The aim of the present research work is to investigate the possibility of adding steel slag, a by-product of the conversion of iron to steel process, in the raw meal for the production of Portland...
The aim of the present research work is to investigate the possibility of adding steel slag, a by-product of the conversion of iron to steel process, in the raw meal for the production of Portland cement clinker. Two samples of raw meals were prepared, one with ordinary raw materials, as a reference sample ((PC)
Jul 10, 2017 Converter steel slag is a vast amount of solid waste generated in the steelmaking process that has very low utilization rate in China and is usually deposited as waste. This paper investigates the physical and chemical characteristics of converter steel slag, as well as its comprehensive utilization of internal and external recycle.
Apr 01, 2008 The aim of the present research work is to investigate the possibility of adding steel slag, a by-product of the conversion of iron to steel process, in the raw meal for the production of Portland cement clinker.
Sep 01, 1999 The clinker is cooled, crushed, mixed with 3% gypsum, Converter slag of steel. Almost the same amount of converter slag (production of about 600,000 tons per year and more than 10 million tons in stock ) exists in the mill and is increased daily. Being high in iron oxide
Apr 04, 2012 D. Sichen, in Fundamentals of Metallurgy, 2005 9.5.1 Slag–metal mixing. In steelmaking, slag–metal mixing is a very common phenomenon and it occurs due to the shear at the slag–metal interface caused by excessive liquid steel flow. 37 This mixing leads to emulsification of steel in slag, which increases the total interfacial area and consequently the rate of slag–metal reactions.
The aim of the present research work is to investigate the possibility of adding steel slag, a by-product of the conversion of iron to steel process, in the raw meal for the production of Portland cement clinker. Two samples of raw meals were prepared, one with ordinary raw materials, as a reference sample ((PC)
Benefits of using steel slag in cement clinker production . Feb 01, 2021 We also expect that when the steel slag substitution increases from 43.04 to 202.26 kgt, the increased revenue on clinker production will increase from 0.49 to 2.37 MUSDa for a 2500 td cement plant, indicating that a 1 increase in incorporated steel slag can ensure a 7.82 increase in corporate earnings.
Sep 01, 1999 The clinker is cooled, crushed, mixed with 3% gypsum, Converter slag of steel. Almost the same amount of converter slag (production of about 600,000 tons per year and more than 10 million tons in stock ) exists in the mill and is increased daily. Being high in iron oxide
To produce pig iron or steel and cement clinker from slags it has been proposed to react iron-oxide containing liquid slags, such as, e.g., steelworks slag, with iron oxide carriers, such as, e.g.,...
A main component of cement is cement clinker, which is produced from a mixture of raw materials containing calcium oxide, silicon dioxide, aluminium oxide and iron oxide by means of mixing, grinding and burning. According to the invention, the mixture of raw materials consists of a calcareous component and converter slag, the converter slag being added in a proportion of up to 30% by weight.
Rather, both the slag-producing steel industry and the slag-using building materials industries, such as the cement industry, both in Europe and in many countries outside Europe, invested many decades of effort in establishing a technically high-quality and ecologically acceptable use for these slags.
2.2. Converter slag of steel Almost the same amount of converter slag (production of about 600,000 tons per year and more than 10 million tons in stock ) exists in the mill and is increased daily. Being high in iron oxide (Fe 2 O 3, Fe 3 O 4) and metallic Fe particles, this slag has not been used in the cement industry, although Table 1
In this work we study the possibility of utilizing steel converter slag, a byproduct of steel manufacturing, for production of pure calcium carbonate. The dissolution of calcium from steel converter slag by using acetic acid as a solvent and the precipitation of pure calcium carbonate from the resulting solution were experimentally investigated.
Abstract. A new approach to enrich MFe and RO phase from the converter slag by super gravity was investigated. The samples obtained by the gravity coefficient G=600 and cooling rate V=5K/min from 1623K to 1373K appeared significant stratification and the MFe gathered at the bottom of sample.
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.
