Overview on the Trend Analysis for the Dealkalization Technology of Bauxite Residues

Pyeong Seop Seo; Man Seung Lee

doi:10.7844/kirr.2023.32.1.3

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2023 Vol.32, Issue 1 Next Page

Article Review

Overview on the Trend Analysis for the Dealkalization Technology of Bauxite Residues 보크사이트 제련 잔재물의 중화기술 동향 분석

28 February 2023. pp. 3-12

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Abstract

Bauxite residues represent industrial wastes that have been accumulating over the past 120 years since the beginning of the alumina industry. They are typically classified as harmful substances owing to their strong alkalinity and salinity characteristics. These residues, with quantities steadily increasing by more than 150 million tons annually worldwide, are recycled into various industrial materials using dealkalization processing. This study investigates the generation process of alkaline substances in bauxite smelting and the recent techniques adopted for controlling their alkalinity. The properties of bauxite residues are known to vary depending on the raw mining and digestion methods. Thus, the dealkalization process must be selected considering the type of alkaline material, local environment, and infrastructure.

Keywords

bauxite residues

red mud

dealkalization

neutralization

alkalinity

보크사이트 잔재물은 알루미나 산업의 시작과 함께 120년간 지속적으로 발생하고 있는 제련 부산물로 높은 알칼리성과 염도 특성으로 유해물질로 분류되고 있다. 전 세계적으로 연간 1억 5천만톤 이상 꾸준히 증가 중인 잔재물을 다양한 산업 소재로 재활용하기 위해서는 중화 처리가 필요하다. 본 논문에서는 보크사이트 제련과정에서 알칼리성 물질의 형성과정과 최근 수십 년 동안 잔재물의 알칼리도 관리를 위한 몇 가지 기술을 분석하였다. 보크사이트 잔재물은 원광 및 제련 방법에 따라 다양한 특성을 갖기 때문에 알칼리성 물질의 종류, 지역 환경 및 인프라를 고려하여 중화공정을 선택하는 것이 바람직하다.

키워드

보크사이트 잔재물

레드머드

탈알칼리화

중화

알칼리도

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 32
No :1
Pages :3-12
Received Date : 2023-01-17
Revised Date : 2023-01-30
Accepted Date : 2023-02-06
DOI :https://doi.org/10.7844/kirr.2023.32.1.3

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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