THE EFFECT OF COOLING RATE OF SLAG FROM PRIMARY
Apr 05, 2015· Mihajlović - The effect of cooling rate of slag from primary copper production 131 During slow cooling of the slag a reaction of copper (I) oxide with the iron occurs according to the reaction (3). With prolongation of cooling, the reaction equilibrium is shifted to the right. Cu2O(l)+3FeO(l)→2Cu(s)+Fe3O4(s) (1) Experimental partEffect of Cooling Rate and Slag Modification on the Copper,,Jul 31, 2020· The amount of copper flash smelting slag has increased during the recent years along with an increasing slag-to-metal ratio. During slag tapping, some copper sulfide is mechanically entrained. As a result, it is necessary to recover copper matte from the slag by suitable methods. At present, the most common way is slow, controlled cooling in a transfer ladle. However, research onPHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG,copper slag corresponds to 30–40 % iron, 35-40% silica, less than 10 % of alumina and calcium oxide and copper content is around 1 %Cu, similar to the ore mined. Cleaning of the primary slag is often economically justified and techniques including slow cooling and flotation, or pyrometallurgical orCopper Slag - an overview | ScienceDirect Topics,Two types of slag can be produced: an air-cooled copper slag with light black color and a glassy appearance, and granulated copper slag which is porous with a vesicular structure. 26 The specific gravity of copper slag varies as a function of the iron content, between 3.2 and 3.8 kg/m 3, and its water absorption is typically very low (<0.2 wt,Minimization of Copper Losses in Copper Smelting Slag,,Sep 21, 2012· Smelters using slag milling and flotation for slag cleaning generally operate under conditions where most of the copper in slag would tend to form Cu 2 S upon cooling, although some metallic copper may still form via reaction 3.7 Ideally, the slag should be slow cooled to allow most of the copper to form larger matte prills (over 30 μm in size,ISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES IN THE,known that the copper content depends of residence time in the RHF and it is benefit with a less amount of slag. • The copper content of slag sampled from the RHF slag spout was kept around 0.83 ± 0.4 %. • The magnetite content in the RHF slag was increased when the sílica to iron ratio was re-duced, Figure 3 illustrates these results.
Carbothermal reduction of copper smelter slag for,
Jun 01, 2017· Slag systems are usually studied with reference to CaO, SiO 2 and Al 2 O 3 content. Fig. 2 shows the ternary phase diagram of CaO-SiO 2-Al 2 O 3 system (Levin and McMurdie, 1975).In this figure, the chemical composition of the initial copper slag sample investigated is also shown along with that of a typical Blast Furnace (BF) slag.Cooled Slag - an overview | ScienceDirect Topics,George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 5.3.1 Air-cooling. Air-cooled slag is solidified under ambient conditions.Immediately after being discharged from the blast furnace, the molten blast furnace slag is dumped into cooling pits for air-cooling before further processing for slag products.Use of waste copper slag, a sustainable material,,May 03, 2014· Physical properties. Copper slag grains have a color of black glassy type and a fineness modulus of 3.5. The hardness is about 7 Moh’s scale. Other typical physical properties are given in Table 2.In order to use copper slag as a mineral admixture, it was necessary to carry out an experimental study associating grinding time, average diameter, and pozzolanic activity assessed in mortars [].Reuse of copper slag as a supplementary cementitious,,Nov 01, 2020· 1. Introduction. Copper slag (CS) is a solid waste generated from the production of copper metal. Approximately 2.2–3 tonnes of slag is generated for every tonne of copper produced (Sharma et al., 2017a).The annual production of CS is estimated to be approximately 40 million tonnes worldwide (Dhir et al., 2016).China has become the largest CS producer, accounting forCopper in solidified copper smelter slags,suspended matte and metallic copper. Solidification and cooling phenomena in copper slags Mineralogical composition and morphology of copper in slags, important for slag flotation, is finally formul ated in s olidification and cooling of slag. Only metallic and sulphide particles can be flotated from ground slag, valu able metals dissolved in slagEffect of Cooling Rate and Slag Modification on the Copper,,Jul 31, 2020· The amount of copper flash smelting slag has increased during the recent years along with an increasing slag-to-metal ratio. During slag tapping, some copper sulfide is mechanically entrained. As a result, it is necessary to recover copper matte from the slag by suitable methods. At present, the most common way is slow, controlled cooling in a transfer ladle.
