Coke Injection In To Slag Cleaning

Intensification of Processes in the Non Ferrous …

In parallel test runs in the pilot scale EAF of IME have been conducted in order to demonstrate the feasibility of a slag cleaning treatment by coke injection. It has been found that the...

WhatsApp: +86 18221755073

Blast Furnace Ironmaking

The smelting process of blast furnace is carried out in the shaft furnace of a closed countercurrent reactor and heat exchanger. The complex physical changes and chemical reactions are completed in the process of the countercurrent movement of the charge and gas in which the raw materials containing iron oxide (sinter, pellets, etc.), …

WhatsApp: +86 18221755073

Blast Furnace Granulated Coal Injection System …

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 …

WhatsApp: +86 18221755073

LATEST RESULTS OF THE INTENSIVE SLAG CLEANING …

The new intensive slag cleaning reactor is being jointly developed by SMS ... A floating coke bed on the slag surface, in contact with a graphite electrode, ... • Injection of alternative ...

WhatsApp: +86 18221755073

Copper Smelting Slag Cleaning in an Electric Furnace by …

copper slag cleaning in an electric furnace, this study proposed to use waste cooking oil as ... and coke also enters the slag phase to increase the slag amount, and the total copper loss is increased as a result. ... to inject into the slag with the carrier gas. After injection, the lance was slowly raised out of the furnace

WhatsApp: +86 18221755073

Alkaline flux dissociation in blast furnace tuyere 's nest: …

Fig. 13 depicted the phase diagram for the CaO-MgO-Al 2 O 3-SiO 2-FeO, highlighting the original slag in the coal-coke-slag at the tuyere 's nest area of the blast furnace (S0), alongside the slag with target basicities of 0.80 and 1.00 (S1 and S3, respectively), and the interface slag with target basicity of 1.20 (I5).

WhatsApp: +86 18221755073

Sustainable and Comprehensive Utilization of Copper Slag: A …

Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …

WhatsApp: +86 18221755073

Graphitization of Coke and Its Interaction with Slag in the …

A large number of graphite crystals (gray phases in Figure 1(a)) as well as slag particles (white phases in Figure 1(a)) were observed on the surface of coke samples. The graphite crystals were present in various morphologies including flake (Figure 1(b)), plate (Figure 1(c)), columnar (Figures 1(d), (e)), which are similar to the forms of natural …

WhatsApp: +86 18221755073

Cleaning Hacks with Coke: Unexpected Uses …

Coca-Cola can be a go-to solution for a variety of unique purposes. You can tenderize meat by marinating it in Coke to soften it before cooking. For culinary delight, try incorporating Coca-Cola into …

WhatsApp: +86 18221755073

Comprehensive review on metallurgical recycling and …

To decrease the copper loss, a cleaning furnace (e.g. electric slag-cleaning furnace, rotary slag-cleaning furnace) is applied after the pyrometallurgical process, …

WhatsApp: +86 18221755073

(PDF) Heavy Metal Recovery from Slags of Copper …

The first treatment improved slag cleaning directly in the submerged arc furnace (SAF) using coke injection. The benefit of this process in comparison to the traditional method is that it ...

WhatsApp: +86 18221755073

Slag loss control with Bessemer mattes

In fact, coke additions retard the converting process by consuming some of the oxygen injected. On the other hand, coke additions and nitrogen injection applied …

WhatsApp: +86 18221755073

Deadman Behavior and Slag–Iron–Coke Interaction of Low …

The ash composition and content of coke are the key factors affecting the slag–iron–coke interaction and interface phase composition. Third, the influence exerted by critical factors such as the physical properties of the carbon source, molten iron, and temperature on the carburizing behavior are analyzed, with the renewal mechanisms of …

WhatsApp: +86 18221755073

Influence of slag composition on reduction control and …

Control of copper in SCF slag Metallurgical coke for reduction reactions in the SCF is charged from the roof of the furnace to the surface of the slag. The amount of coke to charge to a slag batch is calculated using a coke-addition model, which takes into account the percentage of copper in the slag, the degree of copper reduction required, and

WhatsApp: +86 18221755073

Lime Injection in EAF | Carmeuse

Lime injection provides an ideal solution to maintaining a good y slag. It is a controlled process based on the slag conditions and is able to maintain consistent basicity, fluidity and iness. Lime and dolomitic …

WhatsApp: +86 18221755073

Efficient Recovery of Copper and Cobalt from the Matte …

eﬀects of coke, pyrite addition, and smelting tempera-ture on the recovery of copper and cobalt from matte–slag mixture. Finally, an injection simulation experiment was performed to demonstrate the feasibility of the method that injects additives into the molten slag using a designed injection device. II. MATERIALS AND METHODS A ...

