Product center

A common choice of global customers

  • Seven-day test result assessment of the developed strength

     · Fig. 2 shows the flow test results of slag powder mortar with BSSF slag. It is observed that the flow value increases with the replacement of natural sand by BSSF and the water-binder ratio. When the water-binder ratio is 0.45 and BSSF slag replaces 0–50 of the natural sand the flow values are 105 109 and 114 which is within the standard of 110 ± 5 .

    Chat Online
  • The Diamond Jubilee Issue Selected Topics in Iron and

    in all facilities at JFE Steel. After desulfurization the slag is recycled while still hot to utilize the de-S capacity of the unreacted CaO. 2.3. Hot Metal Dephosphorization 2.3.1. Recent Research on Thermodynamics and Kinetics of Hot Metal Dephosphorization Fluorspar (CaF 2)

    Chat Online
  • The reaction between Ca2 from steel slag and granulated

     · Steel slag (SS) is an industry waste produced in the process of iron smelting. In China the amount of SS is about 80 million tons (Wu et al. 1999 Li et al. 2011).The accumulation of SS results in serious environmental problems and social concerns (Huang et al. 2016) this sense the utilization of SS needs to be explored urgently (Li et al. 2013).

    Chat Online
  • Surface Preparation for Galvanized Steel To Be Painted H

     · steel currently exist however. For fully weathered zinc the surface may be hand-prepared with either abrasive pads or a stiff brush to remove all loose-ly adherent materials and to make sure that the bright zinc s u r f ace is not restored. This is followed by a hot detergent wash and a

    Chat Online
  • Piotr SCHELLER Technische Universität Bergakademie

    In the continuous-casting mold the mold powder in contact with the liquid steel surface forms a liquid slag layer. The flow along the steel-slag interface generates shear stress at the interface

    Chat Online
  • Slag-Steel Emulsification on a Modified RH Degasser

     · Higher dispersion of de-S reagent inside the steel can lead to higher inclusionary levels than desired. 22 23 24 25 However inclusion removal can be assured as in a regular RH reactor if both legs are further dipped into liquid steel ceasing the extra dispersion (Figure 1).RH with this modification then comprises slag dispersion with shorter down leg immersed in the slag followed by an

    Chat Online
  • Treatments of Magnesium Slag to Recycle Waste from

    The slag powder after mixing with 0.4-0.6 of borates and sintered at 1200°C in 5-6 hours has become volume stable aggregates. It is then possible to use the treated slag in constructions saving valuable natural resources and decreasing the global warming impact from magnesium production via Pidgeon process. Access through your institution.

    Chat Online
  • Printability and physical properties of iron slag powder

     · Slag which is usually a mixture of metal oxides and silicon dioxide is the largest fraction of the by-products of iron smelting. Slag is classified according to its characteristics and there have been various reports on recycling processes utilizing it 1 2 3 4 5 .Additionally it can be used as a base-building material by mixing it with other substances.

    Chat Online
  • Three-Stage Method Energy–Mass Coupling High

     · High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag. The waste heat energy in the high-temperature molten steel slag can be fully recovered through the three-stage heat exchange. Through mass balance and

    Chat Online
  • How to troubleshoot cut quality problemstoo much

    (Oxygen plasma gas reacts with carbon steel to produce a finer spray of molten metal each droplet having a lower surface tension. This molten spray is more easily ejected from the kerf). The dross free window is also affected by material type. For instance cold rolled steels cut cleaner than hot rolled and pickled steels cut cleaner than non

    Chat Online
  • Composition and Temperature Slag ing

    Steel Corporation. (Received on January 6. 1992 accepted in final form on February 28. 7992) The slag ing behavior caused by the reaction between FeOcontaining slag and hot metal was investigated for the CaO-SiO.-Al.03-P=0=-TiO.-MnO-MgO-CaF system. Thepeakof slag ing height wasobserved when(CaO)/(SiO.) wasaround 1.2 and the peak value

    Chat Online
  • Common Methods of Testing Steel Material Leeco Steel

     · With over 3 500 grades of steel available engineers depend upon accurate material testing to determine the materials needed for each specific project. Chemical composition of steel materials tells a lot about the material s tendencies but testing ultimately proves

    Chat Online
  • An Overview of Utilization of Steel SlagScienceDirect

     · The current utilization rate of steel slag is only 22 in china far behind the developed countries. At present the amount of slag deposited in storage yard adds up to 30Mt leading to the occupation of farm land and serious pollution to the environment. Improving the slag utilization is an important way to resolve these problems.

