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3 edition of Recovery of Iron and Copper From Copper Smelting Furnace Slags by Carbon Injection found in the catalog.

Recovery of Iron and Copper From Copper Smelting Furnace Slags by Carbon Injection

United States. Bureau of Mines.

Recovery of Iron and Copper From Copper Smelting Furnace Slags by Carbon Injection

with an Appendix on Evaluation of Granulated Iron as A Precipitant For Copper.

by United States. Bureau of Mines.

  • 301 Want to read
  • 26 Currently reading

Published by s.n in S.l .
Written in English

Edition Notes


SeriesReport of investigations (United States. Bureau of Mines) -- 8697
ContributionsPaige, J., Paulson, D., Hunter, W.
ID Numbers
Open LibraryOL21738401M

Flash smelting (Finnish: Liekkisulatus, literally "flame-smelting") is a smelting process for sulfur-containing ores including process was developed by Outokumpu in Finland and first applied at the Harjavalta plant in for smelting copper ore. It has also been adapted for nickel and lead production.. A second flash smelting system was developed by the International Nickel. The blister copper is more than 98 percent pure, but it contains too much oxygen. The anode furnace blows natural gas into the melt to burn off the first, a tall yellow flame billows from the top of the anode furnace, but after a few hours it becomes a beautiful blue-green when most of the oxygen in the copper has been burned away. the furnace. From the. bin. the prepared mixture is charged into a rotat --', ~ng. furnace through an iron chute. ~he. smelting is done in this ~otating, cylindrical, fire-bricklined furnace, of 2 I/2. to. apprextmate­ Ly. 3ton capacity, by. pulverized charcoal ground in a tube mill to such.. fineness:that 96 per cent will pass mesh. The Egyptian copper smelting furnace was filled with a mixture of copper ore, charcoal and iron ore to act as a flux. It was blown for several hours by foot or hand bellows. By the end of the smelt the copper had separated from the slag, which was tapped off. SOURCE Robert Raymond,Out of tfre Fjery Furnace (University Park, PA The Pennsylvania.

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Recovery of Iron and Copper From Copper Smelting Furnace Slags by Carbon Injection by United States. Bureau of Mines. Download PDF EPUB FB2

Recovery of iron and copper from copper smelting furnace slags by carbon injection. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Paige, J.I. (Jack I.). Recovery of iron and copper from copper smelting furnace slags by carbon injection.

Results of the tests show that 76 to 89 pct of the copper and up to 48 pct of the iron contained in the smelting furnace slag were recovered in a metallic phase, while 56 to 82 pct of the carbon injected into the system was utilized as the reductant.

Recovery of iron and copper from copper smelting furnace slags by carbon injection [Paige, J. I.] on *FREE* shipping on qualifying offers. Recovery of iron and copper from copper smelting furnace slags by carbon injectionAuthor: J. Paige. Recovery of Iron from Copper Flash Smelting Slags Figure 3 shows the rapid decreasing of copper content in the slag during the first 15 min-utes with the graphite rod introduced into the melt, while the iron concentration is main-tained almost constant over same period of.

copper smelting industry, the treatment of copper smelting slag also becomes an issue, and about tons of slag is generated from the process of smelting 1 ton of copper.

[1]. In Korea, abouttons of copper is manufactured annually, indicating that about million tons of copper smelting slag will be generated annually []. Abstract. Aiming at the recovery of copper from smelting slag, a flotation approach was studied.

It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via polarizing microscope, SEM and : Jiaqi Fan, Hongxu Li, Liangtian Wei, Chao Li, Shi Sun.

Effect of carbon addition on recovery of copper in alloy at K. 40 ~- > a W 0 u W 99 10 ~. ~/O 0 O % Carbon O % Carbon 12 14 16 2 4 6 8 10 REDUCTION TIME, hours Fig. Effect of carbon addition on recovery of arsenic in alloy at K.

Cited by: 2. Smelting is a process of applying heat to ore in order to extract a base is a form of extractive is used to extract many metals from their ores, including silver, iron, copper, and other base ng uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal base behind.

To recover iron from copper smelting slag using carbon, Heo et al. [14] also found that the iron recovery could be increased by the addition of CaO if the CaO content was less than 20 wt.% but.

Smelting furnaces produce liquid Cu–Fe–S matte (usually 60–70% Cu), which must have its sulfur and iron removed to make copper metal. This is most frequently done in submerged-tuyere Peirce–Smith (Fig. 4) and Hoboken converting furnaces using air (often slightly O 2-enriched) as the process is similar to submerged-tuyere smelting except that the feed is molten matte, not.

