Secondary sintering cement clinker in so2 atmosphere: Composition and structure effects

Rui Kang, Suhua Ma, Xiaodong Shen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A gas-solid reaction method was adopted in this work to explore the influence of SO2 gas on the composition and structure of secondary sintering cement clinker. In this process, the Portland cement clinker was secondarily sintered at different temperatures and a mixed gas mixed with SO2 was introduced simultaneously in a tube furnace. X-ray powder diffraction (XRD) combined with rietveld refinement was used to determine the phase composition of the cement clinker and the corresponding phase content. The experimental results showed that the increase in temperature conduced to increasing the content of SO3 solid solution, C2S and CaO, but decreasing the C3S content. Moreover, as the ratio of SO3/MgO (by mass) increases, the content of M1-type alite also increased. And the result of hydration heat release was positively correlated with the content of alite in the clinker. If the content of alite was low, the heat flow was low, as well as the cumulative heat, and vice versa.

Original languageEnglish
Title of host publicationMaterials in Machinery and Construction
EditorsCai Jun Shi, Jue Shi Qian, Xi Gao Jian, Di Tao Niu, Fu Sheng Pan, Lang He
PublisherTrans Tech Publications Ltd
Pages208-213
Number of pages6
ISBN (Print)9783035718119
DOIs
StatePublished - 2021
Event2nd Conference on Research and Application of Advanced Cementitious Materials and Advanced Materials Forum, CRAACM and AMF 2020 - Xi'an, China
Duration: 1 Oct 2020 → …

Publication series

NameMaterials Science Forum
Volume1036 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2nd Conference on Research and Application of Advanced Cementitious Materials and Advanced Materials Forum, CRAACM and AMF 2020
Country/TerritoryChina
CityXi'an
Period1/10/20 → …

Keywords

  • Alite
  • Cement clinker
  • Gas-solid reaction
  • Structure

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