Bioleaching from Coal Wastes and Tailings: A Sustainable Biomining Alternative

2021 ◽  
pp. 203-224
Author(s):  
Alexsandra Valério ◽  
Danielle Maass ◽  
Cristiano José de Andrade ◽  
Débora de Oliveira ◽  
Dachamir Hotza
Keyword(s):  
Coal Wastes

Modeling of the Transition Layer in Ceramic Matrix Composites from Coal Wastes and Clay

2020 ◽  
Vol 299 ◽  
pp. 37-42
Author(s):  
O.A. Fomina ◽  
Andrey Yu. Stolboushkin
Keyword(s):  
Transition Layer ◽  
Raw Materials ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Coal Waste ◽  
Matrix Composites ◽  
Carbonaceous Particles ◽  
The Core ◽  
Coal Wastes

A model of the transition layer between the shell and the core of a ceramic matrix composite from coal waste and clay has been developed. The chemical, granulometric and mineral compositions of the beneficiation of carbonaceous mudstones and clay were studied. The technological and ceramic properties of raw materials for the samples manufacturing were determined. The method of manufacturing multilayer ceramic samples from coal waste, clay and their mixture is given. The number of transition layers in the contact zone between the clay shell and the core from coal wastes is determined. The deformation and swelling phenomena of model samples from coal wastes, clay, and their mixtures were revealed at the firing temperature of more than 1000 °C. The formation of a reducing ambient in the center of the sample with insufficient air flow is shown. The influence of the carbonaceous particles amount and the ferrous form iron oxide in the coal wastes on the processes of expansion of multilayer samples during firing has been established.

scholarly journals Stabilization of coal wastes by crystallization

1980 ◽  
Author(s):  
R.J. Lauf ◽  
J.I. Federer ◽  
V.J. Tennery
Keyword(s):  
Coal Wastes

Method of treating viscose plant wastewaters with coal wastes

2006 ◽  
Vol 38 (1) ◽  
pp. 37-40
Author(s):  
N. A. Mazur ◽  
O. P. Laletina
Keyword(s):  
Coal Wastes

scholarly journals Studies of the Possibility of Using Coal Mining Waste in Concrete for Mine Construction

2020 ◽  
Vol 174 ◽  
pp. 01012
Author(s):  
Natalya Gilyazidinova ◽  
Vladimir Duvarov ◽  
Akparali Mamytov
Keyword(s):  
Coal Mining ◽  
Liquid Glass ◽  
Setting Time ◽  
Fine Fraction ◽  
Mining Waste ◽  
Coal Waste ◽  
Technological Parameters ◽  
Optimum Quantity ◽  
Coal Wastes

The article discusses the possibility of using coal waste for the preparation of mine concrete. As a result of the research, scientific and prac- tical results were obtained. It has been experimentally proved that when a small fraction of coal, which is a waste of coal mining, is added to mine concrete, the strength of concrete decreases, but with a certain ratio of this strength it is sufficient to ensure the required properties. A series of experi- ments was carried out with the addition of liquid glass to the concrete to control the setting time of the mixture. The properties of coal wastes were determined and the possibility of their use in mine concrete was investigated. It has been established that the introduction of a fine fraction of coal in the optimum quantity into the composition of mine concrete is possible without reducing technological parameters.

Investigation of benefit of using coal wastes in cement production

2011 ◽  
Vol 8 (2/3/4) ◽  
pp. 268
Author(s):  
A. Sarrafi ◽  
M.R. Izadpanah ◽  
A. Ebrahimi ◽  
A.I. Mansouri
Keyword(s):  
Cement Production ◽  
Coal Wastes

Aerobic and anaerobic microbial dissolution of toxic metals from coal wastes: mechanism of action

1989 ◽  
Vol 23 (4) ◽  
pp. 435-441 ◽  
Author(s):  
Arokiasamy J. Francis ◽  
Cleveland J. Dodge ◽  
Arthur W. Rose ◽  
Armando J. Ramirez
Keyword(s):  
Mechanism Of Action ◽  
Toxic Metals ◽  
Coal Wastes ◽  
Aerobic And Anaerobic
Sign in / Sign up

Export Citation Format

Share Document