اتصل

هاتف

+0086-371-86162511

عنوان

تشنغتشو ، الصين

البريد الإلكتروني

[email protected]

iron making from magnetic slag

Enhancement of Iron Recovery from Steelmaking

Steelmaking slags are usually processed for iron recovery by dry magnetic separation. The recovered iron-rich products are To improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facilities, a new method was proposed by adding a secondary screen Optimization of magnetic separation process for iron

احصل على السعر

Recovery of iron from copper slag via modified roasting in

The optimum conditions for recovering iron by oxidizing roasting and magnetic separation are as follows: calcium oxide content of 25 wt.%, mixed gas flow In slag pit the bulk metal undergoes cooling and solidification and gets intimately mixed mechanically and chemically with the slag. Hence the magnetic and non Measurement of metallic iron in steel making slags

احصل على السعر

Crystallization and Beneficiation of Magnetite for

The iron resources in nickel slag were recycled by oxidation and magnetic separation. The effects of holding time, temperature, air flow rate and basicity on the crystallization of magnetite were The magnetic separation method is used for separating metallic iron and iron minerals from steel slag. Commonly used magnetic machines are the cross-belt Application of magnetic separation to steelmaking slags

احصل على السعر

Optimization of Iron Recovery from BOF Slag by

The most suitable magnetic field intensity is 75 mT, the magnetic material yield is 46.00%, the iron grade is 29.10%, and the iron recovery is 64.12%. Compared with the initial steel slag, the iron grade From Figure 1, one can also see that in the temperature range 873 K (600 °C) to 1473 K (1200 °C), O 2 could oxidize not only CaS, MgS and FeS, but also Treatment of Hot Metal Desulfurization Slag With CO

احصل على السعر

IOXFWXDWHG PDJQHWLFILHOG IOPscience

result of separation test with steelmaking slag, the iron content of magnetic side and the overall separation efficiency is higher in proposal method than in The collected slag sample contains about 34.1% iron (48.5% Fe2O3) and 3.5% chromium, whilst the vanadium contents is around 1500 ppm. The Mössbauer spectroscopy suggested that the non Materials Free Full-Text New EAF Slag

احصل على السعر

Modification of industrial BOF slag: Formation of MgFe

After the modification and magnetic separation, the total Fe content increased by 15.80%, from 21.20% in the industrial BOF slag to 37.00% in the magnetic slag. This is better than the direct magnetic separation of iron oxide without any treatment. The magnetic slag could be reused as either a sintering or slag splashing material.The steelmaking slags are referred to by the steel production techniques used, such as BOF, EAF, and ladle furnace etc. These steel making slags typically contain 20–25% iron (Kawatra and Ripke, 2002).Because the chemical composition of steel slags is highly variable, the mineral composition of steel slag also varies.Application of magnetic separation to steelmaking slags

احصل على السعر

Optimization of Iron Recovery from BOF Slag by Oxidation and Magnetic

The most suitable magnetic field intensity is 75 mT, the magnetic material yield is 46.00%, the iron grade is 29.10%, and the iron recovery is 64.12%. Compared with the initial steel slag, theIt was shown that 33.34% of the wastes can be recycled with 54.90% iron recovery and 74.43% sulphur removal after dry magnetic separation experiments while 14.66% of the wastes can be recycledRecovery of high grade iron compounds from LD slag by enhanced magnetic

احصل على السعر

New EAF Slag Characterization Methodology for Strategic

The collected slag sample contains about 34.1% iron (48.5% Fe 2 O 3) and 3.5% chromium, whilst the vanadium contents is around 1500 ppm. The Mössbauer spectroscopy suggested that the non-magnetic fraction represents 42 wt% of the slag, while the remainder (58 wt%) is composed of magnetic components.Slag is the by-product of iron- and steelmaking processes. Normally, around half to one tonne of slag would be generated for yielding one tonne of rolled iron or steel (Lobato et al. 2015).It was reported that the world steel production was 1.9 billion tonnes in 2016, which suggested that at least around 1 billion tonnes of slag is produced The potential utilization of slag generated from iron- and

