MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
slag activator
Activator Anion Influences the Nanostructure of Alkali
2021年9月9日 Alkaliactivated slag cement is produced by blending ground granulated blast furnace slag with an alkali activator The predominant reaction product in these cements is a sodiumsubstituted calcium aluminosilicate 2014年2月1日 Alkali activated slag (AAS) mortars were produced by activation of GGBFS with technical grade sodium hydroxide and water glass (liquid sodium silicate) Sodium silicate Effect of activator type and content on properties of alkali When using low concentrations of sodium metasilicate as an activator, the MgO content in the slag influences the kinetics of the reaction, while the CaO content plays a more significant role when the concentration of metasilicate is increasedSlag and Activator Chemistry Control the Reaction Activator chemistry can have a defining effect on the shrinkage of AAS Neto et al studied the effects of several activators on the drying and autogenous shrinkages of AAS such that the Activated Slag an overview ScienceDirect Topics
Interaction Mechanism between Slags and Alkali Silicate
2023年11月3日 In this study, we examined the earlystage interaction of three types of slag and six activators with different chemical compositions To determine the degree of hydration 2019年11月1日 In this work, the degradation mechanisms of alkaliactivated slag (AAS), prepared with various activator compositions, exposed to 5% Na 2 SO 4 and MgSO 4 Mechanism of sulfate attack on alkaliactivated slag: The role of 2024年6月12日 Ground Granulated Blast Furnace Slag (GGBFS) as a binder offers superior properties such as high early strength, and temperature resistance when activated using an Effect of binder and activator composition on the Nature2021年5月25日 This paper summarized and reviewed the mechanism and macroperformance of alkaliactivated metallurgical slag, including steel slag, copper slag, ferronickel slag, and leadzinc slag Better activated method and Advances in Understanding the Alkali‐Activated
Investigation of the Effects of MagnesiumSulfate as Slag Activator
This study is about the mechanical and microstructural properties of alkaliactivated slag (AAS) paste using magnesium sulfate (MS) as an activator MS is 2%, 4%, 6%, 8% and 10% 2024年11月1日 Physicochemical properties of ground granulated blast furnace slag (GGBFS) will affect the hydration and properties of AlkaliActivated Slag Cement (AASC) In the study, Effect of PhysicoChemical Properties of Slag on the Hydration2021年1月25日 Present study targets to achieve maximum percentage of slag activity index by chemical activation The slag activity index M2 (sodium silicate activated cement and slag blend) was increased to 6594% and 7219% after 7 days and 28 days of curing respectively This shows that chemical activators will help in achieving the high SAIDevelopment of newer composite cement through mechanochemical 2021年7月27日 Both amines act as activators for the hydration of the slag blended cement Figure 2 : (a) Heat flow evolution of a cement blended with 40 wt% slag in presence of Amine 1 and Amine 2 [1] Finally, an increase of ACTIVATION OF SLAG BLENDED CEMENTS BY
A critical review on application of alkali activated slag as a
2019年12月1日 The activation of slag with sodium silicate is well known to results in fast setting of the AAS As such, this rapid setting has been attributed to the formation of initial calcium silicate hydrate [88]The effects of different activators on the setting time of AAS is presented in Fig 1As can be seen, out of all the activators considered, the proportions (4, 6, and 8%) of 2022年12月17日 The recycling–utilization rate of steel slag in China is less than 30% Steel slag is rich in CaO and can produce the Ca(OH)2 after hydration, which are expected to activate the pozzolanic activity of blast furnace slag This work recycled steel slag as an alkali activator for the activation of blast furnace slag and prepared a steel slagblast furnace slagbased (SSBFS Recycling of steel slag as an alkali activator for blast furnace slag 2021年2月22日 The use of Ground Granulated Blast Furnace Slag (GGBFS) as binder for concrete had been reviewed extensively in previous reviews However, the influence of various types of alkali activators on the behavior of GGBFS based concrete had yet to be consolidated in a comprehensive reviewRecent advances in slagbased binder and chemical activators derived 2024年3月12日 Wang et al used highiron steel slag as an alkaliactivator to study the effect on the coagulation and hardening of perovskite phosphogypsum slag cementitious materials, and the results showed that, compared to CaO, highiron steel slag is not favorable to early slurry strength development, but it has a positive effect on later strength Effect of carbide slag and steel slag as alkali activators on the key