DETERMINATION OF THE BEHAVIOUR OF VALUABLE METALS
A super slowly cooling could be the solution to treat smelting copper slag in order to recover copper and silver into the produce matte and generate a remaining slag with large crystal size of magnetite that allow to release molybdenum. Leandro Voisin e [email protected] w pyrolab.amtc.clInnovative and Safe Copper Launder Design,Keywords: Pyrometallurgy, furnace, auxiliary equipment, copper slag launders Abstract – Pyromet has designed copper launders for tapping slag. What makes Pyromet’s launder design innovative and safe is that it does not have any cooling water channels underneath the launder runner, whilst achieving effective cooling of the runner.PHYSICOCHEMICAL CHARACTERIZATION OF COPPER,copper slag corresponds to 30–40 % iron, 35-40% silica, less than 10 % of alumina and calcium oxide and copper content is around 1 %Cu, similar to the ore mined. Cleaning of the primary slag is often economically justified and techniques including slow cooling and flotation, or pyrometallurgical orISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES IN,known that the copper content depends of residence time in the RHF and it is benefit with a less amount of slag. • The copper content of slag sampled from the RHF slag spout was kept around 0.83 ± 0.4 %. • The magnetite content in the RHF slag was increased when the sílica to iron ratio was re-duced, Figure 3 illustrates these results.Carbothermal reduction of copper smelter slag for,,Jun 01, 2017· Slag systems are usually studied with reference to CaO, SiO 2 and Al 2 O 3 content. Fig. 2 shows the ternary phase diagram of CaO-SiO 2-Al 2 O 3 system (Levin and McMurdie, 1975).In this figure, the chemical composition of the initial copper slag sample investigated is also shown along with that of a typical Blast Furnace (BF) slag.Environmental Guidelines for Copper Smelting,from hydrometallurgy processes, cooling water, air scrubbers, washdowns, stormwater and sludges from wastewater treatment processes that require reuse/recovery or appropriate disposal. The major portion of the solid waste is discarded slag from the smelter. Discard slag may contain 0.5-0.7% copper and is
Use of waste copper slag, a sustainable material,
May 03, 2014· Physical properties. Copper slag grains have a color of black glassy type and a fineness modulus of 3.5. The hardness is about 7 Moh’s scale. Other typical physical properties are given in Table 2.In order to use copper slag as a mineral admixture, it was necessary to carry out an experimental study associating grinding time, average diameter, and pozzolanic activity assessed in mortars [].Mineralogy of primary phases in slags and mattes from the,,a shaft furnace. During the 1980s, a Slag Mill was built to re-process old copper reverbatory slags by converter techniques producing granulated slag, which is passed to the Pb smelter to recover Pb and also Cu. Since 1997, the Slag Mill has been used to re-treat converter slag tailings (Tsumeb Corporation Ltd., 1987; SchneiderRapid Separation of Copper Phase and Iron-Rich Phase From,,Mar 12, 2018· Copper slag, a main by-product produced in the conversion of copper matte during the copper pyrometallurgy process[] is a secondary resource of Cu-Fe.The annual output of copper slag has increased to more than 1.5 million tons in China alone[2,3] with the rapid development of the copper industry.Moreover, a large amount of converter slag and leaching residue is produced in other stepsTHE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN,A typical furnace with slag operation comprises a round or rectangular furnace shell with tap holes for slag, matte or metal. The furnace shell is refractory lined and if – additional shell cooling is required by the process water-cooled. Various sidewall – cooling systems are available depending on the specification of the process: rinse“Physicochemical characterization of copper slag and,,slag, and this constitutes one of the main by-products of the metal extraction industry [2]. The average composition of primary copper slag corresponds to 3040 % iron, 35– -40% silica, less than 10 % of alumina and calcium oxide and copper content is around 1%Cu, similar to the ore mined.Mechanical Properties and Durability of Concrete with,,Jan 27, 2017· Copper slag is a voluminous waste material obtained during the manufacturing of copper (matte smelting process). As its disposal becomes a concern for environmental protection agencies and governments, possible alternative outlets for this waste material are needed. The paper presents a laboratory study on CEM-II concrete mixes, containing water-cooled copper slag waste material for a
Copper in solidified copper smelter slags
