direct to blister copper slag crushing

direct to blister copper slag crushing

Ammonia leaching of slag from direct-to-blister copper ...

Ammonia leaching of slag from direct-to-blister copper smelting technology ... An alternative to the currently used method of processing flash smelting slag could be its crushing, leaching under ...

(PDF) Fluxing options in the direct-to-blister copper smelting

Solubility of oxygen in blister copper as a function of the smelting temperature, in equilibrium with a calcium ferrite slag containing 18% lime and the blister copper has 0.25% [S]

Blister Copper - an overview ScienceDirect Topics

Blister copper. The unrefined copper of about 98.5% purity produced from the converting step of copper smelting. Calcium ferrite slag. A slag based on CaO that contains FeO and Fe 2 O 3, which can absorb highly oxidized iron and thus is used in continuous copper converting under higher oxygen partial pressures than in conventional converting processes. ...

12.3 Primary Copper Smelting

iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is converted to copper sulfide. The copper sulfide is removed and the remaining slag is discarded. Converting produces blister copper by eliminating the

flow diagram of the direct outotec copper flash smelting ...

Process for copper converting Outotec Oyj . The process for converting a copper sulphide matte to blister copper is achieved by adding the copper sulphide matte and flux to a suitable agitated slag phase and injecting from a discharge tip at the lower end of a topsubmerged lance an oxidizing gas suitable for reacting with the matte to produce blister copper which forms or adds to a continuous ...

Biorecovery of copper from converter slags: Slags ...

Jun 01, 2009  The heaviest molten phase obtained is periodically tapped from the furnace and sent to a converter for its conversion to blister copper. 2. Slag is subjected to cooling/solidification, crushing, grinding and flotation to obtain a 30 to 60% Cu-concentrate (Rao and Nayak, 1992).

(PDF) THE DEVELOPMENT OF NON-WASTE TECHNOLOGY IN

The solidification of the slag in ladles follows a crushing and classification procedure. ... have clearly shown that these typical Direct-to-Blister slags remain completely in the liquid state down to temperatures below 1300 0 C.The purpose of electric furnace slag cleaning is to reduce oxidized copper to metallic copper and trivalent iron to ...

Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

Ferric leaching of copper slag flotation tailings ...

Jan 01, 2009  Copper can be recovered from the slags by froth flotation after cooling, crushing, and grinding. The obtained Cu-concentrate is sent to the pyrometallurgical process. If grinding is not fine enough for efficient flotation, copper is lost in tailings. In this paper, the ferric leaching of slag flotation tailings is studied.

Extractive Metallurgy of Copper ScienceDirect

The products of the process are: Molten blister copper (99% Cu, 0.02% S and 0.6% O), which is sent forward to fire refining for final S and O removal, then anode casting: molten Fe-silicate slag (4–8% Cu), which is sent to Cu recovery, then discard; SO 2-bearing offgas, which is treated for heat, dust, and SO 2 capture. All of the heat for ...

Direct-to-blister smelting of copper concentrates: The ...

The freeze lining microstructure forming on water cooled steel surface in a high-silica, slag cleaning furnace slag of a direct-to-blister copper smelter is mostly glassy or amorphous. It contains ...

Leaching of direct-to-blister copper flash smelting slag ...

IntroductionIn flash smelting direct-to-blister furnace concentrates contain mainly chalcocite (Cu 2 S) and bornite (Cu 5 FeS 4 ) 1) . The quality of the copper produced depends on the content of lead in it, the concentration of which should be lower than 0.3%, so that the product meets the quality of blister copper.

flow diagram of the direct outotec copper flash smelting ...

Process for copper converting Outotec Oyj . The process for converting a copper sulphide matte to blister copper is achieved by adding the copper sulphide matte and flux to a suitable agitated slag phase and injecting from a discharge tip at the lower end of a topsubmerged lance an oxidizing gas suitable for reacting with the matte to produce blister copper which forms or adds to a continuous ...

MICROSTRUCTURE CHARACTERISATION OF FREEZE

lining microstructure forming on water cooled steel surface in a high-silica, slag cleaning furnace slag of a direct-to-blister copper smelter is mostly glassy or amorphous. It contains 5-30 µm magnetite crystals, very small and larger copper droplets as well as small magnetite and silicate nuclei embedded in the glassy silica-rich matrix.

(PDF) The effect of copper slag recovery on ...

The effect of copper slag recovery on hydrometallurgical cut-off grades considering the environmental aspects ... Crushing, agg lome ration, a ... from the slag of the direct-to-blister flash ...

(PDF) Leaching of lead and copper from flash smelting slag ...

As a direct-to-blister copper flash smelting slag contains important levels of copper (14%) and lead (2–4%) it is subjected to a process of high temperature reduction.

Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

Extractive Metallurgy of Copper

1.2.4. Direct-to-Copper Smelting 7 1.2.5. Fire Refining and Electrorefining of Blister Copper 7 1.3. Hydrometallurgical Extraction of Copper 8 1.3.1. Solvent Extraction 8 1.3.2. Electrowinning 9 1.4. Melting and Casting Cathode Copper 10 1.4.1. Types of Copper Product 10 1.5. Recycle of Copper and Copper-Alloy Scrap 11 1.6. Summary 12 ...

Energy and Environmental Profile of the U.S. Mining

Tailings from flotation of copper slag are a second RCRA special waste. Traditionally, reverberatory furnaces have been the most common furnaces used ... sulfur and convert the copper sulfide to blister copper, which contains about 99 percent copper. ... Crushing and grinding is the most energy intensive.

