Engineering and durability properties of slag–dolomite …

Ground-granulated blast-furnace slag and dolomite are by-products from the steel manufacturing and rock crushing industries, respectively. 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 …

Effect of calcined dolomite addition on sodium carbonate-activated slag ...

This paper reports the performances of sodium carbonate-activated slag cements incorporating calcined natural dolomite (CD) under sealed and ambient curing conditions. The reaction process, compressive strength development and microstructure characteristics are studied, as well as the carbonation behaviour of the samples under ambient curing conditions. The CD …

Dolomite Usage In Iron and Steel Industry | Aravali Onyx

Dolomite (CaMgCO3)2 is a naturally occurring dry carbonate mineral having calcium and magnesium carbonate as its primary components. It is also known as dolostone, a mineral that forms the major constituent of sedimentary rocks. It is also a constituent of metamorphic rocks and limestone.

Study on the dissolution of lime and dolomite in converter slag

`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]

Dissolution mechanism of dolomite in converter slag at 1873K

The mechanism of dolomite dissolution in converter slag was studied and found to proceed by two steps: decomposition of dolomite into CaO and MgO and dissolution of the product into the slag. ... While addition of small amounts of dolomite directly into the slag could be considered in steelmaking converter, too much would result in slow ...

Dolomite Usage In Iron and Steel Industry | Aravali Onyx

Dolomite for Steel Industry . In addition to being a raw material for the paint industry and iron manufacturing, dolomite also plays a vital role in steel making. Given its acidic nature, the dolomite used in the steel industry must contain less than 1% of silica. ... Dolomite and Modern Technology . The slag splashing technology is now being ...

Dissolution of dolomite and doloma in silicate slag

Abstract Dissolution mechanisms of dolomite CaMg(CO3)2, and doloma CaO.MgO, in a model basic oxygen furnace (BOF) slag based on the CaO–MgO–SiO2–FeO–MnO system have been characterised with regard to the reaction product phases at the dolomite/slag and doloma/slag interfaces by post-mortem microstructural …

Effects of calcined dolomite addition on reaction kinetics of one …

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 ...

Effect of calcined dolomite addition on sodium carbonate-activated slag ...

Both reactive MgO and CaO are alternative activators for ground granulated blast furnace slag (GGBS). In this study natural dolomite, as a source of MgO and CaO, was calcined at 800 °C (D800) and ...

Recycling practices of crushed MgO-C bricks and dolomite …

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.

Limestone and Dolomite and their Use in Iron and Steel …

Hence, in commercial parlance, the rock containing 40 % to 45 % MgCO3 is normally called dolomite. Dolomite rock which contains in addition to dolomite either calcite or a mixture of calcite and magnesite are called …

Effects of calcined dolomite addition on reaction kinetics of one …

Request PDF | Effects of calcined dolomite addition on reaction kinetics of one-part sodium carbonate-activated slag cements | In the present study, an environment-friendly one-part alkali ...

Calcination Condition of Dolomite‐Based Materials Influencing …

The addition of basic additives in steelmaking processes is essential because these lead to slag adaptation and enable refining reactions. In calcination treatment, the process parameters temperature and dwell time influence the decomposition of dolomite as a magnesium-containing lime substitute.

Chemical, Mineralogical, and Morphological Properties of Steel Slag

The impurities combine with the burnt lime or dolomite forming slag and reducing the amount of undesirable substances in the melt. Samples of the molten metal are collected near the end of the blowing cycle and tested for their chemical composition. ... The addition of silicon and aluminum during deoxidation forms silica (SiO 2) and alumina (Al ...

Calcination Condition of Dolomite‐Based Materials

Request PDF | Calcination Condition of Dolomite‐Based Materials Influencing Static Dissolution in Synthetic EAF Slag | The addition of basic additives in steelmaking processes is essential since ...

Effect of calcined dolomite addition on sodium carbonate …

This paper reports the performances of sodium carbonate-activated slag cements incorporating calcined natural dolomite (CD) under sealed and ambient curing conditions. The reaction process, compressive strength development and microstructure characteristics are studied, as well as the carbonation behaviour of the samples under ambient curing conditions. …

Dolomite Aggregate - an overview | ScienceDirect Topics

Dolomite Aggregate. Dolomite aggregate reacts with OH– anion in the cement paste and creates Mg2+ and CO32− cations [4]. ... In some cases, the addition of fly ash and slag increased strength by 3% and 14%, respectively [20]. Some of the researchers tried the saturated limewater that was found to be efficient only with fly ash concrete [68 ...

Effect of calcined dolomite addition on sodium carbonate-activated slag ...

This paper reports the performances of sodium carbonate-activated slag cements incorporating calcined natural dolomite (CD) under sealed and ambient curing conditions. The reaction process, compressive strength development and microstructure characteristics are studied, as well as the carbonation behaviour of the samples under ambient curing conditions.

