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Additon Of Dolomite In Slag

Dec 10, 2020 The addition of dolomite to a slag-based geopolymer matrix can improve its engineering properties and reduce disposal problems. This paper discusses the effect of alkali solution concentration, curing temperature and different proportions of slag and dolomite on the strength of geopolymer mortars. For maximum strength, the optimum ratio of slag ...

  • Engineering and durability properties of slag–dolomite ... Engineering and durability properties of slag–dolomite ...

    Dec 10, 2020 The addition of dolomite to a slag-based geopolymer matrix can improve its engineering properties and reduce disposal problems. This paper discusses the effect of alkali solution concentration, curing temperature and different proportions of slag and dolomite on the strength of geopolymer mortars. For maximum strength, the optimum ratio of slag ...

  • Study on the dissolution of lime and dolomite in … Study on the dissolution of lime and dolomite in …

    `FeO come into the slag by oxidation, and CaO in the slag is due to the addition of different fluxes. In industry, lime and doloma are very important slag additives in primary steel making process. The dissolution of lime (or limestone) and doloma (or dolomite) into different slag systems has been the topic of many researchers [1]-[18]

  • Development of Ground-Granulated Blast-Furnace Slag ... Development of Ground-Granulated Blast-Furnace Slag ...

    Nov 01, 2019 It is observed that the addition of dolomite into slag-based GPC reduces the setting time, enhances workability, and rapidly improves the early-age strength. Addition of dolomite into slag GPC also improves the durability properties, such as high resistance towards water absorption, sorptivity, marine attack, and chemical attack.

  • Recycling practices of crushed MgO-C bricks and … Recycling practices of crushed MgO-C bricks and …

    the slag can be either by pure dolomite additions to the slag, waste MgO-C refractories addition to the slag, or from the working face of the refractory lining dissolving into the slag. In this context, two source of MgO available to the refractory industry were selected: 1) MgO-C spent refractory; 2) Dolomite sinter or Dead-burned dolomite fines.

  • Activation of ground granulated blast furnace slag by ... Activation of ground granulated blast furnace slag by ...

    Oct 15, 2014 The performance of the different calcined dolomite activated slag pastes were then compared using compressive tests, pH measurement of pore solutions, powder X-ray diffraction (XRD) and thermogravimetric analysis (TGA). In addition, CaO activated slag paste was prepared as a reference. 2. Materials and methods2.1. Materials

  • Limestone and Dolomite and their Use in Iron and Steel ... Limestone and Dolomite and their Use in Iron and Steel ...

    May 08, 2013 basic, Calcined dolomite, dolomite, flux, lime, limestone, neutraliziing, Sintered dolomite, slag, Limestone and Dolomite and their Use in Iron and Steel Plant. Limestone is a naturally occurring mineral. The term limestone is applied to any calcareous sedimentary rock consisting essentially of calcium carbonate (CaCO3) in the form of the ...

  • METALLURGICAL USES FLUXES FOR METALLURGY METALLURGICAL USES FLUXES FOR METALLURGY

    attacked by the slag, so common practice includes addition of 5 to 10% magnesia (magnesium oxide) to help prevent attack on the refractory in the vessel (Boynton, 1980, Lankford, Jr., et al., 1985). In copper smelting, an acid slag practice is used, and silica is added for repair of refractories in some parts of the smelting furnaces

  • Activation of ground granulated blast furnace slag by ... Activation of ground granulated blast furnace slag by ...

    significantly accelerate the early hydration of MgO-slag without sacrificing the long-term strength. In addition, when the MgO/CaO ratio was ≤1 by weight, only a small difference in compressive strengths of pastes was observed. Dolomite is a naturally occurring …

  • Dolomite and dolomitization model- a short review ... Dolomite and dolomitization model- a short review ...

    Jul 13, 2018 Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg (CO 3) 2 . The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone. Dolomite is an unusual carbonate mineral.

  • Effects of calcined dolomite addition on reaction kinetics ... Effects of calcined dolomite addition on reaction kinetics ...

    Calcined dolomite addition accelerates reaction kinetics of Na 2 CO 3-activated slag. Abstract In the present study, an environment-friendly one-part alkali-activated cement dry mixture was prepared by using blast furnace slag as the aluminosilicate precursor, solid sodium carbonate as the alkali activator and calcined dolomite (CD) as the ...

  • Replacement of Cement with Dolomite Powder: An ... Replacement of Cement with Dolomite Powder: An ...

    percentage of PC is substituted with either slag and other mineral additives such as limestone and silica fume, are now commonly used, and which reduce the production of PC, as well as enhance the performance. Many materials are used to manufacture good quality concrete. ... addition of dolomite powder the Split Tensile strength decreases. We ...

  • (PDF) Impact Resistance of GGBS-Dolomite Geopolymer ... (PDF) Impact Resistance of GGBS-Dolomite Geopolymer ...

