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Poor copper concentrate grade when processing high proportions of supplementary, West Dome, ore – due to lower liberation of copper sulfi des as compared to the primary ore source, Main Dome. Copper regrind – A copper regrind mill and preclassifi cation circuit for the regrinding of copper rougher concentrate (ISAMill M3000 – 1.1 MW)
Both sections consist of three bulk copper and molybdenum rougher flotation lines, and the rougher concentrate is transferred to a regrinding stage. In 2015, personnel from Buenavista del Cobre and Outotec conducted a process assessment of the rougher flotation stage.
and commissioned in November 2008. During the initial stages of sulphide operation, high copper (Cu)-low zinc (Zn) ore was fed to the plant. Marketable copper concentrate at 91-95% recovery was produced utilizing a high-pH bulk sulphide rougher flotation and 2 …
Serrote will produce an average of about 22 000 t/y of copper equivalent over an initial 14-year mine life from a low-strip, openpit mine supplying a 4.1 …
the rougher/scavenger flotation circuit consistently recovers 91% of the total copper sulphide minerals, with the greatest loss typically being from the >75µm and <7µm size fraction. the enrichment ratio on the rougher/scavenger flotation stage is around 4.5 to 5.0. the tailing from the rougher/scavenger flotation circuit is sent to the final
After the rougher flotation concentrate is reground it is cleaned twice in additional "Free-Flow" Flotation Machines with the recleaned concentrate going to final concentrate filtration or, as the metallurgy dictates, to a copper-moly separation circuit.
The copper-gold concentrate will be thickened in a 21m-diameter high rate thickener to produce thickener underflows which will undergo concentrate pressure filtering to reduce water content. This copper-gold concentrate will be stockpiled before transportation to the port at Stewart, British Columbia, for export. The copper rougher concentrate ...
more zinc would be introduced into the copper concentrate due to sliminb. COPPER FLOTATION The rougher copper section consists of 8 - #18 Denver Sub A cells. The cleaning section consists of 2 - #15 Denver Sub A oells. The feed, after. a condi tioning period of 10 minutes, is taken into #1 rougher cell. The product from the first 3
EC-700 In-Line Flash Flotation Concentrate Sampler: In Line (4") New: EC-701 Copper Rougher Flotation Feed Sampler: In Line 10" New: GO-302 Ball Mill Ball Bucket: Modif. By Louvicourt GO-303: SAG Mill Ball Bucket Modif. By Louvicourt
Froth flotation is a process for selectively separating of hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.
The valuable masse in the concentrate or the feed is calculated by multiplying the concentrate mass (or sample masse) by the grade as in the grade formula above (1). Then Rc= 100* (Mcc*Gc')/ (Mt*Gc) (3) In practice, we take one sample or more from the concentrate, and we prepare it for assays to get the grade, then we calculate the recovery.
The average copper recovery in the rougher stage was 82.83%, with average copper recovery in the first to fourth units of the rougher being calculated as 60.2, 10, 7.5, and 5.1%, respectively, indicating the large contribution of the concentrate from the first unit of the rougher as compared with those of other units.
Common applications include a thickener with underflow pumps that are typically centrifugal and transfer pumps that can be either centrifugal or positive displacement. ... (waste) from the rougher and scavenger cells flows to a tailings thickener to recover water for the process. ... filter dewaters the copper concentrate further before ...
These tailings contained 0.02% sulfide copper minerals and 0.08% oxidized copper minerals; so that the overall recovery of copper in the rougher concentrate was 91.5% of the copper content of the ore, made up of 97.9% by weight of the sulfide minerals and 67.9% by weight of the oxidized minerals of the ore. EXAMPLE II
A rougher concentrate is together produced by two parallel rougher flotation banks. The rougher concentrate is processed and upgraded through a two-stage flotation clean circuit. A bulk concentrate with both copper and molybdenum is thickened to separate the two minerals using differential flotation.
process at a concentrator. 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 rate, often these tailings are leached with sulfuric acid. After regrinding, the rough concentrate is …
The flotation process aims to float a sulphide concentrate to recover the major copper and gold bearing minerals (the circuits consist of rougher, scavenger, cleaner, cleaner-scavenger and recleaner treatment stages). The final concentrate produced for each module assays 36% to 40% copper and is pumped to a concentrate thickener.
