The characteristics of steel-slag as a supplementary cementitious material are also discussed. 3. Cement plants use various kinds of alternative fuels such as waste tyres, woodchips, plastic, oily rags and coke and make use of alternative raw materials, such as including various industrial wastes and spent catalysts. Table 4 shows the test results of another sample with less than 25% OPC clinker and greater than 30% steel-slag. India: GM Iron & Steel Company Limited has published plans for the construction of a 0.4Mt/yr slag cement grinding plant in Dhenkanal, Odisha. About 0% of these are Other Metals & Metal Products, 0% are Steel Scrap. Phenix Enterprise is emerged as a customer based solution oriented company with strong infrastructure, logistics, technical specialization and robust management efficiency. Slag cement, a byproduct of steel-making, enhances the traditional concrete benefits of strength and durability while offering reductions in waste, energy use and greenhouse gas emissions. This saves 70-85% of virgin natural resources and cuts GHG emissions by 70-85% (assuming a raw meal factor of 1.54 and clinker factor of 0.90). Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. Figure 1: Optical microscopic observations of steel slag. Given that about 5GJ of energy is needed to produce 1t of clinker, manufacturing 1t of such a cement consumes only about 0.75-1.5GJ of energy. United News of India has reported that the plant is part of an upcoming construction materials complex, including a 46MW captive power plant, that will cost … Low hydration … Test results demonstrated that the hydration rate of OPC-CS … Slag cement provides reduced heat of hydration and improved resistance to sulfate attack and alkali-silica reaction when compared to regular Portland cement. 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 strength even at late stages. Meanwhile, it only consumes about 0.2-0.5t of virgin raw materials against about 1.4t for 1t of OPC. Steel slag is currently used as aggregate in hot mix asphalt surface applications, but there is a need for some additional work to determine the feasibility of utilizing this industrial by-product more wisely as a replacement for both fine and coarse aggregates in a conventional concrete mixture. The medium particle size of ultrafine cement is 3-4 micrometers, with a maximum particle size of under 10 micrometers. It can be seen from Table 2 that olivine, merwinite, calcium aluminoferrite, calcium ferrite, calcium silicates, solid solution RO phase (e.g. Using SCMs avoids these GHG emissions and conserves natural resources. Songhe Industrial also cooperates with China Bank, SINOSURE to offer full service and to achieve diverse cooperation with customers all over the world. This article introduces a commercialised energy-saving cement made by co-grinding OPC clinker with steelmaking slag (steel-slag) and blastfurnace slag that represents a different approach to cutting greenhouse-gas (GHG) emission footprints and conserving virgin natural resources. Therefore steel-slag, especially highly-alkaline steel-slag, is referred to as low quality clinker. The present invention allows steel slag to be added to the kiln feed as a separate component at the feed-end of the rotary cement kiln in various particle sizes to a maximum of 2" in diameter. | Affiliate, Product Listing Policy Today, iron and steel slag is used in many fields where its unique characteristics can be put to effective use. Privacy Policy Portland blast furnace slag cement has the following characteristics. - The purpose of steel slag grinding products is to recycle the waste after making powder through the steel slag micro-powder vertical mill production line, which can be used to replace clinker for cement production, replace cement for concrete and produce steel slag … Ground-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water, to produce a granular product that is then dried and ground into a fine powder. As a reliable supplier, Songhe Industrial established long term relations with clients by its flexible payment scheme, competitive price and professional supporting service. Other properties and potential applications. 浙公网安备 33010002000092号 Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. Two slags were used to replace cement at a replacement ratio of 15% (CS15 and SS15) and 30% (CS30 and SS30), respectively, by binder weight. In addition, it contains iron oxides (FeO, Fe2O3), manganese oxide (MnO), magnesium oxide (MgO), alumina (Al2O3), and phosphorus penta oxide (P2O5) etc. d. Reflective light, 250X - Leaf-like RO-phase. It is recommended that steel-slag used in cement manufacturing should have an alkalinity greater than 1.8. Steel-slag is a by-product of the steelmaking process, which is formed when iron and/or scrap metals are melted together with fluxes such as lime and dolomite under oxidising conditions by injecting large amount of air or oxygen. - Plain light, 250X Large C3S crystal. The higher the alkalinity, the more the reactive minerals and the higher its activity and thus the better it is for cement manufacturing. Steel-slag is a very valuable, renewable resource that contains highly-reactive minerals such as calcium silicates and calcium aluminoferrite. 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%. It is a recovered industrial by-product of an iron blast furnace. Steel slag, the most commonly discharged metallurgical slag from the steel industry, contains CaO, SiO 2, and Fe 2 O 3 in percentages that allow its use as a raw material in the cement industry. Products. Chemically, steel-slag, BFS and OPC clinker all fall into the system of CaO-Al2O3-SiO2 (See Table 1). Alibaba.com offers 1,255 steel slag for cement products. 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Alipay Onetouch Focusing on Southeast Asia, Africa and South America market, Songhe Industrial plans to set up 12 overseas agencies for a better and faster response to customers. The steel slag is crushed and screened to provide steel slag … After 100 cycles, strength increased by 1.04% and weight lost was 0.12% based on concrete made with energy-saving steel-slag cement. Energy-saving steel-slag cement exhibits very satisfactory strength with further long-term strength development, good durability and very low hydration heat. Usually alkalinity (R = CaO/SiO2 or R= CaO/(SiO2+P2O5)) is used to characterise a steel-slag, which affects its mineralogical characteristics (Table 2). Chemically, steel-slag around 30-40 % and blastfurnace slag are already energy-consumed industrial byproducts and very low hydration heat weight. All rights reserved, powder, and application samples with their proportions, strengths and comparison. 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