Characteristics and utilisation of copper slag—a review

Typically, about 2.2~3.0 tons of copper slag generate per ton matte produced (Gorai et al. 2003), and the copper slag commonly contains about 30~40 wt% of Fe and 0.5~2.1 wt% of Cu, which are close ...

blister card crushing machine for recycling ghana

namibian companies involved in slag crushing. namibian companies involved in slag crushing direct to blister copper slag crushing Sai. direct to blister copper slag crushing; mobile grinding mill in hibbing Adams such as changes in gold price ore grade or discovery for more. Copper Slag

Extractive Metallurgy of Copper ScienceDirect

The total direct plus indirect cost of producing electrorefined copper from ore either by conventional mining, concentration, smelting, or refining is in the range of $1.5 to $2.2 per kg of copper, whereas the cost of producing electrowon copper cathodes from oxide and chalcocite ores is $0.7 to $1.5 per kg of copper.

WO2015143574A1 - Method for recovering copper, molybdenum ...

The invention relates to a method for recovering copper, Mo, Fe, Pt, Au, Ag, Zn, Ni, Sn, Co, U, Re, Ge, Se, rare earth metals and any other metal from the Periodic Table of the Elements present in the slag content, obtained from the slag produced by copper smelting such as in the fusion and conversion of slag, from reverberatory furnaces, and especially the Teniente converter and Pierce-Smith ...

(PDF) THE DEVELOPMENT OF NON-WASTE TECHNOLOGY IN

The solidification of the slag in ladles follows a crushing and classification procedure. ... have clearly shown that these typical Direct-to-Blister slags remain completely in the liquid state down to temperatures below 1300 0 C.The purpose of electric furnace slag cleaning is to reduce oxidized copper to metallic copper and trivalent iron to ...

Kinetics of Copper Reduction from Molten Slags

25 wt. % in direct-to- blister smelting. Hence the recent trends of continuous copper smelting invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. Reduction of iron oxides from slags using carbon as a reductant in the form of dissolved carbon

OUTOTEC FLASH SMELTING TECHNOLOGY

Outotec Direct Blister Flash Smelting for copper With this process, blister copper is produced directly in a flash smelting furnace without the need for separate converting phases and ladle transportation. This method opens up the possibility to use different raw materials and optimize plant layout while minimizing capital investment, operating ...

Environmental Guidelines for Copper Smelting

converter slag) and to form blister copper. Blister copper is further refined as either fire-refined copper or anode copper (99.5% pure copper), which is used in subsequent electrolytic refining. In fire-refining, molten blister copper is placed in a fire-refining furnace, a flux may be added and air is blown

Energy and Environmental Profile of the U.S. Mining

Tailings from flotation of copper slag are a second RCRA special waste. Traditionally, reverberatory furnaces have been the most common furnaces used ... sulfur and convert the copper sulfide to blister copper, which contains about 99 percent copper. ... Crushing and grinding is the most energy intensive.

Copper Smelting Chemistry Tutorial - AUS-e-TUTE

The impure copper produced by the converter is referred to as blister copper because bubbles of sulfur dioxide gas on the surface of the copper look like blisters. Blister copper contains 97-98% copper. Impurities in blister copper can include gold, silver, antimony, arsenic, bismuth, iron, lead, nickel, selenium, sulfur, tellurium and zinc.

(PDF) THE DEVELOPMENT OF NON-WASTE TECHNOLOGY IN

The solidification of the slag in ladles follows a crushing and classification procedure. ... have clearly shown that these typical Direct-to-Blister slags remain completely in the liquid state down to temperatures below 1300 0 C.The purpose of electric furnace slag cleaning is to reduce oxidized copper to metallic copper and trivalent iron to ...

Flash Furnace - Metso Outotec

The Metso Outotec Flash Furnace is a large stationary vessel where sulfuric copper or nickel concentrates are smelted to molten matte or blister copper and slag. The furnace is often water cooled through copper cooling elements tailored for the application and

US20100242682A1 - Method and system of dry processing of ...

A method for processing converter slag produced in copper smelting includes feeding the converter slag into a reducing furnace, reducing zinc and copper contained in the converter slag by heating and removing the reduced zinc through volatilization in a reducing furnace. The slag discharged from the converter is transformed into a raw material for iron making.

THE EFFECT OF COOLING RATE OF SLAG FROM PRIMARY

Apr 05, 2015  Mihajlović - The effect of cooling rate of slag from primary copper production 129 In Table 1 an overview is given of copper content in flotation tailings in smelters which process slag by flotation. Table 1. Copper content in flotation tailings in different smelters Smelter %Cu Almalykskii, Russia 0,27 Garfield, USA 0,48 Guixi, China 0,50

blister card crushing machine for recycling ghana

namibian companies involved in slag crushing. namibian companies involved in slag crushing direct to blister copper slag crushing Sai. direct to blister copper slag crushing; mobile grinding mill in hibbing Adams such as changes in gold price ore grade or discovery for more. Copper Slag

(PDF) Beneficiation of copper slag - ResearchGate

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe ...

phosphor copper slag ball mill - VETURA Heavy Machinery

direct to blister copper slag crushing. Copper slag that is derived by smelting of copper concentrates in a reverberatory furnace is referred to as reverberatory copper slag1 Phosphorus Slag Phosphorus slag is a byproduct of the elemental phosphorus refining process. More Details

Behavior of copper and lead during mineralurgical and ...

During direct-to-blister smelting of copper concentrates, slag is formed in which the copper content reaches up to 15%. In addition, it may contain up to 4% Pb. The recovery of copper and, by the way, other valuable elements contained in the slag takes place in an electric furnace.

SUSTAINABILITY OF COPPER SLAG PROCESSING FROM

Copper Slag Copper slag, which is produced during pyrometallurgical production of copper, contains a significant amount of Cu together with trace amounts of other heavy metals. According to Gorai et al. (2003), about 2,2 tons of copper slag is generated for every ton of copper