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Copper - sulphuric-acid

The process is a continuous, -step process which produces blister copper from concentrates in three interconnecting furnaces. Concentrate and oxygen-enriched air (30-35% O 2 ) enter the smelting furnace through vertical lances and are smelted to produce a matte of .

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(PDF) Kinetics of Copper Reduction from Molten Slags

The studies are focused on the slag cleaning process in the three - electrode electric furnace (EF), where components of the slag reduce to matte and EF slag in a periodic batch process.

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Properties and Uses of Steelmaking Slag | ispatguru

Nov 14, 2018 · Fig 1 Processing of steelmaking slag. As steelmaking slag is formed, it is in a molten or red-hot state at temperatures ranging from 1,300 deg C to 1,700 deg C. This slag is immediately subjected to the cooling process upon removal. Usually, this is performed in a cooling yard by air cooling and moderate water sprinkling.

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Steel - Basic oxygen steelmaking | Britannica

The process. When slag appears, the converter is rotated all the way back, and the slag is poured over the converter mouth into a slag pot. For better separation of slag from liquid steel, special taphole-closing devices such as refractory balls or nitrogen jets, as well as slag-detection devices, are often used.

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Viscosity of the copper smelting slag in the Mitsubishi ...

smelting slag, such as alumina and magnesia, can fluctuate in short term basis resulting in changes of slag viscosity. This sometimes increases the slag loss. In the process, the silica sand and limestone flux additions can be easily adjusted, and melt temperature can be precisely controlled.

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US4046541A - Slag quenching method for pyrolysis furnaces ...

A process for quenching molten residue discharged from a furnace hearth, through a non-submerged taphole, including the steps of: (a) providing a vertical slag duct in sealed communication at the top with the taphole and sealed at the bottom by being immersed a substantial distance into water in a quench tank, (b) flowing the molten residue from the hearth by gravity down the central axis of said slag duct .

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Properties and Uses of Steelmaking Slag – IspatGuru

Nov 14, 2018 · Fig 1 Processing of steelmaking slag. As steelmaking slag is formed, it is in a molten or red-hot state at temperatures ranging from 1,300 deg C to 1,700 deg C. This slag is immediately subjected to the cooling process upon removal. Usually, this is performed in a cooling yard by air cooling and moderate water sprinkling.

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Degradation mechanism of slag blended mortars immersed in ...

When slag blended mortar is immersed in sodium sulfate solution, the sulfate ions penetrating into samples are mostly fixed by aluminate phases in a relatively narrow region close to surface, due to the refinement of pore size and buffering effect by slag addition.

Recovery of cobalt, nickel, and copper from slags, using ...

Large quantities of valuable metals are present in the huge dumps that have built up over many years of operation of nickel and copper smelters. Slags are sometimes treated by slow cooling, milling, and flotation. This approach is satisfactory when the metals in .

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Urban Dictionary: Slag

1) - to spit. 2) - a woman whom sleeps around, looks cheap &/or has questionable character. 3) - the waste product of the steel making process.

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STUDY ON STIRRING BEHAVIOR OF LIQUID STEEL IN .

eters, insertion depth of immersed cylinder and bottom gas flow rate on the flow state of liquid steel and the ampli-tude of liquid steel surface are numerically simulated for 150t ladle. The results show that the slag entrapment of liquid steel surface can be confined by changing the diameters and insertion depths of immersed cylinder. The ef-

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Electro Slag Strip Cladding Process - SlideShare

Sep 18, 2014 · The precise value will depend on the properties of the flux and the dimensions of the strip. Arcing may be experienced if the voltage is too high and the electrode is not immersed far enough in the slag pool. The welding process will turn out to be unstable with increased arcing.

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US Patent for Immersion device for slag sample collection ...

An immersion device for collecting a slag sample and measuring a molten metal parameter is provided. The immersion device includes an inflow conduit for directing the molten slag to a slag sample chamber and a measuring element for measuring the parameter of the molten metal.

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Dry Granulation of Blast Furnace Slag - steel-360

Dry slag granulation process is essentially to atomize the liquid slag and then to cool the particles rapidly so as to produce a glassy slag. Heat is recovered from the slag in the following ways. As the spray of slag particles moves outwards from the atomizer, heat is lost by radiation to the vessel and by convection to the air moving through the vessel.

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Slag Probes - heraeus

Slag sampling in BOF and steel pouring ladle QUSAS is applied and immersed as a regular sampler. When QUSAS passes through the slag surface into steel, slag is collected in its chamber and compressed to a lollipop shape protected by an outer steel ring.

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Steel Slag - User Guideline - Granular Base - User ...

Until process-control testing indicates that the steel slag aggregates are suitable for use in granular base, it is recommended that additional aging and reprocessing be required. Placing and Compacting. The same methods and equipment used to place and compact conventional aggregate can be used to place and compact steel slag.

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STATE OF THE ART IN VAR AND ESR PROCESSES – A .

resistance signal when the electrode is immersed in the slag. Therefore the resistance signal tells the history of slag re-melting and the operator uses this value to get a better understanding of the process. The resistance value does not change with the power input or furnace size as the voltage will do.

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NSA 172-13 Slag and Its Relation to Corrosion of Ferrous M.

Slag, in the presence of water, forms an alkaline solution and alkaline solutions are not very aggressive at pH's of 9 or 10. If the pH of the solution goes up to 11, steel can become quite passive to corrosion. Corrosion is limited because the compounds of calcium and magnesium in the slag are alkaline.

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SLAG ANALYSIS SOLUTIONS - Bruker

Optimum slag viscosity • The most important factor affecting slag viscosity is the presence of suspended second phase particles (MW & C2S) in the slag FeO content of the slag • Sufficient FeO in the slag is required to react with carbon and generate CO gas bubbles • Too much FeO is equated with iron loss MgO content of the slag

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Gold Smelting & Refining Process

In general, slag from smelting process arises from extraneous materials such as rust and oxides; oxidation of elements in the charge (e.g. iron, copper, zinc); residues from fuels; fluxes employed in the process (silica, borax, sodium nitrate, sodium carbonate, fluorspar); crucible erosion.

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