Research progress on preparation of sintered magnesia by high temperature calcination of magnesite

ZHANG Qingjin; GUO Hao; FU Liangliang; FENG Ying; XU Guangwen; BAI Dingrong

doi:10.11949/0438-1157.20260807

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Research progress on preparation of sintered magnesia by high temperature calcination of magnesite

更新时间：2026-08-21

- Research progress on preparation of sintered magnesia by high temperature calcination of magnesite
- CIESC Journal (2026)
- 作者机构：
  
  1.沈阳化工大学机械与动力工程学院，辽宁沈阳 110142
  2.沈阳化工大学资源化工与材料教育部重点实验室，辽宁沈阳 110142
  2.鄂尔多斯实验室，内蒙古鄂尔多斯 017010
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260807
  CLC： TQ132.2
- Received：12 June 2026，
  
  Revised：2026-08-20，
  
  Accepted：21 August 2026，
- 稿件说明：
移动端阅览
ZHANG Qingjin, GUO Hao, FU Liangliang, et al. Research progress on preparation of sintered magnesia by high temperature calcination of magnesite[J/OL]. CIESC Journal, 2026.
DOI：

ZHANG Qingjin, GUO Hao, FU Liangliang, et al. Research progress on preparation of sintered magnesia by high temperature calcination of magnesite[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260807.

摘要

烧结镁砂作为生产碱性耐火材料的基础原料，广泛应用于钢铁、有色、建材、化工等高温工业以及国防军工、航空航天等高科技领域。竖窑高温煅烧菱镁矿制备烧结镁砂工艺存在传热传质速率低、温度分布不均等技术缺陷，导致所生产的烧结镁砂致密性差、能耗高，促使我国高密度优质烧结镁砂高度依赖进口，严重制约了高温工业及高科技产业的发展。为此，本综述在概述高温竖窑煅烧菱镁矿制备烧结镁砂工艺的基础上，分析了煅烧方式、烧结温度、坯料活性、成型压力及添加剂等因素对烧结镁砂致密度的影响；剖析了传统竖窑高温煅烧大球团工艺难以制备高密度烧结镁砂的技术原因，提出了高温流态化技术制备高密度烧结镁砂的新方法；并展望了传统竖窑高温煅烧菱镁矿及高温流态化制备高密度烧结镁砂的未来研究方向，以期为高效、低能耗生产高密度优质烧结镁砂提供理论依据和技术参考。

Abstract

As a fundamental raw material for basic refractory production

sintered magnesia has been widely utilized in high-temperature industries such as steel

non-ferrous metals

building materials

and chemicals

as well as in defense

aerospace

and other high-tech sectors. The production of sintered magnesia via shaft-kiln calcination of magnesite suffers from inherent technical drawbacks

including low heat and mass transfer rates and non-uniform gas-solid flow and temperature distribution

which lead to poor densification of the final product and excessive energy consumption. These limitations have rendered China heavily dependent on imports of high-density premium sintered magnesia

severely restricting the development of high-temperature industries and advanced manufacturing sectors. To address these challenges

this review first provides an overview of the high-temperature calcination process for sintered magnesia production from magnesite

and then systematically analyzes the effects of calcination mode

sintering temperature

raw material reactivity

compaction pressure

and additives on the densification behavior of sintered magnesia. The underlying technical barriers that hinder the production of high-density sintered magnesia in conventional shaft kilns employing large pellets are critically examined

based on which a novel approach utilizing high-temperature fluidization technology is proposed. Finally

future research directions are outlined for both conventional shaft-kiln calcination and the emerging high-temperature fluidization route

with the aim of providing theoretical basis and technical guidance for the energy-efficient production of high-density premium sintered magnesia.

关键词

Keywords

references

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