Results 21 to 30 of about 17,002 (248)

Offsetting of CO₂ emissions by air capture in mine tailings at the Mount Keith Nickel Mine, Western Australia: Rates, controls and prospects for carbon neutral mining [PDF]

open access: yes, 2014
The hydrated Mg-carbonate mineral, hydromagnesite [Mg₅(CO₃)₄(OH)₂•4H₂O], precipitates within mine tailings at the Mount Keith Nickel Mine, Western Australia as a direct result of mining operations.
Barker, Shaun L.L.   +8 more
core   +2 more sources

Experimental Observation of a Calcium Silicon Double Carbonate

open access: yesAngewandte Chemie, EarlyView.
High‐pressure and ‐temperature reactions between Ca5(Si2O7)(CO3)2 tilleyite and CO2 carbon dioxide yield the first experimental evidence of the double carbonate Ca2Si(CO3)4 and a new Ca2(C4O10) phase containing tetrahedral [CO4] units. These findings reveal unexpected carbonate chemistry and highlight pathways for carbon incorporation under mantle ...
Benedito Donizeti Botan‐Neto   +6 more
wiley   +2 more sources

Sequestering CO2 by Mineralization into Useful Nesquehonite-Based Products [PDF]

open access: yes, 2016
The work described here was supported financially by GORD, the Gulf Organisation for Research and Development, based in Doha, Qatar.
Galvez-Martos, Jose-Luis   +5 more
core   +2 more sources

Study on regulators of purifying magnesite ore by cationic reverse flotation

open access: yesScientific Reports, 2021
The floatability of magnesite, dolomite and quartz is a major factor affecting the removal of silicon and calcium from magnesite ore. The effect of the regulators sodium hexametaphosphate (SH), sodium silicate (SS), trisodium phosphate (TP), tannic acid (
Pengcheng Li   +3 more
doaj   +1 more source

Effect of depressants on flotation separation of magnesite from dolomite and calcite

open access: yesInternational Journal of Mining Science and Technology, 2023
The flotation separation of magnesite from calcium-containing minerals has always been a difficult subject in minerals processing. This work studied the inhibition effects of carboxymethyl cellulose (CMC), sodium lignosulphonate, polyaspartic acid (PASP)
Wenqing Qin   +6 more
doaj   +1 more source

The role of limestone and dolomite tailings’ particle size in retention of heavy metals from liquid waste [PDF]

open access: yes, 2008
Purpose. The study aims at investigating the role of particle size of mineral tailings derived from limestone, limestone marble, dolomite and dolomitic marble in heavy metal adsorption, in both batch and fixed bed conditions, so as to estimate whether ...
Albadarin   +26 more
core   +1 more source

Synthesis of cubic diamond in the graphite-magnesium carbonate and graphite-K2Mg(CO3)(2) systems at high pressure of 9-10 GPa region [PDF]

open access: yes, 2008
Cubic diamond was synthesized with two systems, (1) graphite with pure magnesium carbonate (magnesite) and (2) graphite with mixed potassium and magnesium carbonate at pressures and temperatures above 9.5 GPa, 1600 degrees C and 9 GPa, 1650 degrees C ...
Dobson, D   +4 more
core   +1 more source

Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First‐Principles Calculations

open access: yesGeochemistry, Geophysics, Geosystems, 2018
Magnesite (MgCO3) is a likely main host of carbonates in the mantle and plays an important role in the transport and storage of carbon in the Earth's mantle. Its physical properties at high pressure and high temperature (PT) are crucial for understanding
Chao Yao   +3 more
doaj   +1 more source

Effect of n-octanol on impurity removal by reverse flotation of magnesite ore

open access: yesScientific Reports, 2022
Dodecylamine is one of the most commonly used amine collectors for the reverse flotation of magnesite ore. Through a combination of experimental research and computational simulation, the effect of n-octanol on the removal of impurities by the reverse ...
Pengcheng Li   +4 more
doaj   +1 more source

Biologically induced phosphorus precipitation in aerobic granular sludge process [PDF]

open access: yes, 2011
Aerobic granular sludge is a promising process for nutrient removal in wastewater treatment. In this work, for the first time, biologically induced precipitation of phosphorus as hydroxyl-apatite (Ca5(PO4)3(OH)) in the core of granules is demonstrated by
Biscans, Béatrice   +2 more
core   +3 more sources

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