1970
DOI: 10.1002/jctb.5010200607
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Petrographic and thermal evaluation of dolomites for the manufacture of magnesium oxychloride cement

Abstract: In the preparation of magnesium oxychloride cement from MgO and MgC12.6Ha0 solution, MgO is sometimes replaced by partially calcined dolomite, MgO.CaC0,. In this paper, the suitability of dolomites for this purpose was studied by use of petrographic, d.t.a. and X-ray diffraction techniques. It is shown that for making good oxychloride cement, the dolomite should be compact and microcrystallhe. Impurities such as siderite, haematite, magnetite and clayey matter which are generally present in dolomites, form a c… Show more

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Cited by 7 publications
(3 citation statements)
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“…The presence of impurities in dolomite has been shown to severely affect its reaction and usability as a source of MgO, 335 and the avoidance of free CaO formation is imperative, as even as little as 2 wt % of this impurity is detrimental to the service life of MOC binders. 328 Other attempts to improve MOC binders include coformation of other oxychloride salts.…”
Section: Cost-effective Productionmentioning
confidence: 99%
“…The presence of impurities in dolomite has been shown to severely affect its reaction and usability as a source of MgO, 335 and the avoidance of free CaO formation is imperative, as even as little as 2 wt % of this impurity is detrimental to the service life of MOC binders. 328 Other attempts to improve MOC binders include coformation of other oxychloride salts.…”
Section: Cost-effective Productionmentioning
confidence: 99%
“…In the aforementioned studies, the raw materials used to produce MOC were acquired from industrial suppliers, whereas other researchers have used magnesite (MgCO 3 ) ore to produce one of the raw materials (MgO) used to prepare MOC (El-Mahllawy et al 2012;Tan et al 2015). The suitability of dolomite ore for producing MOC was evaluated by Kacker et al (1970).…”
Section: Introductionmentioning
confidence: 99%
“…The reactivity of MgO is largely affected by its particle size and size distribution, 15,16 surface defect and surface area, 17,18 as well as thermal history 19–21 . Measurements of the above properties of magnesia are time consuming, costly, and sometimes even impossible because of the lack of information and proper instruments at the sites of end applications.…”
Section: Introductionmentioning
confidence: 99%