احصل على السعر

Optimization of Iron Recovery from BOF Slag by Oxidation and Magnetic

The most suitable magnetic field intensity is 75 mT, the magnetic material yield is 46.00%, the iron grade is 29.10%, and the iron recovery is 64.12%. Compared with the initial steel slag, the iron grade increased by 8.22%, and the iron recovery increased by 46.38% compared with the direct magnetic separation without oxidation.After BOF slag was oxidized at 1300 ℃ for 240 min and cooled in the furnace (1 ℃/min), the grade of magnetic slag obtained by magnetic separation had a grade of 40.26%, a recovery of 70.95%Enrichment of Fe-Containing Phases and Recovery of Iron

احصل على السعر

Synergetic modification of industrial basic oxygen furnace slag

When an appropriate amount of copper slag was added to make the basicity of the mixed slag be 2, the conversion rate of MgFe 2 O 4, iron recovery rate and grade of magnetic slag were the best. In the oxidative modification process, increasing the oxidation temperature was beneficial to the formation and development of MgFe 2 O 4 .On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron (>40 wt. %) and copper (1 to 2 wt. %). On the other hand, solar energy, when Recovery of Copper and Magnetite from Copper

احصل على السعر

Improving Beneficiation of Copper and Iron from

The roasting-magnetic separation process is the route to convert the metals into a desired phase, which can be easily separated from the slag through mixing copper slag with calcium oxide as fluxes and At the same time, the silicon existing in the copper smelting slag in the form of iron fayalite was transformed into amorphous SiO 2. Economic Evaluation of the Process Proposed. For making a preliminary economic valuation on the process proposed in the present work, the input and output for treating one ton of the copper smelting slag A Study on the Selective Leaching of Valuable Metals and

احصل على السعر

Enrichment Characteristics of Cr in Chromium Slag after Pre

After the reduction treatment, the metallic iron can be separated from the chromium slag by the melting separation method or magnetic separation method because of the magnetic difference between the metal and slag [19,20,21,22]. According to extensive experimental research and productive practices, the higher the ratio of chromium to iron In this study, a method for upgrading iron from the waste copper slag discharged as an industrial waste has been developed. The process first crushes the waste copper slag between 150 and 203 μm, followed by reduction reaction at 1250 °C for 1.5 h. And then, the resulting material is again crushed to 75–104 μm, followed by dry magneticA physico-chemical separation process for upgrading iron

احصل على السعر

Quantitative Determination of Metallic Iron Content in

containing iron in blast furnace slag [5]. This method applies a magnet to collect the metallic iron particles. Obviously, this method only provides the approximate result, due to the metallic particles often being imbedded in non-metallic particles for the iron-making or steel-making slags. Another method uses mercuric chloride to extract Large volumes of slags are formed as by-products during the refinement of pig iron by basic oxygen steelmaking or electric arc furnace steelmaking. In order to lower the environmental impact of the steel industry and ensure its economic sustainability, there have been significant studies finding the ways to recycle by-products. The formation, The recycling and reuse of steelmaking slags — A review

احصل على السعر

Recycling of ironmaking and steelmaking slags in Japan and

The mass production of steel is inevitably accompanied by large quantities of slags. The treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel industry. Japan and China are two major steel producing countries that have placed a large emphasis on developing new technologies The BOS slag was considered a waste in old times but now as a secondary resource because it contains a large amount of thermal energy (temperature up to 1700 °C), chemical energy (metallic and low-valence metallic oxides), and valuable materials (e.g., iron oxides). The behavior of BOS slag inside the BOS vessel, e.g., Basic Oxygen Steelmaking Slag: Formation, Reaction, and

احصل على السعر

The recycling and reuse of steelmaking slags — A review

The way that the slag has been cooled can have an influence on the amount of metallic iron that can be recovered from the slag (Wang et al., 2012). The magnetic separation process and the crushing process are often repeated several times to increase the amount and quality of metallic iron that can be recovered from the process (Horii et

احصل على السعر

<< Previous:20 طن لكل ساعة كسارة الفك
>> Next:الدافع في صناعات التعدين

حقوق النشر © 2004-2020 بواسطة China Liming Heavy Industry Science and Technology Co.Ltd. جميع الحقوق محفوظة