Sustainable assessment and synergism of ceramic powder …
This study focuses on Iron ore tailings (IOTs), a solid waste generated during iron ore processing, which can be used as supplementary cementitious materials (SCMs) but have low reactivity, hindering their large-scale application in concrete production.
Concrete Without Gravel
Concrete isn't considered concrete without aggregates like gravel and stone. It's the aggregates that contribute to concrete having high strength. If you just mix sand and cement (with water), you'll get something closer to mortar or masonry cement, but it'll be very low in strength and not be good to use for any type of structural application.
New step in mineral processing could help prevent a sand …
15 November 2021. A step-change in mineral processing could help the world avoid a sand sustainability crisis. Researchers from The University of Queensland's Sustainable Minerals Institute's (SMI) and the University of Geneva (UNIGE) are investigating whether ore-sand (o-sand), an alternative construction material produced from mineral ...
Ore-sand: A circular economy solution to reduce mineral …
Finding alternative sources of sand. Our work has demonstrated that by-products of metal mining can be used as a viable and sustainable ore-sand for construction (aggregate) or other industries (silica sand), displacing the need for sand extracted from the natural environment.
Near-zero-waste processing of low-grade, complex primary ores …
In order to treat diverse and complex low-grade ores efficiently, the use of a new metallurgical systems toolbox is proposed, which is populated with existing and innovative unit operations: (i) mineral processing, (ii) metal extraction, (iii) …
A Sustainable Approach to Transforming Mining Waste …
Construction materials: The use of mining waste materials as concrete aggregates for construction, production of brick and tiles, cement, pozzolana and pigments for paints. Modular bricks can be prepared using iron ore waste with fly ash and cement as aggregates.
Crushing Plant Design and Layout Considerations
There are three main steps in designing a good crushing plant: process design, equipment selection, and layout. The first two are dictated by production requirements and design parameters, but the layout can reflect the input, preferences and operational experience of a number of parties.
Unlocking Potential: Rare Earth Elements Processing Solutions
After mineral processing tests, FTM engineers formulated a mineral processing plan of crushing-grinding-flotation separation, which finally enabled users to obtain a rare earth concentrate grade of 23.46% and a recovery rate of 88.52%.
Utilisation of iron ore tailings as aggregates in concrete
Sustainable handling of iron ore tailings is of prime concern to all stakehold-ers who are into iron ore mining. This study seeks to add value to the tailings by utilis-ing them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5.
Minerals | Special Issue : Advances in Ore Processing
The use of recycled aggregates (RA) to replace natural aggregates (NA) in new concrete production has been pointed out as one of the main strategies to close the loop of construction materials.