Product center

A common choice of global customers

  • On the Origin of the Decay of the Photocatalytic Activity

     · The influence of high-energy grinding on the photocatalytic activity of nanocrystalline titania (TiO2) powders was investigated. Either in gas or in liquid reactions the photocatalytic activity is observed to decrease with milling time. The structural and surface characterizations showed that the catalytic decrease is not correlated to the milling induced transformation of anatase TiO2 into

    Chat Online
  • Influence of dry and wet ball milling on dispersion

     · A planetary ball mill made by Haji Engineering Korea was used to grind samples in this study. The collision medium was monosized (3.00 mm) spherical zirconia (ZrO 2) balls (purchased from Haji Engineering Korea).Grinding was performed as follows MWCNTs and zirconia balls were mixed and placed into cylindrical stainless pot (40 mm in inner diameter and 45 mm in height) lined by ZrO 2 a

    Chat Online
  • CHEMISTRY MINERALOGY AND MORPHOLOGY OF STEEL

     · ball mill using steel balls to a fineness powder. III.ANALYTICS TECHNIQUES The color of the slags was visually evaluated. The Particle size distribution was obtained by Microtrac S3500 laser particle size analyzer. Specific gravity was measured by a hydrostatic weighing

    Chat Online
  • Mechanochemical activation of titanium slag for effective

     · Fig. 1A compares the activities of slag-derived catalysts at different temperatures. TS 0 had almost no activity. After TS 0 was activated by formic acid the obtained AS 0 removed 32.2 ± 2.0 of NO at 350 °C. In comparison mechanochemical treatment further increased the activity. For example TS 12.5 removed 68.2 ± 1.7 of NO at 350 °C. Among all ball-milling-derived slags TS 62.5 was

    Chat Online
  • A Review of Methods for Synthesis of Al Nanoparticles

    The objective of milling is to reduce the particle size and blending of particles in new phases. The different type of ball milling can be used for synthesis of nanomaterials in which balls impact upon the powder charge 12 . High-energy ball milling is a convenient way to produce nanosized powders. It is the most common method reported in the

    Chat Online
  • CHEMISTRY MINERALOGY AND MORPHOLOGY OF STEEL

     · ball mill using steel balls to a fineness powder. III.ANALYTICS TECHNIQUES The color of the slags was visually evaluated. The Particle size distribution was obtained by Microtrac S3500 laser particle size analyzer. Specific gravity was measured by a hydrostatic weighing in a non-reactive liquid. To measure the pH of BOF C and

    Chat Online
  • Mechanochemical activation of titanium slag for effective

     · After ball milling Ca distributed uniformly on a slag surface (Kuwahara et al. 2013). Wet ball-milling was put forward to further activate slag surface (Wang et al. 2019 Zhang et al. 2019a Zhang et al. 2019b). Zeta potential of a slag was increased from −10 to 20 mV after wet ball-milling

    Chat Online
  • Effect of different grinding aids on property of

     · The objective of this study was to assess the feasibility of utilization of grinding aids (GA) in the granulated blast furnace slag (GBFS) powder production. The GBFS powders were prepared with different GA and their grindabilities fluidities reactivities and hydration characteristics were investigated. The experimental results indicate that although the improvement scales are various all

    Chat Online
  • Yue YU Phd Zhejiang University Hangzhou ZJU

    Mar 2016. Yue Yu. Zhanming Li. Jinming Pan. Objective. The objective of this study was to investigate changes in pigment spectral transmission and element content of chicken eggshells with

    Chat Online
  • Study of the Ball Milling Device for Synthesizing

    This study is a kinematic model of a mechanical mill that works with a single ball in motion and which is operated by a crank and connecting rod system for producing nanocrystalline powders by the process of ball milling. The geometric and dynamic parameters play an important role on the variation of forces created upon impact of the ball with the inside wall of the vial which caused energy

    Chat Online
  • Influence of the characteristics of steel slag powder

    Influence of the characteristics of steel slag powder particle on compressive strength of reactive powder concrete August 2011 Jianzhu Cailiao Xuebao/Journal of Building Materials 14(4)

    Chat Online
  • Effects of Ground Granulated Blast Furnace Slag in

     · Slag cement is often referred to as "ground granulated blast-furnace slag" (GGBFS). As requested in 2001 by slag cement manufacturers and the Slag Cement Association the American Concrete Institute officially reviewed and changed the terminology from GGBFS to slag cement (ACI Committee 233 2004).