Modern copper smelters use processed copper ore fed into a flash furnace, typically fired by oxygen which produces blister copper, being further processed in a converter furnace. Molten copper is poured from here into rectangular moulds, the resulting ingots subjected to electrolysis producing a metal of % purity.

Copper can be recycled indefinitely without the base metal being compromised. Figure Low-grade copper recovery electrolyte in the refinery cells or sold as a product.

Smelting of low-grade copper scrap begins with melting in either a blast or a rotary furnace, resulting in slag and impure copper. If a blast furnace is used, this copper is charged to a. A typical pyrometallurgical copper smelting process, as illustrated in Figureincludes 4 steps: roasting, smelting, concentrating, and fire refining.

Ore concentration is roasted to reduce impurities, including sulfur, antimony, arsenic, and lead. The roasted product, calcine, serves as a dried and heated charge for the smelting furnace.

The reductive-sulfurizing smelting treatment of copper-cobalt smelter slag was carried out under Ar atmosphere in a vertical MoSi 2 tube furnace. As an experimental procedure, g smelter slags were mixed with the given amount of coke and pyrite and/or slag modifier (CaO). Corundum crucible ( ml, 73 mm outside diameter, 43 mm inside diameterFile Size: 1MB.

Arslan and Arslan [7] focused on the recovery of copper, cobalt, and zinc from copper smelter and converter slags by roasting with sulfuric acid. This study used leaching experiments to. The furnace can be designed with effective working volume minimal m3, suitable for the recovery of anode slime, PM-containing smelting slag, lead refining dross and all kinds of dust.

It can also treat secondary material like scrap copper, WEEE/PCB/IC and etc. The early development of the reverberatory furnace for smelting copper ores was the work of the Welsh smelters, particularly those of Swansea.

The first record of a reverberatory furnace is made by Jars, who states that copper-smelting was effected in reverberatory furnaces at Middleton-Tyas, in Yorkshire, England. The first patent, of any importance, for improvements in reverberatory furnaces.

Mini scale copper scrap/wire melting smelting converting and refining furnace and eletro-refining process to produce copper cathode by Metalcess.

In the quest to achieve the highest metal recovery during the smelting of copper concentrates, this study has evaluated the minimum level of soluble copper in iron-silicate slags. The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of Fe/SiO2 ratios in the slag.

All experiments were carried out under conditions where Cited by: The Enviroplas process involves the smelting of Electric Arc Furnace (EAF) dust, Lead Blast Furnace (LBF) slag or Neutral Leach Residues (NLR) in a DC arc furnace and the subsequent recovery of the volatilised zinc in an ISP Lead Splash Condenser (LSC) as Prime Western grade metal.

To date, more than tons of LBF slag and tons of. The liquid copper can be fed to the next process step by means of a ladle or launder. The hearth-shaft furnace is additionally equipped with a hearth for holding, deslagging, and further treatment of the liquid copper.

Thus, scrap of low quality can also be used. The molten copper is transferred via launders to refining furnaces.

@article{osti_, title = {Nontraditional carbon reducing agents in smelting FMn78B ferromanganese and valuable manganese slag}, author = {Kravchenko, P A and Sezonenko, O N and Bespalov, O L and Kornienko, S N and Belikov, S D and Gasik, M I}, abstractNote = {The smelting of FeMn78B ferromanganese (% P) by a flux-free method, with the production of valuable slag (36.

SIWIEC et al.: BEHAVIOUR OF IRON DURING REDUCTION OF SLAG OBTAINED FROM COPPER FLASH SMELTING As shown in previous studies [], intensifica-tion of iron oxide reduction does not take place until the copper content in the slag id decreased to less than 0,6 %mass, which was successfully confirmed by the obtained results.

In the smelting of gold and silver ores carrying no lead or copper to form either a lead bullion or a copper matte, but containing iron sulphide, the electric furnace might be used in connection with an air blast for oxidation of the iron sulphide, an iron matte being used as a collecting agent for the gold and silver; a fair recovery can be.

MANAGEMENT OF COPPER PYROMETALLURGICAL SLAGS Introduction During the last years, due to world-wide economic materials from copper slag. Recovery of copper, molybdenum, precious metals, silica and iron, flash smelting furnace, Teniente converter, Peirce-Smith converter, Anode and fire refining furnaces, and File Size: KB.

Mintek has been working on the recovery of cobalt, and the associated valuable metals, from slags, sinceusing DC-arc furnace technology to effect selective carbothermic reduction of the oxides of cobalt, nickel, copper, (and zinc, where present), while retaining.

