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.
expounds the application of steel slag in sintering and blast furnace production, steel slag ... The chemical composition of converter slag in some Chinese steel mills is shown in ... Steel slag is known as overburned Portland cement clinker . This is mainly because the steel slag
Aug 01, 2015 If the slag to steel mass ratio at the end of a converter blow varies within 0.08 to 0.1, the slag to steel volume ratio rises from almost zero in the beginning of the blow to 0.200.25 towards the end of the blow. In general, slag is considered to dampen metal ejections spitting and dust formation from the converter during the blow.
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. Natural...
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.
production of iron and steel slag in Europe in 2008 was of 45.6 million tonnes1 and ... and surface and clinker raw material. ... using the Linz-Donawitz LD converter comes from the pig iron refining process, wh ich converts molten pig iron and steel scraps into high quality steel. Most slags from steel pl ant derive from this pr ocess ...
Nov 14, 2018 Usage in hot metal dephosphorization Nippon Steel Corporation NSC has developed the MURC Multi-Refining Converter process, in which dephosphorization and decarbonization are conducted in the same converter. In this process, around 50 of decarbonization slag is retained in the converter after the decarbonization process and hot ...
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 G600 and cooling rate V5Kmin from 1623K to 1373K appeared significant stratification and the MFe gathered at the bottom of sample.
Oct 12, 2019 comparison of grinding characteristics of converter steel slag with .the grinding efficiency of steel slag was obviously increased and the particle characteristics . of circulating fluidized bed fly ash from coal gangue power plant.steel slag electro magnetic industriesit can be used for the production of slag bricks and wet grinding slag concrete . of kiln clinker grinding station, take ...
Nov 13, 2020 In general, the heavy-metal content of converter slags is not problematic, but there is concern about the chromium content of slags used for clinker production. The average is 460 ppm, with a maximum of 2000 ppm.
Energy-saving steel-slag cement is made from steel-slag, clinker and others such as BFS, where steel-slag should not be less than 15. Steel-slag cement has similar chemical, physical and mechanical properties to slag cement and OPC with the following advantages 1 high resistance to abrasion, chemical attack and freeze-thaw cycles 2 low hydration heat and 3 continuous growth of
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.
a promising way to increase the reactivity of converter slag and enable recycling as a cement replacement and this is the first in-depth characterization of air granulated steel slag. In this study converter slag was separated into different fractions 0.25-0.5 mm, 0.5-1 mm, 1-2 mm, 2-4 mm after air granulation to study the influence of
Chemical Compositions of Converter Steel Slag of Some Steel Plants in Chinawt Table 2. Relationship Between Alkalinity and Activity Remarks a. Alkalinity CaOSiO 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 2kg Remark Alkalinity CaOSiO 2 P
Converter slag is the waste residue generated in the steelmaking process, mainly formed by the addition of slag forming constituent, the erosion of the furnace lining, and the oxidization of silicon, manganese and other materials in the molten iron.1,2 The annual output of converter slag is approximately 10.514 of the crude steel production
adding an amount of crushed and screened steel slag to said stream of feedstock material at said feed-end of the kiln, such that as the stream of feedstock material and steel slag moves toward said heat-end, the steel slag is melted by said heat and diffused into the feedstock material to form cement clinkers.
LD slag is a byproduct of steel industry, which comes from pig iron rening processing using LD converters. Because of its physical, chemical and mineralogical properties, it can be used as a substitute for aggregates in civil engineering projects. LD slag has the useful components like CaO, MgO with high basicities CaOSiO2 of above 3.0. LD slag
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., ores, cinders or the like and lime to a ferrite-containing slag and to reduce the formed ferrite slag in a reduction reactor, such as, e.g., an iron bath reactor, whereupon the sinter phase is discharged as a clinker.
Application of steel making slag and converter greenhouse experiment, all treatments resulted in sludge in farm manure enrichment for corn nutrition in significantly increased production relative to the control, the greenhouse conditions. largest 26 times by RG CBS. The PG CBS and RG Melali, A. R. and Shariatmadari, H.
In general, 110-140 kg of converter slag is produced for every ton of crude steel production. Although the converter slag is used as a roadbed material, recycling applications are limited in comparison with blast furnace slag cement. The advantage of the new application technique of using converter slag is that it improves the ironworks ...
More than one hundred million tons of steelmaking slag is produced annually in China. Bad grindability inhibits efficiency of using steelmaking slag which resulted a great waste. In view of this situation, various methods were carried out to improve the grindability so that to reduce the amount of waste and recycle the materials. Experiments were executed to compare the self-pulverization rate ...
When slag appears, the converter is rotated all the way back, and the slag is poured over the converter mouth into a slag pot. For better separation of slag from liquid steel, special taphole-closing devices such as refractory balls or nitrogen jets, as well as slag-detection devices, are often used.
Steelmaking slag consists of converter slag that is generated by converter and electric arc furnace slag that is generated during the electric arc furnace steelmaking process that
May 07, 2018 In this case, slag constitutes a good raw material for cement production and also contributes with Fe addition to the clinker. A great part of the steel produced in the world is obtained through electric arc furnace EAF, the process involves the use of