Fire Refining Of Copper

SECONDARY COPPER SMELTING, REFINING, AND ALLOYING Prepared for U.S. Environmental Protection Agency OAQPS/TSD/EIB Research Triangle Park, NC 27711 II-103 ... 110,000 smelting, fire-refining, electrolytic refining Franklin Smelting and Refining Philadelphia, Pennsylvania 16,000 smelting Southwire Carrollton, Georgia

copper (М00к), noble metals concentrating slime and elec-trolyte-refining cake are obtained on electrolysis stage. Removal of such impurities as lead, antimony, arsenic and nickel [2–6] into slag on the fire refining stage is very difficult. The basic idea of copper refining supposes the oxi-dation of impurities and slagging of formed oxides.

Provided herein is a process of fire refining blister copper, comprising the steps of (a) providing molten blister copper into an anode furnace; (b) when sulfur concentration of the molten blister copper provided in step (a) is above a first prescribed target value, oxidizing sulfur in the molten blister copper by blowing oxygen containing gas into the molten blister copper until the first ...

The copper obtained after the fire refining process still contains a significant amount of impurities (0.2– 1.1%) in its composition; therefore, it undergoes electrolytic refining aimed at ensuring high-purity copper (99.9% Cu) and extracting precious metals and other valuable impurities (selenium and tellurium) from it [4, 5].

anode copper, fire refining, reduction, anode furnace 1. Copper refining Both blister copper and copper from converters contain 1.2 - 2.4% of admixtures. These are

There is estimated the composition of non-metallic inclusions in blister copper during its air oxidation in the conditions of "Uralelektromed" JSC. Two types of oxide inclu-sions are …

Fire refining of blister copper is a singular process at very high temperatures (~1400 K), which means the furnace is exposed to heavy thermal loads. The charge is directly heated by an internal ...

The deposited copper is then separated from the cathode and anode and is replaced by a new block of raw copper at regular intervals for electrolytic copper refining. Properties and Uses of Copper. Copper is a major commercial metal. Some properties of copper are listed below: It has high electrical and thermal conductivity.

Fire refining is carried out in either rotary or hearth furnaces. Fire refining consists of a two stage process to purify the molten metal prior to casting into anode shapes. Selective …

The pyrometallurgical copper production route typically involves a three-step process from feed to anode: (s)melting, converting and fire refining.1 Two types of furnace are in use in the refining section: the rotary furnace type dominates in primary copper production, while secondary smelters tend to use hearth refining furnaces because they are more suitable for …

The conventional fire refining process consists of an anode furnace capable of treating blister to anode copper through oxidation by air and reduction by reductant e.g. natural gas, LPG or diesel. However, in most cases controlling of the refining cycle is not optimized and Outotec has identified several areas for improvement such as:

A process is disclosed for fire-refining copper sulfide having a copper to nickel ratio of more than about 7:3, which process comprises maintaining a molten bath of copper sulfide in a turbulent state to volatilize at least about 50 percent of at least one impurity from the group consisting of bismuth, lead, tin and zinc, then surface blowing the turbulent bath of copper sulfide with a free ...

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The invention relates to a deep deoxidation process for fire refining of copper. After the deoxidation impurity removal of fire refining of copper in a reactor reaches a predetermined indicator, two forms of oxygen exists in the reactor actually, namely oxygen [O] in liquid copper containing saturated Cu2O and oxygen (O) in Cu-saturated liquid cuprous oxide, and at the …

. DOI: 10.18502/KEG.V3I5.2676 Corpus ID: 55460881; Modeling of Metallurgical Process of Copper Fire Refining

Based on a novelty concept of blister copper oxidation and reduction in a packed bed type of reactors the new process of continuous fire refining has been developed.

A novel method involving a molten Ga flux for the synthesis of diffraction quality crystals of the compound Cu3.82(1)Mo3O12, a copper molybdate in the Lyonsite (α-Cu3Fe4(VO4)6) family, has been ...

The process simulations covered the process from sulfidic copper ore to blister copper but excluded the impact of downstream processes such as fire refining, electrolytic refining, wet gas cleaning and sulfuric acid production since these are performed relatively similarly in all the technologies compared with minor influence on the outcome.

The primary production of sulfide concentrates includes smelting to copper matte or blister copper, conversion of matte to blister copper, and refining to copper. Smelting, converting, and fire ...

Fire refining of the blister copper in order to remove the remaining sulfur content (ppm). This consists of two sub-processes to produce the anodic copper: oxidation and reduction. Oxidation involves blowing air into the bath through one or two tuyeres in order to decrease the sulfur (and other impurities) content of the blister copper. ...

A new, continuous fire refining process for copper has been developed and tested at the 5 tph pilot scale. During oxidation, the blister copper flows through a packed bed of crushed refractory bricks counter-current to a hot oxygen containing gas. The resulting desulphurized copper flows then directly into a packed bed of charcoal for deoxidation. By controlling the air …

The final step consists of fire refining the blister copper to reduce the sulfur and oxygen to even lower levels. This oxidation-reduction process is usually carried out in a separate furnace to ensure that the final smelter product reaches the level of 99.5 percent copper that is required for electrolytic refining. At this point, the copper is ...

SECONDARY COPPER SMELTING, REFINING, AND ALLOYING Prepared for U.S. Environmental Protection Agency OAQPS/TSD/EIB Research Triangle Park, NC 27711 II-103 ... Sauget, Illinois 125,000 fire-refining, electrolytic refining Chemetco Alton, Illinois 135,000 one-stage (top-blown rotary converter) smelting/refining Gaston Recycling Industries

This report discusses Electrorefining Copper research conducted to increase the rate, deposit purity, and overall efficiency in industrial processes used to electrodeposit and purify metals by increasing substantially the …

Fire Refining of Copper. Fire refining is an essential process for purifying copper, involving key steps to remove impurities and produce high-purity copper for industrial use. …

Arsenic control in the copper-making industry is an important topic, and it is essential to develop new fire-refining technologies for As removal from copper scrap or blister …

Copper reduction represents one of the steps in the process of fire refining of blister copper. Process of copper reduction with natural gas as performed in the anode furnace was modeled.

The FRHC impure copper refining process, known as the "fire refining high conductivity copper" production process, is a patented technology developed in the mid-1980s by experts and scholars from ...

Initial compositions of copper scrap ranged between 95 and 99.6% copper, usually with 1000–7000 ppm of total impurities such as lead, zinc, tin, iron, antimony, nickel and silver. After smelting and fire-refining, there were selected the studied samples from different castings, whose compositions are shown in Table I.

The final blister copper fire refining technology mostly adopts rotary anode furnace. Therefore, in the process of processing and extracting the copper from concentrate to produce anodes, there are dozens of technology combinations. Among them, the non-continuous converting technologies for molten or cold matte are often adopted in the ...