    Chat Online
  • Kinetic Study of the Devitrification of Mold Powder Slags

     · A batch of 19 g of ground mold powder was melted and superheated to 1300ºC in a graphite crucible heated by induction. After maintaining for 5 minutes the molten slag was poured into a brass mold at 100ºC this temperature was chosen to ensure that the material solidified fully glassy and without experiencing thermal shock.

    Chat Online
  • Seven-day test result assessment of the developed

     · Fig. 2 shows the flow test results of slag powder mortar with BSSF slag. It is observed that the flow value increases with the replacement of natural sand by BSSF and the water-binder ratio. When the water-binder ratio is 0.45 and BSSF slag replaces 0–50 of the natural sand the flow values are 105 109 and 114 which is within the standard of 110 ± 5 .

    Chat Online
  • (PDF) Study on Preparation and Properties of Unburned

     · Hot stuffing steel slag 33.79 13.81 2.76 3.60 23.86 2.14 2.51 . slag fly ash and clay and the properties of the powder are different and the particle size distribution of .

    Chat Online
  • Slag Cement Questions

    Slag cement is the hydraulic cement that results when molton slag from an iron blast furnace is rapidly quenched with water dried and ground to a fine powder. The rapid quenching ("granulation") "freezes" slag cement in a glassy state and imparts cementitious properties to the product when ground finely.

    Chat Online
  • Special Metallurgical Production Processes of Ingots

     · thin slag skin thickness (0 5-1 5mm) • Well adjusted starting curve and slag filling sequenz resulting in no unremelted slag at the bottom part of the ingot • Controlled hot topping procedure (power as well as melt rate controlled possible) resulting in a complete dense top part of the ingot Shown results courtesy of

    Chat Online
  • Piotr SCHELLER Technische Universität Bergakademie

    Piotr R. Scheller. The effect of temperature atmosphere and elemental concentrations of boron and phosphorous in ferrous alloys on the wettability of polycrystalline α-Al2O3 was studied. The

    Chat Online
  • Three-Stage Method Energy–Mass Coupling High-Efficiency

     · High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag. The waste heat energy in the high-temperature molten steel slag can be fully recovered through the three-stage heat exchange. Through mass balance and

    Chat Online
  • Conversion of Mill Scale Waste into Valuable Products via

    Mill scale is one of waste materials which is produced as a result of hot rolling of steel in all steel companies. On the other hand mill scale is considered a rich iron source with minimum impurities. This work aims at conversion of mill scale by adjusting smelting processes to produce different valuable products. The smelting processes were carried out using carbothermic reduction in a

    Chat Online
  • (PDF) Evaluation of Durability and Mechanical Properties

    For example four kinds of steel slags i.e. hot-spray poured steel slag hot-stuffing steel slag short-flow steel slag and wind-quenched steel slag were used as supplementary cementitious

    Chat Online
  • Steel slag treatment processgreatwallcorporation

     · Steel slag treatment process News Date 13 38 44. At present with the development of steel slag portland cement technology the fine powder of steel slag processed by grinding equipment can be applied to concrete and cement as a new admixture greatly improving the utilization rate of steel slag. However it is proposed in the "Industrial Green Development Plan" that

    Chat Online
  • SECTION 055000METAL FABRICATIONS

     · Steel Sections ASTM A992 hot-dip galvanized for exterior use. Steel Pipe ASTM A53 Type S Grade B Schedule 40 typical unless otherwise noted. Pipe used for handrails and railings shall be hot-dip galvanized after fabrication powder coated for exterior use 1-1/2 inch 32mm ID unless otherwise noted.

    Chat Online
  • What is Hot Loading or Hot Stuffing MarineGyaan

    The term "Hot-Loading" or "Hot-Stuffing" refers to the situation where the temperature of cargo stuffed into a container is higher than the temperature setting according to the B/L. Manual defrost onboard the vessels or on the terminals must be performed every 3-6 hours until the cargo is on temperature. The reefer machinery will be put

    Chat Online
  • Powder Metallurgy and Sintered Materials

     · together and containing slag and coal particles. This lump subsequently had to be hot-worked by the blacksmith to obtain a fully dense metal-lic product with sufficient strength to be used as a tool or a weapon. Virtually all the elaborate arms and armor displayed in museums have thus been produced by a sort of "powder forg-ing" technique.

    Chat Online
  • Hydration Properties of STS-Refining Slag-Blended Blast

     · The refining process using an aluminum deoxidizer for fabricating stainless steel generated steel slag (STS-refining slag (SRS)) that contains a large amount of Al 2 O 3 and is a compound of mainly 12CaO·7A l2 O 3 and 3CaO·A l2 O 3 . When SRS was mixed with slag cement rapid exothermic reaction occurred in the initial phase of hydration.

