(PDF) RECYCLING OF IRON-CONTAINING WASTE OF

It is proposed that waste products formed at metallurgical plants be recycled by using the Romelt process – a continuous one-stage method of obtaining pig iron from iron-bearing raw materials in ...

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RECYCLING OF IRON-CONTAINING WASTE OF

2014-3-13  Getting into the agitated slag that contains coal, iron-bearing materials are reduced. Iron produced by the reduction becomes enriched in carbon. Drops of melted metal precipitate under gravity on the furnace hearth. Thus, three melted layers are formed in the furnace: the layer of metal on the furnace hearth, the layer of calm slag between the metal and the lower tuyeres, and the layer of agitated slag (the reaction zone). Two lined siphon sumps are situated each at one of the end sides of the furnace. They are used for separate tapping of metal and slag. The sumps are connected with the working space by channels of different heights. This ensures separate transportation of metal and slag into the metal and slag sumps. There are holes for tapping metal and slag, which are located at different heights. That ensures continuous free tapping of the melting products at the speed that matches the unit capacity. If the furnace

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OBTAINING COMPLEX COAGULANTS FROM WASTE OF

2020-9-8  The processes of production of pig iron, steel and cast irons are accompanied by the formation of a significant amount of slag. This waste can be sent to re-smelting, however, if it contains a high content of impurity components, it is sent to the dump as waste. This waste contains 40 – 50 % of iron compounds, with a developed surface.

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RECYCLING OF METALLURGICAL WASTE (SLAG), LOW

2013-12-6  2013-12-6  FeNi (15% Ni). The annual slag output in LARCO is about 1.8-2.0 million tones. 80% of the slag is cast off in the N.Euboian Gulf, with consequent encumbrance of the underwater landscape with an inert slag containing metals such as nickel, iron, chromium and cobalt. The rest 20% of the ERF slag is industrially used in the cement production

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Reduction of iron-containing metallurgical waste to obtain ...

The paper examines the physicochemical features of the reduction of iron oxides (as multicomponent scale waste) in various gases: H2, CH4, CO, and generator gas containing 33% CO and 67% N2.

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Metallurgical Slag - an overview ScienceDirect Topics

Briefly, blast furnace slag is formed when iron ore or iron pellets, coke, and a flux (such as limestone, CaCO 3, or dolomite, CaCO 3 MgCO 3) are melted together in a blast furnace. When the metallurgical smelting process is complete, the lime in the flux has been chemically combined with the aluminates and silicates of the ore and coke ash ...

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Valorization of Metallurgical Slag for the Treatment of ...

2018-2-5  Valorization of metallurgical slag as a material for the treatment of polluted water resources has a threefold environmental impact and enhances the sustainability of both the metallurgical industry and water-treatment processes. Firstly, the amount of waste slag

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Economic and environmentally beneficial treatment of

2012-2-7  more than two millions tons of slag were found in the Skouriotissa area alone. For a long time, slag was seen as a waste product fit only for dumping, but alternative applications were already in place hundreds of years ago.1 As early as 1589, cannon balls were cast from iron slag in Germany. Slag was

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Waste management in metallurgical - SlideShare

2015-10-20  1. Assignment On Waste management in metallurgical plants Submitted to Sir Muhammad shakeel Submitted by Gulfam Hussain Roll # MME-12-30 Institute of Advanced Materials Bahauddin Zakariya University Multan Waste: 2. Waste (also

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A perspective of methods for processing of metallurgical ...

1994-4-1  Principal technological scheme of waste-free processing of pyrite-containing materials. PROCESSING OF METALLURGICAL WASTES 209 Slag finishing can be done by way of: - reduction of liquid slag in an electric or Vanyukov furnace (liquid-bath fur- nace, LBF); - reduction and melting of solid slag in a blast furnace.

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RECYCLING OF IRON-CONTAINING WASTE OF

2014-3-13  metallurgical industry with a lot of enterprises who form iron-containing waste. The accumulated and current wastes of the metallurgical works are in Ukraine, Turkey, Russia, Hungary and others pollute the Black Sea pool. Even when works are stopped or are converted, waste will continue to occupy the areas and worsening ecological conditions.

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(PDF) RECYCLING OF IRON-CONTAINING WASTE OF

It is proposed that waste products formed at metallurgical plants be recycled by using the Romelt process – a continuous one-stage method of obtaining pig iron from iron-bearing raw materials in ...

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IRON AND STEELMAKING SLAGS: ARE THEY

of slag to the environments. Based on these results, some countries have classified iron and steelmaking slag as non hazardous waste. SLAG PRODUCTION Iron and steelmaking routes are shown in Figure 1.

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Reduction of iron-containing metallurgical waste to obtain ...

The paper examines the physicochemical features of the reduction of iron oxides (as multicomponent scale waste) in various gases: H2, CH4, CO, and generator gas containing 33% CO and 67% N2.

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Waste Slag Scientific.Net

When the metallurgical waste slags were heated from room temperature to 1300°C, the weight loss of Blast Furnace (BF) slag and ladle furnace (LF) refining slag are only 2.25% and 0.9%, respectively, while the weight loss of Basic Oxygen Furnace (BOF) slag and electric arc furnace (EAF) slag are more than 5%. These metallurgical waste slags ...

