The RKEF process can use saprolitic laterite ore as raw material with the alumina content of 2–5 wt%. The alumina also moves toward the slag during smelting. According to the mass ratio of ferronickel to slag of 0.2–0.25, the corresponding. MgO/(MgO+SiO. 2) (g/g) 0 0.2 0.4 0.6 0.8 1 500 1000 1500 2000 2500 3000 MgSiO. 3 (s3) + Mg. 2

Early hydration characteristics and paste structure of complex binding material containing high-volume steel slag were studied by the determination of hydration heat evolution, type of hydration products as well as micromorphology of hardened paste using calorimetry, X-ray diffraction, pressure porosimeter, and envirnoment scanning electron microscope. …

FIELD: technological processes. SUBSTANCE: invention relates to processing of ash-slag wastes from burning coal and can be applied to complex extraction of commercial products in form of finished concentrates both directly at thermal power plants and at sludge fields of TPP. Method for complex processing of ash-slag …

Processes for metal recovery reach from fairly simple to highly complex – depending on the value and content of the metal in the slag on one side, and on the desired application for the residual slag on the other side. Process types might be grouped into. Simple crushing and screening processes for coarse metal recovery

The effects of the newly introduced slag cooling process are studied using optical microscopy and scanning electron microscopy. Cooling in pits and in ladles is compared, based on copper droplet ...

Aiming at the recovery of copper from smelting slag, a flotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via polarizing microscope, SEM and XRD. Consequently, flotation …

Based on the background, a combinative residue-free leaching process for copper slag with sorting, roasting, acid leaching, carbonate precipitation, ammonia …

This paper demonstrates the results on the experimental smelting of the titanium rich slag and complex titanium-containing ferroalloy under the large-scale laboratory conditions that simulate industrial one. The technological researches of the process were performed on an ore-thermal furnace with 200 kVA transformer power. …

Slags from Zn-Pb metallurgy are processed on an industrial scale using pyrometallurgical and hydrometallurgical methods, alongside which a number of …

Coal gasification crude slag (CGCS) is the side-product of the coal gasification process, and its effective utilization has attracted great attention. A novel flocculant of poly-aluminum-ferric-acetate-chloride (PAFAC) was synthesized based on the recovery of CGCS by a two-step acid leaching process, namely HCl-aci

Materials. The smelting slag used in this study was obtained from a copper plant in China. Mineralogical analysis, performed using scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS), polarizing microscope and X-ray diffraction (XRD), indicated that fayalite (Fe 2 SiO 4) and magnetite (Fe 3 O 4) phases …

A theory-guided optimization strategy is present to achieve complex solid waste recovery. • Recovery of high purity FePO 4 directly from the LES acid leach solution.. Precipitation of FePO 4 and removal of Ni, Cu, and Al impurities is achieved in one step.. Life cycle analysis confirms the low energy consumption, low GHG emissions and high revenue of the …

the slag processing should be comprehensive, to extract non-ferrous metals and utilize the main macro components of slag: iron and silicon dioxide. Previously, the possibility of complex processing of nickel production slags (Southern Urals Nickel Plant PJSC, Orsk, Russia) based on hydrochloric acid leaching of the slag was shown [50].

Complex processing of steel-smelting slag as the main way of engineering-ecological development of society, were offered in the mid-sixties the past century, generally by scientists from the CIS countries. On the basis of their application it was supposed not only it is most useful to use the consumed raw material resources, …

Coal gasification crude slag (CGCS) is the side-product of the coal gasification process, and its effective utilization has attracted great attention. A novel flocculant of poly-aluminum-ferric-acetate-chloride (PAFAC) was synthesized based on the recovery of CGCS by a two-step acid leaching process, namely HCl-acid leaching and HAc-acid ...

