In the engineering smelting flue gas, the concentration of SO 2 is about 2000 ~ 3000 mg·m −3, the temperature of flue gas is about 90 ℃, and the solid–liquid ratio of carbide slag slurry is 1:10. Four-stage desulfurization process is adopted in the project. Carbide slag slurry is used to remove SO 2. Desulfurized gypsum is sent to the ...Web
ادامه مطلب
The invention discloses an ultralow carbon steel refining deep-desulfurizer and making method, which comprises the following parts: 60%-69% CaO, 11%-20% Al, 5%-10% MgO, 5%-10% SiO2, 1%-5% Al2O3, 0.5%-1.2% Fe2O3, 1%-3% CaF2, 1%-3% B2O3, 1%-3% BaO and impurity. The making technique comprises the following steps: blending; grinding the …Web
ادامه مطلب
Bearing steel smelting Electric furnace process, that is, electric furnace - refining outside the furnace - continuous casting or die casting - rolling; Converter process, ie blast furnace - hot ...Web
ادامه مطلب
The present invention discloses multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting, which is characterized in that reducer-quartz sand, barium ores, lime and carbon are mixed proportionally, and then the mixture is added into a graphite crucible arranged in a medium frequency induction furnace lined with a magnesium lining for …Web
ادامه مطلب
Sulfur dioxide, which comes from the flue gas emitted by the steel and coal power industries, is extremely harmful to humans and the natural environment. Due to its high efficiency and economy, dry fixed-bed desulfurization technology and Ca-based adsorbents have attracted wide attention. In this paper, a detailed outline of the process …Web
ادامه مطلب
The reaction between steel and slag during desulfurization has been simulated by using Factsage software to study the influence of component on the sulfur distribution …Web
ادامه مطلب
Introduction. In the industrial production of China, the processing of phosphate rock, volcanic eruptions, kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2.SO 2 is a highly irritating gas. Because SO 2 is freely soluble in water and enters the respiratory tract, it can generate …Web
ادامه مطلب
process by collaborating with injection equipment designers and suppliers. Almamet delivers high-quality injection lances for steel production that are designed for the smooth injection of solids and gases into the iron melt, to improve process efficiency. According to Almamet, when producing high-quality structural steel, magnesium reagent isWeb
ادامه مطلب
The sintering process is an important part of iron and steel production (Cheng et al., 2016). ... The process of smelting and purifying the catalyst precursor salt from minerals is extremely complex, which directly leads to high catalyst costs and serious secondary pollution. ... A novel Mn/Ce-Ca-based desulfurizer was prepared by dipping ...Web
ادامه مطلب
By adopting the superfine powder desulfurizer and the smelting process, the unit consumption of the desulfurizer can be controlled to be 4.5-6.5Kg/t, and molten iron with the S content of less than or equal to 0.001 percent by weight is obtained. ... Method for reducing phosphorus content in low-phosphorus steel production tapping process of ...Web
ادامه مطلب
Steel mill by-products such as desulfurization slags are often used in low value applications or discarded. These by-products can have a similar composition to a high …Web
ادامه مطلب
Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive.Web
ادامه مطلب
Abstract and Figures. The main source of Mn in raw materials for SiMn production is Mn-ore and Mn-rich slag from the high carbon FeMn production. The amount of slag per tonne of SiMn metal is ...Web
ادامه مطلب
Reduction smelting is one of the methods to recover copper from copper smelting slag [1,2]. Compared with flotation, the reduction smelting method can directly treat molten copper slag and has better adaptability for raw materials [3–5]. At present, this recovery process is mainly used to add reducing agents such as pyrite (sulphide) and ...Web
ادامه مطلب
Making steel. At Scunthorpe, we use the Basic Oxygen Steelmaking (BOS) process – our modern convertors (or vessels) take a combined charge of scrap and liquid iron of up to 330 tonnes and convert this into steel in just 25 minutes. When the liquid iron arrives at the BOS Plant, it's poured from the torpedoes into refractory-lined charging ...Web
ادامه مطلب
A crude Fe-Ni-Cu alloy with 2.5% Ni, 1.1% Cu, and 87.9% Fe was produced, which can replace part of scrap steel, electrolytic copper, and nickel as the burden in the production of weathering steel ...Web
ادامه مطلب
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one …Web
ادامه مطلب
2.1. Materials. The Cu–Fe alloy and slag used in this experiment were obtained via the reduction of copper slag, and their chemical compositions are shown in Table 1.The SEM micrograph and EDS results of the Cu–Fe alloy used in the experiment are shown in Figure 1 [21,22].From the electron microscope, it can be seen that the main matrix of the metal …Web
ادامه مطلب
The carbide slag (generated from a PVC factory) and limestone (used in a coal-fired power plant) were used as two kinds of desulfurizer, whose compositions are shown in Table 1.It illustrates that calcium resources are abundant in carbide slag, which also contains a small number of impurities such as SiO 2 and Al 2 O 3.The main …Web
ادامه مطلب
