ke injection in to slag cleaning

2021-03-28T09:03:00+00:00
  • Slag Treatment in the EAF / SAF with Coke Injection

    2013-10-14  zA slag cleaning treatment with metal recovery is necessary for ecological and economical reasons zAt the IME the intensification of slag cleaning of lead/zinc and copper slags in the EAF by coke injection is investigated, including injection trials in a water model and test runs in the pilot-scale EAF

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  • Coal rate injection control in a slag cleaning furnace ...

    2000-8-1  The initial study to control the coal rate injected into a slag-cleaning furnace (SCF), based on a soft sensor, was developed at Caletones Smelter, Ch

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  • Intelligent sensor for coal powder rate injection in a ...

    2000-7-1  Intelligent sensor for coal powder rate injection in slag cleaning furnace 779 During the vessel discharge, the operator tries to maintain the coke flowrate by manipulating the set point of the pressure controller on the nitrogen line. Sometimes the blow valve is used to reverse the coke compactness in the lower part of the cone.

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  • Carbon Injection into Electric Arc Furnace Slags

    2014-6-18  Recent experiment in our laboratory demonstrates that an increase in slag foaming with carbon injection rate is limited by slag volume. The current work has identified a relationship between foam height, carbon injection rate and slag volumes, which ... carbon in the form of coke, char or coal, is injected into the furnace and reacts with slags ...

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  • Copper Smelting Slag Cleaning in an Electric Furnace

    2020-10-16  Slag containing large amounts of magnetite cannot achieve the purpose of slag cleaning. Injection below the slag layer. The lance was inserted into the slag layer with its tip 1 cm from the bottom of the crucible in this set of the experiment, and the vertical section of sample after reduction is shown in Figure 6. The slag sample was divided ...

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  • COMBUSTION AND SLAG FORMING EFFECTS BY CO

    2017-2-6  When injection of BOF slag is assumed, it is also included in the slag. The specimens tested were made from a mixture of coke ash, coal ash and BOF slag in a ratio depending on coke rate, and the amount of PC and BOF slag assumed to be injected. The PCR of 110-160 kg/tHM and a BOF slag injection rate of 0-56 kg/tHM were considered in

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  • Recycling Waste Plastics in EAF Steelmaking:

    Hydrogen chloride during polyvinylchloride injection was about 5 ppm in the gas cleaning system. ... and products across the metallurgical coke/slag interface with oxides present in coke ash ...

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  • Reduction of Waste Smelter Slags using Top-Submerged ...

    2015-9-7  relatively poor contact between the coke and the slag, since the coke floats on the slag surface. The coupling of this relatively inefficient slag cleaning process with a modem intense smelting process is a technological mismatch and highlights the need for the development of more intense slag cleaning processes.

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  • Recovery of cobalt, nickel, and copper from slags,

    2012-2-7  In the slag-cleaning process considered here, the furnace would be operated with a layer of electrically conductive coke or coal covering the slag. As the electrodes of the AC furnace penetrate this layer, there exists the possibility of the current flowing between the electrodes on the surface of the slag.

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  • Method for cleaning slag in an electric furnace ...

    1998-3-25  What is claimed is: 1. In a method for cleaning slag created in a metallurgical process of a non-ferrous metal, in which the slag, fed into an electric furnace, forms by means of a reductant, a reduced slag layer and a matte layer beneath the slag layer, said electric furnace being equipped with a slag feed inlet at maximum melt level, a slag tapping hole at the bottom part of the slag layer ...

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  • (PDF) Slag cleaning reactor for metal recovery in

    A new intensive slag cleaning reactor can be used for recovery of ferro-alloys, recycling of steel mill waste, and the reconditioning of waste deposits. ... A floating coke bed on the slag surface ...

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  • Reduction of Waste Smelter Slags using Top-Submerged ...

    2015-9-7  relatively poor contact between the coke and the slag, since the coke floats on the slag surface. The coupling of this relatively inefficient slag cleaning process with a modem intense smelting process is a technological mismatch and highlights the need for the development of more intense slag cleaning processes.

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  • Influence of slag composition on reduction control and ...

    2011-2-27  due to changes in size and quality of metallurgical coke, and slag chemistry. Table II shows the average composition of SCF slag from March 2009 to December 2010. Table I: Typical analysis of Slag Cleaning Furnace (SCF) slag, mass % Cu Fe SiO2 CaO MgO Co S Al2O3 Fe3O4 5.48 27.03 30.93 8.09 3.242 0.76 0.38 6.39 14.02

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  • NOTE TO USERS

    4.3 Converüng Followed By Nitrogen Injection and then Coke Addition ... Figure 2.21: Cornparison of three slag cleaning tests investigateû ( 10% pyrite wash, 60min hydrogen reduction, seffling only) ...

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  • Blast Furnace Granulated Coal Injection System ...

    2020-1-22  injection of coal into the blast furnace to replace some (up to about one third) of the coke. When originally put into service, the Burns Harbor Plant could produce all the coke required for the two blast furnaces operating at 5,000 NTHM per day each (10,000 NTHM per day total).

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  • ENZO RUSCIO EVP COMPETITIVE DANIELI STEEL

    POLYMER INJECTION BENEFITS TECHNOLOGY The main benefits are: > superior slag foaminess > reduction in the amount of carbon injectant (rubber crumb / coke blend) required compared to 100% coke. The practical consequences of a better foaming slag are: > reduction of electrical energy consumption > productivity increase with reduced power on time

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  • th SEM B TECH DEPARTMENT OF METALLURGY AND

    2017-10-27  3-except the central coke all the coke are burns and in entire bured is in molten state. Hearth 1-stratification of metal and slag occurs and it is tapped into laddles through tap holes 2- unburnt coke floats on the metal and stay over it and forming a dead man zone 3-smallest cross section of the furnace 4- walls are parallel

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  • Corporate Presentation - unige.it

    2020-11-5  Take-over of the blast furnace, coke making and direct reduction activities as well as the ... injection plants • Gas cleaning plants ... • Cu slag granulation facility, KGHM, Poland Major

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  • Method for cleaning slag in an electric furnace ...

    1998-3-25  What is claimed is: 1. In a method for cleaning slag created in a metallurgical process of a non-ferrous metal, in which the slag, fed into an electric furnace, forms by means of a reductant, a reduced slag layer and a matte layer beneath the slag layer, said electric furnace being equipped with a slag feed inlet at maximum melt level, a slag tapping hole at the bottom part of the slag layer ...

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  • OBJECTIVE: SCOPE: 3. PROCESS

    2019-12-13  Gas Cleaning Plant) before transporting it to the BFG Holder / Flare Stack after internal consumption. vi) Slag Granulation Plant (SGP) / Slag Dumping Yard: During the process of iron making, the impurities are fluxed and removed as slag. The hot liquid slag is made into slag

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  • ENZO RUSCIO EVP COMPETITIVE DANIELI STEEL

    POLYMER INJECTION BENEFITS TECHNOLOGY The main benefits are: > superior slag foaminess > reduction in the amount of carbon injectant (rubber crumb / coke blend) required compared to 100% coke. The practical consequences of a better foaming slag are: > reduction of electrical energy consumption > productivity increase with reduced power on time

  • Get Price
  • OBJECTIVE: SCOPE: 3. PROCESS

    2019-12-13  Gas Cleaning Plant) before transporting it to the BFG Holder / Flare Stack after internal consumption. vi) Slag Granulation Plant (SGP) / Slag Dumping Yard: During the process of iron making, the impurities are fluxed and removed as slag. The hot liquid slag is made into slag

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  • 12.5 Iron And Steel Production

    2015-9-10  0.65 tons of coke; 0.25 tons of limestone or dolomite; and 1.8 to 2 tons of air. Byproducts consist of 0.2 to 0.4 tons of slag, and 2.5 to 3.5 tons of blast furnace gas containing up to 100 pounds (lb) of dust. The molten iron and slag are removed, or cast, from the furnace periodically. The casting

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  • th SEM B TECH DEPARTMENT OF METALLURGY AND

    2017-10-27  3-except the central coke all the coke are burns and in entire bured is in molten state. Hearth 1-stratification of metal and slag occurs and it is tapped into laddles through tap holes 2- unburnt coke floats on the metal and stay over it and forming a dead man zone 3-smallest cross section of the furnace 4- walls are parallel

  • Get Price
  • Corporate Presentation - unige.it

    2020-11-5  Take-over of the blast furnace, coke making and direct reduction activities as well as the ... injection plants • Gas cleaning plants ... • Cu slag granulation facility, KGHM, Poland Major

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  • Injection of coal and waste plastics in blast furnaces

    2019-12-11  injection as a solid through the tuyeres in a similar way to pulverised coal. The co-injection of waste plastics and coal into BFs is the subject of this report. Pulverised coal injection (PCI) is a well established technology. It is practised in most, if not all, countries with coke-based BFs, and new BFs are nearly always fitted with PCI ...

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  • Blast Furnace Granulated Coal Injection System ...

    2020-1-22  injection of coal into the blast furnace to replace some (up to about one third) of the coke. When originally put into service, the Burns Harbor Plant could produce all the coke required for the two blast furnaces operating at 5,000 NTHM per day each (10,000 NTHM per day total).

  • Get Price
  • Improving Copper Recovery from Production Slags by ...

    2013-10-14  Feedstock is a slag resulting from the SAF process of the Aurubis AG. Furthermore, the principle of the new SMS Siemag stirring reactor for intensive slag cleaning and the construction of a technical-scale reactor in Aachen and a demonstration-scale reactor in Ham-burg will be presented. 1.1 Why is slag cleaning a growing concern

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  • Blast Furnace Granular-Coal Injection System

    The furnace coke rate during the period was 661 lb/NTHM, down from 740 lb/NTHM when operating on natural gas. Increasing slag volume in the furnace controlled the additional sulfur and silicon loading from the coal injection to specified levels in the hot metal product.

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  • Method for cleaning slag in an electric furnace ...

    1998-3-25  What is claimed is: 1. In a method for cleaning slag created in a metallurgical process of a non-ferrous metal, in which the slag, fed into an electric furnace, forms by means of a reductant, a reduced slag layer and a matte layer beneath the slag layer, said electric furnace being equipped with a slag feed inlet at maximum melt level, a slag tapping hole at the bottom part of the slag layer ...

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