Recycling of the product of thermal inertization of cement-asbestos for various industrial applications

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2010.07.006· OSTI ID:21541763

Giacobbe, Carlotta; Sardisco, Lorenza; Saraceno, Michele ^[1]; Lassinantti Gualtieri, Magdalena ^[2]; Lusvardi, Gigliola ^[3]; Cavenati, Cinzia; Zanatto, Ivano ^[4]

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1. Dipartimento di Scienze della Terra, Universita di Modena e R.E., Via S. Eufemia 19, I-41100 Modena (Italy)
2. Dipartimento Ingegneria dei Materiali e dell'Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905/a, I-41100 Modena (Italy)
3. Dipartimento di Chimica, Universita degli Studi di Modena e Reggio Emilia, Via G. Campi 183, I-41100 Modena (Italy)
4. ZETADI S.r.l., Via dell'Artigianato 10, Ferno (Italy)

Recycling of secondary raw materials is a priority of waste handling in the countries of the European community. A potentially important secondary raw material is the product of the thermal transformation of cement-asbestos, produced by prolonged annealing at 1200-1300 {sup o}C. The product is chemically comparable to a Mg-rich clinker. Previous work has assured the reliability of the transformation process. The current challenge is to find potential applications as secondary raw material. Recycling of thermally treated asbestos-containing material (named KRY.AS) in traditional ceramics has already been studied with successful results. The results presented here are the outcome of a long termed project started in 2005 and devoted to the recycling of this secondary raw materials in various industrial applications. KRY.AS can be added in medium-high percentages (10-40 wt%) to commercial mixtures for the production of clay bricks, rock-wool glasses for insulation as well as Ca-based frits and glass-ceramics for the production of ceramic tiles. The secondary raw material was also used for the synthesis of two ceramic pigments; a green uvarovite-based pigment [Ca{sub 3}Cr{sub 2}(SiO{sub 4}){sub 3}] and a pink malayaite-based pigment [Ca(Sn,Cr)SiO{sub 5}]. The latter is especially interesting as a substitute for cadmium-based pigments. This work also shows that KRY.AS can replace standard fillers in polypropylene plastics without altering the properties of the final product. For each application, a description and relevant results are presented and discussed.

• OSTI ID: 21541763
• Journal Information: Waste Management, Vol. 31, Issue 1; Other Information: DOI: 10.1016/j.wasman.2010.07.006; PII: S0956-053X(10)00347-8; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
ANNEALING
ASBESTOS
BRICKS
CADMIUM
CALCIUM COMPOUNDS
CEMENTS
CERAMICS
CHROMIUM SILICATES
CLAYS
EUROPEAN UNION
FILLERS
GLASS
PIGMENTS
POLYPROPYLENE
RAW MATERIALS
RECYCLING
RELIABILITY
ROCKS
WASTE PROCESSING
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CHROMIUM COMPOUNDS
ELEMENTS
HEAT TREATMENTS
INTERNATIONAL ORGANIZATIONS
MANAGEMENT
MATERIALS
METALS
MINERALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYOLEFINS
PROCESSING
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT