Processing of Non-Ferrous Metallurgy Waste Slag …
The article presents an overview of the methods of processing slag from Waelz process, and various approaches employed by scientists globally, aimed at …
(PDF) Measurement of the Oxygen Potential of Non-Ferrous Slags …
Different slags from non-ferrous pyrometallurgical processes were analysed at 1100 and 1200 °C and pO2 values between 10-3 and 10-12 bar were obtained. The measurements were evaluated with thermodynamic calculations and using processing considerations.
Characteristics and environmental aspects of slag: A …
Other non-ferrous slags include those generated from phosphate, chromite (FeCr 2 O 4), and Al ores, among others; however, these slag types are not discussed …
PROCESS FOR CONTROLLED SLOW COOLING OF NON-FERROUS SMELTING SLAGS
[57] ABSTRACT A process for controlled slow cooling of non-ferrous smelting slags, such as copper slags, for the recovery of the non-ferrous metals contained therein by subsequent crushing, milling and ?otation operations is disclosed. The process comprises the steps of pouring the molten slag into a ladle, allowing the slag to slowly cool and …
Evaluation of copper slag and stainless steel slag as
Non-ferrous slags often have high iron (> 40 wt. %) and silicon contents, while inclusion of calcium and aluminium is generally limited . The amorphous fraction of these non-ferrous slags can be high, depending on cooling conditions after smelting, with iron present in both amorphous and crystalline phases. Crystalline ...
Non-Ferrous Slag – ABO Global
Slags that are generated in non-ferrous metallurgical operations, each of which has its own specification and properties, and overall containing higher percentages of heavy metals. Slag from copper industry. Slag from zinc industry.
The potential environmental risk implications of two typical non …
Therefore, the aim of this study was to assess the potential environmental hazard of toxic elements in non-ferrous metal slags from Guangxi (GX) and Yunnan (YN) by comparing the leaching behavior ...
Use of Treated Non‐Ferrous Metallurgical Slags as …
2. Materials and Methods. 2.1. Materials. A sample of slag generated in the smelting process of copper (S1) and one generated from the smelting process of primary/secondary lead concentrates (S2) along with a syn‐thetic ferro‐silicate slag …
Accelerated carbonation of ferrous and non-ferrous slags …
Among the non-ferrous slags carbonated individually, lead slag carbonated at 10 barg exhibited carbonate-cementation. The carbonate-bonded monoliths containing stainless-steel slag exhibited high compressive strengths, individually or as in its mixes with other slags. In stainless-steel slag, while its individual carbonation also showed a ...
Metallurgical Slag
Utilisation of low-calcium slags to improve the strength and durability of geopolymers. K. Komnitsas, D. Zaharaki, in Geopolymers, 2009 16.1 Introduction. Millions of tons of metallurgical slags, consisting mainly of silicate and glassy phases, are produced every year from several types of furnaces during non ferrous, ferrous metal and steel …
Review on operation of spinel-containing slags of the non-ferrous
Slags with molar ratios of (FeO + CaO)/SiO2 = 1.1–2.3 and FeO/CaO = 1.9–5.4 were synthesized, as they represent slags found within the non-ferrous metallurgical industry. Higher SiO2 content ...
Upcycling of non-ferrous metallurgy slags: Identifying the …
@article{VanDeSande2020UpcyclingON, title={Upcycling of non-ferrous metallurgy slags: Identifying the most reactive slag for inorganic polymer construction materials}, author={Jorn Van De Sande and Arne Peys and Tobias Hertel and Hubert Rahier and Yiannis Pontikes}, journal={Resources Conservation and Recycling}, …
Slag and dross | Non-Ferrous | Kuettner Group
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Carbonated steel slags as supplementary cementitious …
With increasing interest in utilizing metallurgical slags for mineral carbonation, there is a need to find applications for carbonated slags. The scope of this study is to explore the utilization potential of carbonated steel furnace slags (SFS) as supplementary cementitious materials (SCM) to produce low-CO 2 cement-based materials. Two …
Valorising Slags from Non-ferrous Metallurgy into Hybrid
Abstract The environmental impact of ordinary Portland cement (OPC) can be decreased by using alternative precursors, such as non-ferrous metallurgy slags (NFMS), which can be alkali-activated to form an inorganic polymer binder (IP). However, an IP demands the use of a high molarity alkali-solution, which is expensive, has a relative …
Geochemistry and mineralogy of metallurgical slag
Ferrous slags include blast furnace, steelmaking, and ferroalloy slags; the compositions of these slags are generally dominated by Ca and Si, some with significant Al, Fe, and/or Mg. Whereas, the composition of non-ferrous slags, mostly from base-metal production, are generally dominated by Fe and Si with significant but lesser amounts of Al ...
