ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This process and parameters of fabricating light calcium carbonate from limestone werediscussed in the paper. Raw limestone in experiment comes from Luquan city, Hebei province. Theresults of chemistry and XRD analysis indicate that ingredient of this limestone is mainly calciumcarbonate, dolomite, silicon dioxide, which takes 83.81%, 11.03% and 1.67% separately, and a few ofother impurities. The process includes calcinations, assimilation, carbonation, drying and others. It wasascertainable that the time of calcinations exceeded 5 hours at 850~ 950[removed info] and loss of calcinations was42%. The time of assimilation was around 25 minutes at 70~90[removed info]The time of carbonation was about 30minutes at 50~90[removed info], and the airflow was about 160L/min and PH of latex after carbonation was 7.2~7.4.The light calcium carbonate product was obtained in experiment, whose fine sphere size was about 10nanometer, with the agglomeration particle size 2~3μm. The degree of white improved from 42 to 76. Asa result, the comprehensive properties of the produce were improved consumedly
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1843.pdf
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