    Chat Online
  • Refinement process and mechanisms of tungsten powder

     · During ball milling two vials orbit the center of turnplate circularly and each vial spins on its own axis in opposite direction. Fig. 2 is photo of planetary ball mill (Fig. 2a) and a schematic diagram of a vial from top-view during ball milling process (Fig. 2b) which shows the movement situations of W powder and balls inside the vial. Under the effect of two centrifugal forces from

    Chat Online
  • The Mechanical Alloying Behavior of Fe2O3 into NiO in the

     · The NiO and Fe 2 O 3 powders were mixed by the high-energy ball-milling followed by a sintering of the mixture at 1340°C for 0.5 h. XRD SEM DSC and size measurements were preformed to study the microstructure evolution in the high-energy ball-milled mixture and the sintered ones as well. It showed that the high-energy ball-milling processes resulted in a severe lattice distortion in the

    Chat Online
  • The Analysis of the Physicochemical Properties of

    Ball milling resulted in the conversion of form III to I whereas micro milling yielded form II. As a result of cryogenic grinding form III of benzocaine was preserved. The identification of all polymorphic forms of benzocaine was confirmed via X-ray powder diffraction (PXRD) supported by FT-IR spectroscopy coupled with density functional

    Chat Online
  • Mechano-chemical activation of the (3LiBH4 TiF3) system

     · The influence of milling energy input QTR (kJ g−1) during ball milling and additives such as ultrafine filamentary Ni and graphene (reduced graphene oxide) on the occurrence of the solid-state mechano-chemical reaction and resulting microstructure were investigated for the (3LiBH4 TiF3) system. The new phases

    Chat Online
  • Modeling and experiment of slag corrosion on the

     · ModelIng and experIMent of Slag corroSIon on the lIghtweIght aluMIna refractory wIth StatIc MagnetIc fIeld facIng green Metallurgy a. huanga b p. lian a l. fu a h. gu a y.Zou a aThe State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan China

    Chat Online
  • Study on the Preparation of High Performance Concrete

    The cementitious material is composed of ground SS powder and basic cementitious materials (BCM). First the mixed grinding was made in steps on the raw materials such as the IOT (-0.074mm particle size) GBFS CC and FGDG in a ratio of 21 12 12 5 using the ball mill following the

    Chat Online
  • Influence and Mechanism Analysis of Particle Size

    To explore the effect of mechanical activation on the particle size distribution of the composite admixture a self-designed test jet mill is used. We have studied the effects of different specific surface areas of composite admixtures on the workability mechanical properties and durability of concrete and combined X-ray diffraction (XRD) with scanning electron microscopy (SEM) to analyze the

    Chat Online
  • Understanding the Influence of Surface Solvation and

     · We explore the effect of solvent concentration on the thermodynamic stability of two polymorphs of a 1 1 cocrystal of theophylline and benzamide subjected to ball-mill liquid assisted grinding (LAG) and we investigate how this can be related to surface solvent solvation phenomena. In this system most stable bulk polymorph form II converts to metastable bulk polymorph form I upon neat grinding

    Chat Online
  • Influences of Ultrafine Slag Slurry Prepared by Wet Ball

    Abstract

    Chat Online
  • (PDF) Factors influencing the properties of a steel slag

    a ball mill. The obtained cement influence of the amount of the clinker on the proper ties. Huo et al. 20 24 used phosphoric acid and formic acid to activate the activity of steel slag

    Chat Online
  • Yue YU Phd Zhejiang University Hangzhou ZJU

    Mar 2016. Yue Yu. Zhanming Li. Jinming Pan. Objective. The objective of this study was to investigate changes in pigment spectral transmission and element content of chicken eggshells with

    Chat Online
  • Ball Milling Improves Extractability and Affects Molecular

     · Psyllium (Plantago ovata Forsk) seed husk (PSH) is very rich in arabinoxylan (AX). However its high gelling capacity and the complex nature of the AX make it difficult to process. In this study ball milling was investigated as a tool for enhancing PSH AX water extractability and molecular mass (MM). A 48 h laboratory-scale ball mill treatment under standardized optimal conditions reduced the

    Chat Online
  • Preparation and characterization of p–n heterojunction

     · The ball milling time has a significant influence on the photocatalytic activity of the photocatalyst. The optimal ball milling time is 6 h. The photocatalytic activity of the pn heterojunction photocatalyst p -CuBi 2 O 4 / n -TiO 2 is much higher than that of TiO 2 and the mixture of p -CuBi 2 O 4n -TiO 2 without ball milling under

    Chat Online
  • Influence of ground granulated blast furnace slag on the

     · Alkali-activated materials are low-environmental-impact binders that can be obtained from the alkaline activation of industrial wastes. In this study converter steel slag as the major raw material and ground granulated blast furnace slag (GBFS) as the modified material were activated by water glass with a modulus of 1.5 and a Na2O dosage of 4 . The hydration process microstructure and

    Chat Online
  • The effect of size distribution of slag particles obtained

     · The slag particles obtained at different rotating speeds in the dry granulation were ground in a ball mill for 35 min. As shown in Fig. 2 there were many large particles at 800 rpm with diameters of 2.44–4.26 mm. After ball milling the median diameter D50 of the slag powder

    Chat Online
  • A Review of Methods for Synthesis of Al Nanoparticles

    The objective of milling is to reduce the particle size and blending of particles in new phases. The different type of ball milling can be used for synthesis of nanomaterials in which balls impact upon the powder charge 12 . High-energy ball milling is a convenient way to produce nanosized powders. It is

    Chat Online
  • Exploring Different Synthesis Parameters for the

     · The influence of only a few of the parameters have been studied extensively such as the transition metal content 21–27 pyrolysis temperature 24–32 and role of different nitrogen precursors. 31–33 In terms of the pyrolysis environment NH 3 is often used to additionally dope the catalyst with nitrogen thus increasing the oxygen

    Chat Online
  • Study on the particle morphology powder characteristics

     · Therefore the hydration activity is higher. Consequently when selecting the production equipment for slag powder in addition to the slag grinding efficiency the influence of different application qualities of vertical-roller-milled slag powder and ball-milled slag powder on the production costs also needs to be considered. 4. Conclusion. 1.

