The Effect of Calcination Time upon the Slaking Properties of Quicklime

Carran, Dorn; Hughes, John Jay; Leslie, A. G.; Kennedy, Craig J

doi:10.1007/978-94-007-4635-0_22

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…However, it is shown that quicklime which calcined at 1200 °C was experiencing a decrement in slaking reaction temperatures. A lower slaking temperature pattern was recorded and the reaction of slaking was required much longer time to be completed for quicklime calcined at 1200 °C compared to 1100 °C which agrees with a research done by Dorn Carran et al [22]. It can be concluded that quicklime calcined at 1100 °C are highest reactivity compared to the others.…”

Section: Resultssupporting

confidence: 88%

Reactions of Limestone on the Slaking Process under Different Conditions of Parameters

Darus

Noorliyana

Rahmat

et al. 2015

MSF

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The reaction of limestone in the slaking process has been studied under different conditions of parameters such as calcination times, soaking times and particle sizes. The reactivity of quicklime was determined by recording temperature rise and the rate of temperature rise during the slaking process. The obtained ‘milk of lime’ is characterized using instrumental measurements such as X-ray fluorescence (XRF) to identify the chemical composition that exists in the sample. In this paper, the quicklime used during slaking test indicates the differential of temperature pattern which influences by quicklime particle sizes, calcination temperatures and soaking times. Results indicate that the optimum and efficient distribution of heat transfer and thermal decomposition onto quicklime can be obtained by calcining at 1100 °C with 60 minutes of soaking time samples which produced a highly porous structure towards higher reactivity of quicklime.

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Section: Resultssupporting

confidence: 88%

Reactions of Limestone on the Slaking Process under Different Conditions of Parameters

Darus

Noorliyana

Rahmat

et al. 2015

MSF

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“…The decreasing trends of LOI in this study also can reflect that the calcination rates were increased (data not shown), thus a high purity of quicklime can be obtained. However, a study by Carran et al, (2012) showed that LOI in the observed quicklime after calcination was 30-42%. This might be due to the limestone characteristics (e.g., the presence of crystalline calcite veins) which can affect the LOI level and calcination rate.…”

Section: Loi and Co2 Mass Contentmentioning

confidence: 96%

The Effect of Calcination Temperature on The Quality of Quicklime from Different Limestone Mines in West Sumatera, Indonesia

Desmiarti

Sari

Firdaus

et al. 2022

J. appl. agricultural sci. technol.

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Quicklime is a widely used industrial chemical and its characteristics may be affected by the limestone characteristics and calcination temperature. The present study investigated the quicklime characteristics obtained from limestone after calcination at different temperatures (800, 900, and 1000 ℃) from six geological-different mines in West Sumatera, Indonesia. X-ray fluorescence (XRF) analysis was performed to characterize the elemental compositions in limestone and quicklime. The stoichiometric evaluation was examined to compare the obtained carbon dioxide (CO2) from experimental and theoretical results during calcination. Based on elemental composition from XRF analysis, all the investigated limestones are very pure limestones, with impurities of less than 1%. The level of calcium oxide (CaO) after calcination at 1000℃ increased to more than 90% for all investigated limestone. The obtained CaO and CO2 mass after calcination at 1000℃ for 5 h were more than 70 and 60 grams, respectively. However, the experimental results on CaO and CO2 mass were 5–12% less than theoretical mass, reflecting the partial decomposition of calcium carbonate during the calcination process.

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“…The use of mortars has been well documented since ancient times. Mud and clay were likely the first binders, given not only their wide availability but also the low technology required for their application [1,2]. Lime-based mortars have been used since at least 6000 B.C.…”

Section: Introduction 1state Of Art and Aims Of Researchmentioning

confidence: 99%

“…During the later centuries, air lime mortars were adopted by several civilizations, such as the Egyptians, Minoans, Greeks, Romans, etc. The raw materials, the calcination technologies and the building techniques evolved in different ways from one locality to another, leading each place to obtain its own style and best practices [2]. A plethora of papers deals with historical mortars, stones, and other geomaterials, with all of their related aspects, including archaeological inferences and significance [5][6][7][8][9][10][11][12][13][14], raw materials provenance [15][16][17][18][19][20][21][22][23][24], the chemical, mineralogical and physical properties [25][26][27][28][29][30][31][32], degradation issues [33][34][35][36][37][38], and conservation/restoration techniques [39][40][41][42][43][44][45].…”

Section: Introduction 1state Of Art and Aims Of Researchmentioning

confidence: 99%

Lime and Cement Plasters from 20th Century Buildings: Raw Materials and Relations between Mineralogical–Petrographic Characteristics and Chemical–Physical Compatibility with the Limestone Substrate

et al. 2022

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This paper deals with the “modern” plaster mortars based on air lime, hydraulic lime, and cement used between the 1950s and 1990s of the last century, taking, as a case study, a historical building of the Cagliari city whose foundations and ground floor are cut into in-situ limestone. Different plaster layers (i.e., arriccio and intonachino, paint), applied on the excavated limestone walls, were collected from cave-room. All samples were analysed by optical and electron (SEM-EDS) microscopy and X-ray diffractometry (XRD) in order to define their microstructures, textures and compositional features. In addition, real and bulk density, water and helium open porosity, water absorption kinetic, and saturation index were measured. By microscopic imaging analyses, the binder/aggregate ratio as vol.% was determined. Results revealed that cement mortars, composed mainly of C-S-H, C-A-H, and C-F-H phases, given their high hydraulicity, low open porosity, and a rigid behaviour, showed a good chemical but not physical–mechanical adherence, as they were often found detached from the substrate and frequently loaded with salt efflorescence. On the contrary, the hydraulic lime-based mortars, characterised by a binder composed of C-S-H and C-A-H phases and calcite derived from the portlandite carbonation, showed a greater affinity with limestone substrate and other plasters. Thus, they are more suitable to be used as a repair mortar, showing a long durability on the time. The thin air lime-based plasters (intonachino) showed a good adhesion to the substrate, exerting their coating function better than the harder, cement-based mortars. Lime-based wall paints have a good chemical adhesion and adaptability to the irregular surface of the substrate, due to low thickness of lime paint layers (<1 mm) that confers an elastic physical behaviour.

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The Effect of Calcination Time upon the Slaking Properties of Quicklime

Cited by 9 publications

References 7 publications

Reactions of Limestone on the Slaking Process under Different Conditions of Parameters

Reactions of Limestone on the Slaking Process under Different Conditions of Parameters

The Effect of Calcination Temperature on The Quality of Quicklime from Different Limestone Mines in West Sumatera, Indonesia

Lime and Cement Plasters from 20th Century Buildings: Raw Materials and Relations between Mineralogical–Petrographic Characteristics and Chemical–Physical Compatibility with the Limestone Substrate

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