Introduction. China is the world's largest steel producer, with the China Iron and Steel Association estimating that the country's crude steel production in 2022 will be 935 million tonnes [Citation 1].Steel slag mainly refers to the blast furnace slag and converter slag produced in the process of iron making and steel making, and with the …
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% ...
This study presents a proposed improved process of separating metallic iron from vanadium-bearing converter slag more efficiently.
SOLUTIONS TO THE CONVERTER SLAG RECYCLING PROBLEM IN METALLURGICAL PROCESSING N. B. Aitbaev,1 E. Kobegen,2 E. V. Skrazhevskaya,3 and B. M. Boranbaeva4 UDC: 669.046.56.004.86 ... the magnetic part from the converter slag fraction and metallic iron extraction was experimentally con-
During steel production, the impurities in the hot metal react with the fluxes forming the steel slag. Chemical constituents of this steel slag (SS) are relevant to iron/steelmaking or blended cement manufacture. Harmful impurities present in it, however, limit its recycling to these applications. Japan, Europe, and the US consume a significant …
Slag generated during steelmaking in basic oxygen converter (LD-Converter) is one of the important waste materials in an integrated steel plant. Generation rate of LD-slag is 150-
The original steel slag was individually and uniformly mixed with 0, 4, 6, 10, and 18 wt.% Al 2 O 3 (relative to the mass of the original steel slag) in a sequential manner. 50 g of the mixed slag was loaded into a magnesia crucible. In converter smelting, magnesia refractory materials are the preferred choice for lining the converter due to …
1. Introduction. Steel slag is a by-product of the steelmaking process. In fact, each ton of steel produces 110–150 kg of steel slag. China's steel slag reserves are more than 300 million tons, and the annual hoard continues to increase [1].Due to the different steel composition, scattered varieties of converter slag and complex composition exist, …
Many restrictions exist, however, on the utilization of steel slag. When steel slag is used internally, in steel plants, the most obvious problem is that of the enrichment of P and S (Drissen et al., 2009).The Bhilai Steel Plant in India was shut down because of its high S and P content (Das et al., 2007).The amounts of free lime and free MgO are …
Roasting of copper converter slag containing 4.03% copper, 1.98% nickel and 0.48% cobalt with ammonium sulphate open to atmosphere has been carried out in order to achieve sulphation of copper ...
technological operations of screen separation, fractionation, and magnetic separation of dump slag. At present, this line has reached an annual capacity of 800–900 thousand …
The iron/steel slag processing flow is schematically shown in Figure 2. There are 4 major process that steelmaking slag goes through. 1) Cooling and solidifying 2) Crushing and Magnetic separation 3) Crushing and classification for grain size 4) Aging treatment. Furthermore, each process will be explained in detail. Figure 2.
The process of "re-resourcing of converter slag" was put forward based on the analysis of the existing steel slag treatment process. The converter slag obtained from Jinan steel plant was studied. After grinding, the slag contained 3. 3% of iron particles, 54. 84% of magnetic part (wTFe = 20%), and 41. 84% of non-magnetic part, which could …
Studies have shown that the size of metal inclusions in the magnetic part of the slag depend on the fraction of the converter slag, resulting in a relationship with the …
To develop the slag crushing plant is the big achievement for Bhupindra Machine Pvt.Ltd. We have developed the 100 TPH fully automized slag crushing plant on key basis. Today BMPL have achieved the excellence and created a distinct identity for themselves in the business area. ... magnetic separators, vibrating equipments and other material ...
Carbon mineralization technology has emerged as a promising method for permanently sequestering CO 2 by transforming it into a thermodynamically stable solid carbonate material. Recently, alkaline industrial waste, particularly from steel and iron-making processes, has been identified as a proper feedstock due to its high potential for …
Steelmaking slags are usually processed for iron recovery by dry magnetic separation. The recovered iron-rich products are recycled back into the ironmaking and steelmaking processes to replace high-cost steel scrap and iron ores. However, current slag processing is far away from optimum conditions, especially for slag fines with small …
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% ...
magnetic separation treatment of the slag to recover the metal iron, ③ crushing and classification of the slag for grain size adjustment to manufacture the slag product, and …
To promote the resource utilization of steel slag and improve the production process of steel slag in steelmaking plants, this research studied the characteristics of three different processed steel slags from four steelmaking plants. The physical and mechanical characteristics and volume stability of steel slags were analyzed through density, water …
Copper is an important metal widely used in electrical, light industry, machinery, construction, national defense and other fields because of its excellent ductility, conductivity and thermal conductivity (Gbor et al., 2000; Guo et al., 2018b; Potysz et al., 2015).Iron ore is the supporting resource of China's iron and steel industry, which is a …
Magnetic separation is used for separating metallic iron and iron minerals from the slag using magnetic machines (cross-belt magnetic separator, drum …
The presence of magnetic inert minerals (RO phase, Fe 3 O 4, Fe) in steel slag powder 13 enables the separation of these minerals from the slag to enhance its gelling properties and facilitate iron resource recovery, thereby improving the activity of steel slag powder. 14 However, during wet magnetic separation operations, hydrated active …
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% ...
Granularity (100 mesh) was obtained by crushing particles of steel converter slag. Steel Converter Slag particles (5 g) are doped into suspended sludge and mechanically mixed in various volumes (0.2, 0.5, 1.0, and 2.0 L) of suspended sludge (mass ratio of steel slag to sludge carbon). After 30 min of stirring, the mixture was put into an …
These methods include crushing, sizing, magnetic separation ... to recover metallic iron from the converter slag, and yielded approximately 41.5% of iron in which the iron content was as high as ...
To extract metal inclusions, a sample of converter slag was crushed in a centrifugal impact crusher at an accelerator rotation speed of 70 m/s in a cycle with a roar . Crushed slag with a size of 0–5 mm was fed to magnetic separation in a weak magnetic field to obtain magnetic and non-magnetic products (Fig. 3).
Our plants utilize state-of-the-art magnetic separation equipment to maximize the recovery of metallics from the raw slag.The processing plants include the latest technology in crushing and screening plant design to cleanly separate the slag and metal into different sized fractions depending on customer specifications and market demand.
The possibility of hydrometallurgical processing of converter slag from nickel production aimed at integrated use of mineral raw materials and environmental protection is shown. The scheme of hydrometallurgical processing of slag using hydrochloric acid is proposed. The method involves leaching the slag with hydrochloric …
Grinding, sieving and magnetic separation were combined to recover metallic iron from the converter slag, and yielded approximately 41.5% of iron in which the iron content was as high as 85%, and ...