Experimental investigation and modelling of heat capacity, heat of fusion and melting interval of rocks

Leth-Miller, Rasmus; Jensen, Anker Degn; Glarborg, Peter; Jensen, Lotte Bjerregaard; Hansen, Peter Bent; Jørgensen, Sten Bay

doi:10.1016/s0040-6031(03)00248-x

Cited by 21 publications

(21 citation statements)

References 14 publications

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“…The chemical composition of diabase is entered into a min-eral norm calculator [12] known as a CIPW [11] A previous study aimed to model the melting behaviour and melting energy requirement of individual mineral materials used for stone wool production. However, the predictive capability of the model turned out to be limited [13].…”

Section: Introductionmentioning

confidence: 99%

Melting behaviour of raw materials and recycled stone wool waste

Schultz-Falk

Agersted

Jensen

et al. 2018

Journal of Non-Crystalline Solids

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Stone wool is a widely used material for building insulation, to provide thermal comfort along with fire stability and acoustic comfort for all types of buildings. Stone wool waste generated either during production or during renovation or demolition of buildings can be recycled back into the stone wool melt production. This study investigates and compares the thermal response and melting behaviour of a conventional stone wool charge and stone wool waste. The study combines differential scanning calorimetry (DSC), hot stage microscopy (HSM) and X-ray diffraction (XRD). DSC reveals that the conventional charge and stone wool waste have fundamentally different thermal responses, where the charge experiences gas release, phase transition and melting of the individual raw materials. The stone wool waste experiences glass transition, crystallization and finally melting. Both DSC and HSM measurements indicates that the wool waste initiates melting at a lower temperature than the conventional charge. Also DSC measurements show that the wool waste requires less energy for heating and melting than the conventional charge, making stone wool waste recycling desirable both for environmental and for process purposes.

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Section: Introductionmentioning

confidence: 99%

Melting behaviour of raw materials and recycled stone wool waste

Schultz-Falk

Agersted

Jensen

et al. 2018

Journal of Non-Crystalline Solids

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“…The parameter n varies from 14.4 (B 2 O 3 ) to 31.7 (Aroclor), while the parameter p varies from 11.8 (B 2 O 3 ) to 23.1 (Aroclor). The parameter n is systematically higher than p. Table 4 Specific heat capacity (1200-1850 K) [42,43], fragility index m, fitting parameter p (from this work) and number of escape channels Z (from Eq. (27)) of several liquid oxides.…”

Section: Discussionmentioning

confidence: 92%

“…(26), C l p should linearly increase with an increase in liquid fragility and the average coordination number of molecules in the corresponding liquid. The heat capacities of eight oxide liquids [42,43], together with parameters m and p determined in the current work, are listed in Table 4. The tendency for C l p to increase with m is clearly shown.…”

Section: Avramov Approximationmentioning

confidence: 99%

Description of the fragile behavior of glass-forming liquids with the use of experimentally accessible parameters

Senkov

Miracle

2009

Journal of Non-Crystalline Solids

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“…Расчет энтальпии расплава в этом случае осуществляется простым добавлением к уравнению (3) для твердой фазы скрытой теплоты плавления: Необходимые для расчетов дополнительные сведения мы извлекли из следующих источников (База данных http://geopig.asu. edu/sites/default/files/slop07.dat, Наумов и др., 1971;Bouhifd et al, 2007;Leth-Miller et al, 2003;Richet, Bottinga, 1984;Robie, Hemingway, 1995;Robie et al, 1984;Sugawara, Akaogi, 2003;Sugawara, Akaogi, 2004).…”

Section: расчет энтальпии расплавов в стандартном состоянии (29815 Kunclassified

A technique for calculating the enthalpy of silicate melt of arbitrary composition

Бычков

Koptev–Dvornikov

2019

Петрология

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The Kirchhoff equation was used to develop a method for calculating the enthalpy of silicate melt of any arbitrarily chosen composition with regard for the latent heat of fusion. To do this, the following two problems were solved: (a) the coefficients of the heat capacity equation of a silicate melt were revised and (b) the partial molar enthalpies of formation of melt components from elements at standard state were determined. The uncertainty in calculating the heat capacity of silicate melt at 95% significance level is no greater than ± 0.7 J · mol–1 · K–1. A weak but statistically significant temperature dependence of the heat capacity was determined. The enthalpies of melts calculated using the method are comparable with the values obtained by other techniques. The calculation error at 95% significance level is ±2 relative %.

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Experimental investigation and modelling of heat capacity, heat of fusion and melting interval of rocks

Cited by 21 publications

References 14 publications

Melting behaviour of raw materials and recycled stone wool waste

Melting behaviour of raw materials and recycled stone wool waste

Description of the fragile behavior of glass-forming liquids with the use of experimentally accessible parameters

A technique for calculating the enthalpy of silicate melt of arbitrary composition

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