coke injection in to slag cleaning

MJ Series Jaw Crusher

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as a coarse crushing crusher. Its purpose is to crush rocks into smaller particle sizes for subsequent processing in the crushing section. Because it can effectively…

MC Series Single-Cylinder Hydraulic Cone Crusher

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is used in secondary and fine crushing operations. It is widely used in metallurgy, construction, highway, chemical and building materials industries. It…

ML Series Vertical Shaft Impact Crusher

ML Series Vertical Shaft Impact Crusher

Vertical shaft impact crusher is often used in the final crushing circuit. Due to the ability to produce fine-grained final products, ML series vertical shaft impact crushing equipment is very popular…

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD series multi-cylinder hydraulic cone crusher is used in the second and third stages of mineral processing and stone crushing, as well as the superfine material crushing of some rocks and ores. MD series…

MF Series Fixed Shaft Circular Vibrating Screen

MF Series Fixed Shaft Circular Vibrating Screen

In order to eliminate the phenomenon of unbalanced vibration, unstable amplitude, on/off bounce, poor screening effect, and cracking of the screen box caused by diagonal vibration in the actual screening…

MGD Series Vibrating Feeder

MGD Series Vibrating Feeder

MGD series vibrating feeder is designed for ultra-heavy working conditions and is suitable for feeding materials to primary jaw crushers, primary impact crushers and primary hammer crushers. It is widely…

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

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.

Blast Furnace Coke Properties and

Oct 21, 2018· Injection of coal inevitably affects raceway conditions which, in turn, have consequences outside the raceway. Unburnt particles leaving the raceway can cause operational problems such as reduced permeability, undesirable gas and temperature distributions, excessive coke erosion, and an increase in char carryover.

(PDF) Recycling of waste plastics for slag foaming in EAF ...

Table 13.1 summarizes the more than three hundred years' history of coke use in the BF. At the beginning of the 18th century, coke was first introduced into the BF by Abraham Darby in Coalbrookdale, England, due to rising costs of charcoal (Rehder, 1998).Later on, the insufficient mechanical strength of charcoal for larger (exactly, higher) BFs promotes its replacement with coke.

Reduction of FeO in Slag with Coal Char

Biochar improved kinetics of the slag cleaning when compared to coke; higher distribution coefficients were achieved quicker and consequently lower metal concentrations in slag, thus causing a lower matte grade (high Fe in matte). ... addition and/or stirring by submerged gas injection. The battery scrap addition did increase the matte-to-slag ...

Calcined Petroleum Coke, Injection Coke / Injection Carbon ...

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;

(PDF) Recycling of waste plastics for slag foaming in EAF ...

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 ...

US20100006014A1 - Targeted reagent injection for slag ...

Alumina affects the slag fluidity, while silica in the ash has a strong impact on the silicon content of hot metal. Simultaneous injection of pulverised coal and dolomite was studied in an attempt to reduce the melting point and viscosity of pulverised coal and coke ash and to reduce the silicon content of the molten metal (Yamagata et al ...

Understanding 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 ...

Ironmaking under Indian conditions - EPrints

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 ...

RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

coke injection in to slag cleaning . coke injection in to slag cleaning. Cleaning & Melting Gold Precipitate. The first batch of slag removed was low grade and free from metallics, but the thickened slag had to be remelted and the thickening agent, being clean quartz, instead of bone ash, was easily fluxed with a little soda.

Effect of Reductants on Valuable Metals Separation and ...

The variables used were oxygen concentration in the blast, coke breeze addition and nitrogen injection stirring. In all the experiments, slag and matte co-existed.

Recycling Waste Plastics in EAF Steelmaking: Carbon/Slag ...

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…

Importance of Hearth, Dead man and Tapping in Blast ...

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 ...

Understanding Pulverized Coal Injection in Blast Furnace ...

The invention discloses a method for blast furnace stopping for heavy maintenance. According to the method, (1) furnace temperature is controlled to be 0.40 to 0.50% and alkalinity is controlled to be 1.05 to 1.15 in 8 h before furnace stopping; (2) normal stockline operation is carried out, space formed by descending of furnace charge is filled with a mixture of coke and coke nuts, top ...

Coke Rate - an overview | ScienceDirect Topics

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 …

Controlling Slag Defects, Insoluble Buildup in Melting and ...

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 ...

coke injection in to slag cleaning

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

Carbon Injection into Electric Arc Furnace Slags

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 ...

Slag Treatment in the EAF / SAF with Coke Injection

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 …

Blast Furnace Operation - an overview | ScienceDirect Topics

Apr 13, 2016· Coke rate and productivity – Increasing slag volumes needs a higher fuel input into the furnace, and where pulverized coal injection rates are already running at optimum, this results into a higher coke rate. Higher coke means introduction of higher amount of ash in the furnace resulting into further increase in the slag volume.

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