Slag generated from basic oxygen converter (LD-slag) is one of the recyclable wastes in integrated steel plants. This paper deals with the present use and possible use of LD-slag. The suitability of its use in roadmaking. metallurgical purposes and fertilizer production has been discussed.
Eloneva S, Teir S, Salminen J, Fogelholm CJ, Zevenhoven R (2008) Steel converter slag as a. raw material for precipitation of pure calcium carbonate. Portland cement clinker production.
Jul 01, 2011 Steel-slag can be used to produce energy-saving cement by co-grinding with OPC clinker and blastfurnace slag. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. 3.
Chemical Compositions of Converter Steel Slag of Some Steel Plants in China(wt%) Table 2. Relationship Between Alkalinity and Activity Remarks: a. Alkalinity = CaO/(SiO 2 +P 2 O 5) b. Mortar — 35% steel slag powder, 40% blast furnace slag, 20% Portland cement clinker, 5% gypsum c. Specific surface area of steel slag 420m 2/kg Remark
A raw material mixture (I) for the production of a cement clinker comprises a lime component and converter slag and/or electric steelworks slag.
Chemical Compositions of Converter Steel Slag of Some Steel Plants in China(wt%) Table 2.Relationship Between Alkalinity and Activity Remarks: a. Alkalinity = CaO/(SiO 2 +P 2 O 5) b. Mortar — 35% steel slag powder, 40% blast furnace slag, 20% Portland cement clinker, 5% gypsum c. Specific surface area of steel slag 420m2/kg Remark
Abstract: The purpose of this study was to investigate the reuse of desulfurization slag in cement clinker production and its influence on the formation of clinker phases. The desulfurization slag that mainly contained Ca and Si was identified as non-toxic, and thus it should be suitable to be reused in clinker production.
Jul 01, 2011 Steel-slag can be used to produce energy-saving cement by co-grinding with OPC clinker and blastfurnace slag. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. 3.
In this work we study the possibility of utilizing steel converter slag, a byproduct of steel manufacturing, for production of pure calcium carbonate. The dissolution of calcium from steel converter slag by using acetic acid as a solvent and the precipitation of pure calcium carbonate from the resulting solution were experimentally investigated.
16/4/2015 4th Slag valorization symposium Leuven 7 Low CO2 values for GBFS should lead to an obligation to use GBFS over clinker for the cement user but also to a decrease of production for the steel maker since the steel footprint is too high => SSAB becomes EU champion
2.2. Converter slag of steel Almost the same amount of converter slag (production of about 600,000 tons per year and more than 10 million tons in stock ) exists in the mill and is increased daily. Being high in iron oxide (Fe 2 O 3, Fe 3 O 4) and metallic Fe particles, this slag has not been used in the cement industry, although Table 1
Abstract. A new approach to enrich MFe and RO phase from the converter slag by super gravity was investigated. The samples obtained by the gravity coefficient G=600 and cooling rate V=5K/min from 1623K to 1373K appeared significant stratification and the MFe gathered at the bottom of sample.
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.
Steelmaking is the process of producing steel from iron ore and/or scrap.In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (the most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel.
Slag generated from basic oxygen converter (LD-slag) is one of the recyclable wastes in integrated steel plants. This paper deals with the present use and possible use of LD-slag. The suitability of its use in roadmaking. metallurgical purposes and fertilizer production has been discussed.
Since the early 1950s, SMS group and its predecessor companies have been using their know-how for highly productive and modern converter steelplants for carbon and stainless steel worldwide. SMS group is one of the leading companies in this market and meets the growing demands of its customers with advanced and reliable mechatronic systems.
Slag generated from basic oxygen converter (LD-slag) is one of the recyclable wastes in integrated steel plants. This paper deals with the present use and possible use of LD-slag. The suitability...
A process for forming cement clinker using mill scale that may have hydrocarbons associated therewith. Normal feedstock material is preheated and then transferred to a combustion area. The mill scale is also transferred to the combustion area where, during the process of burning a material, the unwanted hydrocarbons are volatilized and converted to harmless gaseous products (by combustion
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