Last edited by Gugal
Sunday, July 26, 2020 | History

2 edition of Operation of A Sulfuric Acid Plant Using Blended Copper Smelter Gases. found in the catalog.

Operation of A Sulfuric Acid Plant Using Blended Copper Smelter Gases.

Industrial Environmental Research Laboratory (Cincinnati, Ohio)

Operation of A Sulfuric Acid Plant Using Blended Copper Smelter Gases.

by Industrial Environmental Research Laboratory (Cincinnati, Ohio)

  • 282 Want to read
  • 34 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesUS Environmental Protection Agency Office of Research and Development Environmental Protection Technology Series -- Ops
ID Numbers
Open LibraryOL21750702M

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. For example: FeO(s) + SiO 2 (s)→ 2 (slag) This is very similar to the removal of impurities in the blast furnace.   The largest smelter operations produce copper. Smelter acid is nondiscretionary production. About 10 percent of the H2SO4 market is supplied by smelter acid, the remainder coming from virgin acid (elemental sulfur burning, acid sludge burning and stack gas desulfurization) production.

The review of the operation of a sulfuric acid plant processing off- gases from a copper smelter was also conducted to determine the most optimum operating conditions. It was found that, in some cases, even when SCL concentration is high enough for direct processing, combining an FGD system with an acid plant will tend to reduce the overall. The measures required new sulfuric acid plants, elimination of fugitive gases from the coke plant, use of oxygenated gases in the anodic residue plant, a water treatment plant for the copper refinery, a recirculation system for cooling waters at the smelter, management and disposal of acidic solutions at the silver refinery, an industrial.

Dundee ordered a sulfuric acid plant from Outotec at a price of EUR million to process the gases produced during copper smelting. Measurements have shown that the new plant has reduced sulfur gas emissions by more than 80 percent. In spring , Outotec took its largest order for two years. Blister copper is produced from copper oxides or dead-roasted copper sulfides in a cyclic smelting process using a carbon reductant. In the first stage of the cycle, carbon reductant is added to the furnace charge in stoichiometric excess to form a copper-depleted slag and a molten black copper fraction. The slag is tapped, leaving black copper in the furnace, and a second charge containing.


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Operation of A Sulfuric Acid Plant Using Blended Copper Smelter Gases by Industrial Environmental Research Laboratory (Cincinnati, Ohio) Download PDF EPUB FB2

Institute, Research Triangle Park, N.C, of the operation of a contact sulfuric acid plant at a copper smelter being fed with blended exit gases from roasters, reverberatory furnaces, and converters. The investi- gation focuses on the problem of a visible plume from the acid plant.

considered more important that the by-product sulphuric acid. Operation and maintenance of the acid plant often suffered because of this misconception.

Acid was sometimes disposed of at a loss just to get rid of it. For a short period of time, sulphuric acid produced from a smelter was worth.

Outokumpu flash smelting is a closed process which can achieve up to 99% capture of the sulphur-rich gases from the smelting furnace for the production of sulphuric acid.

The technology was first introduced at Outokumpu's Harjavalta smelter in Finland in the late 's. Control of SO2from smelters is commonly performed in a sulfuric acid plant. Use of a sulfuric acid plant to treat copper smelter effluent gas streams requires that particulate-free gas containing minimum SO2concentrations, usually of at least 3 percent SO2, be maintained.

A control strategy analysis for the operation of a copper smelter and two different acid plants is performed. The gas, reach in sulphur dioxide and dust, is generated by the combined operation of two Teniente Converters and four Peirce Smith : Luis G.

Bergh, Viviana Muquillaza, Patricio B. Chacana. The initial purpose of the plant is the pyrometallurgical processing of copper-pyritic ores of the Blyavinsky deposit without beneficiation, using the advanced pyrite smelting method (Orkl process) to produce copper matte (with a copper content of %) and elemental sulfur (or sulfuric acid) from metallurgical gases.

There were only two. Matthew J. King has over 25 years experience in copper smelter operations and sulfuric acid plant projects. The first eight years of his career were spent in various operations roles at a copper smelter.

