In the furnace, the concentrates are instantly oxidized, after which they melt and separate by their own reaction heat into copper matte with a grade of 65 and slag consisting of iron oxide, silica, and other compounds. Reaction in the flash smelting furnace. CuFeS 2 SiO 2 O 2 Cu 2 SFeS 2FeOSiO 2 SO 2 Reaction heat.
energy, and the melting of the solids. The products of flash furnaces are matte of 45 to 65 percent copper, molten slag containing iron oxides plus gangue and flux oxides, and offgas. The slag typically contains as much as two percent copper. This slag can be recycled to the flash furnace, or
a copper concentrate, b silica flux, c air, d industrial oxygen. The reactions in the flash furnace may be represented by equations of the type Reactions 1 and 2 are strongly exothermic. They provide most or all of the energy for heating, melting and superheating the furnace products.
The copper concentrate production process does not involve any chemical modification of the ... Not applicable inorganic solid melting above 300 C Vapour density . Not applicable inorganic solid melting above 300 C Relative density . Range from 3.5-4.7 gcm3 at 20 C from 18 copper concentrates
NIOSHOSHA. APF 5 Any quarter-mask respirator. Click here for information on selection of N, R, or P filters.. APF 10 Any particulate respirator equipped with an N95, R95, or P95 filter including N95, R95, and P95 filtering facepieces except quarter-mask respirators. The following filters may also be used N99, R99, P99, N100, R100 ...
Smelting low Pyrite Copper Concentrate. ... The primary purpose of the research covered by this report was the development of a method for induction melting titanium in a water-cooled copper crucible. The results reported represent findings obtained during the melting of a minimum number of ingots therefore, only tentative conclusions can be ...
Copper concentrate is the first commercial product of the copper production line and is composed of approximately equal parts of copper, iron and sulfide. Concentrates are the raw material for all copper smelters, which by processing it obtain an impure form of metallic copper, anode or blister copper, which is later used to produce high purity ...
Jan 31, 2018 An experimental study was conducted to elucidate the evolution of size and chemical composition of La Caridad copper concentrate particles during oxidation under simulated flash smelting conditions. Input variables tested included particle size and oxygen concentration in the process gas. The response variables included the size distributions, chemical composition, and morphology of
Aug 23, 2017 Copper concentrate Cu 30, S 30, Fe 25, Gangue minerals 15 is fed into the smelting furnace through a lance pipe with oxygen enriched air, is
May 22, 2018 Smelting gold has a long history among humans. With a few simple tools, anyone can do it at home. First, a person needs to make a forge, then they need charcoal, oxidizing chemicals, and a
Jul 03, 2017 Health Safety and Environment. In 2012 and 2013 the RTK Smelter set a new safety record, achieving 960 days without a Lost Time Injury. In total, 3.6 million man-hours were worked without an LTI during 20122013 and a new All Injury Frequency Rate AIFR record low of 0.27 was established.
made from the copper concentrate with the addition of the coal. ... re-melting of the briquettes containing Cu concentrate and coal. otation concentrate is comparable to the values obtained in.
Copper processing - Copper processing - Roasting, smelting, and converting Once a concentrate has been produced containing copper and other metals of value such as gold and silver, the next step is to remove impurity elements. In older processes the concentrate, containing between 5 and 10 percent water, is first roasted in a cylindrical, refractory-lined furnace of either the hearth or ...
The copper concentrate is selectively oxidized in the bath of the ISASMELT furnace in such a way to liberate part of SO 2 and the exothermic heat from reactions inside the furnace raises the temperature of the constituents above their melting point. The instantaneous smelting reaction forms molten mass of Cu 2S, FeS, FeO and Fe 30
The mathematical models of the melting process, the optimization criterion and constraints on the input and controlling variables and the values of the conductivities of the melt under the electrodes and the phase voltages are used to solve the optimization problem of the electrical regime of the electric furnace. In this paper the optimal variant of the electrical regime of the furnace for ...
CONFERENCE PROCEEDINGS Papers Presentations Journals. Advanced Photonics Journal of Applied Remote Sensing
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 oxygen.At 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 .