WhatsApp: +86 18221755073

Comprehensive review on metallurgical recycling and …

The smelting process can be divided into three stages, namely decomposition of high-valence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig. 1).The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction …

WhatsApp: +86 18221755073

Carbon Injection into Electric Arc Furnace Slags

relationship between height, carbon injection rate and slag volumes, which predicts the critical injection rate above which ing become inefficient. The prediction of critical injection rate employs an extension of understanding mechanism ... carbon in the form of coke, char or coal, is injected into the furnace and reacts with slags ...

WhatsApp: +86 18221755073

Coke Oven Gas Injection in a Blast Furnace – IspatGuru

When using one injection lance, the maximum injecting quantity is 10 000 N cum/h. If the injection amount is higher, part of the gas will not combust in the tuyere but will enter into the blast furnace unburned. For two injection lances, the maximum injecting quantity is increased to 15 000 N cum/h, due to better combustion conditions.

WhatsApp: +86 18221755073

Evaluation of Biochar and Coke Blends for Slag ing …

Using an induction furnace to simulate EAF conditions, a synthetic slag is melted, and injection carbon is added into the slag layer. The slag ing …

WhatsApp: +86 18221755073

Ranking of Injection Biochar for Slag ing Applications …

Within 5 min after charging the nut coke sample, the slag layer had grown 369%, and reached the content capacity of the furnace before another height measurement could be taken. ... Based on the maximum slag ing, the injection carbon types were ranked from most effective to least, as follows: nut coke, bio-briquette, IIC, and loose …

WhatsApp: +86 18221755073

Alternatives of Copper (I) Oxide Reduction in a Copper Slag …

Reduction of copper oxide is an important step of metal recovery and slag cleaning in copper production. This can be achieved by slag treatment with injected …

WhatsApp: +86 18221755073

Experiences During Revival Journey of Chilled Hearth of the …

The blast furnace operating at Rourkela Steel Plant suffered the sudden collapse of the top cone of the dust catcher leading to damages to the down-comer, dust catcher and gas cleaning plant. Both the down-comers later fell damaging the cast-house and the furnace top structure. This abrupt stoppage of the furnace led to a chilled hearth …

WhatsApp: +86 18221755073

The role of slag modifiers on the selective recovery of cobalt …

The investigation into copper waste slag cleaning has shown that cobalt and copper can be recovered effectively from these slag types, and with a reasonable …

WhatsApp: +86 18221755073

Efficient Recovery of Copper and Cobalt from the …

Cleaned slag and copper–cobalt matte were obtained in the injection simulation experiment with an addition of coke and pyrite both at 2 wt pct. The XRD analysis of the smelting products is shown in Figure 7. It is observed from Figure 7(a) that the cleaned slag primarily comprises fayalite …

WhatsApp: +86 18221755073

Efficient Recovery of Copper and Cobalt from the …

The optimum slag cleaning conditions were found to be: a coke dosage of 2 pct, a pyrite dosage of 2 pct, and a smelting temperature of 1260 °C lasting for 2 hours.

WhatsApp: +86 18221755073

Effect of Coal and Coke Ash on Blast Furnace Slag …

Ash from coke and pulverized coal eventually dissolve in the final slag, affecting its properties. The purpose herein is to evaluate how BF slag composition changes when fossil-based coke is replaced with …

WhatsApp: +86 18221755073

Evolution and modification of physicochemical properties of …

A fundamental aspect of achieving cleaner production revolves around enhancing the interface between blast furnace gas and the central charge column. ... accelerated the combustion rate of pulverized coal and enhances the dissolution rate of flux into the coal-coke-slag mixture. (3) The combined injection strategy, involving both …

WhatsApp: +86 18221755073

Multi-Step Recycling of BF Slag Heat via Biomass for CO2 …

Assuming a coke consumption of 350 kg coke per tonne of hot metal and replacing it with 5% torrefied biomass injected as PC with an additional 100 m3/tHM biogas injection, the BF's CO2 emission related to the coke can be lowered by 7.9% to 108 kg/tHM. ... Slag heat recovery is an ongoing research topic and has the potential to …

WhatsApp: +86 18221755073

Coal rate injection control in a slag cleaning furnace

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, Chile. ... burner is continuously operated during the complete process to keep the bath temperature close to 1,250 qc. 2.2 Coal injection system. The coke is transported from the silos to the ...

WhatsApp: +86 18221755073