Relation between activator ratio, hydration products and
2021年1月10日 To take into account these activator’s variations, sodium hydroxide is used as activator, considering a large range of Na 2 O to slag mass ratios, from 125 to 15% of slag mass These activation rates were chosen because of the end application for earth building materials, which will result in cation exchange with clays2021年1月1日 The activation of carbonation is reflected in the following aspects: 1) the carbonation activity of MgO was higher than that of other components in RO phase, FeO and MnO are difficult to react with CO 2 under these experimental conditions; 2) MgCO 3 and CaCO 3 produced by carbonation can form a densely aggregated coating [31, 32], which makes the Carbon sequestration of steel slag and carbonation for activating 2014年2月1日 Activation process of slag varies with the chemical properties and phase compositions of slags, the type and concentration of activators Slags have a variable composition depending on the raw materials and the industrial process; hence, each slag response differently to the activation processEffect of activator type and content on properties of alkali 3 天之前 Alkaliactivated materials (AAMs) offer a promising alternative to OPC in paste backfilling due to their superior mechanical strength and durability [8]AAMs are produced by activating precursors, often industrial solid wastes (ISWs) with latent hydraulic or pozzolanic properties, using alkaline activators [9]Highactivity ISWs such as blast furnace slag (BFS) Alkali activation of blast furnace slag using Bayer red mud as an
The mineral phase evolution characteristics and hydration activity
2024年3月25日 During the slow cooling process of steel slag, crystals of the inert ore phase (C 2 F) and active ore phase (C 2 S, C 3 S) grow dependently, and the irregular interlacement and coating between ore phases strongly affect the hydration activity of the active ore phase in steel slag Therefore, in this article, a typical alkaline activator, NaOH, was selected, the solvent 2023年10月1日 Alkali activation may also provide a fundamental route for the immobilisation of heavy metalcontaining wastes originating from metallurgical processes [9, 10], including stainless steel productionStainless steel slags are generated in considerable volumes, up to about 300–400 kg of slags for each tonne of stainless steel produced [11, 12], and are classified Characterisation of alkaliactivated stainless steel slag and blast 2024年9月12日 The present investigation explores the potential of alkaliactivated slag as a novel method for stabilizing and enhancing the mechanical properties of loose sandy soils To achieve this, unconfined compression tests were performed on samples with varying slag content, activator solution parameters, and curing conditions A predictive model was developed to AlkaliActivated Slag for Enhancing Mechanical Properties in 2023年11月1日 The activator, disodium oxalate (C 2 Na 2 O 4), was an industrialgrade material (Acros Organics®, extra pure 985% CAS number 62760) 22 Samples preparation The materials used for the present study are pure BOF slag paste with Sodium oxalate activation of basic oxygen furnace slag for
(PDF) Slag and Activator Chemistry Control the Reaction
2018年12月11日 (A) Slag M06 activated with 3 wt% sodium silicate activator, and (B) corresponding molar ratios of the main components in the solid solutions CNASHss and MgAlOHLDHss (C) Slag M06 activated 2023年3月31日 To examine the effect of slag and activator content, the fly ash was replaced with GGBS for 25% and 50% For each replacement levels, the solid activator content varied from 8 to 16% at an interval of 2% All of the mixtures maintained the same water to geopolymer solids ratio (W/GS) of 030Effect of slag and solid activator on flowability and compressive 2019年11月25日 This study is about the mechanical and microstructural properties of alkaliactivated slag (AAS) paste using magnesium sulfate (MS) as an activator MS is 2%, 4%, 6%, 8% and 10% contents of binder weight and waterbinder ratio is 035 Compressive strength, Xray diffraction, mercuryintrusion porosimetry, and thermal analysis were performed for analysisInvestigation of the Effects of MagnesiumSulfate as Slag Activator 2018年5月12日 Activated persulfates are efficient reagents for oxidation of organic contaminants and water treatment Various compounds are currently used to activate persulfates, but there is a need for cheap and efficient activators Here, we report the first use of steel slag, an industrial solid waste, as a solid activator for peroxydisulfate activation We tested this system for Waste control by waste: efficient removal of bisphenol A with steel