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Services - SmartScrap

2021-8-10  A company acquires a slag disposal area. The company has no experience in slag processing. Among the employees, there is a manufacturing expert that has experience in processing some other type of waste at best. However, he has no knowledge in designing any crushing and screening equipment. Here, the creativity begins

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ASA Slag Waste Classification Investigation 2004

2017-4-20  Material Classification of Iron and Steel Slag By-product Waste Classification Investigation Report 2004 Executive Summary As part of its Research and Development Programme for 2003/2004 the Australasian (iron steel) Slag Association Inc. (ASA) conducted an investigation into the chemical nature of iron and steel furnace slag’s being

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Research Progress of Impurity Removal from Metallurgical ...

2021-4-16  Based on the demand of the development of circular economy, the utilization of metallurgical solid waste has attracted more and more attention, one of the main ways of comprehensive utilization of metallurgical slag is internal recycling in steel plant to replace limestone as smelting flux, so it need to removal of phosphorus and sulfur from molten slag to decrease the burden of ...

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Improvement of roasting and metallurgical properties of ...

2020-10-1  Furthermore, titania-containing ore or slag is usually added in to the blast furnace to mitigate hearth erosion to prolong the campaign life of the blast furnace [, , ]. In this study, the effects of titanium slag on the roasting and metallurgical properties of FICP were experimentally investigated.

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Technologies of recycling metal-containing industrial waste

2020-9-27  It is established that such waste of the mining and metallurgical industry of Georgia as manganese-containing dust, slag, slime of separation of slags,

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Recycling of some steel industrial solid wastes for high-

2011-5-11  Sound-absorbing material preparation from iron-making slag Water-granulated slag is a by-product of ironmaking works. Its amount is about 300 kg per tonne of pig iron. Currently, it is usually employed as a raw material for the cement industry. The slag with rich pores and good sintering properties is easy to form blocks with high stress.

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Reducing the content of zinc in metallurgical waste in a ...

2019-5-10  and by-products from metallurgical plants and related operations, number ... waste, slag, sludge, lead, zinc, thermal treatment Introduction This work provides information on the removal of hazardous impurities from sludge. Hazardous ... containing zinc, and the reduced iron can 1be used in blast furnaces and to increase productivity.

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Innovational Construction Materials of LLP “EcostroyNII-PV ...

The article discusses the experience of recycling industrial waste from the electric power industry and metallurgy. Based on the experience of Ecostroy NII-PV LLP. The proposed technology for manufacturing building products from ash and slag waste provides innovative compositions of raw mixtures. What provides an increase in operational characteristics and labor productivity in construction.

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Innovation methodologies for the utilisation waste from ...

2013-2-26  It may be noted that slag containing about 12% TiO2 is too low for cost effective recovery of TiO2 as synthetic rutile. However, red mud from India contain up to 25% TiO2. Assuming a similar slag–metal distribution, this red mud will yield a slag of around 50% TiO2, which is very attractive for the recovery of TiO2. The investigations

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Smelting of metallurgical waste materials containing iron ...

The claims defining the invention are as follows: 1. A process for smelting a metallurgical waste material in a furnace, said waste material containing: at least one iron compound, at least one heavy metal, and at least one toxic element, the at least one heavy metal including at least one of lead, zinc and cadmium and the at least one toxic element including at least one of arsenic, antimony ...

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Treatments and Recycling of Metallurgical Slags

2018-5-7  Steelmaking plants continuously strive to reduce the environmental load in the steelmaking process, resulting in the recycling of energy, water, and other byproducts. In this chapter, techniques for the treatment and recycling of metallurgical slags are described. Metallurgical

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Innovative methodologies for the utilisation of wastes ...

2006-10-1  Based on the water absorption studies , it was found that the tiles containing fly ash, iron ore tailings and blast furnace slag in the ratio of 5:4.8:0.2 showed least water absorption (Kumar and Singh, 2004a). The tiles could be produced in glazed and unglazed conditions. Table 3 shows the properties of fired tiles. The European Nation (EN ...

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(PDF) Challenges and opportunities of utilization of ash ...

For existing coal-fired power plants, current methods of utilizing ash and slag waste may be considered in addressing new environmental and economic risks [1]. However, for new power sources ...

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copper slag plants - law.waw.pl

copper slag recycling plants China - Shanghai Xuanshi Company ... Read More.of Sustainable Concrete Containing Fly Ash, Copper Slag, . Experiments have been conducted to study the effect of addition of fly ash, copper slag, and steel and polypropylene fibres on compressive strength of . ... Copper slag is a copper industry waste that is ...

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Effect of Metallurgical Waste Properties on Determining ...

Recycling of solid waste generated from metallurgical industries will avoid disposal of wastes, enhance the use of secondary raw material fines and save costs. Numerous hydrometallurgical and pyrometallurgical processes, or a combination of both, have been proposed for the utilization of metallurgical waste. Due to insufficient knowledge of the properties of these wastes, most of these ...

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