slag condirtoner using dolomite magnesite

Study on the effect of Si and silicide on ... - SpringerLink

The main phases of the reduction slag from magnesium production by vacuum aluminothermic reduction using dolomite and magnesite as materials and using Al-Si alloy as reductant are CaO·2Al 2 O 3 and 2CaO·SiO 2. It also has amount of unreacted Si. The Al 2 O 3 content of reduction slag is about 55% and SiO 2 is about 10%.

Comparative Analysis of Dolomitic Lime and Chinese ...

Comparative Analysis of Dolomitic Lime and Chinese Magnesite Practices in Electric Arc Furnace Steelmaking Slags. By . ... foamy slag resulted from plants using DRI which inherently caused the slag to foam. This introduced the concept for foamy slag practice in EAF operations. However, in the mid 1990's work continued by several

USE OF MgO BRIQUETTES IN ELECTRIC ARC FURNACES: …

USE OF MgO BRIQUETTES IN ELECTRIC ARC FURNACES: PRINCIPLES & INDUSTRIAL EXPERIENCES AT COMSINAC-CASIMAS. ... measure the rates of solution of dolomite and magnesite using SEM ... Slag Conditioning ...

Olivine as slag conditioner in ironmaking, and its effect ...

A numerical analysis study comparing the effect of olivine, dunite and dolomite as slag conditioner in the sinter and in the blast furnace has been made and verified with reported experimental ...

Slag conditioner composition, process for manufacture and ...

Mar 29, 2011· The use of slag conditioners of this invention also facilitates the production of higher quality steel. When the use of the slag conditioner of the present invention produces a reduction in charge carbon, a major source of sulfur, a concurrent benefit is the avoidance of an addition of sulfur to the steel, a quality advantage.

Sibelco - Olivine | Products

Olivine is a magnesium-iron-silicate with the formula (Mg, Fe)2SiO4. Olivine is actually a name for a series between two end members, iron-rich fayalite and magnesium-rich forsterite. Olivine is often used in metallurgical processes as a slag conditioner, and as a refractory material to make refractory bricks.

SESUVECA DEL PERÚ

In SESUVECA we are dedicated to exploration, exploitation, classification and commercialization of Anthracite and other minerals such as Metallurgic Coke, Pet Coke, Dolomite, Limestone, Quicklime, Bentonite, Magnesite, Olivine Sand, polymetallic, among others, destined to the steel, foundry, aluminum, refractory, ceramic, plastic and glass Industry.

Dolomite - Cargo Handbook - the world's largest cargo ...

D.B. dolomite can stand temperatures upto 2300ºC. It is widely used as a refractory material wherever steel is refined using Basic Slag. It is used for original hearth installations in the open hearth furnaces as well as for hearth maintenance. These hearths are installed using tar-dolomite ramming mixes and rammed dolomite.

GRECIAN MAGNESITE S.A.

Grecian Magnesite is a mining company established in 1959. We process and sell a wide range application - specific grades of raw magnesite, caustic calcined, dead burned magnesia and since 1999 basic unshaped refractories. Our annual sales in 2001 were 30.000 tons of raw magnesite, 110.000 tons of caustic calcined,

RHI Magnesita | Raw Materials

Slag Conditioners. Dolomite, magnesite and magnesia products for the treatment of slag in the steel industry. Magnesium Oxide. Magnesium oxide is a natural product, obtained by controlled calcination of magnesite ore (magnesium carbonate). It shows high chemical purity guaranteed by strict quality control, a high concentration of magnesium ...

Dolomite - Uses | Britannica.com

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 ...

Magnesite Brick, Burned Magnesite Brick, Fused Magnesite ...

KT Refractories offers many Magnesite Bricks, including Burned Magnesite brick, Fused Magnesite brick, Magnesite Alumina brick, Magnesite-Alumina Spinel brick, Magnesia-Chrome brick, Direct-Bonded Magnesite Chrome brick, Rebonded Magnesite-Chrome brick, Semi-Rebonded Magnesite-Chrome brick, Magnesite Dolomite Brick, Magnesia-Carbon bricks, Magnesia-Spinel bricks.

using dolomite in making slag of ladle furnace - BINQ Mining

Jan 20, 2013· Using a slag conditioner to beneficiate bag house dust from a … Nov 22, 2007 · … crushed magnesite carbon brick; ladle slag line brick, steel making furnace … in the basic slag, began to add burned dolomite or a blend of the … »More detailed

Study on extracting aluminum hydroxide from reduction slag ...

