Chemical analysis of the ISF slag is presented in Table 1.It is typical of an ISF slag with about 9.2% zinc oxide. Silica and alumina, which take part in the geopolymerization process, are significantly less than that found in fly ash, which has been used for making geopolymers in many previous studies (Kumar and Kumar, 2011, …
The submerged plasma slag fuming process is a new technology that uses electricity as an energy source instead of fossil fuel burners. ... A long history of zinc processing starting with pilot ...
A study involving industrial measurements and mathematical modeling has been conducted to eluci-date kinetic phenomena in the zinc slag fuming process. In the first part of this three-part paper, the results of industrial measurements and observations are presented. In Part II a mathematical model of the process is developed, and finally in Part III the …
The mineral transformation mechanism, microstructure evolution and chemical reactivity of Zinc-slag sintered at 1350–1550 °C for 10–60 min were systematically studied using Fe 2 O 3, Al 2 O 3, SiO 2, CaO, MgO and ZnO as raw simulation materials. The molar ratio, sintering temperature and duration could affect the …
The present review article links information of the different fields to conclude on slag processing routes which appear to be suitable for merging economic and ecological requirements. ... Bodenan F et al (2001) Primary phases and natural weathering of old lead-zinc pyrometallurgical slag from Príbram, Czech Republic. Can Mineral …
Metallurgical slag and dust (MSD) are abundant Zn-containing secondary resources that can partially alleviate the shortage of zinc minerals, with hazardous characteristics and a high recycling value. …
Engineering Cases Overview. Yunnan Chihong Zn & Ge Huize smelter is currently producing 150,000 tons of zinc and 80,000 tons of lead per year. Among them, the original design of lead smelting process is TSL oxidation + SSC reduction, SSC reduction slag into the FF; zinc smelting process is roasting + low acid leaching, leaching …
Nevertheless, most copper of flash converting slag exists in the form of Cu 2 O, which increases the processing difficulty of the copper smelting process. 12,13 Impurities such as Pb/Zn enter copper matte during the smelting process, reducing the quality of copper matte and increasing the impurity removal pressure in subsequent …
production. The treatment of zinc slag (including zinc smelting slag and zinc leach residue) is more and more important to improve global zinc production and environmental protection. (2) Due to the complex composition of zinc smelting slag and the low content of valuable metals, the economic and efficient recovery of polymetallic elements
Metallurgical slag and dust (MSD) from lead and zinc smelting, steel dust and galvanized steel scrap are important secondary sources of zinc and other valuable metals. This paper describes the production feasibility and rationality of a cleaner zinc recovery process using MSD and a hydrometallurgical method.
Lead-zinc slag is a by-product produced during the smelting of Pb and Zn from their ores. This review study is conducted to evaluate the performance of using …
The latest research shows that ISF zinc smelting slag can be used as a building material using geopolymerization process, which involves formation of a new …
the total lead, and zinc mainly exists in the form of zinc ferrite and zinc silicate, accounting for 89.47% and 5.59% of the total zinc, respectively. The phase compositions and microstructure of the copper flash converting slag were determined by x-ray diffraction (XRD, D/max-2550, Cu Ka radiation,
The mineral transformation mechanism, microstructure evolution and chemical reactivity of Zinc-slag sintered at 1350–1550 °C for 10–60 min were systematically studied using Fe 2 O 3, Al 2 O 3, SiO 2, CaO, MgO and ZnO as raw simulation materials.The molar ratio, sintering temperature and duration could affect the …
The present study focuses on the experimental investigation of sulphatizing roasting of flotation tailings from copper slag processing using iron (II) and (III) sulfates followed by water leaching.
Recently, there is an increasing interest in use of zinc slag-containing materials as partial substitutes for sand in road materials. ... Three sections of stockpiled waste materials from processing zinc and lead ores, located in the vicinity of Zn-Pb mining and smelting complex in Poland, were selected. ...
The hazardous zinc smelting slag is generated from the metallurgical process of zinc extraction [6]. The Imperial smelting process (ISP) is capable of …
Lead smelting slag / lead smelter slag constitutes both the primary and secondary slags from the lead extraction industry [4], where the smelting of lead sulphide for the lead production process produces the primary lead slag [5]. The hazardous zinc smelting slag is generated from the metallurgical process of zinc extraction [6].
On a laboratory scale, a method has been developed to process slags from zinc and lead production from former Yugoslavian plants by gravity enrichment of the slags, resulting …
The zinc oxide fume is subsequently collected in the bag house. Figure 1 shows a schematic diagram of the zinc slag fuming process in the case of a top submerged lance
Among the hydrometallurgical methods of processing of zinc-containing wastes (e.g., slags, cakes, and dusts), the most popular techniques are the Waelz …
The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be directly returned to the ironmaking and steelmaking processes due to their zinc content. A large amount of SMD produced during steelmaking has become a major challenge for …
The application of oxygen-rich side blowing furnaces in the direct lead-smelting process has excellent potential and ideal capability for co-processing various feedstocks, such as zinc leaching ...
The slag and the molten steel are removed by tilting the entire furnace and pouring the liquids out through the taphole. (b) A basic oxygen furnace is being filled with molten iron from a blast furnace. ... Zinc smelting is the process of converting zinc ores into pure zinc. Zinc smelting has historically been more difficult than the smelting ...
Metallurgical slag and dust (MSD) from lead and zinc smelting, steel dust and galvanized steel scrap are important secondary sources of zinc and other valuable …
The microwave irradiation is used to roast zinc slag oxidation dust in the presence of concentrated sulfuric acid with the aim of accelerating roasting process. The roasted material is leached with tap water for the recovery of zinc and indium.
The mineral transformation mechanism, microstructure evolution and chemical reactivity of Zinc-slag sintered at 1350–1550 °C for 10–60 min were …
Heavy-metal ions in LZSS and COPR were immobilized successfully by chemical and physical means, which was detected by analyses including environmental scanning electron microscopy with energy-dispersive spectrometry, Fourier transform infrared spectrometer, and X-ray diffraction.
Slag fuming is a reductive treatment process for molten zinciferous slags for extracting zinc in the form of metal vapor by injecting or adding a reductant source such as pulverized coal or lump coal and natural gas. A computational fluid dynamic (CFD) model was developed to study the zinc slag fuming process from imperial smelting furnace …
The processing difficulty is also significantly increased. Storage of zinc smelting slag will not only cause serious harm to the surrounding environment, but also cause waste of valuable metal resources. This article summarizes the harm of zinc smelting slag and the current utilization methods, and focuses on the principle advantages and ...
Slag fuming is a reductive treatment process for molten zinciferous slags for extracting zinc in the form of metal vapor by injecting or adding a reductant source such as pulverized coal or lump ...