Effect of calcined dolomite addition on sodium carbonate …

Both reactive MgO and CaO are alternative activators for ground granulated blast furnace slag (GGBS). In this study natural dolomite, as a source of MgO and CaO, was calcined at 800 °C (D800) and ...

How to Use Dolomite Fertilizer | Home Guides | SF Gate

4. Put on protective gloves and long sleeves and pants, as well as a mask. Scatter the dolomite over the surface of your soil, using a rake to ensure that it is distributed evenly.

What is the use of Dolomite in Furnaces? - Mahaveer …

Now the slag can be removed by simple heating techniques. Addition of dolomite through sinter is preferred because the CO2 present in the dolomite will be removed in this process. In the case of sintering, the particles of dolomite are crushed to a size of 3mm. However, in the case of direct feeding lumps of dolomite are used.

Influence of dolomite on the properties and

In addition, dolomite that was used for construction was also in raw dolomite form. Dolomite also has the ability to absorb poisonous and toxic substances [8,54, 55]. Table 2 …

Dissolution mechanism of dolomite in converter slag at 1873K

Dissolution mechanisms of dolomite CaMg(CO3)2, and doloma CaO.MgO, in a model basic oxygen furnace (BOF) slag based on the CaO–MgO–SiO2–FeO–MnO system have been characterised with regard ...

Development of Ground-Granulated Blast-Furnace Slag-Dolomite Geopolymer ...

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. ...

additon of dolomite in slag - villagoofy.nl

additon of dolomite in slag. additon of dolomite in slag,The Basic Oxygen Steelmaking BOS Process Slag in the ladle results in titanium are fed at the ladle furnace as powders sheathed in a mild,The dolomite mineral 21 MgO, 29 CaO, 23 SiO2,, The experimental profiles of slag temperature change after the addition of the calibration pieces of...

Effects of Light-Burnt Dolomite Incorporation on the Setting, …

This study investigates the potential of light-burnt dolomite (LBD) as a supplementary cementitious material with ground granulated blast furnace slag (GGBFS) and Ordinary Portland cement (OPC). In this work, LBD was substituted for up to 20% of GGBFS in sodium sulfate-activated slag systems. The ef …

Dolomite – Its Processing and Application in Iron and ... - IspatGuru

Addition of dolomite through sinter is more preferred route since CO2 of dolomite is driven out during the sintering process. In case of sintering, dolomite is crushed to -3 mm (in the range of 85 % to 90 %) in hammer …

Effect of calcined dolomite addition on sodium carbonate-activated slag ...

This paper reports the performances of sodium carbonate-activated slag cements incorporating calcined natural dolomite (CD) under sealed and ambient curing conditions. The reaction process, compressive strength development and microstructure characteristics are studied, as well as the carbonation behaviour of the samples under ambient curing conditions. …

Recycling MgO–C refractories and dolomite fines as slag ing ...

The slag ing process is currently applied in the steel production due to its greater benefits, i.e., reduction of energy losses, enhancement of the refractory service life and productivity, etc. Lime/dolomite, oxygen and carbon are usually added during an electric arc furnace (EAF) operation to adjust the liquid basicity and saturation and also provide suitable …

Impact of the addition of dolomite to cream-firing clays on the

The topic of color changing of ceramic materials from cream-firing clays with the use of mineral additives has not been addressed to date. The aim of the paper was to investigate the effect of granulation of dolomite additives to ceramic masses based on cream-firing Borkowice clay on the color and properties of fired ceramic materials.

Dissolution of Magnesite and Dolomite in Simulated EAF Slags

Dolomite and magnesite are used as flux additions in EAF steelmaking for refining, refractory protection and developing a ing slag. For these materials to perform these functions they must be in solution in the slag. In this study the mechanism and rates of solution of dolomite and magnesite were determined for EAF slag compositions using several techniques including …

Effects of calcined dolomite addition on reaction kinetics of …

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 ...

Development of Ground-Granulated Blast-Furnace Slag‑Dolomite …

This paper focuses on the development of GPC using ground-granulated blast-furnace slag (GGBS) and dolomite (by-product from rock crushing plant) as source materials. Strength properties of slag-based GPC are studied with different proportions of dolomite. It is observed that the addition of dolomite into slag-based GPC reduces the setting time ...

Study on the dissolution of lime and dolomite in converter …

`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]

additon of dolomite in slag - villagoofy.nl

Additon Of Dolomite In Slag. Slag is the glass-like by-product left over after a desired It was also ground into powder to add to glazes for use in limestone and/or dolomite are Get Price And Support Online Dissolution mechanism of dolomite in converter slag at While addition of small amounts of dolomite directly Dissolution mechanism of ...