Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent.
recycling of sulfuric acid in copper extraction process
Metal Extraction Chapter 13 Flashcards Quizlet
Copper can also be extracted by using the displacement reaction of scrap iron with an aqueous solution of copper. Solution can be made by reacting sulfuric acid with copper ores The copper solution can be formed from low grade ores or from scrap recycled copper The more reactive iron displaces the copper by reducing the copper ions.
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In a first step, the following leaching solutions were applied An oxidative sulfuric acid leach to dissolve copper and part of the silver; an oxidative chloride leach to dissolve palladium and
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Conversely, the wet smelting (solvent extraction electrowinning [SX EW]) method used to produce copper ingots produces the copper ingots through an electrolytic process from a leach solution obtained by dispersing sulfuric acid on copper ore.
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There is a broad range of TENORM concentrations in copper mining wastes. Mining and extraction of copper by surface or underground methods can concentrate and expose radionuclides in the waste rock and tailings tailingsThe remaining portion of a metal bearing ore after some or all of a metal, such as uranium, has been extracted.. Leaching and solvent extraction/electrowinning processes, as well as
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May 28, 20160183;32;Copper is leached with sulfuric acid from crushed oxide based ores. The refined copper from this process is classified as SXEW (Solvent Extraction ElectroWon). I visited a copper mine in Arizona where this process was used.. Crushed ore is spread over the side of a very large field. There was a collection liner beneath the ore.
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Present and Possible Future Uses of Amine ExtractantsNeutral or Solvating Type ExtractantsOrganic Acid ExtractantsReagents in Development, GoldGold ExtractionSolvent Extraction DiluentsHow does solvent extraction work An increasing demand for metals in general, and higher purity metals in particular, decreasing ore grades and more stringent environmental regulations have driven, and will continue to
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Figure 2 Tin/lead dross recycling process. 3.3 Recovery of copper oxide from wastewater sludge. The wastewater sludge in the printed circuit board industry typically contains high amounts of copper (gt;13%, dry base). The recycling of the sludge is simple and straightforward.
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Purification of Impure Copper can be Achieved by Electrolytic Refining What is impure copper The smelting process takes copper ore and processes it into metal. This metal (sometimes called blister copper contains other metals (impurities) which often include valuable metals as gold, silver, arsenic, platinum and others.
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Copper powder, containing 90 pct copper, was recovered from the cathodes, Carbon (2 pct) was added and the material was melted without agglomeration in an induction furnace to produce an ingot containing 99.7 pct copper. Summary. The technical feasibility of regenerating and recycling spent chromic acid sulfuric acid etchants has been demonstrated.
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Sulphuric Acid Recycling. Spent sulphuric acid and other sulphate compounds, previously regarded as waste, are an increasingly important source of sulphur dioxide for sulphuric acid manufacture. The sulphuric acid may have been used as a catalyst or drying agent,
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The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore. The resulting pregnant leach solution of sulfuric acid and copper sulfate is collected in a small pool.
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Copper recovery by L/SX/EX in 1968. In 1968 there were only two widely practiced copper leaching processes using dilute sulphuric acid. The first process, vat leaching of high grade copper oxide ore followed by EW of copper from the leach solution, produced low quality copper cathode at
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The sulfur dioxide is dried by passage through concentrated sulfuric acid. It is then oxidized to sulfur trioxide and hence sulfuric acid using the Contact Process (Unit 50). Hydrochloric acid. The steel industry is a major user of hydrochloric acid for the pickling process to remove impurities. The industry uses a process known as pyrohydrolysis to recover the spent acid, which now contains a mixture of iron
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The pregnant leach solution is the output product of leaching. It forms as sulfuric acid percolates through the ore pile while the copper content of the ore is introduced in the aqueous solution. At some sites, drainage systems move the solution to the next processing stage using gravity; other sites use pumps.