Utilization of ferrous slags as coagulants, filters, adsorbents
The physical and chemical constitution of ferrous slags from diverse sources is depicted in Table 1.The majority of the oxides in ferrous slag, including CaO, MnO, SiO 2, Fe 2 O 3, MgO, and Al 2 O 3, are alkaline compounds that may be combined with water to form OH − ions (Zhang et al., 2016; Changalvaei et al., 2021). Table 1 displays that the …
Advances in the use of recycled non-ferrous slag as a resource for non
Some non-ferrous slags contain significant amounts of silica and alumina, which make these solid wastes promising raw materials for geopolymerization for conversion into valuable construction materials such as binder, brick, and concrete. Among the broad groups of alkali-activated binders, there are two main subclasses: high-calcium …
Upcycling of non-ferrous metallurgy slags: Identifying the …
1. Introduction. Slags are a by-product of metal production via pyrometallurgical routes. They encompass ferrous metallurgy slags, e.g. electric arc furnace steel slags and blast furnace slags, and non-ferrous metallurgy slags, e.g. copper slags, lead slags and FeNi slags (Piatak et al., 2015).Besides blast furnace slags, …
Process for controlled slow cooling of non-ferrous smelting slags
A process for controlled slow cooling of non-ferrous smelting slags, such as copper slags, for the recovery of the non-ferrous metals contained therein by subsequent crushing, milling and flotation operations is disclosed. The process comprises the steps of pouring the molten slag into a ladle, allowing the slag to slowly cool and solidify in the ladle at least to …
(PDF) Phase Equilibrium Studies of Nonferrous Smelting Slags…
Pyrometallurgy is the primary technique for the production of many nonferrous metals such as copper, lead, and zinc. The phase equilibrium information of smelting slags plays an important role in ...
Upcycling of non-ferrous metallurgy slags: Identifying the …
Non-ferrous metallurgy slags, e.g. copper slags, for example, are often merely used for sandblasting or as road base filler (Dhir et al., 2016; Murari et al., 2014; Piatak et al., 2015). In the Belgian region of Flanders, 376 kt of non-ferrous slag is produced yearly (Ovam, 2016). This is 63 kg/capita or 8.5 % of the cement consumption.
An overview of recovery of metals from slags
Unlike iron and steel slags, the application of non-ferrous slags may cause environmental concerns since they usually contain a notable amount of heavy metals or even toxic elements with a relatively high solubility (Manz et al., 1997, Atzeni et al., 1996). The reports on the application of non-ferrous slags are relatively few. 3.1. Copper ...
Energy recovery from high temperature slags
Metallurgical slags are conventionally divided into ferrous and non–ferrous, based on the metal produced in each process. The typical chemical composition and generation rate of various slags for the major metal manufacturing processes are provided in Table 1, Table 2.As seen, the relative amount of slag produced per ton of iron/steel is …
Use of Treated Non-Ferrous Metallurgical Slags …
Ł ukasiewicz Research Network—Institute of Non ‐ Ferrous Metals, Ul. Sowi ń skiego 5, 44 ‐ 100 Gliwice, Poland; katarzyna.klejn [email protected]
Mineralogy of Metallurgical Slags | SpringerLink
In non-ferrous metallurgy, the yearly amount of slags produced is much lower than in ferrous metallurgy . In Zn and Pb production, there are two main processes with specific types of slags: the Zn/Pb blast furnace (BF) process and the Imperial Smelting Process (ISP) [ 53, 90 ].
The potential environmental risk implications of two …
The potential environmental risk implications of two typical non-ferrous metal smelting slags: contrasting toxic metal (loid)s leaching behavior and geochemical …
The potential environmental risk implications of heavy
1. Introduction. Nonferrous metal smelting activities are among the major sources of heavy metal pollution, and have resulted in a series of negative environmental problems, which have inevitably generated large quantities of a solid wastes termed smelting slags (Lei et al., 2020a).It is estimated that about 3 × 10 8 t of smelting slags is …
CHAPTER 3. Geochemistry and Mineralogy of Slags
Slags from the non-ferrous metallurgy, have relatively high concentrations of iron and silicon with lower amounts of calcium and aluminum [15, 16,18]. Their intrinsic characteristics such as ...
Introduction: Metallurgical Slags
Slags originating from non-ferrous metal production are also used in construction applications; however, the quantities generated annually are significantly …
