Recovery of Steelmaking Slag and Granite Waste in the Production of Rock Wool

Alves, Joner Oliveira; Espinosa, Denise Crocce Romano; Tenório, Jorge Alberto Soares

doi:10.1590/1516-1439.324414

Cited by 14 publications

(10 citation statements)

References 21 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such proprieties are enough to contain a structural fire for several hours (Alves et al, 2015). The produced materials devitrified at temperatures of 796-820 °C, therefore these are within the recommended devitrification temperature range.…”

Section: Characterization Of Glass and Rock Woolsmentioning

confidence: 82%

“…Several authors have mentioned that glass and rock wools are inorganic and vitreous materials that present an amorphous structure (Luoto, et al, 1998;Alves et al, 2015). Therefore, the glass and rock wools produced with marble and granite wastes presented the same structural characteristic from the conventional glass and rock wools.…”

Section: Characterization Of Glass and Rock Woolsmentioning

confidence: 99%

“…Alumina does not form glass under normal conditions, however when added to an alkali-silicate glass, it may assume a tetrahedral coordination similar to silica, i.e. becomes a glass former (Alves et al, 2015;Bansal e Doremus, 1986). Considering the alumina as a glass former (i.e.…”

Section: Characterization Of Glass and Rock Woolsmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of mineral wools obtained from ornamental rock wastes

et al. 2018

Self Cite

View full text Add to dashboard Cite

The study aimed to characterize the mineral wools obtained from wastes of the cutting step of marble and granite, in order to evaluate the possibility of their use on an industrial scale. Mixtures of marble and/or granite wastes were prepared in order to reach the chemical composition of rock and glass wools. The batches were melted in an electric arc furnace in laboratory scale at 1450°C and casted with water, in order to obtain a higher cooling rate. Characterization work was performed in batches that formed vitreous material, and with superior incorporation of the residues: 11.7% and 14.6% of marble waste with glass wool and rock wool, respectively; 78.3% and 91.6% of an association of marble and granite wastes with glass wool and rock wool, respectively. Computational thermodynamics was used in order to obtain the main phases at 800°C and determine the liquid and solid content at 1400, 1450 and 1500°C. In addition, the materials obtained were characterized via chemical analysis using X-ray fluorescence, DTA, X-ray diffraction and SEM. The results indicate that the marble and granite waste are composed mainly of CaO (34.7 wt.%) and SiO 2 (66.3 wt.%), respectively. An amorphous crystalline structure was obtained in all tests, indicating that this material can be used as an insulation material. The crystallization temperatures were determined around 800°C.

show abstract

Section: Characterization Of Glass and Rock Woolsmentioning

confidence: 82%

Section: Characterization Of Glass and Rock Woolsmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of mineral wools obtained from ornamental rock wastes

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, a closer look at Table 2 would reveal that most waste rock wool consists of three major components—silicon dioxide (SiO 2 ), calcium oxide (CaO), and aluminum oxide (Al 2 O 3 ). SiO 2 is the major component that accounts for around 38.7–60.1% of the total weight in most cases except in the two studies [ 47 , 51 ]. For CaO and Al 2 O 3 , the majority weight ratio may vary from 10 to 46.9% and 0.8 to 18.6%, respectively.…”

Section: Waste Characterizationsmentioning

confidence: 99%

Waste Mineral Wool and Its Opportunities—A Review

et al. 2021

View full text Add to dashboard Cite

Massive waste rock wool was generated globally and it caused substantial environmental issues such as landfill and leaching. However, reviews on the recyclability of waste rock wool are scarce. Therefore, this study presents an in-depth review of the characterization and potential usability of waste rock wool. Waste rock wool can be characterized based on its physical properties, chemical composition, and types of contaminants. The review showed that waste rock wool from the manufacturing process is more workable to be recycled for further application than the post-consumer due to its high purity. It also revealed that the pre-treatment method—comminution is vital for achieving mixture homogeneity and enhancing the properties of recycled products. The potential application of waste rock wool is reviewed with key results emphasized to demonstrate the practicality and commercial viability of each option. With a high content of chemically inert compounds such as silicon dioxide (SiO2), calcium oxide (CaO), and aluminum oxide (Al2O3) that improve fire resistance properties, waste rock wool is mainly repurposed as fillers in composite material for construction and building materials. Furthermore, waste rock wool is potentially utilized as an oil, water pollutant, and gas absorbent. To sum up, waste rock wool could be feasibly recycled as a composite material enhancer and utilized as an absorbent for a greener environment.

show abstract

“…The raw material is melted at temperatures above 1400 °C and then spun on abrupt quenching with water or liquid nitrogen, generating the mineral rock fibers that are blended into a binder mixture, usually phenol-formaldehyde resin [16], [17]. The choice of the binder mixture depends on the mechanical properties desired [17].…”

Section: A Mineral Originmentioning

confidence: 99%

The Importance of Thermal Insulation: Characteristics, Properties and Applications

Grosso¹,

Freitas²

2017

IJERMT

View full text Add to dashboard Cite

Abstract-hermal insulation is used to ensure that there is no loss or gain of heat in a medium, and therefore must be very well chosen considering the properties, applications and costs. It is used for protection, prevention, comfort and economy. The choice of insulation, the thickness and the method of application are extremely important to obtain good technical and economic results. The objective of the present article was to compile characteristics and properties of thermal insulation, exposing its applications in thermal products companies. Thus, information and research results were collected from articles, and grouped into insulation originating from animal, synthetic, vegetal, animal, vacuum compounds and gases. A questionnaire was also applied to manufacturers and users of thermal insulation, reporting on each insulation and its applications. The differences of each thermal insulation, its advantages and applications are noted. There is no insulator that fully has all the advantageous properties and characteristics. Therefore, the choice of the insulation should be thorough, opting for one which shows greater propensity to the desired application.

show abstract

Recovery of Steelmaking Slag and Granite Waste in the Production of Rock Wool

Cited by 14 publications

References 21 publications

Characterization of mineral wools obtained from ornamental rock wastes

Characterization of mineral wools obtained from ornamental rock wastes

Waste Mineral Wool and Its Opportunities—A Review

The Importance of Thermal Insulation: Characteristics, Properties and Applications

Contact Info

Product

Resources

About