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 …Web

The process has been widely employed in lead smelters, to recover lead and zinc from molten blast furnace slag. Typically, these furnaces are operated in a batch mode although a continuous zinc fuming process was successfully utilised by KCM at their lead smelter in Bulgaria until 2016 . Primary limitations of the box fuming process include the ...Web

Zinc slag (including zinc smelting slag and zinc leach residue) belongs to solid waste from the zinc pyrometallurgical and hydrometallurgical industry. Generated …Web

As seen in XRD patterns (Fig. 2), SEM and BSE images (Fig. 3) and point analysis (Table 2), iron silicate was the main component of the water-granulated copper slag, which was the base of slag matrix.Web

Large amounts of lead slag are produced during the production of primary lead and secondary lead. Considering lead concentrate smelting as an example, a primary lead smelting system production of 1 t of lead will discharge 7100 kg of lead slag (Hou, 2011).At the secondary lead recycling process, for each ton of metallic lead produced, 100–350 kg …Web

Most of the zinc and lead in the slag can be removed from the slag to dust. One has to note that all the above studies were conducted in laboratory scale. ... The molten slag is later cooled and granulated. Steel slag may also be referred to as steel furnace slag, steel making slag, ... Smelter slag: Shake Flask Mineral salt medium + S 0 ...Web

This paper highlights environmentally friendly utilisation of solid wastes like lead–zinc mill tailings and lead–zinc smelter fuming furnace slag (FFS) as paste backfilling for an underground metalliferous mine. Various experiments were conducted to study the effect of use of FFS as a fractional replacement for ordinary portland cement (OPC ...Web

Copper/lead/zinc slag (CLZS) Formed from the smelting of ores, it is generally granulated to form a sand size product with a top size of about 5 mm, with only a small quantity of material below 1 mm. ... Copper slags carry small amounts of the metals that were present in the original ores and smelter concentrates . The purpose of the …Web

It was found that the slump value of the GPC by using FA as a binder and partial replacement of washed river sand with granulated lead smelter slag (GLSS) shows slump value increases with ...Web

In the first set of experiments, raw slag (FFS) was used for paste backfill preparation and experimentation for uniaxial compressive strength (UCS) development, …Web

Reutilize Copper Smelter Slag for ... pouring molten slag into water gives a granulated amorphous slag ... (Fig. 3, phase 1), while the fayalite (with a high content of aluminum and zinc) ...Web

Granulated lead–zinc slag is taken into consideration specifically because of its suitable particle sizes for use as sand replacement in concrete. Additionally, …Web

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 different types of lead-zinc slag as a construction material which addresses the problem of leaching and the conservation of natural resources. ... Effect of granulated lead smelter slag ...Web

Ratios of 25%, 50%, 75% and by weight of sand are used.The effects of granulated lead-zinc slag (GLZS) as sand replacement material on the compressive strength and gamma radiation attenuation ...Web

DOI: 10.1016/S0008-8846(03)00234-5 Corpus ID: 135506527; THE USE OF FERRO-SILICATE SLAG FROM ISF ZINC PRODUCTION AS A SAND REPLACEMENT IN CONCRETE @article{Morrison2003THEUO, title={THE USE OF FERRO-SILICATE SLAG FROM ISF ZINC PRODUCTION AS A SAND REPLACEMENT IN CONCRETE}, …Web

Description of Slag Samples. The three converter slag samples used in the investigation were obtained from a western smelter. Chemical analyses of the respective slags are presented in table 1. Slag sample A, which contained 1.6 percent copper, comprised a 5-ton composite of four slag skims taken over a normal 14-hour converting …Web

For zinc smelting slag, the recoveries of zinc and lead were 94.5% and 97.6%, respectively, after reduction and volatilization procedure at 1050 °C for 6 h. (Hu et al., 2014). More than 95% of Zn and 80% of Pb was removed from zinc-bearing dust by carbothermic reduction at 1503 K with a C/O ratio of 1.0 (She et al., 2014).Web

Lead-Zinc Smelting Slag (LZSS) is an industrial waste produced during the smelting of lead (Pb) and zinc (Zn) from their ores. It is considered hazardous waste as …Web

