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Coal rate injection control in a slag cleaning furnace

Aug 01, 2000 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

Slag Treatment in the EAF / SAF with Coke Injection

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

Intelligent sensor for coal powder rate injection in a

Jul 01, 2000 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.

Carbon Injection into Electric Arc Furnace Slags

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

(PDF) Slag cleaning reactor for metal recovery in copper

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

Carbon Injection into Electric Arc Furnace Slags

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

Reduction of Waste Smelter Slags using Top-Submerged

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

Efficient Recovery of Copper and Cobalt from the Matte

By injecting 2 pct coke and 2 pct pyrite, the contents of Cu and Co in cleaned slag decreased to 0.46 and 0.01 pct, respectively. It proves that the injection of additives into molten slag is an effective method to recover Cu and Co from the matte-slag mixture of ISA furnace.

(PDF) Slag-Coke Interactions in the Lead Blast Furnace

The interaction between metallurgical coke and slag is an important aspect of furnace operation in both lead production and ironmaking. This interaction occurs in the dripping zone of the blast

(PDF) Slag cleaning reactor for metal recovery in copper

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

Efficient Recovery of Copper and Cobalt from the Matte

Aug 24, 2018 A powder injection device was purpose-made to inject additives into molten slag in dispersion state, and a laboratory experiment was carried out to simulate this process. By injecting 2 pct coke and 2 pct pyrite, the contents of Cu and Co in cleaned slag decreased to

Reduction of FeO in Slag with Coal Char

Coke–slag reaction rates are largely influenced by total mineral matter content as well as composition. cheaper source of clean energy is needed. and injection coke oven gas-blast

Minimization of Copper Losses in Copper Smelting Slag

Sep 21, 2012 During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting copper losses in the discard slag in the range of

RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

In addition to coke fines, the flue dust also contains fines generated from BOF slag, limestone and pellets, and as a result it contains basic oxides such as CaO and MgOas well as a considerably high amount of Fe 2O 3. In several studies on injection of fluxes and iron ore, the effect on hot metal composition has been considered.

️ US $42.77 1000ML Ultrasonic Cleaner Petrol injector

1000ML Ultrasonic Cleaner Petrol injector Spark Plug Coke Clean Launch CNC602A CT100 Special Offer On Aliexpress : https://s.click.aliexpress/e/_AoZrxr*...

Coke in the iron and steel industry ScienceDirect

Jan 01, 2019 13.1. Introduction13.1.1. Coke types. Three main types of coke are produced from coking coals (Coal Technology, 2017) as follows:Metallurgical coke is produced in coke ovens and is mainly used for the iron ore reduction in blast furnaces (BFs). It is also consumed in blast and electric furnaces for ferroalloy production and for the reduction of other metal oxides, chlorides, phosphates

Mathematical modelling of the injection of coke oven gas

Oct 17, 2005 The influence of the following parameters on the predicted velocities, temperatures and composition of the gas at the tuyere outlet is studied in this paper: (i) injection amount of coke oven gas, (ii) the use of 1 or 2 injection lances and (iii) the influence of the injection angles when using 2 injection

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

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. The gas injection of solid

Influence of slag composition on reduction control and

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

Carbon Injection into Electric Arc Furnace Slags

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

Reduction of Waste Smelter Slags using Top-Submerged

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

Dalmia Slag Cleaning

Slag Cleaning Furnace. In this furnace, copper rich oxide slags are melted in electric arc furnaces and coke & copper pyrite are added to reduce copper content in the slag. In order to increase reaction rate, slag is over-heated to produce low viscosity aggressive slag.

(PDF) Slag cleaning reactor for metal recovery in copper

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

Reduction of FeO in Slag with Coal Char

Coke–slag reaction rates are largely influenced by total mineral matter content as well as composition. cheaper source of clean energy is needed. and injection coke oven gas-blast

Influence of slag composition on reduction control and

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

Minimization of Copper Losses in Copper Smelting Slag

Sep 21, 2012 During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting copper losses in the discard slag in the range of

RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

In addition to coke fines, the flue dust also contains fines generated from BOF slag, limestone and pellets, and as a result it contains basic oxides such as CaO and MgOas well as a considerably high amount of Fe 2O 3. In several studies on injection of fluxes and iron ore, the effect on hot metal composition has been considered.

Coal for Pulverized Coal Injection in Blast Furnace

Oct 04, 2018 The injection of the pulverized coal into the BF results into (i) increase in the productivity of the BF, i.e. the amount of hot metal (HM) produced per day by the BF, (ii) reduce the consumption of the more expensive coking coals by replacing coke with cheaper soft coking or thermal coals, (iii) assist in maintaining furnace stability, (iv

How to clean up your cocaine Rap Basement Message Board

Jan 29, 2021 But there is an easy, no chemistry background method to cleaning your coke from leftover impurities. Is your coke any of these things: Hard-hitting, edgy, ampy, non-sociable, uncomfortable, paranoid, heart racey, tweaky, introverted? Well it's not supposed to. Clean cocaine is actually the exact opposite.

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

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. The gas injection of solid

Recycling Waste Plastics in EAF Steelmaking: Carbon/Slag

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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The Melting Properties of Tuyere Slags with and without

b) Bosh slag–consisting of the primary slag, all the addi-tives and fluxes dissolved in it and some ash from coke consumed for direct reduction and carburisation; c) Tuyere slag–formed by the ash content of coke and coal burnt in front of the tuyeres and, if injection of fluxes are used, the injected flux;