Published in 2020

Destoning the Moatize Coal Seam, Mozambique, by Dry Jigging

air jig destoning waste separation Moatize coal

Authors: Carlos Hoffmann Sampaio, Weslei Monteiro Ambrós, Bogdan Cazacliu, Josep Oliva Moncunill, David Selemane José, Gerson Luis Miltzarek, Irineu Antônio Schadach de Brum, Carlos Otávio Petter, Eunírio Zanetti Fernandes and Luis Felipe Silva Oliveira

Journal: Minerals

Description:

This paper proposes pre-beneficiation studies by air jigs of the coal layers from a Moatize coal deposit. Pre-beneficiation, also called destoning, removes tailings before the beneficiation plant. The air jigs operate in the same granulometric size range as the heavy-media cyclones (HMCs) that are installed in the preparation plant. With the destoning, the heavy-media circuit operates with a lower coal feed and higher organic matter contents, increasing its cutting efficiency and lowering operational costs. The use of air jigs reduces the total water consumption in the plant, which is especially important for the region where the plant is installed, as water is particularly scarce. Four coal layers of the Moatize coal deposit were studied, which are currently exploited in the mine. As the main results of the study, it is possible to say that the concentration of lights (feed of the preparation plant) and heavies (waste fraction) in air jigs can be carried out with reasonable efficiencies for all coal layers studied, making air jigs a feasible option for coal destoning.

Published in 2020

Optimization and dust emissions analysis of the air jigging technology applied to the recycling of construction and demolition waste

Authors: Regis P. Waskow, Viviane L.G. dos Santos, Weslei M. Ambrós, Carlos Hoffmann Sampaio, Ana Passuello, Rejane M.C. Tubino

Journal: Journal of Environmental Management

Published in 2020

Demolished concretes recycling by the use of pneumatic jigs

Authors: Carlos Hoffmann Sampaio, Bogdan G Cazacliu, Weslei Monteiro Ambrós, Márcio André Kronbauer, Rejane MC Tubino, Denise CC Dal Molin, Josep Oliva, Gérson L Miltzarek, Regis P Waskow, Viviane LG dos Santos

Journal: Waste Management & Research

Published in 2020

Fabrication, microstructure, and properties of fired clay bricks using construction and demolition waste sludge as the main additive

Authors: Glaydson Simões dos Reis, Bogdan Grigore Cazacliu, Alexis Cothenet, Philippe Poullain, Michaela Wilhelm, Carlos Hoffmann Sampaio, Eder Claudio Lima, Weslei Ambros, Jean-Michel Torrenti

Journal: Journal of Cleaner Production

Published in 2019

Some observations on the influence of particle size and size distribution on stratification in pneumatic jigs

Authors: Weslei M. Ambrós, Carlos H. Sampaio, Bogdan G. Cazacliu, Paulo N. Conceição, Glaydson S. dos Reis

Journal: Powder Technology

Published in 2018

Heterogeneity of recycled concrete aggregates, an intrinsic variability

Authors: Eliane Khoury, Weslei Ambrós, Bogdan Cazacliu, Carlos Hoffmann Sampaio, Sébastien Remond

Journal: Construction and Building Materials

Published in 2017

Usage of air jigging for multi-component separation of construction and demolition waste

Authors: Weslei Monteiro Ambrós, Carlos Hoffmann Sampaio, Bogdan Grigore Cazacliu, Gerson Luis Miltzarek, Leonardo R. Miranda

Journal: Waste Management

Published in 2016

Stratification in air jigs of concrete/brick/gypsum particles

Authors: Carlos Hoffmann Sampaio, Bogdan Grigore Cazacliu, Gérson Luis Miltzarek, Florian Huchet, Laurédan le Guen, Carlos Otávio Petter, Régis Paranhos, Weslei Monteiro Ambrós, Marcos Leandro Silva Oliveira

Journal: Construction and Building Materials

Published in 2016

Wall effects on particle separation in air jigs

Authors: Weslei Monteiro Ambrós, Bogdan Grigore Cazacliu, Carlos Hoffmann Sampaio

Journal: Powder Technology

Published in 2015

Experimental analysis and modeling of internal combustion engine operating with wet ethanol

Authors: W.M. Ambrós, T.D.M. Lanzanova, J.L.S. Fagundez, R.L. Sari, D.K. Pinheiro, M.E.S. Martins, N.P.G. Salau

Journal: Fuel