Activation technology of steel slag for concrete exposed to
Therefore, this review explores the impact of steel slag activation techniques on concrete’s hydration and durability properties The conclusions are as follows: 1 The higher strength and abundant surface porosity of steel slag aggregates enhance their bond with cement paste, creating a certain level of internal curing effect2016年9月15日 Ladle slag, currently an underutilized crystalline metallurgical residue, was studied for use as a precursor for alkali activation An activating solution containing sodium silicate and potassium hydroxide was used in activating the slag with varying compositional ratios in order to optimize the compressive strength Ladle slag is commonly regarded as having limited Alkali Activation of Ladle Slag from SteelMaking ProcessThe watertoslag ratio was kept constant at a value of 035 (by weight) To prepare AAS specimens, the activator was introduced into the slag powder in a bowl of cement paste mixer, in which the mixture was mixed at both low and high speeds for around 15 min There are five silicate moduli and three different Na 2 O contents for activatorsEffect of Dosage of Alkaline Activator on the Properties of Alkali 2023年11月3日 In this study, we examined the earlystage interaction of three types of slag and six activators with different chemical compositions To determine the degree of hydration (DOH) and hydrate assemblage in alkali Interaction Mechanism between Slags and Alkali
CO2 activated steel slagbased materials: A review
2019年1月20日 Steel slag used as an alternative recycled raw material activated by CO 2 is being recently studied and considered as a solution for storing CO 2, reducing GHG emissions, as well as recycling and valorising steel industry wasteA challenge on the steel slagbased carbon dioxide cured/activated materials is related with the variety of its chemical composition which 2016年10月24日 Two blast furnace slags were activated by alkali hydroxide and alkali silicate solutions possessing different modulus (05, 1 and 2), as well as cations (sodium and potassium) Their properties, including the setting time, heat of hydration, compressive strength as well as porosity and morphology have been investigated on both fresh and hardened pastes The Alkali activated slag binder: effect of cations from silicate activators2024年5月1日 Since the alkali activation of slag occurred at a fast rate and simultaneously with other reaction process, therefore the reactions that are supposed to occur for Peak II might already occurred within peak I and during induction period therefore the total cumulative heat evolved for this peak was not emphasized in this studyElucidation on alkali activation of slag with various solidtoliquid 2011年11月10日 The mechanism of activator to fluorgypsum and the fluorine solidification were investigated by the performances of composite binding material Through the setting time testing of fluorgypsum with NaOH, Na2SO4 and NaF, the least activator dosage were all 1% And the cementitious material over 80% of fluorgypsum was processed to improve its quality with slag, The activation of fluorgypsum with slag activator and the
Activator Anion Influences the Nanostructure of AlkaliActivated Slag