    Addition of dolomite into slag GPC also improves the durability properties, such as high resistance towards water absorption, sorp- tivity, marine attack, and chemical attack.

  • Modeling and Optimization of the Electric Arc Furnace … Modeling and Optimization of the Electric Arc Furnace …

    5 mass of solid slag [kg] (lime, dolomite, etc. as slag additions) u 4i EMS current [A] x 6 mass of liquid slag [kg] (lime, dolomite, etc. as slag additions, not including FeO) u 5i Natural gas flow [Nm3/min] x 7 mass of FeO in slag [kg] u 6i DRI addition flow [kg/min] x 12 bath and molten slag temperature [K] u 7i Slag addition flow [kg/min ...

  • Natural Flake Graphite & Carbon Fiber VS Dolomite … Natural Flake Graphite & Carbon Fiber VS Dolomite …

    Nov 19, 2017 Air-slag-metal resistance was measured on dolomite- carbon samples in the temperature range of 2,960 to 3,000 F using an AISI 1020 (low carbon) grade of steel and an aggressive acid slag (table 5). About 1 pct of Si metal was maintained in the steel to deoxidize the metal.

  • Study on the dissolution of lime and dolomite in … Study on the dissolution of lime and dolomite in …

    `FeO come into the slag by oxidation, and CaO in the slag is due to the addition of different fluxes. In industry, lime and doloma are very important slag additives in primary steel making process. The dissolution of lime (or limestone) and doloma (or dolomite) into different slag systems has been the topic of many researchers [1]-[18]

  • Placement of dolomite, superphosphate, and basic slag for ... Placement of dolomite, superphosphate, and basic slag for ...

    A mixture of superphosphate and dolomite sown in contact with the seed increased the yield of peas over no fertilizer, but the addition of muriate of potash to the mixture depressed the yield. Fertilizers placed in mixture or separately 1-4 inches below or at the side of the seed considerably increased the yields in general, though the best results with basic slag on vetches were obtained by...

  • Slag foaming by carbonates addition: studies of … Slag foaming by carbonates addition: studies of …

    energy effect of both limestone and dolomite addition. The results showed that during liquid bath, when slag foaming is possible and temperature is relatively high, the addition of Ca and Mg carbonates demands only 60-70% of the theoretical decomposition energy while the addition during scrap melting required almost full amount of energy. The

  • Why Do We Use Dolomite During Slag Splashing? It Has A … Why Do We Use Dolomite During Slag Splashing? It Has A …

    Jun 06, 2021 If we did slag splashing the lining life go above 2000 heats. In this process, the left out slag in LD process, we have to maintain composition such that 13% Feo and 8% MgO. So, why we need to Feo and MgO? Both are improving the fluidity of the slag compare to CaO. we need good fluidity to form uniform coating through out converter.

  • Replacement of Cement with Dolomite Powder: An ... Replacement of Cement with Dolomite Powder: An ...

    percentage of PC is substituted with either slag and other mineral additives such as limestone and silica fume, are now commonly used, and which reduce the production of PC, as well as enhance the performance. Many materials are used to manufacture good quality concrete. ... addition of dolomite powder the Split Tensile strength decreases. We ...

  • Evaluation of Sulfate Resistance of Calcined Dolomite ... Evaluation of Sulfate Resistance of Calcined Dolomite ...

    The results demonstrated the good potential of using calcined dolomite activated slag in resisting sulfate attack. Immersion in Na 2 SO 4 (aqueous) led to an increase in strength in both the D800 (D800S) and the portland cement CEM I 52.5 N (PCS) activated slag with a more pronounced effect in the former and a decrease in the D1000 (D1000S ...

  • Role of Slag in Converter Steelmaking – IspatGuru Role of Slag in Converter Steelmaking – IspatGuru

    Aug 01, 2015 Slag is formed during refining of hot metal in which Si oxidizes to SiO2, Mn to MnO, Fe to FeO, and P to P2O5 etc., and addition of oxides such as CaO (lime), MgO (calcined dolomite), iron oxide, and others. The addition of oxides is done to obtain desired physico-chemical properties of slag like melting point, basicity, viscosity etc.

  • Dolomite - Uses | Britannica Dolomite - Uses | Britannica

    Dolomite - Dolomite - Uses: Dolomite is used as a source of magnesium metal and of magnesia (MgO), which is a constituent of refractory bricks. Dolostone is often used instead of limestone as an aggregate for both cement and bitumen mixes and also as a flux in blast furnaces. The use of dolostone as a flux has increased, especially since environmental contamination has become a widely heeded ...

  • How to Use Dolomite Fertilizer | Home Guides | SF Gate How to Use Dolomite Fertilizer | Home Guides | SF Gate

    How to Use Dolomite Fertilizer. Variously called dolomitic limestone or just dolomite, garden-grade calcium magnesium carbonate raises the pH level of acidic soils. When pH levels are too low, the ...