprises the following components by weight: red mud, shale, a pore forming agent and an activating agent, dry fine red mud particles are 50-60%, dry fine shale is 10-20%, the pore forming agent is 10-20%, and the activating agent is 10-20%. The red mud based particle electrode prepared from the Bayer red mud, effective ingredients in the Bayer red mud can be fully used, the value of by-product of aluminum industry is increased, a new way of reduction and reclamation of the Bayer red mud can be effectively opened, the environment pollution problem brought by the Bayer red mud can be eliminated, and the occupied area is reduced. The red mud based particle electrode prepared from the Bayer red mud as a main raw material, has product performance meeting industry standards and is consistent with recycling economy, saving energy and emission reduction policy in China.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a red mud-based particle electrode for treating refractory organic matter in urban sewage and a preparation method thereof. Background technique [0002] Red mud is a very fine-grained strong alkaline solid waste discharged from the aluminum industry in the process of refining alumina. It is red because it contains iron oxide, so it is called red mud. China is the world's fourth largest producer of alumina and discharges millions of tons of red mud every year. At this stage in our country, there are still a large amount of red mud that cannot be effectively used. Stacking in the yard not only takes up a lot of land, but also red mud is an alkaline substance. Long-term stacking will alkalize the land, pollute the groundwater, and cause environmental pollution. Therefore, the comprehensive utilization of red mud is becoming an increasingly important topic, and it is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C04B38/00C02F103/30
CPCC02F1/461C02F1/46109C02F2001/46133C04B38/0022
Inventor 于衍真冯岩谭娟胡栗郭玉中范丽莎
Owner UNIV OF JINAN