Subject of this paper is to investigate the effect of ZnO during the sintering process of cement raw meal. The effect was studied by means of differential scanning calorimetry and X-ray diffraction. Besides, the rate of CaO consumption during the sintering of raw meals was measured. Final discussion
Investigation of the effect of Mo, Nb, W and Zr oxides on the formation of portland cement clinker
โ Scribed by G. Kakali; V. Kasselouri; G. Parissakis
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 551 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
Subject of this paper is the effect of MoO~, Nh~O=, WO~ and Zr02 on the properties of clinker originated from raw mixes containins the above oxides. This effect was studied by means of differential scanning calorimetry, X-Ray diffraction, optical and scanning electron microscopy. Final discussion concerns the action of the above oxides on raw material sintering and the resulting effects on the microstructure and properties of produced clinker.
๐ SIMILAR VOLUMES
## ABSTP~ACT The relationship between specific power consumption (Id.~/t) and Blaine fineness attained during grinding of the Portland clinker is represented by an exponential function. This function varies by stages. For each stage the following equation may be written: In k~.~/t = a + bS, where
The mineralizing effect of 0.5% F-as CaF on the high-temperature reactions in the quaternary system CaO-Al$OS-Fe20S-Si02 was studied in the presence of minor amounts of MgO and K2SO4. The partitioning of fluorine between the calcium aluminate and calcium silicate phases was detennined in relation to
Na20 and K20 in absence of S03 are incorporated preferentially into the C3A phase of portland clinker altering its modification from cubic to orthorhombic. The hydration of Na20 doped C3A is retarded and that of K20 doped C3A accelerated in the resultant cements. The progress of C3S hydration and st
In as series of cements made out of clinkers with variable C3A/C4AF ratios and containing different amounts of gypsum, the strength development and the composition of the hydrated material were studied. For a single clinker composition the obtained strength appears to be just a function of porosity.
Both the chemical and phase compositions of the crystalline interstitial phases in clinker vary significantly depending on the cooling rate and NaaO content of clinker. In slowly cooled clinker the calcium aluminoferrite phase is definitely lower in amount and Al~Oa/Fe~Oa ratio than in rapidly coole