    Chat Online
  • BJOCInfluence of the milling parameters on the

     · We previously reported a successful scale-up monoazidation reaction of Ts-β-CD (the reaction scale was 6.5 g 5 mmol) in a ball-mill (Supporting Information File 1 Table S1 entries 1–4) nsidering that the preparation of Ts-β-CD is laborious its commercial availability is restricted by high costs and limited number of producers the systematic investigation on the influence of the

    Chat Online
  • Study on the Properties of High-Performance Ground Iron

     · Ground iron and steel slag with excellent performance was prepared using the uniform test design. The influence of the fineness and content of steel slag powder on the fluidity and strength of the powder mortar was studied the regression equations of fluidity and compression strength of different ages are derived and the contour map is drawn. Based on the optimized composition the bleeding

    Chat Online
  • The volatilization behaviour of typical fluorine

     · Take XRF-1800 by melt press in Pt-Rh crucible to detect the slag composition and prepare different slag samples with chemical reagents according to XRF results. The samples were ground by an agate ball mill at a speed of 200 r.p.m. for 0.5 h dried at 373

    Chat Online
  • Analysis of geometric characteristics of GGBS particles

     · The surface areas the average sizes and PSDs of GGBS are shown in Table 2 Table 3 respectively.To judge directly PSD of GGBS by means of the above method the results in Table 3 can be schematically shown in Fig. 5 om Fig. 5 it is seen that the slope of sample C the value of n 1.38 is the largest and that of sample A 0.72 is the smallest.

    Chat Online
  • Study on the particle morphology powder characteristics

    Ball-milled slag powder has better hydration activity than that of vertical-roller-milled slag powder. The difference in the homogeneity coefficients of the two powders is important to the obvious differences in the particle characteristics and hydration activities of the ball-milled and vertical-roller-milled slags.

    Chat Online
  • Ball size or ball masswhat matters in organic

    Ball mass is an important parameter that is known to have an influence on the outcome of a mechanochemical reaction induced by ball-milling. A standard way of modifying the ball mass is to change the size of the ball made of the same material. In this case however a change in mass is accompanied by a simul Editor s Collection Mechanochemistry The Solid State of Pharmaceuticals

    Chat Online
  • Mechanically Alloyed and Nanocrystalline Materials

     · The Dynamics of Magneto-Ball Milling and its Effect on Phase Transformations during Mechanical Alloying A. Calka and J.I. Nikolov 333 Physics of Mechanical Alloying in the Planetary Ball Mill and the Horizontal Rod Mill Kinematic Approach M. Abdellaoui and E. Gaffet 339 The Influence of High-Energy Bail-Milling Conditions on the Kinetics

    Chat Online
  • The evaluation of the x-ray fluorescence (XRF) technique

     · Slag material produced by the Plasma Hearth Process (PHP) varies in chemical composition due to the heterogeneous nature of the input sample feed. X-ray fluorescence (XRF) is a spectroscopic technique which has been evaluated to perform elemental analyses on surrogate slag material for process control. Vitreous slag samples were ground to a fine powder in an impact ball mill and

    Chat Online
  • Influence of ground granulated blast furnace slag on the

     · Alkali-activated materials are low-environmental-impact binders that can be obtained from the alkaline activation of industrial wastes. In this study converter steel slag as the major raw material and ground granulated blast furnace slag (GBFS) as the modified material were activated by water glass with a modulus of 1.5 and a Na2O dosage of 4 . The hydration process microstructure and

    Chat Online
  • Ball milling a green technology for the preparation and

    Ball milling is a simple fast cost-effective green technology with enormous potential. One of the most interesting applications of this technology in the field of cellulose is the preparation and the chemical modification of cellulose nanocrystals and nanofibers. Although a number of studies have been repo Recent Review Articles Nanoscale Advances Most Popular Articles

    Chat Online
  • Influence of slag composition and temperature on the

     · MgO has the same influence as CaO up to about 11 by weight. Increasing the Al 2 O 3 content to 13 and above will result in an increase in early strength and a decrease in the later strength.

    Chat Online
  • Modeling and experiment of slag corrosion on the

     · ModelIng and experIMent of Slag corroSIon on the lIghtweIght aluMIna refractory wIth StatIc MagnetIc fIeld facIng green Metallurgy a. huanga b p. lian a l. fu a h. gu a y.Zou a aThe State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan China

    Chat Online