slag condirtoner using dolomite magnesite

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

measure the rates of solution of dolomite and magnesite using SEM analysis and rotati ng cy l- ... Slag Conditioning Additive in the EAF." In 2000 EAF Conference, pp. 379-390. [11

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 ...

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 ...

of dolomite, magnesite and serpentine, ... During 1980-85 many of the European iron producers replaced dolomite as slag conditioner with olivine due to the positive effects of olivine, especially ...

Sep 01, 2013· 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 ...

Aug 13, 2021· Limestone, magnesite and dolomite are the primary fluxes used in steelmaking to create a basic slag and promote the refining of hot metal. MgO-based fluxes are added to retard the refractory and gunning consumption as MgO-saturated slag reduces the chemical attack on metallurgical vessels.[1,2,3,4] It is clear that achieving MgO saturation in the slag has a direct impact on the …

MgO saturated slag with the presence of suspended second phase particles (MgO C FeO magnesium wustite (MW))(3). Consequently, the basicity and FeO content affect the amount of slag conditioners needed to saturate a slag. Figure 1 demonstrates the ideal …

Magnesite Dolomite Refractory Bricks are produced from magnesia that has high purity and density, and sintered Magnesia Dolomite grain. Magnesite Dolomite Refractory Bricks have the advantages of good thermal resistance, anti-spalling performance, good coating protection to the kilns when they are used for cement rotary kilns.

Aug 13, 2021· 10%· Limestone, magnesite and dolomite are the primary fluxes used in steelmaking to create a basic slag and promote the refining of hot metal. MgO-based fluxes are added to retard the refractory and gunning consumption as MgO-saturated slag reduces the chemical attack on metallurgical vessels.[1,2,3,4] It is clear that achieving MgO saturation in the slag has a direct impact …

Two thermal processes are in use to recover magnesium metal from dolomite—the Pidgeon and the Magnetherm. Although both use the same basic chemistry, the Pidgeon process uses an external heat source, and the Magnetherm process uses heat generated by the ... Alumina reduces the melting point of the slag produced by the dolomite-ferrosilicon ...

through the utilization of dolomite and MgO briquettes as slag conditioners. The use of both ... saturation, for instance dolomite, magnesite[8], MgO Briquettes and recycled bricks[9,10,11]. ...

The choice of start-up slag composition depends on the type and the composition of the charge recipes used in the magnesium Start-up slags for producing magnesium from dolomite ore in a Magnethermic reactor by I.M. Morsi*, and H.H. Ali* Synopsis The present study …

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% …

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 Dolomite sinter or Dead-burned dolomite is generally used in the refractory industry for the refractory made by firing dolomite, with or without additives, at high temperature to produce dense, well-shrunk particles. This refractory is widely used wherever steel is refined using basic slag and can stand temperatures up to 2.300ºC.

M.J. Lehtinen, in Mineral Deposits of Finland, 2015 Magnesite. In addition to calcite and dolomite, magnesite is a carbonate mineral with economic interest in Finland, especially when obtained as a potential by-product of talc production from soapstones. This carbonate mineral forms the MgCO 3 –FeCO 3 solid solution and in Finland is mostly ferroan magnesite (breunnerite) in composition.

A slag conditioner containing MgO, up to 50% slag-making carbon, 10 to 60% particulates of bag house dust and dropout box particles and 2% to 25% binder is mixed and formed under pressure to produce aggregates which can have the form of a briquette. The MgO content of the mixture comprising: 20% to 90% burned aggregates comprised of particles less than 8 mm of which at least 30% is 0.2 mm or ...

Dolomite Previous Next Dolomite is an earthy mineral. It is a carbonate mineral, also known as Calcium Magnesium Carbonate. Generally it is white to off white in color. Its chemical formula is CaMg(CO₃)₂. The Dolomite is extensively used in iron & steel industries due to its strength and compatibility in […]

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 ...

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 methods 2.1 Materials

Raj Ceramics, a unit company of Raj Refractories Private Limited, was established in the year 1983 in eastern part of India with setting up its manufacturing unit at Hardag, District Ranchi ...

It stabilizes the behavior of magnesium oxide in blast-furnace slag when melting sinter and agglomerate in a blast furnace, and increases furnace capacity. FluMag advantages. The best alternative to using dolomite, magnesite, or limestone in the production of agglomerate and nuggets. The lowest impurity content. As compared with dolomite, it ...

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 ...

FIELD: metallurgy. SUBSTANCE: addition for slag contains, on weight basis, mixture and 2% to 25% of bonding agent for bonding of lumps or larger particles of the above mixture including 20% to 90% of calcined aggregates containing particles with size of less than 8 mm, of which at least 30% have size of 0.2 mm or more, and containing 35% to 94% MgO, to 50% of slag-forming carbon-containing ...

to be charged to the furnace and as the result the slag ratio, which is the factor of slag quantity by producing of 1ton molten iron, can't be reduced. Therefore, for example, in the patent (Application No. 1997–143580) the method, which use Dolomite and calcined Dolomite etc. are used as MgO-CaO contain auxiliary material, to

A slag conditioner comprising, by weight, a mixture and from 2% to 25% binder to bind agglomerates or larger particles of said mixture, said mixture comprising: from 20% to 90% of calcined aggregates composed of lower particles at 8 mm, of which at least 30% are 0.2 mm or more and contain between 35% and 94% MgO, up to 50% carbonaceous additive for slag production, and up to 50% light …

In this study, we explored the feasibility of producing fibers using fly ash and magnesium slag. The results show that the melting temperature of the blends composed of fly ash, magnesium slag, and a small amount of calcined dolomite first decreased and then increased with an increase in acidity coefficient (M k) from 1.0 to 2.4.

Calcined dolomite, calcium magnesium oxide, (CaMg(O) 2) How it's produced: By heating the mineral dolomite (CaMg(CO 3) 2). Uses: In steelmaking, both quicklime and calcined dolomite are used as a flux and slag conditioner and to prevent the steel from oxidising. This process also collects impurities that are damaging to the steel.

Jan 01, 1994· Dolomite, used in large tonnages because of its physical properties in the construction industry, also has a use in the chemical and the refractory industry. In its calcined form, dolomite is used as a slag addition in the making of steel, and it is used in a high-purity calcine to precipitate magnesium hydroxide from brines or seawater.