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In the first flotation stage, as much copper as possible is recovered in a rougher concentrate so that as little as possible goes to the tailings. To increase the copper recovery ... intermediate products (, cement copper or copper(I) oxide precipitates), reverts (, converter slag, refining slag, or flue dusts), and copperalloy scrap.
In the November issue of Teniente Topics, the monthly publication of the Braden Copper Co., Chile, a member of the staff briefly outlines the development of the smelter from 1909 to the present time. Metallurgical difficulties have been many, but were overcome, in spite of being 6000 miles from the base of supplies. The plant now treats 350 tons of concentrate daily, yielding 60 tons of copper ...
A flotation process in which copper ores or copper converter slags are ground and firstly have added thereto benzotriazole or alkyl benzotriazole as an activator and secondly one or more collectors selected from the group consisting of xanthates, dithiophosphates, thiocarbamate esters, dithiocarbamates, mercaptans and dixanthogens and further, if desired, a promoter such as kerosene, light oil ...
Recovery of copper from converter slags by flotation / by Edlund and Hussey.
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
Recovery of metal values from copper slags by flotation and roasting with pyrite. ... Roasting of copper converter slag containing % copper, % nickel and % cobalt with ammonium ...
MANAGEMENT OF COPPER PYROMETALLURGICAL SLAGS 543 Introduction During the last years, due to worldwide economic recession and a large inventory of stock, copper reached a historical value of US/pound in 2001. This fact meant closing down many important mining companies in the world, mainly in USA. On the other hand, strong
The recovery of copper from reverberatory furnace slag utilizing flotation has been studied. The effective factors such as particle size, pH, the amount and type of collector and additives, and flotation time were examined. The effect of cooling rate on flotation behavior of the slag was also studied.
copper slag recovery through a flotation route. Almost in all of the flotation methods used to recover copper from slags, the Cu recovery was associated with many problems such as high grade of copper in tailing. In the present study, the use of grinding time increased the copper slag recovery a lot.
Recovery of cobalt from converter slag of Chambishi Copper ... techniques, such as slag cleaning, slow cooling of the slag followed by milling and flotation, are inappropriate for cobalt recovery from converter slag [7−8].
Production of copper concentrate by flotation of smelter slag has started in 2001. Flotation concentrate goes to the Copepr Smelter once more for production of copper cathodes and the rough flotation tailings go to the flotation tailing dump. Copper recoveries in the flotation process of smelter slag reaches the value of about 45 50%.
converters is further treated in the Converter Slag Cleaning Vessel for further cobalt recovery. The final product from the converters, usually refined in Norway, contains highgrade matte which runs at 74% or 92% nickel plus copper (and 20% and 6% sulphur contents) according to customer specification2. Presently around 120 tonnes
TiJmen, F. and Bailey,, 1990. Recovery of metal values from copper smelter slags by roasting with pyrite. Hydrometallurgy, 25:317328. Sulphation roasting of primary and secondary copper slags has been carried out to facilitate the dissolution of copper, nickel, cobalt, zinc and iron.
This study was designed to recover copper and cobalt hydrometallurgically from an enriched concentrate of flotation and converter slag. Three slag samples collected from the Ergani Copper Co. of ...
Recently smelter copper slags stockpiled in dumps are being reprocessed by crushing, milling and flotation to recover entrained copper contents. This technique produces a flotation concentrate copper grade of approximately 25 to 30% with copper recoveries of between 60 and 70%. However, the
The analysis of highly reduced slags has shown that it is possible to remove virtually all of the cobalt and nickel from the olivine in the slag. Nickelcopper converter slag ''B'' MVA. Largescale testwork on converter slag was conducted, during 1994, on a MVA DCarc furnace operating at a .
Highlights Cu is efficiently leached from copperzinc waste by H 2 SO 4 solutions with Fe 3+ ions. Fe 3+ ions inhibit zinc and iron leaching from converter slag flotation tailings. Copper and zinc leaching is controlled by chemical reaction on the particle surface.
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 copperbearing mineral after a detailed mineralogy analysis via .
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Laboratory and pilot plant investigations have indicated that copper recoveries of 50% can be achieved with fine grinding and flotation of a copper reverberatory furnace slag. Microscopic and microprobe studies indicate that the recoverable copper is in the form of matte, chalcocite, and metallic copper; the percentage of copper in particles appearing to be copperfree was from – % ...
copper flotation from converter slags YouTube. Aug 25, 2016 This is a simple video slideshow, if you want to know more details, please click on our website, we will provide a p. Leaching of copper and zinc from copper converter slag flotation .
Recovery of Copper and Cobalt from Copper Slags as Selective 389 intervals. By treatment with hot water, recovery of copper and cobalt from the ore mixture was aimed selectively. 2. Experiment Sample Preparation The slag sample used in this investigation is a composite from different levels of the copper slag
Copper extraction refers to the methods used to obtain copper from its 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.
Primary Copper Smelting General1 Copper ore is produced in 13 states. In 1989, Arizona produced 60 percent of the total U. S. ore. Fourteen domestic mines accounted for more than 95 percent of the megagrams (Mg)
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