1. Introduction. In the industrial production of China, the processing of phosphate rock, volcanic eruptions, kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2.SO 2 is a highly irritating gas. Because SO 2 is freely soluble in water and enters the respiratory tract, it can generate …Web
ادامه مطلب
Industrial trials showed that the main composition range of final slag in LF process is wCaO = 53.0%–57.0%, wAl2O3 = 23.4%–25.1%, wSiO2 = 8.1% – 10.0%, …Web
ادامه مطلب
Manganese processing - Alloy, Extraction, Smelting: More than 90 percent of the manganese produced goes into metallurgical applications, the pure metal being used in copper and aluminum alloys and ferromanganese and silicomanganese employed in steel and cast iron. Most manganese is consumed as high-carbon ferromanganese for …Web
ادامه مطلب
The invention relates to a method for controlling the input amount of a desulfurizer in a molten iron desulphurization process, which constructs a nonlinear relation between desulphurization reaction efficiency and molten iron [ S ] content in all desulphurization sections, quantificationally calculates the influence of molten iron temperature on the …Web
ادامه مطلب
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one hazardous waste (waste cathode carbon) was used to treat another (copper slags). The waste cathode carbon is used not only as a reducing agent but also as a fluxing agent to …Web
ادامه مطلب
The COREX process is a two-stage direct smelting process, consisting of (1) a melter-gasifier, which melts the DRI and gasifies the coal (Zhou et al. 2018), and (2) a DRI shaft furnace mounted above melter-gasifier (You et al. 2018), which reduces lump ore or pellets to DRI by reducing gas from the melter-gasifier (Fig. 7.5).Web
ادامه مطلب
Thus, it is very necessary to analyze the desulphurization kinetics of the injection method. 2. Desulfurizer selection For deep desulphurization in hot metal and to meet the requirement of sulphur content for steelmaking, the desulfurizers, which are suitable to hot metal conditions, steelmaking process, and the desulphurization target, …Web
ادامه مطلب
Typical bearing steel production process. Sweden SKF: 100t EF-ASEA-SKF-IC, producing Ø12-32mm rod wire, outer diameter 90-200mm and outer diameter 55-110mm steel pipe; ... Arc furnace process ...Web
ادامه مطلب
The invention discloses an ultralow carbon steel refining deep-desulfurizer and making method, which comprises the following parts: 60%-69% CaO, 11%-20% Al, 5%-10% MgO, 5%-10% SiO2, 1%-5% Al2O3, 0.5%-1.2% Fe2O3, 1%-3% CaF2, 1%-3% B2O3, 1%-3% BaO and impurity. The making technique comprises the following steps: blending; grinding the …Web
ادامه مطلب
Semantic Scholar extracted view of "Experimental Study on Deep Desulfurizer in LF Process" by Long Wu et al. Skip to search form Skip to main content Skip to account …Web
ادامه مطلب
The invention relates to a formula for a complex liquid steel (iron) desulfurizer and a manufacturing method. The liquid steel (iron) desulfurizer is added if sulphur content is required to be lowered in iron and steel smelting. The formula in the invention comprises the following components: 80-85% of passivated active lime powder, 7-10% of fluorite …Web
ادامه مطلب
Wet flue gas desulfurization was simulated to improve gypsum production using low-grade limestone. High-grade limestone with 94 wt% CaCO3 content is used for producing gypsum with 93 wt% purity, but owing to the resource depletion of high-grade limestone, low-grade limestone should be replaced as an alternative. However, low …Web
ادامه مطلب
Semantic Scholar extracted view of "Experimental Study on Deep Desulfurizer in LF Process" by Long Wu et al. Skip to search form Skip to main content Skip to account menu ..., journal={Journal of Iron and Steel Research International}, year={2012}, volume={19}, pages={17-21} } Long Wu, F. Pei, +1 author Shi-qi Li; Published 1 April 2012; ...Web
ادامه مطلب
The invention relates to a method for controlling the input amount of a desulfurizer in a molten iron desulphurization process, which constructs a nonlinear relation between desulphurization reaction efficiency and molten iron [ S ] content in all desulphurization sections, quantificationally calculates the influence of molten iron temperature on the …Web
ادامه مطلب
greatest n egative impact on ferronickel properties, when is used for the production of steel, and its removal proceed slowly and is fo llowed by high energy c osts. 3.Web
ادامه مطلب
As seen from the test results shown in Table 3.5, the fluorine in magnesium slag that is generated via the Pidgeon process seriously exceeds the standard limit.Thus, the slag cannot be landfilled directly because it will cause serious consequences. Similarly, with reference to HJ/T299-2007 "Solid waste-Extraction procedure for Leaching Toxicity …Web
ادامه مطلب
The Ruhrstahl–Heraeus (RH) refining process is widely used in the manufacture of low sulfur steel due to its high efficiency in desulfurization, deoxidation, …Web
ادامه مطلب
1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast-furnace-based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car, 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view, the fundamental …Web
ادامه مطلب
(BOF) smelting, and ladle furnace (LF) refining are three key processes controlling the production of ul tra-Iow sulfur steel[4]. LF furnace, with a better temperature control, can provide a good thermal condition for desulfurization, which is often used as a necessary process of deep desulfurization[S-6].Web
ادامه مطلب