Physico-chemical characteristics of cement produced using sulphur bearing fuels in the black meal process for cement manufacture

Barkakati, Pranab; Bordoloi, D. N.; Bandyopadhyay, Sibdas; Borah, Utpal

doi:10.1016/0008-8846(93)90179-d

Cited by 4 publications

(6 citation statements)

References 3 publications

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“…The volatile matter contents in the carbonized nodules are found to be lying above the preferred limit (<10%) required for using as coke Table 1 Screen analysis of the raw coal samples and their size-wise physico-chemical characteristics (as received, weight %). breeze in the VSK technology for production of cement [22,23]. However, coals with volatile matter of 16-18% and around 40% volatiles were also satisfactorily used in the process for production of cement by VSK technology [23].…”

Section: Physico-chemical Properties Of Coal and Carbonized Nodulesmentioning

confidence: 99%

“…breeze in the VSK technology for production of cement [22,23]. However, coals with volatile matter of 16-18% and around 40% volatiles were also satisfactorily used in the process for production of cement by VSK technology [23]. The reduction of volatile matter of the carbonized nodules can be achieved by increasing the coking period and maintaining the oven temperature uniformly during carbonization [2].…”

Section: Physico-chemical Properties Of Coal and Carbonized Nodulesmentioning

confidence: 99%

“…The Vertical Shaft Kiln (VSK) technology has been recently introduced for the production of cement due to its low cost of investment, high capacity of production, and less space required to be set up [22,23]. The VSK technology uses the black meal process in which low volatile matter, low ash, and high calorific value coke breeze are required together with the other standard components used for the production of cement [22,23].…”

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

“…The VSK technology uses the black meal process in which low volatile matter, low ash, and high calorific value coke breeze are required together with the other standard components used for the production of cement [22,23].…”

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

“…The chemical composition of the carbonized nodule ash, limestone, clay, rice husk ash (RHA), and clinkers are reported in Tables 3 and 4. During this laboratory scale clinkering process, it is found that the present mixture made from these carbonized nodules is suitable for the formation of cement when heated at a temperature of 1410°C, which is furthermore within the standard limit range of 1350-1450°C [22,23]. It is also observed that the chemical compositions of the clinker obtained in this process are almost identical with the chemical composition of standard clinkers (BS 12-78, ASTM-81) ( Table 4) [41,42].…”

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

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Agglomeration of low rank Indian coal fines with an organic binder and the thermal behavior of the agglomerate produced: Part I

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Section: Physico-chemical Properties Of Coal and Carbonized Nodulesmentioning

confidence: 99%

Section: Physico-chemical Properties Of Coal and Carbonized Nodulesmentioning

confidence: 99%

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

Section: Suitability Of Carbonized Nodules For Manufacturing Of Cemenmentioning

confidence: 99%

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Mineralogical study of high SO3 clinker produced using waste gypsum board in a cement kiln

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Comportement physico-chimique de mélanges à base de poussières de four de cimenterie et de cendres volantes

Bellaloui¹,

Tagnit-Hamou²,

Ballivy³

2002

Can. Geotech. J.

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La valorisation des poussières de four de cimenterie en vue de leur exploitation en tant que barrière environnementale requiert, entre autres, l'ajout de cendres volantes afin d'améliorer les différentes propriétés nécessaires à une meilleure mise en place et assurer leur efficacité à long terme. En mettant à profit différentes techniques expérimentales, une attention particulière est accordée au comportement physico-chimique de différentes poussières de four associées aux cendres volantes. Selon la nature des ajouts considérés, un comportement différent peut conditionner l'évolution des mélanges avec une incidence sur leur stabilité. En effet, cette étude a confirmé l'amélioration des propriétés physico-chimiques des poussières mises en interaction avec les cendres volantes riches en silices, et pauvres en chaux, ce qui laisse de bons augures quant à leur utilisation en tant que barrière environnementale. Par ailleurs, le suivi a permis une meilleure compréhension de certains mécanismes générés par les systèmes abordés. Ainsi, après hydratation et différentes transformations chimiques, des phases à caractère expansif tels que l'ettringite, le gypse, la syngénite et la portlandite, prennent naissance dans la pâte et conditionnent, par conséquent, le comportement des mélanges élaborés.Abstract: Enhancing the value of the cement kiln dust so as to use it as an environmental barrier requires, amongst other things, the addition of fly ashes in order to improve the different properties needed to insure a better placing and a long term efficiency. Taking advantage of different experimental techniques, particular attention was devoted to the physicochemical behaviour of different kiln dusts associated with the fly ashes. Depending on the nature of the added compound, a different behaviour may condition the evolution of the mixtures with an effect on their stability. Indeed, this study has confirmed the improvement of the physicochemical properties of the dusts interacting with the fly ashes rich in silica and poor in lime, which argues well for their use as an environmental barrier. Moreover, the follow up has led to a better understanding of certain mechanisms generated by the systems dealt with. Hence, after hydration and different chemical transformations, some expansive phases as the ettringite, gypsum, syngenite, and portlandite develop in the paste, and therefore condition the behaviour of the mixtures worked out.

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Physico-chemical characteristics of cement produced using sulphur bearing fuels in the black meal process for cement manufacture

Cited by 4 publications

References 3 publications

Agglomeration of low rank Indian coal fines with an organic binder and the thermal behavior of the agglomerate produced: Part I

Agglomeration of low rank Indian coal fines with an organic binder and the thermal behavior of the agglomerate produced: Part I

Mineralogical study of high SO3 clinker produced using waste gypsum board in a cement kiln

Comportement physico-chimique de mélanges à base de poussières de four de cimenterie et de cendres volantes

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