smelting oxidation desulfurization of copper slags

smelting oxidation desulfurization of copper slags

Copper Smelting and Refining Process Pan Pacific Copper

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 S・FeS 2FeO・SiO 2 SO 2 Reaction heat

Iron and copper recovery from copper slags through smelting with waste

To recover metal from copper slags a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one hazardous waste waste cathode carbon was used to treat another copper slags

Recovery of Copper from Copper Smelting Slag Using a Green Reductant

A new process is proposed for recovering copper from smelting slag using waste cooking oil as a green reductant More than 70% of waste cooking oil pyrolysis products is hydrogen In this study a 70% H2 30% N2 gas mixture was used to simulate pyrolysis products for copper slag reduction experiments The equilibrium composition oxygen potential reduction degree of Fe3O4 and the content of

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Difference of flue gas desulfurization performance and desulfurization

As can be seen from Table 1 the remelted steel slag mainly consists of compounds containing calcium Ca iron Fe magnesium Mg manganese Mn and other these compounds can be dissociated with the acid gas SO 2 in water thereby achieving the effect of FGD According to the mechanism of slag formation CaO reacts with P 2 O 5 to form C 3 P which does not react with

Smelting reduction and kinetics analysis of magnetic iron in copper

Both chemical and physical processes contribute to copper loss in slag inclusions however the main reason for the loss is that strong oxidation during copper smelting can increase the magnetic

Removal of Sulfur from Copper Smelting Slag by CO2

The experiment shows that the removal trend of sulfur in the slag is the same as that of the thermodynamic calculation and the maximum removal rate is % The utilization rate of CO

s11356 020 09191 4 PDF Sulfur Dioxide Amine

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How to Recover Copper from Slag by Flotation

Possibilities for minimizing copper losses in converter slags include 1 settling the molten slag to recover entrained matte and copper 2 smelting the slag with a suitable reductant to recover a copper iron alloy or a low grade matte 3 beneficiation of slags by magnetic separation and 4 treatment of the slag by flotation

Copper Smelting Metallurgist Mineral Processing Engineer

The matte about 45 to 55 percent copper and the remainder iron silicate slag is formed in a very fast almost instantaneous reaction hence the name flash smelting The matte sinks through the lighter slag layer and flows down the inclined crucible Conversion to copper proceeds in a zone around position two

Effect of Copper and Iron Ions on the Sulphidizing Flotation of Copper

The treatment of smelting slag has attracted much attention nowadays This study investigates the influence of Na₂S CuSO₄ and FeCl₃ on sulphidizing flotation of copper oxide The results show that a proper Cu² concentration can increase the sulphidizing effect of copper oxide while Fe³ inhibits the sulphidizing effect

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[smelting oxidation desulfurization of copper slags]

Co treatment of electroplating sludge copper slag and After oxidative desulfurization the sulphur residual content of the electroplating sludge and copper slag mixture decreases to wt and valuable Cr Ni Cu and Fe primarily exist in the form of spinel Cu Fe NiFe Cr 2 O 4

% Sciencedirect Smelting Oxidation Desulfurization of Copper Slags

VDOMDHTMLTML> % Sciencedirect Smelting Oxidation Desulfurization of Copper Slags PDF Sulfur Reaction Rate smelting deoxidation cooper slags Free download as PDF File pdf Text File txt or read online for free smelting deoxidation cooper slags smelting deoxidation cooper slags Open navigation menu Close suggestionsSearchSearch

TOHOKU UNIVERSITY Researchers Eiki Kasai

However its oxidation behavior has not been evaluated Effective utilization of KR slag will lead to reduction of CO2 emission by decreasing the amount of coke breeze and increase the ratio of formed melt during sintering Oxidation and melting behaviors of KR slag in the sintering bed were examined by using a laboratory scale sintering simulator

Proceedings The 4th International Congress on the Science and

Formation of non metallic inclusions with lower melting temperatures by slag metal reaction for high strength alloying steels Wang Thermodynamics of copper dissolution into MnO SiO2 MnS inclusion system Park Jin Distribution of copper rich phases during oxidation of recycled low carbon steels Webler Bryan A / Nick Eva M

Experimental Study on Oxidative Desulfurization of Molten Copper Slag

We study the oxidative desulfurization of copper slag at temperatures ranging from 1250 °C to 1450 °C using experimental copper slag as raw material This is significantly different from the oxidative desulfurization process of low sulfur slag wS < pct at temperatures > 1500 °C compared with the literature

Study on smelting reduction ironmaking of copper slag

According to the mechanism of smelting reduction the process of smelting reduction ironmaking from copper slag was studied The effects of slag basicity holding temperature

Smelting Oxidation Desulfurization of Copper Slags

According to the mechanism of sulfur removal easily through oxidation the process of smelting oxidation desulfurization of copper slags is studied which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags

Smelting Oxidation Desulfurization of Copper Slags

According to the mechanism of sulfur removal easily through oxidation the process of smelting oxidation desulfurization of copper slags is studied which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags Special attention is given to the effects of the holding temperature the holding time and CaF ₂ CaO addition

Smelting Oxidation Desulfurization of Copper Slags

According to the mechanism of sulfur removal easily through oxidation the process of smelting oxidation desulfurization of copper slags is studied which supplies a new thinking for

what is sulfur trioxide used for

[ 39 ] desulfurization Electrical conductivity caused by dissociation through protonating itself a category of glassy minerals from which acid The product sets in a thin layer of water on top of the process source of the sulfonyl in An oxidation state of 4 and a formal charge of 1 compound in winery sanitation oxidizing makes

FR Doc 2024 12286

This boiler slag material is made up of hard black angular particles that have a smooth glassy appearance Flue Gas Desulfurization FGD material is produced through a process used to reduce sulfur dioxide SO 2 emissions from the exhaust gas system of a coal fired boiler The physical nature of these materials varies from a wet sludge to

Smelting Oxidation Desulfurization of Copper Slags

Smelting Oxidation Desulfurization of Copper Slags LI Lei HU Jian hang WANG Hua Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 Yunnan China

Is smelting an oxidation process Quora

Smelting is a process used to extract pure metals from their ores The metals in the mineral ore are already oxidized as metal ions such as Fe2 or Fe3 So to convert them back to their metallic form they must be reduced gain electrons

Efficient Synchronous Extraction of Nickel Copper and Cobalt Nature

In the traditional smelt route the low‒nickel matte are further converter blowing to reduce the iron content and other impurities forming the high nickel‒copper matte However through

Smelting reduction and kinetics analysis of magnetic iron in copper

Both chemical and physical processes contribute to copper loss in slag inclusions however the main reason for the loss is that strong oxidation during copper smelting can increase

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lead sulphide toxicity

Navarrete I Vargas F Martinez P Paul A Lopez M Flue gas desulfurization FGD fly ash as a sustainable safe alternative for cement based materials The specimens were crushed so they could pass through a mm nylon sieve and then they were leached by a mixed acid solution HNO The LRT was blended with OPC and FA in

Kinetics of copper extraction from copper smelting slag by pressure

The leaching rate of copper and iron or silicon was 97% and less than 2% respectively when copper slag is treated by oxygen pressure acid leaching process which can achieve the purpose of limiting the leaching of Si and Fe while highly selective leaching of valuable metals under low acidity and energy consumption conditions [12] [13] [14] [15]

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