Abstract. The reduction slag from magnesium smelting by vacuum aluminothermic reduction using dolomite and magnesite as raw materials consists mainly of Al 2 O 3 and CaO. The alumina is more than 67% of the slag and is mainly in the form of CaO • 2Al 2 O 3.The process of producing aluminum hydroxide from the slag by leaching with a mixture of sodium hydroxide and sodium carbonate was …

US7914599B2 - Slag conditioner composition, process for ...

A slag conditioner containing MgO, carbon or a filler and a binder is mixed and formed under pressure to produce aggregates which can have the form of a briquette. The slag conditioner is used to improve the operating performance and refractory life in steel melting furnaces. A slag conditioner comprising by weight a mixture and 2% to 25% binder for bonded agglomerates or larger particles of ...

GENERAL INFORMATION Iron & Steel Slags about NSA …

dolomite. Therefore, blast furnace slag is a lime based material and has a basic pH. GENERAL INFORMATION ... conditioning, ice control and other uses. Slags are produced in many ... appropriate size when using steel slag for your parking lot or roadway. National Slag Association 25 Stevens Avenue, Building A ...

Dolomitic Quicklime | Graymont

Dolomitic quicklime products have many applications, including use as a flux and slag conditioner in steelmaking, in environmental applications, and wastewater treatment. Graymont has dolomitic quicklime available in all the market regions it serves.

What is steel mill slag? - Quora

Nov 18, 2017· Having spent more than 40 years in steelmaking, I think I am qualified to answer this question – but WIKIPEDIA has already done a fine job of answering it. WIKIPEDIA defines steel plant slag as: "Basic slag is a co-product of steelmaking, and is t...

Slag - Wikipedia

Basic slag is a co-product of steelmaking, and is typically produced either through the blast furnace - oxygen converter route or the electric arc furnace - ladle furnace route. To flux the silica produced during steelmaking, limestone and/or dolomite are added, as well as other types of slag conditioners such as calcium aluminate or fluorspar ...

Agricultural Lime vs. Dolomite Lime - braenstone.com

When to Use Aglime or Dolomite. Before you can even begin to think about whether agricultural lime or dolomite could benefit your soil, you first need to have an understanding of when these materials are actually necessary. Aglime and dolomite both become useful when soil becomes too acidic.

Slag Conditioner - ISM, Inc.

Jul 05, 2018· The slag conditioner of claim 1, wherein the MgO-containing material is one or more material selected from the group consisting of dead burned dolomite, dead burned magnesite, dead burned brucite, fused dolomite, fused magnesite, fused brucite, recycled MgO-containing slags, and pre-fired MgO-containing refractories including recycled magnesium ...

Magnesium: extraction-Metalpedia

Magnesium: extraction; Brife introduction; Magnesium is found in solution in sea-water (about 1.3 kg m-3 magnesium) and in natural brines. It is also found extensively in the ores magnesite (MgCO3) and dolomite (MgCO3.CaCO3). Both of the two types of resources can be used as raw materials to manufacture magnesium metal.

How to Use Dolomite Fertilizer | Home Guides | SF Gate

Use calcitic limestone, not dolomite, if your garden is too acidic but has adequate amounts of magnesium. This reduces your chances of causing problems related to excessive magnesium.

Slag Conditioner | Eryas Mining | olivine sand, EAF, AFS ...

Less raw material need since Olivine contains high MgO according to both serpentine and dolomite. Less slag is obtained by using olivine 75% of time passes in sinter temperature is used for evaporating CO2 when dolomite is used in sinter. Whereas this time becomes 15% …

Activation of ground granulated blast furnace slag by ...

furnace slag by using calcined dolomite Kai Gu1,2,*, Fei Jin 2, Abir Al-Tabbaa, ... of slag than using reactive MgO in the early age while slower than Portland cement in this study. ... some investigations have indicated that reactive magnesium oxide (MgO)

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

Six slag conditioners were prepared based on spent MgO–C bricks (from steel ladles and electric-arc furnaces), dead-burnt dolomite fines (produced in rotary kilns), coke, iron scales and a natural binder (linseed oil). The chemical composition and some properties of the prepared mixtures are presented in Table 1. The main difference among ...

Slag Conditioners - intocast.de

The main reason for consuming magnesitic and dolomitic slag conditioners is the enrichment of slags with basic oxides. They are needed to perform metallurgical work and for the protection of refractory linings. Pneumatically conveyable slag conditioners with higher LOI percentage also provide ideal support in slag foaming.

Dissolution of Magnesite and Dolomite in Simulated EAF Slags

For magnesite the rate follows that predicted for liquid phase mass transfer control. For dolomite the mechanism is more complex. The CaO dissolves away and the MgO grains are released into the slag where they dissolve. For EAF conditions, the rates of dissolution of magnesite and dolomite will be approximately the same.