    Chat Online
  • Standard Specification for Hot Dip Galvanizing

    Prior to commencement of design it is recommended that the designer/fabricator refer to Australian/New Zealand Standard 2312.2 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings Part 2 Hot dip galvanizing and to the chapter on Design in the manual After Fabrication Hot Dip Galvanizing

    Chat Online
  • An Introduction to Steel and Steel Metallurgy

     · • An alloy (mixture) of iron and carbon (<2.0 ) • Plain Carbon Steel contains Manganese (>0.25 ) • Alloy steels contain additional alloying elements

    Chat Online
  • Characteristics of Di Furnace Slag Filler and its Influence

     · Steel slag is a common by-product of the steelmaking industry and its output is about 10 to 15 of steel production in the world 1–3 . As a major type of steel slag basic oxygen furnace (BOF) slag has strong alkalinity rich angularity tough surface

    Chat Online
  • Effect of Reduction Degree on Characteristics of Slag

     · reduction degree on the characteristics of slag formed. The results reveal that the phosphorus content in the metallic phase can be brought down to 130ppm merely by the self-fluxing slag even though the slag weighs only about 8 of the metal. It shows a great potential in reducing the amount of slag formers in the steelmaking process.

    Chat Online
  • Slag-Steel Emulsification on a Modified RH Degasser

     · A new arrangement of RH snorkels is proposed in order to improve the slag metal interaction. According to this RHDeS design the steel jet flowing down from the vacuum chamber discharges inside the slag layer. Physical modeling of a reactor following this concept was performed. Mixing times circulation rates and the mass transfer coefficient were evaluated as well as the droplet

    Chat Online
  • Quantitative Determination of Metallic Iron Content in

     · Samples Slag 1 Slag 2 Slag 3 Slag 4 Slag 5 Slag 6 Total Fe 55.47 28.03 41.88 17.27 23.89 22.51 Metallic Fe 28.09 4.84 37.88 3.03 3.19 5.63 The results given in Table 2 indicate different steel slags have different iron units and different metallic iron contents. Accurate measurement of

    Chat Online
  • Michigan Technological University Digital Commons

     · The steel-slag aggregate has a mean particle size of approximately 6mm whereas the steel-slag powder is much finer with a mean particle size of approximately 0.5mm 25 of which pass through a No. 200 (75-lm) sieve. The used fly. TABLE 1 Chemical compositions of the tested steel slag and flyash. Chemical Element SiO. 2. Al. 2. O. 3. Fe. 2

    Chat Online
  • How to troubleshoot cut quality problemstoo much

    (Oxygen plasma gas reacts with carbon steel to produce a finer spray of molten metal each droplet having a lower surface tension. This molten spray is more easily ejected from the kerf). The dross free window is also affected by material type. For instance cold rolled steels cut cleaner than hot rolled and pickled steels cut cleaner than non

    Chat Online
  • Preparation and application of the cement-free steel slag

     · The steel slag that is the tailing after magnetic separation is taken from Wuhan Iron and Steel Group Corporation in China. The main chemical components of the steel slag are CaO SiO 2 Al 2 O 3 Fe 2 O 3 FeO MgO P 2 O 5 MnO.The physical and mechanical properties of the steel slag are given in Table 1.The steel slag is directly used without grinding.

    Chat Online
  • Effect of Steel Slag Aggregate on Pavement and Flame

     · long-term accumulation of steel slag. S.A. Ziaee et al. 22 investigated the effect of Saso- bit additive and partial replacement of coarse aggregates with electric arc furnace steel slag (EAFS) on the mechanical properties of hot-mixed asphalt (HMA) and warm-mixed

    Chat Online
  • What is "black rust" on steel Finishing

    We identified the black rust by stains (aka blooms ) on the magnesite and then later on the concrete top surface after removing the magnesite. When the steel bars were exposed we fond exactly what Fred had described. The outer surface of the steel was dark gray to black and

    Chat Online
  • How to Clean New Steel Without Sandblasting 4 Steps

    How to Clean New Steel Without Sandblasting In this Instructable I will show you one other way of prepping your metal for paint or powder coating. Sandblasting is not always available. And other times you may not want grind marks to be visible. Pickling can be a nasty process and not al

    Chat Online
  • Preparation and application of the cement-free steel slag

    For example four kinds of steel slags i.e. hot-spray poured steel slag hot-stuffing steel slag short-flow steel slag and wind-quenched steel slag were used as supplementary cementitious

    Chat Online