During that period, he completed his PhD focused on control and optimisation of metallurgical sulphuric acid plants. The Lurgi-Mitsubishi Double Contact Absorption process is applied in sulfuric acid plant to convert SO 2 in smelter off-gas into sulfuric acid with sulfuric recovery ratio in the world's highest level at more than %.

The sulfuric acid is supplied through pipeline to the next door fertilizer company. In making sulfuric acid, the hot gases are first collected from the roasters, furnaces, and con- verters (see box 8-B). The gases are cooled, cleaned (through three series of dust collection systems) to recover copper from the dust and prevent foul- ing of the acid plant, and then treated with sul- furic acid to remove any water vapor.

copper smelting, in order to reduce air pollution, goes back at least years.2A Manufacture of sulfuric acid from copper smelter gases was undertaken in Great Britain at least years ago, partly in response to a need to control air pollu-tion.2A It is noteworthy that one of the major technical.

The slag obtained from the converters and from the smelting furnace is transported to a flotation plant. The sulfuric gases from the smelting furnace and the converters are passed on to produce sulfuric acid.

The non-oriented gases coming out when the converters are spun are cleaned with a secondary gas cleaning system. The samples were ground and mixed with water and sulphuric acid to form an acid soluble copper content of %, % total copper and 22 % solids.

The leaching was carried in duration of Operation of a sulfuric acid plant using blended copper smelter gases. Final report Mar--Dec 75 high degree of control of SOx emissions at copper smelters can be obtained by blending reverberatory furnace gases with gases from roasters and converters and using the combined stream as feed to a sulfuric acid plant.

The Bor Copper Smelter in. The Acid Plant Sulfur dioxide gas from the flash furnace is captured and combined with water in an adjacent acid plant to produce sulfuric acid is sold as a by-product to chemical manufacturers in the United States.

The Hayden smelter produces 2, tons of high-purity sulfuric acid every day. Tapping the Flash Furnace. Matthew J. King has over 25 years experience in copper smelter operations and sulfuric acid plant projects.

The first eight years of his career were spent in various operations roles at a copper smelter. During that period, he completed his PhD focused on control and optimisation of metallurgical sulphuric acid plants.

problem of intermittent S02 flow to the sulfuric acid plant in a copper smelter forthcoming process the matte from a flash smelting furnace is cooled, crushed, and ground. then fed to another flash smelting furnace to produce blister copper.

In other words The second flash smelting furnace will replace the Pierce-Smith converter. William G. Davenport's 95 research works with citations reads, including: Nickel and Cobalt Production.

About 30% of the world's sulfuric acid is made from the SO 2 in smelter and roaster offgases. These gases contain volume% SO SO 2 is suitable for making sulfuric acid, but the gases must be cooled, cleaned, diluted, and dried before being sent to acidmaking.

Cooling is usually done in a heat recovery boiler—which cools the gas and recovers its heat as steam. COPPER SMELTING The overall copper process is shown in Figure ; this block diagram also shows the sulfuric acid plant that processes the sulfur dioxide generated in the roasting and converting steps.

The production of sulfuric acid from a copper smelter requires smelter process gas with an SO2 concentration in the. In the past, sulphur dioxide gases were emitted from the m lead smelter stack and the m copper smelter stack. The sulphuric acid plant has been designed to capture 80% or more of the sulphur dioxide emissions from the copper smelter.

The guaranteed conversion efficiency is. The company built two acid plants, in Isabella and Copperhill, which did in fact contain the sulfur dioxide output. And so, even though the Court had found for Georgia, it did not instate the injunction.

Ironically, sulfuric acid ultimately replaced copper as TCC’s major product. InTCC built a large sulfuric acid plant at Copperhill.The ammonia scrubber was replaced in by an acid plant when a new technique for blast furnace operation (Momoda) was developed that yielded gas rich enough for acid manufacture.

Copper smelting at Shisakajima was cur- tailed starting in when the parent Sumitomo Co. constructed the Toyo flash furnace smelter near Niihama.The general process flowsheet of the copper smelter used for piloting the COCOP solution is pre-sented in the figure 1.

The main raw materials are sulfidic copper concentrates that are first blended to feed mixture and then dried before processing.

Flash Smelting Furnace (FSF) and Peirce-Smith Converters (PSC) are in the heart of the operation.