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·Valorization of metallurgical slag as a material for the treatment of polluted water resources has a threefold environmental impact and enhances the sustainability of both the metallurgical industry and water treatment processes Firstly the amount of waste slag to be disposed of is reduced; secondly expensive chemical reagents required for water treatment
DOI / ASCE Corpus ID 56213088; Evaluating the Properties of Mixtures of Steel Furnace Slag Coal Wash and Rubber Crumbs Used as Subballast article{Indraratna2018EvaluatingTP title={Evaluating the Properties of Mixtures of Steel Furnace Slag Coal Wash and Rubber Crumbs Used as Subballast} author={Buddhima
·The slag at BCL was rapidly cooled using water sprayed at high intensity giving it a glassy dark shiny look The outer layer of the slag had a tough appearance when handled The disposed slag usually contained iron copper zinc cobalt nickel silver and gold All these metals have different demands; for example iron has a high demand
·The effects of CaO Al2O3 and MgO additions singly or in combination on the copper solubility the Fe3VFe2 ratio in slag and on the minor element behavior of silica saturated iron silicate
·The study showed that the water slag ratio of 2 washing twice and stirring time of 30 min were the best washing conditions and the concentrations of Mn 2 and NH 3 N in the leachate of manganese slag were mg·L 1 and mg·L −1 respectively; % of Na 3 PO 4 % of quicklime % of cement and % of fly ash were
·Aluminum recycling generates large amounts of hazardous wastes known as salt slags consisting mainly of oxides metallic aluminum and salt fluxes Water leaching is a common technique used for salt removal being a decisive operation due to water usage and the need to achieve sufficient salt recovery In this study water leaching tests under varied
·We are committed to dust reduction in Copper slag grit and specialized in water washing of grit to remove the chloride content We also offer technical advice on the use of the right size of abrasives for the customer s purpose depending upon the required profile size of the blasted surface
Steel slag is a by product material from the combustion of steel in the electric arc furnaces The previous study mentioned the steel slag with 3% cement replacement improved the concrete properties In addition the disposal of wash water to the landfill had an impact on the environment So there
·This study addresses the issue of eliminating Congo red dye from aqueous solutions through green pyrolysis of hybrid iron oxides/graphene coated iron slag A novel adsorbent was developed utilizing cost effective date fruit derived graphite and iron slag byproducts The resulting macroporous structures resemble two dimensional graphene sheets
·The water to binder ratio varied between and In total 39 mixes of specimens were prepared in this study to examine the effects of foam content fly ash slag powder silica fume and water to binder ratios on the properties of foamed concrete specimens The detailed mix proportions for the 39 specimens are tabulated in Table 3
1 ·Organophosphates are a type of emerging environmental contaminant which can be removed effectively by adsorption Here modified steel slag was examined for its adsorptive performance in the removal of hydroxyethylidene diphosphonic acid HEDP from water Compared to acid % maximum removal rate and base % modification high
·This divergence between measured water uptake and chloride permeability in alkali activated specimens is attributed largely due to the specified standard preconditioning drying of the samples prior to water absorption testing due to the difference in water environments as a function of slag/fly ash ratio
·Filter press water washing and carbide slag CS were utilized for recycling manganese ensuring depth harmless and dispersion of electrolytic manganese residue EMR Mn recover profit pH value leaching concentration and particle sizes of treated water washed EMR TWEMR as well as the microstructure and composition changes during disposal
·The slag from the blast furnaces having been granulated a representative sample is taken to the sample mill 20 minutes allow to settle filter and wash well with H2S water Open the filter paper and by means of a jet of hot water wash the precipitate into a 300 cc beaker; dissolve any precipitate adhering to the filter paper with a
·In the late 1960s slag from NL Industries in Perth Amboy — slag that mostly came in the form of blast furnace pot bottoms from a secondary lead smelter — was used to build a sea wall
·The generated wastewater can be treated by chemical softening precipitation anoxic/oxic A/O and activated carbon adsorption Pulverized coal gasification wastewater is mainly generated from gas washing water and quench slag water which belongs to high temperature gasification wastewater
·The treatment of slag by water washing method has a great influence on the performance of slag which is mainly reflected in the following aspects 1 The chemical composition of slag changes The water soluble salts in the slag such as chlorine iron copper etc can be separated after water washing treatment thereby changing the chemical
·AAM includes precursors slag fly ash and metakaolin etc and alkali activators NaOH KOH Water glass etc The carbon emissions of alkali activator are still high Wastewater was mainly generated during the dewatering process and used as input water for sand washing and sieving In addition since the chemicals required
PDF On Jan 1 2016 Xiaoyu Chen and others published Organic Rankine cycle power plant by low temperature slag washing water of blast furnace Find read and cite all the research you need on
·Effect of water vapor on slag viscosity depended on the slag composition • The dividing line for the influence of water vapor on slag viscosity was A/B = • The modified Urbain model was used to predict viscosity of homogeneous slags • The viscosity of heterogeneous slags was predicted by modified Roscoe model •
·The extracted heavy metal concentrations during the washing process are highly dependent on the pH The pH curves of water washing and HCl washing are presented in Fig initial and final pH values for each curve have been noted with corresponding colors pH had almost no change and remained at around during water washing of GFA with two
·The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed In order to satisfy these factors a new technology for hydro vacuum granulation of slag melts HVG has been developed It is shown that the main advantage of the proposed HVG process is the
·In this paper the fly ash cyclic gradient washing dechlorination process is systematically studied through experiments and the effects of process parameters such as liquid solid ratio the number of leaching and process pulping on the dechlorination effect of fly ash are investigated and analyzed with the currently operating three stage counter current
·Li et al investigated the HM immobilization efficiency of alkali activated slag AAS cement for the stabilization of MSWI fly ash They reported that the AAS was an effective stabilization agent and could achieve an immobilization rate of 70% providing that the fly ash was pretreated with water Water washing and using an assisting agent