Copper concentrate is a dark, sand like ore. It is reminiscent of fine sea sand. The material consists of a mixture of copper and iron sulphides and other oxide minerals. The melting point is approximately 1080 degrees Celsius. 10. STABILITY AND REACTIVITY The product is stable under normal conditions.
melting point of 1,083 0c, a boiling point of 2,595 0c, a density of 8.89, and an electrical resistivity at 20c of 1.71. Its electrical conductivity in cross section is surpassed only by silver and by weight only by aluminum respectively. 1 2. High electrical and thermal conductivities, good resistance to
the melt, making it easier to separate the metal from the slag. The smelting of copper sulfide ores in ... copper concentrate per year, with an output of 300 000 tons per annum of blister copper. The plant consists of an IsaSmelt furnace, a matte-settling electric furnace, four PeirceSmith converters and two
PARTIAL ROASTING OF COPPER CONCENTRATE WITH STABILISATION OF ARSENIC AND MERCURY. ke Holmstr m. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 33 Full PDFs related to this paper. Read Paper.
Hong Yong Sohn, ... Bart Blanpain, in Treatise on Process Metallurgy Industrial Processes, 2014. 22.214.171.124.1 FeOFe 2 O 3 SiO 2 Slags. It has been customary since early times in copper smelting, when acid refractories were used universally, to add SiO 2 to form a slag with the iron that has been oxidized. This is still the most common practice today, though many furnaces now use basic ...
Copper Producers. At the beginning of coppers flow through the economy are the mining companies, which process vast quantities of low-grade ore, mostly from open-pit mines in order to produce copper. Approximately two tons of overburden must be removed along with each ton of copper ore. The ratio of overburden to ore is sometimes as high as 5 ...
The copper concentrate and flux melt, and collect in the bottom of the furnace. Much of the iron in the concentrate chemically combines with the flux to form a slag, which is skimmed off the surface of the molten material. Much of the sulfur in the concentrate combines with the oxygen to form sulfur dioxide, which is exhausted from the furnace ...
In smelting ores and concentrates of copper or nickel, matte fall is obtained by recycle of ferrous sulfate which is produced when the matte is leached with sulfuric acid. The residue from leaching then contains the copper, nickel or cobalt values in concentrated form. In this method the ferrous sulfate is reduced to ferrous sulfide at elevated temperatures.
Reliability. When it comes to melting copper, a copper furnace based on induction is far more reliable than most others. Given that the parts in an induction furnace dont need to be continually changed or replaced, manufacturers can get the most out of this type of
Green Copper. Boliden wants to set a standard for the mining and metals industry to pioneer for low-carbon metals, a concept we call Boliden Green Metals. Boliden now offers two separate green copper products, produced with drastically lower carbon footprint than the global average. Read more about Green Copper.
Copper concentrate CuFeS 2 is fed into the furnace along with a flux of silica sand, SiO 2, and oxygen, O 2. The flux is used to control the chemistry of the slag. In particular, it causes the iron Fe in the copper concentrate to accumulate in the slag phase, while the copper Cu, accumulates in the matte phase. Copper Concentrate
Direct to blister smelting simulations were made with the MPE thermodynamic package. The simulation results predicted that the copper losses to slag would be 7.9, 20.4 and 7.0 of input copper for ...
Concentrate pellets 110-150 3,5-4 2-2,3 15,0 8,5-10 Furnacematte. . 500-600 16-18 9-11 38-42 26-28 Converter matte. I800-2000 47-48 27-28 1-2 20-21 Furnaceslag 0,54 0,10 0,06 - 0,27
The lance pipe used for blowing was an alumina, through which 37.5 gmin of copper sulfide concentrate, 7.6 gmin of SiO 2 were blown along with 9.2 litermin of 95 O 2-5 N 2 volume gas.. Five minutes after the test started, owing to the formation of a high melting point substance, being a mixture of matte and produced magnetite, it was impossible to blow the raw materials to be supplied ...
Nov 06, 2018 Due to pyrolysis of copper concentrate, and reaction the decomposed products with oxygen intake, a large amount of heat release that causes the melting of copper concentrate.
filtered, and then dried to form a powder copper concentrate. This process is usually able to recover 85 to 95 percent of the copper in the ore. The dried concentrate contains approximately 20 -30 percent copper by mass, 30 per cent iron, 30 per cent sulphur, with the remainder including
Chapter 6 Copper Production Technology The last boomin technological innovation for the copper industry occurred in the first two dec-ades of this century, whenopen pit mining, flo- tation concentration,and the reverberatory
Revised June-06-2018 Copper ConcentrateOD Page 3 of 11 Updated 0108 Nickel Powder Type 123 Page 2 of 3 V1.1 medical care. Skin For skin irritation, flush with plenty of water. For skin rashes, seek medical attention. Eyes Irrigate eyeball thoroughly with water for at least 10 minutes. If discomfort