Investigation of the usage of centrifuging waste of mineral wool melt (CMWW), contaminated with phenol and formaldehyde, in manufacturing of ceramic products

Kizinievič, Olga; Balkevičius, Valdas; Pranckevičienė, Jolanta; Kizinievič, Viktor

doi:10.1016/j.wasman.2014.01.010

Cited by 23 publications

(17 citation statements)

References 17 publications

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“…Because of the importance of reducing the CDW waste, previous studies have considered mineral wool waste to be reused in ceramics [3,4], cement composites [5][6][7], fiber-based composites [8], gypsum board, [9][10][11], and tiles [12]. In some cases, the mineral wool waste can also be recycled back to the manufacturing process by briquetting [13,14].…”

Section: Introductionmentioning

confidence: 99%

Rockwool waste in fly ash geopolymer composites

Kinnunen

Yliniemi

Talling³

et al. 2016

J Mater Cycles Waste Manag

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Mineral wool waste is often considered unrecyclable, due to its difficult-to-process physical composition, and potential microbial contamination in the post-consumer products. Total mineral wool waste generated in the EU is growing continuously and is currently over 2.3 Mt annually, volumetrically accounting for the largest single waste source in some landfills. Here, we take advantage of the alkali-soluble nature of the rockwool waste, and use a combined mixing and dissolution method to prepare this otherwise unusable waste for geopolymerization, with up to 33% inclusion in the final product. This mixing and dissolution step enables sufficiently high solids content to form a castable geopolymer paste, which forms a rigid matrix and a compressive strength of 12.8 MPa, sufficient for structural applications. This is the first time mineral wool waste has been used as a geopolymer precursor. FESEM and XRD analysis of the formed products were performed to verify geopolymer formation. By using the preparation reported here, otherwise unrecyclable mineral wool waste can potentially be turned into a valuable raw material for geopolymer materials.

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Section: Introductionmentioning

confidence: 99%

Rockwool waste in fly ash geopolymer composites

Kinnunen

Yliniemi

Talling³

et al. 2016

J Mater Cycles Waste Manag

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“…The investigations performed previously showed that 20% of the MWW additive affected the ceramic body as a concentration-reducing additive, decreasing the overall shrinkage and water absorption while increasing the compressive strength of the ceramic body. Therefore, this material can be used instead of natural sand [7]. The chemical analysis of the SAAC revealed that the additive had a sufficiently large amount of alkali oxides (Na 2 …”

Section: Resultsmentioning

confidence: 99%

“…MWW is contaminated with hazard materials existing in phenol-formaldehyde binder -phenol and formaldehyde are considered hazardous waste, according to the requirements specified by the European Union [20]. Therefore, phenol and formaldehyde must be neutralised before using MWW waste [7]. The MWW waste was then sieved through a 2.0-mm sieve.…”

Section: Methodsmentioning

confidence: 99%

“…Modern ceramic products are expected to meet high-quality requirements, which can be ensured through the improvement of certain technological processes (i.e., preparation of raw materials, formation, drying, and burning) [1][2][3][4] and through the use of various conventional and nonconventional additives [5][6][7][8] that help to produce ceramic products that have good exploitable properties. When a plastic mass is prepared from clay and undergoes concentration reduction and is incorporated with additives (i.e., burning out, fluxing), the material is affected by the high processing temperatures applied, plastic mass agglomerates, and tight bonds are formed between atoms in the ceramic body during the creation of the glass phase and other new minerals.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the effect of syenite alkali aluminium concentrate (SAAC) on the properties of ceramic products containing the centrifugation waste of a mineral wool melt

Kizinievič

Balkevičius

Pranckevičienė

et al. 2015

Ceramics International

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“…The problems in recycling arise from the fibrous nature and low density of the material. Despite many attempts [7,8,9,10,11,12,13,14,15,16,17], the utilization of mineral wool waste in post-consumer production remains very low.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Mineral Wools as Alkali-Activated Material Precursor

et al. 2016

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Mineral wools are the most common insulation materials in buildings worldwide. However, mineral wool waste is often considered unrecyclable because of its fibrous nature and low density. In this paper, rock wool (RW) and glass wool (GW) were studied as alkali-activated material precursors without any additional co-binders. Both mineral wools were pulverized by a vibratory disc mill in order to remove the fibrous nature of the material. The pulverized mineral wools were then alkali-activated with a sodium aluminate solution. Compressive strengths of up to 30.0 MPa and 48.7 MPa were measured for RW and GW, respectively, with high flexural strengths measured for both (20.1 MPa for RW and 13.2 MPa for GW). The resulting alkali-activated matrix was a composite-type in which partly-dissolved fibers were dispersed. In addition to the amorphous material, sodium aluminate silicate hydroxide hydrate and magnesium aluminum hydroxide carbonate phases were identified in the alkali-activated RW samples. The only crystalline phase in the GW samples was sodium aluminum silicate. The results of this study show that mineral wool is a very promising raw material for alkali activation.

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Investigation of the usage of centrifuging waste of mineral wool melt (CMWW), contaminated with phenol and formaldehyde, in manufacturing of ceramic products

Cited by 23 publications

References 17 publications

Rockwool waste in fly ash geopolymer composites

Rockwool waste in fly ash geopolymer composites

Analysis of the effect of syenite alkali aluminium concentrate (SAAC) on the properties of ceramic products containing the centrifugation waste of a mineral wool melt

Utilization of Mineral Wools as Alkali-Activated Material Precursor

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