A copper smelter slag from Lubumbashi, Democratic Republic of Congo, containing 1.4% Cu, 0.7% Co, 8.9% Zn and 20.9% Fe(II), has been used in this study. ... cobalt and zinc were produced, so that pulp filtration could be easily carried out. ... Base metals recovery from granulated copper slag by digestion method. Proceedings of the …Web

Up to 20% In passes into sublimates, up to 50% of it passes into slag, 30% into matte and up to 50% into rough lead. Gallium almost completely remains in the slag, into which about 75% Ge also passes.Web

Granulated lead–zinc slag is a by-product obtained during smelting of lead and zinc ore to separate the metal fraction from the unwanted fractions. ... Effect of granulated lead smelter slag on strength of fly ash-based geopolymer concrete. Construction and Building Materials, Volume 83, 2015, pp. 128-135.Web

Lead–zinc smelting slag (LZSS) is regarded as a hazardous waste containing heavy metals that poses a significant threat to the environment. LZSS is rich in aluminosilicate, …Web

decreased as the proportion of smelter slag to replace fly ash binder increased. However, the compressive strength was always higher than 30 MPa. Similarly, Nath [7] added zinc slag into fly ash to improve strength. The results showed that toxic-metal leaching was within the permissible limit, and the strength of samples was up to 71 MPa with ...Web

Slag, a byproduct of metallurgical smelting processes, is a mixture of metal oxides, silicon dioxide, and different compounds [1,2,3,4,5].It is produced from raw ore combustion or the extraction of specific minerals from smelting materials [1,5].Huge quantities of slags (1868.8 million tonnes of global steel production in 2019–2020) are …Web

Abstract An intensified oxidative acid leaching of copper–cadmium-bearing slag featuring using high-efficient oxygen carrier, such as activated carbon, was investigated to achieve high leaching rate of valuable metals. The effects of leaching variables, including agitation rate, sulfuric acid concentration, temperature, slag particle size, activated …Web

You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.Web

More than 80% of copper is in the form of sulphides. Cobalt is finely disseminated in the slag matrix. Zinc is present as ferrites and silicates. Leaching of the slag. The leaching batch tests of ground . Sulphuric acid leaching of copper smelter slag. Leaching tests were carried out at pH 2.5 on ground slag samples (<100 μm).Web

Metallurgical waste originating from the Zn and Pb refining process presents varying chemical composition and physical properties and contains varying quantities of pollutants. In the study, both fresh and weathered samples of production slag from the final Pb refining process were used to determine its physical parameters and chemical …Web

Lead–zinc smelting slag (LZSS) is a nonferrous metal smelting residue that belongs to China's national hazardous waste list. It is considered as a hazardous waste containing …Web

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]. The …Web

The incoming and outgoing slag and the water-granulated slag were analyzed in a smelter laboratory with a standardized method that uses a Philips PW2606 X-ray fluorescence (XRF) instrument (Malvern Panalytical, Malvern, U.K.). ... (2013) Influence of alumina on mineralogy and environmental properties of zinc-copper smelting slags. Int …Web

Journal of the Transportation Research Board, 2(2208), 1–8. Granulated nickel slag is essentially an angular, black, glassy slag "sand" with most particles in the size range of − 2 mm (No. 10 sieve) to + 0.150 mm (No. 100 sieve). It is more porous, with lower specific gravity and higher absorption, than air-cooled nicked slag.Web

Lead and lead–zinc slags are black to red in color and have glassy, sharp, and angular (cubical) particles. The unit weight of granulated lead and lead–zinc slags can vary from less than 2500 kg/m 3 (156 lb cf) to as high as 3600 kg/m 3 (225lb cf). Granulated lead slag is a black granular material having a high specific gravity of 2.65 to 3.79, due to the high …Web

At the smelter, the waste slag was granulated and cooled quickly by spraying with water. The waste slag was verified to have a complex amorphous structure by X-ray analysis. ... (Pb, As, Cr, Cd, etc.), the disposal of non-ferrous metallurgical waste slag (NMWS), such as copper slag, lead slag, zinc slag and nickel slag, has attracted more …Web

Three types of smelting slags originating from historically different smelting technologies in the Tsumeb area (Namibia) were studied: (i) slags from processing of carbonate/oxide ore in a Cu–Pb smelter (1907–1948), (ii) slags from Cu and Pb smelting of sulphide ores (1963–1970) and (iii) granulated Cu smelting slags (1980–2000). Bulk …Web