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 …
Slag from an electric slag cleaning furnace was injected with methane and air mixtures to facilitate the recovery of copper and cobalt. The effects of methane-to-air ratio, gas flow …
The electric arc furnace (EAF) has the potential to significantly contribute to the decarbonization of the iron and steel industry. However, during EAF steelmaking, carbon still needs to be injected into the molten slag to initiate slag ing, which is beneficial to the energy efficiency and protection of the furnace. To move away from …
between metal/matte and slag were investigated using high-temperature isothermal reduction followed by the drop quenching technique [30, 31]. The concentrations of metals in all phases were analyzed by EPMA. The present work helps to understand the behaviors of various ele-ments in copper smelting slag cleaning using coke and biochar.
At Hidalgo, the FSF matte containing 62----05% Cu was tapped into 25-st ladles and transferred into one of three 13 x 30 ft Pierce-Smith type converters (Pannell, 1987). …
By Dr. Fathi Habashi If organic chemistry is the chemistry of carbon, then ferrous metallurgy is the technology of carbon. Carbon in the form of coal is used in metallurgy as a fuel, but the major use is to make …
The results showed that copper and cobalt contents in cleaned slag could decrease averagely to 0.18% and 0.071% respectively after cleaning. 91.99% Cu and 92.94% Co and less than 38.73% Fe were ...
Coke oven gas mainly contains CH 4 and H 2, to make better use of coke oven gas, researchers prepared a cheap anti-sintering CaO-based adsorbent from steel slag, and was used in coke oven gas reforming for experimental research. The experimental results showed that 1 g adsorbent could capture 0.72 g CO 2, which had a …
In the trials the injection coke for slag ing was replaced by an HDPE/coke blend. About 22 heats could be evaluated in comparison to standard operation. The use of the HDPE/coke blend led to a better slag ing according to visual observations, a reduced specific energy consumption (–3%), a reduced power-on time …
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 …
1 School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China; 2 Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai Jiao Tong University, Shanghai, China; 3 School of Metallurgy, Northeastern University, Shenyang, China; Copper slag is a solid …
adding carbon/coke or by injection of various reductants (e.g., different types of oil or natural gas). Reductants are traditionally introduced into a metallurgical vessel such as a copper slag
Study of slag/char interactions is essential to understand the behaviour of unburnt char within a blast furnace during pulverised coal injection. While slag/carbon reaction kinetics have been reported in the literature, limited work is reported on study of the wetting behaviour in these systems. In the present study, wettability of slag/carbon …
Fine slag (FS) is an unavoidable by-product of coal gasification. FS, which is a simple heap of solid waste left in the open air, easily causes environmental pollution and has a low resource utilization rate, thereby restricting the development of energy-saving coal gasification technologies. The multiscale analysis of FS performed in this study …
As side effect the injected gas produces a forced flow which supports the mixing of coke, carbon monoxide gas and liquid slag. These improved process …
American Coke is made with high-fructose corn syrup and Mexican Coke is crafted with cane sugar. Cane sugar is less processed than high-fructose corn syrup, so it offers a more natural — some ...
With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 °C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of …
The tested carbon carriers were injection coke, petr ol coke, natural graph- ... nificantly higher slag volume compared to coke. The carbon pickup of the metal was also ... Clean. Prod. 2017, ...
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 ...
By Dr. Fathi Habashi If organic chemistry is the chemistry of carbon, then ferrous metallurgy is the technology of carbon. Carbon in the form of coal is used in metallurgy as a fuel, but the major use is to make coke that is an essential component of the feed to iron blast furnaces. For each ton of iron produced, half a ton of coke is used. …
The authors, in this study, have reviewed the generation mechanism, chemical/physical characteristics of the copper slag, and the main metallurgical …
A promising copper–cobalt slag cleaning technique has been proposed, involving employing gypsum wastes as a sulfurizing agent to sulfurize copper, ... Efficient Recovery of Copper and Cobalt from the Matte–Slag Mixture of ISA Furnace by Injection of Coke and Pyrite. Xu Yang Jialiang Zhang +5 authors Chengya Wang.
The electric arc furnace (EAF) has the potential to significantly contribute to the decarbonization of the iron and steel industry. However, during EAF steelmaking, carbon still needs to be injected into …
Currently tests are being carried out in a demonstration plant for the deep slag cleaning to extremely low copper contents in the slag at Anglo American's Chagres smelter in Chile. View Show abstract
some slag formation problems during test, e.g. high and variable resistance to gas flow in the blast furnace, very high viscous slag in the slag runner etc. Jitang Ma [4] has pointed out that the slag formation problem was caused by formation of an excessive basic slag at the cohesive zone, where the top-charged fluxes dissolved into the
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 …
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 reducing agents.
slag. The depth of lance immersion in slag was around 40 mm below the slag surface. Procedure . The crucible was charged with 500 grams of slag and heated in the furnace under a cover of high purity argon. When the desirable temperature was reached, the molten slag was homogenised by bubbling argon through an alumina lance for ten …
Injection Coke is product derived from Metallurgical Coke. The technique of ing Slag using Carbon in the EAF is used to increase productivity, lower operating costs and increase the quality of steel produced. It is also used as deoxidizing agent. Below are the materials used for manufacturing Injection Coke - 1.