Trans. Indian Inst. Met. Vol. 47, Nos.2-3, April-June 1994, pp. 89-101. QUALITY IMPROVEMENT OF COPPER CONCENTRATES BY COLUMN FLOTATION S. Prabhakar, G. Bhaskar Raju ...
Most of the pyrite was recovered into the concentrate by entrainment.Non-sulphide gangue was the main dilutant in the concentrate, contributing 29.5% of the total concentrate mass in the first minute and 62.4% after 10 min. The entrained non-sulphide gangue in the collectorless flotation rougher concentrate should be relatively easier to reject ...
Kakula's expected average ore-feed grade is 6.6% copper, and mine-site cash cost of US$0.48/lb copper, in the first five years of operation. To date 671,000 tons grading 3.36% copper, including 116,000 tons of high-grade ore grading 6.08% copper, has …
pb rougher concentrate tank pump pp-813 pb scavenger concentrate tank pump bp-814 cu concentrate pump box pp-814/815 cu concentrate pumps copper concentrate storage zinc concentrate storage fp-601/602 cu concentrate pressure filter pp-803/804 cu concentrate pp-801/802 filter feed pumps cu thickener u/f pumps
CS060 - 1-FC-021 - Nickel Rougher Flotation Cell 1. CS061 - 134-FC-022 - Nickel Rougher Flotation Cell 2. ... CS078 - 134-HP-022 - Nickel Scavenger Concentrate ... CS079 - 134-HP-023 - Nickel Scavenger Tailings Hopper. ... 05 Concentrate Thickening. 03 Copper Flotation and Regrind. 02 Milling. 01 Primary Crushing and Reclaim. 11 Misc. Forms ...
South32 has entered into two binding conditional agreements with Sumitomo Metal Mining and Sumitomo Corporation (collectively Sumitomo) to acquire a 45% interest in the Sierra Gorda copper mine in Chile's prolific Antofagasta copper region for an upfront cash consideration of $1.55 billion.
Copper complexes that can be present in cyanide liquors include Cu (CN) 2 −, Cu (CN) 3 2 −, and Cu (CN) 4 3 − with the proportions dependent on the pH, copper concentration, and free cyanide concentration. The main issue facing the process engineer is the fact that minimization of cyanide consumption is favored by the formation of species with a low copper:cyanide mole ratio, e.g., Cu ...
Copper–gold ores Tailings abstract Results of copper–gold rougher-flash flotation in a three-product column (3PC) are presented, and sepa-ration parameters are compared with results of an existing industrial small mill (rougher–scavenger– cleaner treating 100–120 t/day). This 3PC cell yielded 2%–5% richer Cu and Au concentrate ...
mill (13'x23', 1.25 MW) is used to regrind the rougher (and cleaner scavenger) concentrate to a D80 of 106 µm for cleaning. The plant, commissioned in early 2009, is now treating a higher tonnage (3,200 t/h) than the nameplate design. The Copper concentrate produced from the plant (typically
The aim for the copper circuit is the recovering 80% of copper in feed at a Cu final concentrate grade of 23% Cu with ≤1% Ni. The roughing stage has the TC500 cell (500 m 3), which produces a rougher concentrate of about 15% Cu.The rougher tailings reports to scavenger cells for further recovery of Cu into the cleaning circuit.
Acopper rougher concentrate containing 10,0percent copper and 20,0per cent lead had been planned, but, during this initial period, the rougher concentrate averaged 12,7percent copper and31,4percentlead.A profile ofcopper and lead contents down the rougher bank showed noselectivity between copper reporting in thefirstrougher cellsandlead inthe ...