The influence of steel slag, a by-product from the processing of iron to steel, on the hydration of cement during the hydration process of complex binder was studied by calorimetry, X-ray diffraction analysis, and Ca(OH)2 content determination. The results show that steel slag and cement affect each other's hydration by changing the hydration …

Research on Complex Processing of Ash and Slag at Angren Tpp. J Oil Gas Res Rev, 4(1), 01-08. Research on Complex Processing of Ash and Slag at Angren Tpp *Corresponding Author Asadjon Kambarov, Almalyk branch of Tashkent state technical University after named Islam Karimov, Almalyk, Uzbekistan.

In general, a copper slag contains about 35-45% iron and 0.4-0.5 copper, which indicates that this is a valuable secondary resource for recycling and utilization [33]. ... Roshchin, V., Adilov, G., Povolotckii, A., & Kapelyushin, Y. (2020). Complex Processing of Copper Smelting Slags with Obtaining of Cast Iron Grinding Media and Proppants. …

To address the increasing complexity of feed materials to pyrometallurgical processes, an integrated experimental and thermodynamic modeling research program is in progress to accurately characterize the multi-phase gas-slag-matte-speiss-metal-solids 17-component Cu/Pb-(Cu2O-PbO-ZnO-CaO-FeO-Fe2O3-SiO2)-(Al2O3-MgO)-S-(As-Bi-Sb …

Slag grinding exhibits complex nonlinear dynamics that challenge control. The proposed system monitors key operating parameters to assess machine health and automate control adjustments. Operating data are collected, and features linked to health status are identified using data mining techniques.

The article presents an outline of the new technology of pyrometallurgical processing of slag in the direct-to-blister process. The analysis is based on the example of the production process of KGHM Polish Copper SA. A new way of implementing the technology of recovery of copper from the flash furnace slag by means of different …

Complex Processing of Copper Smelting Slags with Obtaining of Cast Iron Grinding Media and Proppants. December 2020. KnE Materials Science. DOI: …

In this case, ash and slag wastes processing can be disposable. Pilot plant tests confirmed lab tests results in terms of the quality of the resulting iron-bearing concentrate and aluminum silicate product. The mass yield of iron-bearing concentrate and aluminum silicate product in terms of ash and slag volume was 3-9 % and 40-60 %, respectively.

The experimental results show that under the treatment condition in this work, about 70% of the iron was recovered from the waste slag, where the iron content in the concentrate is 57%. After further treatment with chlorinated segregation-magnetic separation, the iron content in the recovered slag can reach 83%.

Metallo's fuming process can be divided into five sub-unit operations, namely (1) production of plasma with compressed air in the plasma generators, (2) mixing of the air plasma with natural gas in the tuyeres, (3) reduction reactions between the slag-phase, gas-phase, and the petcoke pellets in the reactor and fuming of Zn, (4) …

processing slag from Waelz process, none entails a sufficient complex nature of its processing. In addition, the slag processed from the Waelz process, found in the dumps, has not been used as a secondary raw material to date. The elemental chemical composition of the slag has been determined, represented by compounds of cal-

A technological scheme for copper slag processing is proposed. It comprises 5 stages, namely: (i) air oxidation of the copper slag at a temperature above 800 °C for 2 h; (ii) hydrothermal treatment of the oxidized slag with sodium hydroxide solution (140 g/l) at 190 °C for 3 h; (iii) separation of the solid from the liquid phase by hot …

Abstract The properties and efficiency of a solid–liquid suspension based on ground blast furnace slag, which is used to deactivate the processes of oxidation and spontaneous combustion of coals, have been studied. It has been established that sequential impregnation of coal with water-soluble and thickened components of the …

GA Yurko, " Slag Fuming Process at the Cominco Smelter ", in Extractive metallurgy of lead and zinc, CH Catterill (ed.), Vol.2, AIME, New York, 1970,p. 330-347 * Calculated value T echnology 2 ...

The suspension of the copper droplets in the post-processing slag taken directly from the KGHM- Polska Miedź S.A. Factory (from the direct-to-blister technology as performed in the flash furnace) was subjected to the special treatment with the use of the one of the typical industrial reagent and with the complex reagent newly patented by the …