1 Al slag and Cu slag obtained by adding S to separate Cu during refining crude Sn which contains 15 25% Cu 60% Sn and S are mixed and smelted to produce a Sn Cu Pb Sb Bi alloy This alloy is subsequently converted into a babbitt alloy after the separation of Pb and Bi by vacuum distillation
Large amounts of lead slag are produced during the production of primary lead and secondary lead Considering lead concentrate smelting as an example a primary lead smelting system production of 1 t of lead will discharge 7100 kg of lead slag Hou 2011 At the secondary lead recycling process for each ton of metallic lead produced 100 350 kg of slag
The term slag is used for different materials which result from solidification of a it refers to pyroclastic rocks [] sometimes to ashes from waste incineration which have undergone sintering due to partial melting [] but mostly for pyrometallurgical residues which result from the reaction of slag forming agents with gangue or impurities in the metal in
Copper slag generated mainly during copper smelting and classified as a potentially harmful waste is an important secondary resource containing not only valuable metals such as Cu Fe Zn Co and Ni in abundant quantities but also hazardous elements such as Pb and in response of its potential economic performances and environmental benefits
Abstract The gold recovery from secondary resources is in the spotlight due to its high economic value and as the circular economy s main objective As a valuable secondary source the slag resulted from the gold bearing electrolytic mud smelting contains up to 15 k g t−1 Au and 9 13 kg t−1 Ag respectively The gravity separation s use to concentrate gold
Slag produced as a byproduct in industrial processes contains considerable metals contents which need to be recovered to avoid environmental contamination In present review the types applications recovery of metals from slag and their hazardous effects have been discussed Gravimetric magnetic floatation pyrometallurgical and hydrometallurgical treatments are
ABSTRACT Vanadium bearing steel slag is a typical solid waste in the steel industry and a valuable secondary resource for vanadium production In this paper a direct alkaline leaching process was proposed to extract valuable vanadium and achieve comprehensive utilization of the residue by incorporating the new process into the conventional Bayer alumina
The CRTs were smelted under mildly reducing conditions at temperatures up to 1250 °C The study demonstrated that it is technically feasible to produce crude alloys of copper and lead from electronic waste using an integrated process flowsheet Compositions and masses of metal slag and fume from CRTs tests are presented in Tables
A novel approach for the recovery and cyclic utilization of valuable metals by co smelting spent lithium ion batteries with copper slag Guorui Qu B Li Yong gang Wei Engineering Materials Science
concentration step are smelted to bring about physical and chemical changes that enable recovery of base metals PGMs and other valuable metals in crude form In general the idea is to melt the concentrate in a furnace to produce a matte which contains all the sulphides below a carefully maintained slag layer This matte which contains large
The Celts improved the metal by adding some carbon and thus making steel The technique spread over the Roman Empire Chemical analyses of these slag heaps is a central part of understanding how the ore was smelted Places with traces of iron production in Trøndelag mid Norway Slag from three places in Norway and from Iceland
Because of the widespread presence of arsenic in various smelting waste slags it not only hinders the recycling and utilization of waste slag but also causes serious pollution to the ecological environment In this study As2O3 the main form of arsenic in non ferrous metal smelting slag was used as the research object and FeCl3 was used as the chlorination agent
The reduction behavior of metal containing phase and the difference in density and melting point between molten metal and secondary slag are the key to the metallurgical recovery of CSS but also as flux to reduce the melting point of slag Firstly it was roasted in air for 60 min and then smelted with wt% waste cathode carbon and 25
In the present paper recovery of valuable metals from copper smelter slag of Balkhash copper plant Kazakhstan was investigated To recover Fe Zn and Cu to water soluble form the mixture of 150 g of copper slag and 60 g of 85% sulfuric acid was granulated and then roasted in the temperature range of 473 643 K 200 370 °C followed by sulfuric acid
Electroslag remelting is the technology of smelting and refining prefabricated metal electrodes by using slag resistance heating which originated from electroslag welding In the late 1940s it was first proposed by American scientist Hopkins The end of the consumable electrode is buried in the high temperature liquid slag basin and
In this case the slag design is of high relevance since both low solubility for the more noble metals and a high enrichment of lithium in the slag phase are to be achieved
The lithium content of the slag was still wt % in the best case The lowest contents of nickel cobalt and copper in the slag were 71 ppm wt % and wt % respectively in the best
Slag is an impurity extracted from the metal ore itself A brief history Smelting has been used to make key tools and weapons as far back as ancient history The technique dates back to 5000 BCE when the first metal copper was smelted in the Middle East Metal discoveries such as copper and bronze had a tremendous influence on human history
Steel making slag generated during iron and steel making processes contains the abundant oxidization of heavy metals and alkaline It can be seen from Table 1 that the alkaline content in the slag which showed a high affinity toward CaO K 2 O and MgO is % and the total percentage of heavy metal oxides Fe 2 O 3 and Al 2 O 3
Copper slag generated mainly during copper smelting and classified as a potentially harmful waste is an important secondary resource containing not only valuable metals such as Cu Fe Zn Co and Ni in abundant quantities but also hazardous elements such as Pb and in response of its potential economic performances and environmental benefits
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