Paper Title:
Study of Carbonizing Processes for Sintered Dolomite
  Abstract

It is the easy and widely used way to make light calcium carbonate and magnesium carbonate from dolomite by carbonizing process. During this process, the dolomite is calcined at different temperature, from 700°C to 950°C to get the mixture including either calcium carbonate and magnesia or calcia and magnesia. Then the mixture is blended with water in different temperature from room temperature to 80°C. As a result, it is supposed to get calcium hydroxide and magnesium hydroxide, but XRD analysis reveals that it is not accord with the theory. Magnesium hydroxide can not be obtained during this reaction. After the carbonization process, the calcium carbonate and a kind of mixture which is composed with different crystal phase of Mg5(CO3)4(OH)2[H2O]4 have been produced, instead of magnesium carbonate. The magnesia is gotten when the mixture is calcined at 450~750°C.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2552-2555
DOI
10.4028/www.scientific.net/KEM.336-338.2552
Citation
J. H. Xue, M. F. Han, Q. Y. Wang, "Study of Carbonizing Processes for Sintered Dolomite", Key Engineering Materials, Vols. 336-338, pp. 2552-2555, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Min Yang, Qing Chen Sun
Abstract:Experiments were performed to investigate the properties of fly ash-calcined phosphogypsum (PG) cementitous materials with PG different...
816
Authors: Xiao Yan Li, Zhi Juan Hu, Xu Chu Ye, Wei Min Yu, Cong Xi Tao
Abstract:The sulfation behavior of calcined raw meal was investigated in a laboratory fix-bed reactor under conditions typically for SO2 capture in...
98
Authors: Jin Feng Xia, Cai Xia Li, Zheng Wang, Dan Yu Jiang, Qiang Li
Abstract:Nano-sized 8mol% MgO-PSZ powder was prepared via coprecipitation, Afterwards, the prepared powders were characterized by XRD and SEM...
89
Authors: Jun Ji, Yao Ding, Yi Gang Ding, Hu Chen
Chapter 5: Chemical System Engineering
Abstract:Novel technology for producing iron oxide red from bypoduct ferrophosphorus was proposed. The conversion rate of Fe can reach 91% when the...
893
Authors: Kamlesh Kumar, S.K. Sharma
Chapter 2: Solid State Materials, Alloys, Reiforced and Functional Materials
Abstract:Caustic Magnesia is also known as reactive magnesia. In the present study, process has been developed for recovery of caustic magnesia from...
173