Results 171 to 180 of about 31,841 (211)

Study on Frost-Salt Resistance of Fly Ash Concrete

Advanced Materials Research, 2012
Accelerated frost-salt tests of fly ash concrete were carried out, through which the influence of water-binder ratio, volume of fly ash, air-entraining content on the frost-salt resistance of concrete were discussed, and the variation of surface characteristics, weight loss rate, relative dynamic modulus of concrete elasticity with the number of freeze-
Cong Tao Sun, Wei Hua Li, Bao Rong Hou
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Immobilization of by-product sulfate salt slag from high-salt organic wastewater with fly ash in lightweight aggregate ceramsite

Environmental Technology, 2021
The lightweight aggregate ceramsite (LAC) was prepared from by-product sulfate salt slag (BPSS) of high-salt organic wastewater with fly ash. The BPSS fixation rate, leaching toxicity, morphological structures and potential environmental risks of heavy metals in LAC were investigated.
Qian, He, Huixia, Chen, Haiyan, Tang, Jiyuan, Sun, Hongbin, Xu, You, Zhang   +5 more
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Carbochlorination of Fly Ash in a Fused Salt Slurry Reactor

MRS Proceedings, 1986
ABSTRACTCarbochlorination of the metal oxides in fly ash by suspending the solid reactants in a NaCl-AlCl3 melt at 530–850°C and then sparging chlorine into the melt has been investigated. A mechanically agitated, semi-batch reactor was used to test the effects of temperature, oxide and carbon loading, salt composition and gas flow on the reaction rate.
M. S. Dobbins, G. Burnet
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Alkali Salt Ash Formation in Four Finnish Industrial Recovery Boilers

Energy & Fuels, 1999
Combustion aerosol measurement methods were introduced and applied for extensive ash formation studies at four operating recovery boilers in Finland. Ash particle mass size distributions determined with a Berner-type low-pressure impactor downstream the heat exchangers were clearly bimodal with the fine mode at about 2 µm and the coarse mode above 3 µm
Kauppinen, Esko I., Pyykönen, Jouni, Jokiniemi, Jorma, Aurela, Minna, Vakkilainen, Esa, Janka, Kauko, Mikkanen, Pirita   +7 more
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Tree ash as an Ayoreo salt source in the Paraguayan Chaco

Economic Botany, 1994
The 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, 2019
This 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, 2013
The 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, M. A. Sinyakova, L. A. Karmanova   +2 more
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Effect of Different Vanadate Salt Composition on Oil Ash Corrosion of Boilers

Oxidation of Metals, 2017
Corrosion 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, 2014
Ash 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, S. N. Klyukin, A. V. Shilyakov   +2 more
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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.
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