suspended matte and metallic copper. Solidification and cooling phenomena in copper slags Mineralogical composition and morphology of copper in slags, important for slag flotation, is finally formul ated in s olidification and cooling of slag. Only metallic and sulphide particles can be flotated from ground slag, valu able metals dissolved in slagDETERMINATION OF THE BEHAVIOUR OF VALUABLE METALS,A super slowly cooling could be the solution to treat smelting copper slag in order to recover copper and silver into the produce matte and generate a remaining slag with large crystal size of magnetite that allow to release molybdenum. Leandro Voisin e [email protected] w pyrolab.amtc.clInnovative and Safe Copper Launder Design,Keywords: Pyrometallurgy, furnace, auxiliary equipment, copper slag launders Abstract – Pyromet has designed copper launders for tapping slag. What makes Pyromet’s launder design innovative and safe is that it does not have any cooling water channels underneath the launder runner, whilst achieving effective cooling of the runner.ISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES IN,known that the copper content depends of residence time in the RHF and it is benefit with a less amount of slag. • The copper content of slag sampled from the RHF slag spout was kept around 0.83 ± 0.4 %. • The magnetite content in the RHF slag was increased when the sílica to iron ratio was re-duced, Figure 3 illustrates these results.“Physicochemical characterization of copper slag and,,slag, and this constitutes one of the main by-products of the metal extraction industry [2]. The average composition of primary copper slag corresponds to 3040 % iron, 35– -40% silica, less than 10 % of alumina and calcium oxide and copper content is around 1%Cu, similar to the ore mined.Rapid Separation of Copper Phase and Iron-Rich Phase From,,Mar 12, 2018· Copper slag, a main by-product produced in the conversion of copper matte during the copper pyrometallurgy process[] is a secondary resource of Cu-Fe.The annual output of copper slag has increased to more than 1.5 million tons in China alone[2,3] with the rapid development of the copper industry.Moreover, a large amount of converter slag and leaching residue is produced in other steps
Copper Launders | TENOVA
Water-cooled copper launders use the freeze lining principle to reduce component wear. Lower wear means longer launder life, cutting long-term maintenance costs and downtime production losses. Many launder designs present an inherent safety risk by positioning the water cooling passages underneath the slagImproving Beneficiation of Copper and Iron from Copper,,waster copper slag reached 140 million ton by 2015 in China [6]. Generally, copper slag contains about 35–45 wt. % iron and 0.5–1.5 wt. % copper, indicating that it is a valuable secondary resource for recycling and utilization [3]. However, more than 80% of copper slag has not been effectivelyTHE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN,A typical furnace with slag operation comprises a round or rectangular furnace shell with tap holes for slag, matte or metal. The furnace shell is refractory lined and if – additional shell cooling is required by the process water-cooled. Various sidewall – cooling systems are available depending on the specification of the process: rinseMineralogy of primary phases in slags and mattes from the,,a shaft furnace. During the 1980s, a Slag Mill was built to re-process old copper reverbatory slags by converter techniques producing granulated slag, which is passed to the Pb smelter to recover Pb and also Cu. Since 1997, the Slag Mill has been used to re-treat converter slag tailings (Tsumeb Corporation Ltd., 1987; SchneiderRectangular furnace design and revolutionary DC-slag,,+ copper cooling system 2006: DC slag cleaning unit for precious metals (PGM, Cu, Co, etc.) Figure 1 shows a typical submerged arc furnace from the 1950s, as it was promoted at that time. It should be pointed out that the principles of the furnace technology have not changed significantly.US4372542A - Copper slag trap - Google Patents,Disclosed are apparatus for and a method of continuously trapping slag during molten copper transfer wherein a refractory slag trap comprising baffles traps slag particles by providing areas of non-uniform flow within the molten copper melt thereby causing all constituents having a specific gravity less than that of molten copper to rise to the surface of the molten copper and form,
Copper Slag - SME Gulf
Copper Slag The majore use of Copper slag is a blast cleaning medium, but other uses include its application as roofing granules, as an additive for ceramics, and as an aggregate for asphault coatings. Abrasive applications are primarily for etching and cleaning of new steel as well as removal ofRecovery of cobalt, nickel, and copper from slags, using,,Nickel-copper converter slag 'A'- 100 kVA and 200 kVA. Using converter slag from a nickel-copper plant, tests were carried out, in 1990, on a 100 kVA furnace (operated at 30 kW) and on a 200 kVA furnace (operated at 85 kW), at low additions of reductant (in order to minimize the reduction of iron).,,,,
