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Tree ash as an Ayoreo salt source in the Paraguayan Chaco
Economic Botany, 1994The Ayoreo, an Amerindian group of the Paraguayan Chaco, use ash from several plant species as sources of salt. The elemental composition of the ash ofMaytenus vitis-idaea, Lycium nodosum, Trithrinax schizophylla and another sample which serve as salt sources are reported and the use of vegetal salts by indigenous South American populations is ...
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Influences of coal fly ash containing ammonium salts on properties of cement paste
Journal of Environmental Management, 2019This paper aims to investigate the influence of coal fly ash containing ammonium salts on properties of cement paste. Fly ash was incorporated at percentage of 20% by weight of the total binder to replace Portland cement. Ammonium hydrogen sulfate (NH3HSO4) or ammonium sulfate ((NH3)2SO4) were introduced at percentages of 3.0%-6.0% or 1.5%-3.0% by fly ...
Ling Qin, Xiaojian Gao, Qiyan Li
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Equilibrium and kinetics of interaction of Karaganda coal ash with solutions of metal salts
Russian Journal of General Chemistry, 2013The interaction of solutions of a number of metals with the Karaganda coal ash, resulting in the redistribution of metal ions between the ash and the metal solution, was studied. The character and quantitative characteristics of the process depend on the properties of the metal and its concentration in solution.
M. K. Prudnikov +2 more
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Effect of Different Vanadate Salt Composition on Oil Ash Corrosion of Boilers
Oxidation of Metals, 2017Corrosion in oil-fired boilers is accelerated in the presence of V, Cl and S which derive from low-grade fuels or the environment. 10CrMo9-10 steel is commonly used in such boilers. In order to evaluate the salts corrosion behavior of such low Cr steels, samples were immersed in several vanadate salt combinations of Cl, S, Na and Ca in air at 600 °C ...
X. Montero, M. C. Galetz
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Reducing the ash content in coke by reducing the salt content in the quenching tower
Coke and Chemistry, 2014Ash is introduced in coke by the coal concentrates in the batch and also by the production process. In wet quenching, ash is added to the coke from the quenching water, as it evaporates. The salt content of the water is important here: with higher salt content of the water, more salts are deposited on the coke. Because the quenching water circulates in
G. G. Fedotov +2 more
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Frost salt scaling resistance of concrete containing CFBC fly ash
Materials and Structures, 2008The possibility for using coal combustion by-products in concrete exposed to frost-salt aggression was investigated. The research was aimed to assess an influence addition of circulating fluidized bed combustion (CFBC) fly ash on frost-salt scaling of air-entrained concrete.
Michal A. Glinicki, Marek Zielinski
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Volcanic ashes compared with paleozoic salts containing extraterrestrial spherules
Journal of Geophysical Research, 1964Seven volcanic ash deposits are compared with three sedimentary salt samples. In altered volcanic ash montmorillonite is the dominant mineral; euhedral and skeletal crystals of ilmenite are found in the magnetic fraction; spherules are relatively rare.
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Recovery of Potassium salts from bioindustry ashes
Sustainable fertilizer production is crucial for society, and ensuring food security remains a global challenge. Virgin mining still dominates the production of potassium fertilizers and is associated with economic, geopolitical and environmental constraints.openaire +1 more source