Copper slag is composed of iron silicate obtained by smelting copper concentrate and silica flux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix to decrease the volume of dumped slag.

The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing % copper and g/t silver is available to recovery. The effective factors such as particle size, the amount and type of collector were examined. The combination of the collectors was also examined.

With the process utilized in this work, a copper concentrate of % Cu with Author: Xian Xie, Kai Hou, Xiong Tong, Yong Cheng Zhou, Xiang Wen Lv. In Britain there has been found in Anglesey a number of circular cakes of copper which were cast in Roman times.

These cakes were 11 to 13 in. in diameter, 2 to 2 1 /2 in. deep, and weighed from 30 to 50 lb. apiece. They were formed 'by pouring the metal into a shallow tray.

A comparatively smooth band, which is always found on the upper. TiJmen, F. and Bailey, N.T., Recovery of metal values from copper smelter slags by roasting with pyrite. Hydrometallurgy, Sulphation roasting of primary and secondary copper slags has been carried out to facilitate the dissolution of copper, nickel, cobalt, zinc and iron.

That is, higher copper and iron extractions were observed with the slag rather than slag flotation tailings. Thus, the maximum copper and iron extractions achieved with the slag were % and %, respectively, as opposed to the slag flotation tailings where the maximum copper and iron extractions were % and %, respectively.

In brief, it is difficult to recover copper and iron in the slag technically, effectively and economically by traditional separation technologies, and much latent heat is wasted when discharging the molten slag from the furnace at – C to slowly cool for recovery copper as well as other non-ferrous metals by flotation and heating theFile Size: 5MB.

The smelting process of copper smelting furnace is beneficiation, its purpose is to concentrate all the gangue content in slag, and useful metal. reduction smelting is being carried out at NML, Jamshedpur to recover copper, nickel, cobalt and manganese.

When carbon is added to the charge, various metallic elements are reduced to different extent, at a given level of carbon addition during smelting.

This behavior allows a reasonable Tech - 5/1. smelting process for cobalt recovery from converter slag is studied in laboratory scale. The converter slag is obtained from the Chambishi Copper Smelter in Zambia, in which copper concentrate with about 35% (mass fraction) Cu and % Co is smelted using Isasmelt’s top-submerged lancing process followed by converting in Peirce-Smith converter.

The most effective means for the recovery of metals Molten slag may be fed directly to the MVA furnace from a pre-melting When treating furnace slag.

The ore is loaded into a blast furnace along with measured quantities of coke and limestone. Hot combustion air is supplied to the furnace and some form of fuel used to raise the temperature.

The iron is reduced from the ore by carbon in the coke, the limestone aiding slag separation from the molten iron. The slag and molten iron are tapped off from the bottom of the furnace, the slag being. Reductive Smelting for the Recovery of Nickel in a DC Arc Furnace Proceedings of EMC 3 Application to PGM Smelting Mintek’s ConRoast process [3] involves smelting low-sulphur concentrates in a DC arc furnace, and collecting the platinum group metals (PGMs) and valuable base metals in.

A novel hydrometallurgical method was developed to recycle valuable metals of Si, Fe and Cu from copper slag. The leaching rates of 98%, 99% and 91% for SiO2, Fe and Cu, respectively, were obtained under optimized parameters: solid-to-liquid ratio is ; concentration of hydrochloric acid is 35%; the reaction time is 2 hours and at ° by: 8.

Reverberatory Furnace Smelting The reverberatory furnace dominated copper matte smelting for much of the s, because it was an excellent process for smelting fine concentrate from flotation.

It is a fossil fuel fired hearth furnace for smelting concentrate and producing copper matte. The reverbs began to File Size: KB. AbstractThe effects of the simultaneous injection of MgO and magnesite powder on the combustion of coals, properties of the primary slag, and softening-melting properties of the burden were investigated.

There were four aspects to the results that we obtained. First, MgO showed catalytic activity for dehydrogenation and carboxyl group removal from coal; as a result, with increasing MgO, the Author: Shujun Chen, Qing Lyu, Jianpeng Li, Xiaojie Liu, Kai Liu.separated into slag and pig iron (Fe-Cu) for recovery by reducing them to Fe-Cu alloy.

In the experimental process, the copper slag and the reducing agent carbon were mixed at a certain ratio and then charged into the crucible, and the waste copper slag was reduced in the high frequency induction furnace.copper from the reverb to the rotary. During transfer, the copper loses some of its superheat.

The refining furnace maintains melt temperature at °C (°F) by using a single air-fuel burner positioned in the upstream endwall of the furnace. Next, the submerged injection of gas mixtures refines (oxidizes and reduces) the molten Size: KB.