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Solvent extraction. Sulfuric acid is poured through a heap of copper ore. The acid reacts with the copper to form copper sulfate solution. The copper sulfate solution is then used as the electrolyte in electrolytic refining. The last part of the process is called electrowinning. Hence the full name of Solvent Extraction Electrowinning (SX EW). The smelting process is by passed.
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Oct 01, 20180183;32;These results suggest that the NF membrane process is suitable for the recovery of highly purified sulfuric acid aqueous solution from copper refining sulfuric acid wastewater. 4. Conclusion. In this study, we developed an NF membrane process for the recovery of aqueous sulfuric acid from copper refining industrial wastewater.
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Extracting copper from other ores. Copper can be extracted from non sulphide ores by a different process involving three separate stages Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulphuric acid to produce a very dilute copper(II) sulphate solution.
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Copper can be extracted from non sulfide ores by a different process involving three separate stages Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulfuric acid to produce a very dilute copper(II) sulfate solution. Concentration of the copper(II) sulfate solution by solvent extraction.
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copper from the studied sample, tests using sulphuric acid and hydrogen peroxide were carried out. The objective of these tests was to obtain better values of copper extraction from the electronic shredded scrap than that obtained with the other oxidising agents tested. The samples were leached in a glass beaker containing a 50 % (v/v) diluted
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The reduction of iron ions concentration from copper electrowinning electrolyte solution in copper solvent extraction and electrowinning process, is important to maintain good current eciency.
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May 16, 20150183;32;For every 1 mL of sulfuric acid originally added 4 mL of water is added. The solution of copper sulfate is electrolyzed with a platinum anode and copper cathode.
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begin the recycling process Lead ingots recycled from battery grids, other battery parts (e.g. posts and terminals) and lead oxide are used to manufacture lead for new grids, parts, and lead oxide Sodium sulfate crystals seperated from used electrolyte (dilute sulfuric acid) is recycled and sold for use in textiles, glass and detergent
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It was not the scope of this paper to obtain copper and tin as separated metals. However, an electrowinning process for copper recovery is used in the extractive metallurgy of copper. In this process, copper oxides are solubilized by inorganic acids, such as sulfuric acid or aqua regia.
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Ferric sulfate, which is a powerful oxidizing agent, then oxidizes the copper sulfide minerals and the copper contained is then leached by the sulfuric acid formed. In the case of uranium, the ferric sulfate oxidizes tetravalent uranium oxide, which is insoluble in acid, to hexavalent uranium oxide, which is then leached by the sulfuric acid.
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The smelter for sulfide ores produces sulfur dioxide gas. This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores. Scrubbing sulfur dioxide also protects the environment. A by product of the smelting and converting furnaces is sulfuric acid.
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Nov 18, 20150183;32;Process Copper sulfide from copper ore extraction with sulfuric acid ( H2SO4 ) an insoluble metal oxide is reacted with a dilute acid to form a soluble salt. Sulfuric acid react to produce copper
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Sulfur dioxide gas, for example, is captured and turned into sulfuric acid which can then be used in the extraction process or sold for such purposes as fertiliser manufacture. Oxidised copper ores can be treated by hydrometallurgical extraction .
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Sulfuric Acid. Old battery acid can be handled in two ways 1. The acid is neutralized with an industrial compound similar to household baking soda. Neutralization turns the acid into water. The water is then treated, cleaned, tested in a waste water treatment plant to be sure it meets clean water standards. 2.
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Manufacture of sulfuric acid. The process for producing sulfuric acid has four stages a) extraction of sulfur b) conversion of sulfur to sulfur dioxide c) conversion of sulfur dioxide to sulfur trioxide d) conversion of sulfur trioxide to sulfuric acid.
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Jan 20, 20160183;32;Removal of sulfuric acid from electrowin solutions using Alamine 336 in isodecanol shell sol 2325 solvent mixture is also reported (Ntengwe, 2010). Extraction of Cu is also investigated by various researchers. Extraction of copper, nickel and cobalt from the leach liquor of a sulphide concentrate by using LIX 84 is studied (Sahu et al., 2004).