2021年9月9日 Alkaliactivated materials are promising lowcarbon alternatives to Portland cement; however, there remains an absence of a fundamental understanding of the effect of different activator types on 2023年7月2日 The activator used in this study was water glass with modulus of 13 It was prepared by dissolving NaOH tables (supplied by Chengdu Kelong Chemical Reagent Factory, China) into the original water glass (produced by Chongqing Jingkou Chemical Plant, China) which contained 3034% SiO 2, 1199% Na 2 O and 5102% water The modulus of the Mechanical properties and durability of alkaliactivated steel slag Keywords— Alkali activation, blast furnace slag, compressive strength, flexural strength download Download free PDF View PDF chevronright Partidos legislativos y coaliciones políticas en América Latina (19252019 Anibal PerezLinan Política y Gobierno , 2023(PDF) AlkaliActivated Slag Mortars Containing Alternative Activator Request PDF On Jan 1, 2011, A Allahverdi and others published Chemical activation of phosphorous slag with a solid compound activator Find, read and cite all the research you need on ResearchGateChemical activation of phosphorous slag with a solid compound activator
Granulated blastfurnace slag activator, its manufacturing
The granulated blastfurnace slag activator includes, in percent by weight, the following raw materials: 62% to 95% of gypsum and 5% to 38% of high belite sulfoaluminate cement clinker Also provided is a method of manufacturing cement by mixing the granulated blastfurnace slag activator with granulated blastfurnace slag at a certain ratio2020年6月18日 In terms of refining steel slag (ladle or white slag), it is estimated that for each ton of steel, between 20 and 30 kg of slag is produced; that is, in 2016, more than 700,000 tons of white slag were generated It is also known Ladle Steel Slag in Activated Systems for 2011年7月5日 The 29 Si MAS NMR spectra showed that a crosslinked CASH gel formed as an outcome of slag activation In this CASH gel, Si was partially replaced by Al in bridge positions(PDF) AlkaliActivation of Slag Cements: Activation 2024年10月8日 To solve the problem of environmental pollution from stockpiling of solid waste and to achieve safe and efficient underground engineering, an environmentfriendly wastebased ternary geopolymer grout was developed using blast furnace slag, sunflower stalk ash, and black rice hull ash KOHactivated grouts were used as the controls The applicability of grouts with Workability and Environmental Evaluation of Using Sunflower Stalk
Hydration and mechanical properties of cementsteel slag system
2023年1月11日 This study aims to improve the mechanical properties of cementsteel slag mortar by the addition of alkaline activators (NaOH, Na 2 CO 3 /NaOH and water glass) to promote the optimal utilization of steel slag In this paper, the setting time, flexural and compressive strength, earlyage hydration kinetics and microstructure are investigated to 2022年4月26日 This study examines the influence of SiO 2 and Na 2 O mix proportions on the properties of alkaliactivated slag (AAS) pastes In order to solve the rapid setting problem associated with AAS, phosphoric or silicic acid is commonly added to the alkaline activatorDelayed setting time for alkaliactivated slag composites Sciendo2019年11月1日 In this work, the degradation mechanisms of alkaliactivated slag (AAS), prepared with various activator compositions, exposed to 5% Na 2 SO 4 and MgSO 4 solutions are studied The results show that upon Na 2 SO 4 attack, little ettringite formation and compositional alteration occur in AAS with little length expansion However, upon MgSO 4 Mechanism of sulfate attack on alkaliactivated slag: The role of 2021年7月12日 Different types and amounts of activators are required for different solid waste raw materials depending on their chemical compositions For example, water glass, NaOH, Na 2 CO 3, and their pairwise mixtures are widely used as the alkali activator for ground granulated blastfurnace slag (GGBS) and fly ash (FA) [5], [6]Several studies have shown that the main Development and characterization of a new multistrength level
AlkaliActivated Materials and Geopolymer: a Review of
2021年6月5日 According to the type of activator used (eg, whether liquid or solid), Further research by Torgal [26,27,28], Luukkonen [29, 30], and Provis and Bernal [18, 31] research groups have further divided the AAMs to two different activation techniques with one that tends to use liquid activator, referred to as “twopart alkaliactivated materials,” while the other uses 2019年8月15日 Alkaliactivated slag (AAS) can be manufactured by mixing ground blast furnace slag powder with either solid or aqueous alkaline activators [1, 2]Besides the reduction of manufacturing associated CO 2 emissions, properly designed AAS behaves good mechanical and better durability compared to that of Portland cement (PC) [[3], [4], [5]]It is known that alkaline Understanding the roles of activators towards setting and hardening