The presented work offers an innovative process scheme for valorizing Pb-Zn slag, which involves crushing, grinding, and separation techniques to concentrate valuable components (non-ferrous metals). ... Gravity concentration ( 13 shaking table) and magnetic separation (Davis separator and disk separator) were used to obtain the final ...
The magnetic separation of steel slag should be a multi-stage wet weak magnetic separation, and the optimal magnetic intensity is 100 mT. The steel slag …
To provide a magnetic separation method of steel-making slag capable of heightening Fe concentration in recovery, in a magnetic separation method for recovering a ferrous compound and metallic iron by magnetic separation from slurry steel-making slag.SOLUTION: A magnetic separation method of steel-making slag includes steps …
Steel slag can separate inert minerals by the mineral separation method and prevent the hydration of active minerals caused by wet magnetic separation. In order …
A schematic flowchart of general steelmaking slag treatment procedures is illustrated in Fig. 1. As metallic iron and iron minerals are normally heavily contained in the steelmaking slags, it is necessary to conduct magnetic separation for a more efficient reclamation of some iron-rich resources (Alanyalı et al., 2006).
Usually, the wet magnetic separation method is used to separate the metallic iron particles from the slag powder [4]. The magnetic process, in principle, separates the magnetic …
The rise of NaFe 2 O 3 could potentially compromise iron recovery within the slag, given that the magnetic separation method is among the most widely used methods for such recovery . Fig. 5. XRD patterns of quenched slags at 1600 °C with different Na 2 O content (2, 2.5, 5 and 7.5 wt%)
A treatment method and steel slag technology, which is applied in the field of comprehensive utilization of solid waste resources in the metallurgical industry, can solve the problems of restricting the use of steel slag tailings, the loss of iron resources in slag, and the high consumption of grinding bodies, so as to increase the added value of …
Iron grain growth during deep reduction roasting is important for iron enrichment from copper slag (CS) through magnetic separation. In this work, a novel method of additive-free activation roasting, including oxidation and subsequent reduction roasting, was proposed to increase the iron grain size, then the iron was extracted by …
Assessing a given product's design and its recyclability using mass flow analysis based on the material separation and recovery rates of individual recycling processes under realistic conditions can support design decisions promoting better recyclability. EN 45555 defines the calculation of the technical recyclability of electrical …
An external circulation, steel slag technology, applied in the field of steel slag grinding, can solve the problems of restricting the efficient utilization of steel slag resources, high energy consumption of steel slag vertical grinding and grinding, serious wear life of grinding rollers, etc. Improved and reduced grinding energy consumption
Slag processing. George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 5.4.2.12 Self-dissolving. In this method, hot steel slag is put into a sealed pressure tank, holding approximately 100 kg (220 lb) of steel slag (it can be a smaller or larger amount depending on the trial scale) (SRIM, 1982).Molten steel …
Magnetic separation has wide-ranging applications in both mineral processing and recycling industries. Nevertheless, its conventional utilization often overlooks the interplay between mineral and particle …
A magnetic separation device and high-gradient technology, which is applied in the field of gasification fine slag wet high-gradient magnetic separation for ash reduction and gasification fine slag carbon ash separation, can solve differences, unsatisfactory flotation effect, and low ignition loss of high ash products To meet the …
2. 2Slide A. Trigger • Ferro alloy plant produces 50,000 MT/year of high carbon ferro chrome • Separation of slag and metal not perfect • Slag contains (1% - 3%) entrapped metal (ferrochrome). • …
Notes: 1. Services (Installation, Test Run, Training): The supplier can provide basic drawings and schematic drawings of equipment installation. The domestic technicians will be provided for free to guide installation and debugging, and the buyer will provide technicians with room and board. The buyer shall prepare necessary auxiliary …
A process and technology of steel slag, which is applied in the field of optimization of magnetic separation processing steel slag, can solve the problems of polluting the environment, difficulty in recycling blast furnaces, and large grain steel, so as to improve the utilization rate, improve the comprehensive utilization rate, and reduce environmental …
The results show that gravity separation and flotation have no obvious separation effect on iron minerals in nickel metallurgical slag, and magnetic separation has a certain separation effect. At present, the accumulated industrial waste products have been subjected to strict control, and there is an urgent need to recycle metallurgical slag.
After reduction at 1280 °C for 35 min, they subjected the material to magnetic separation, resulting in iron concentrate with an iron grade of 90.35%. The iron recovery rate was 89.70%, and the copper content in the iron concentrate was 0.35 wt% . The typical copper slag reduction-magnetic separation process flowchart is shown in Fig. 2. From ...
M-Fe particles in slag C had a size between 1 mm to 5 mm. T his profound difference implies that more attention should be focused on the size distribution of M-Fe in different …
The separation between slag and metal is not perfect and the granulated slag contains ~1% to 3% of entrapped ferrochrome. ... and metal particles can be recovered by gravity as well as magnetic ...
A technology for slag steel and magnetic separation, applied in the field of metallurgy, can solve problems such as the decline of magnetic separation efficiency and the appearance of magnetic spikes ... figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter ...
Flow chart of steel slag processing plant 1. Steel Slag Crushing After the initial crushing by a jaw crusher, the steel slag is reduced to a size smaller than 60 mm. ... In addition to magnetic separation, utilizing shaking tables for gravity separation of steel slag can also achieve high recovery rates of iron concentrates. 4. Particle ...
To separate the slag and enrich the iron after reduction, the laboratory-scale device of magnetic separation was designed and made. The process of slag re-resourcing, which included magnetic sorting, precise reduction, magnetic separation, and removal of free calcium oxide (f-CaO), was proposed to obtain iron-rich magnetic materials and cement ...
During copper smelting, 2–3 tons of copper slag was generated from every ton of refined copper under normal operation. At present, almost half billion tons of copper slag have been piled up in China's tailings ponds [5]. ... Based on magnetic differences, researchers usually used magnetic separation method to separate magnetite and …
The results indicated that the high‑nickel concentrates produced from direct reduction-magnetic separation process, which were combined with optimization of slag types can not only increase the grade of furnace burdens and decrease quantity of slag, but also improve the fluidity of slag and smelting efficiency as well as reduce the power ...
The magnetic separation method is used for separating metallic iron and iron minerals from steel slag. Commonly used magnetic machines are the cross-belt magnetic separator, drum magnetic separator and magnetic pulley separator. No one system or type of magnet can be used for all ferrous waste recovery.
Multi-stage wet weak magnetic separation of treatment slag resulted in the highest concentrate yield of 49.05 % at an basicity of 1, with a T.Fe content of 56.711 %, and 70.32 % of the iron component entering the concentrate. The concentrate can be returned to the steelmaking process instead of the charge, and the tailings can be used …
The results of the initial test work identified magnetic separation and jigging as potential methods for recovering this metal from crushed slag. The metal was crushed to coarse sizes (<75 mm) at which metal concentrate grades of about 93% could be obtained from magnetic separation and hand-sorting to remove unliberated metal.
The flow chart is shown in Fig. 5. First, the rare earth, lithium and iron in the slag were separated by magnetic separation. Then, concentrated sulfuric acid was used to reconstruct the rare earth and lithium phases in the non-magnetic components at 633 K, transforming them into sulfate. The formulae are shown in Table 3. Meanwhile, HF, …
حقوق النشر © 2024.Artom كل الحقوق محفوظة.خريطة الموقع