Investigation of the effect of some parameters on the degree of leaching antimony from stibnite [PDF]
Acta Montanistica Slovaca, 1998 The paper presents results of experiments of agitation leaching of antimony from stibnite in alkaline solutions of Na2S +NaOH. The influence of different solution solutions ratio of the reacting phases and of different rate of stirring on the degree of ...
Remeteiová Dagmar +1 more
doaj +2 more sources
Direct Pressure Alkaline Leaching of Scheelite Ores and Concentrates [PDF]
Mining, Metallurgy & Exploration, 2019 The average global recovery rates for processing scheelite ores by physical methods are normally in the range 50 to 70%, and it is problematic to attain a minimum grade of 60% WO3 in the concentrates without penalizing further this yield. Direct hydrometallurgical processing of low-grade concentrates or medium- to high-grade ores may become an ...
Patrícia Leitão +5 more
openaire +2 more sources
Leaching Titaniferous Magnetite Concentrate by Alkaline Aqueous Solution [PDF]
Mining, Metallurgy & Exploration, 2021 AbstractLeaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe.
Ke Guo +3 more
openaire +1 more source
Kuangchan zonghe liyong, 2023 This is an essay in the field of metallurgical engineering. Content of alumina in pyrite tailings in the southwest China is higher than 46%, and the alumina is of high recycling value.
Xueru Feng, Shuping Liu, Chao Li
doaj +1 more source
Experimental Study on the Dressing and Smelting of a Pyrrhotite-bearing Primary Gold Ore [PDF]
E3S Web of Conferences, 2023 The content of pyrrhotite in a primary gold mine containing pyrrhotite is 0.68%. In the process of alkaline leaching pretreatment, there are problems such as large ore quantity and high alkali consumption.
Chen Yanbo, Wang Junjie
doaj +1 more source
Residual capability of alkali binding by hydrated pozzolanic cements in long-service concrete structures [PDF]
, 2018 An experimental procedure was developed and applied to cement pastes made with two different pozzolanic cements (CEM IV/B (P) and CEM IV/B (V)) in order to ascertain the existence of a residual capability of alkali binding by long-term hydrated ...
Antonio Evangelista Paolini, And +2 more
core +2 more sources
Recycling Of Auriferous Ore Flotation Tailings In Slag-alkaline Cement [PDF]
, 2016 Research analysis aimed at stabilizing processes in industrial waste and other, similar hazardous ion containing materials, shows that these materials can be successfully stabilized, if they are bound as a mineral component in cement.
Gots, V. (Volodimir) +3 more
core +2 more sources
Long-term evolution of highly alkaline steel slag drainage waters [PDF]
, 2015 © 2015, Springer International Publishing Switzerland. The disposal of slag generated by the steel industry can have negative consequences upon the surrounding aquatic environment by the generation of high pH waters, leaching of potentially problematic ...
Mayes, William M., Riley, Alex L.
core +2 more sources
Porous glass-ceramics from alkali activation and sinter-crystallization of mixtures of waste glass and residues from plasma processing of municipal solid waste [PDF]
, 2018 Alkali-activated aqueous slurries of fine glass powders, mostly deriving from the plasma processing of municipal solid waste ('Plasmastone'), were found to undergo progressive hardening at low temperature (75 degrees C) owing to the formation of C-S-H ...
Bernardo, Enrico +3 more
core +3 more sources
Spectroelectrochemistry of enargite III: Alkaline sulfide leaching [PDF]
Mining, Metallurgy & Exploration, 2015 The reactivity of an enargite mineral electrode was investigated spectroelectrochemically under conditions typically found in alkaline sulfide leach solutions, with pH 11–13 and Na2S additions of 50 and 250 gL−1. A bulk enargite electrode was cycled between 0 and −1,000 mV for each set of solution conditions.
Gow, R. +3 more
openaire +2 more sources