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Heat Drying The Copper Slag

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Partial Replacement Of Fine Aggreggate By Copper Slag

The copper slag is a hazardous waste which is generated from the cleaning process of copper converter slag or smelting slag in an electrical furnace. Generally, 2.0−3.0 t of copper slags are generated per ton of copper produced in the copper pyrometallurgical process, and approximately 30 million tons of slags are deposited every year in the.Jun 24, 2021 The molten slag is poured onto a spinning, water-cooled copper disk or cup and dispersed to small particles of approx. 900 C via centrifugal force. The heat is recovered in a consecutive step via hot air up to 600 C.

Tapping Hot Slag For Energy Primetals Technologies

Apr 09, 2010 Fossil fuel and or oxygen fired burners provide the exothermic heat required to melt the copper ore which is supplied by conveyor to a gas tight hopper. It has a tapping point for the molten copper and slag. There is normally a waste heat boiler incorporated in the reverb furnace as a lot of heat is applied in this smelting process.Sep 20, 2017 Average specific heat of the copper slag is 1100 J K −1 kg −1, and average specific heat of the DRI is 460 J K −1 kg −1. The input enthalpy of system is 1320 MJ, and the output exergy of system is 1070 MJ. The input enthalpy and exergy of pellet before reduction are.

The Use Of Copper Slag And Polypropylene Fiber

3. Development of Slag Heat Recovery Process 3.1 Design of Slag Heat Recovery Pilot Plant The slag heat recovery pilot plant which was built in this development is a counterflow packed bed-type heat exchanger like the one used in coke dry quenching (CDQ). However, when compared in the same condi-tions (same volume and charging temperature), the.Enhance cooling of the slag, the cooling rolls are made of copper material and are equipped with internal water cooling. Assuming a supply rate of 1 t min for the mol-ten slag and a thickness of about 5 mm for the slag when solidified, we designed large-scale rolls with an outer diameter of.

(pdf) Heat Recovery From Slag Through Dry Granulation

Copper Slag Copper slag is a by-product obtained during matte smelting and refining of copper. The slag is a black glassy particle and granular in nature and has a similar particle size range like sand. It has good pozzalonic properties. The copper slag was brought Ernakulam, India. Mineral Admixtures.Transform copper sulphide concentrate into blister copper, as follows • Wet concentrate drying down to 0.2 wt. moisture • Smelting bone dried concentrate and partial converting to white metal • White metal converting to blister copper • Slag cleaning directed to recover copper from the slag produced during the smelting and partial.

Copper Slag Suppliers In India At Low Price For Sale

Rotary Louvre dryers can also be arranged for multi-stage drying, or drying and cooling in one Unit. DRYER PRINCIPLE Co-current Flow Rotary Cascade Dryers, sticky and heat sensitive materials, since the wet material IS exposed to the highest temperature gases, the initial heat transfer rate is very high, rapidly evaporating surface moisture.Copper slag is a by-product created during the copper smelting and refining process. As refineries draw metal out of copper ore, they produce a large volume of non-metallic dust, soot, and rock. Collectively, these materials make up slag, which can be used for a surprising number of applications in the building and industrial fields.

Apparatus For Heat Recovery From Molten Slag (patent

Optionally, heat exchanger 27 can be directly in line with heated gas generator 5 in the manner depicted in FIG. 4. FIG. 4 depicts a method for safely drying copper sulfide concentrates in gas suspension or fluid bed dryers in which the inlet gas temperatures of the dryer are above the ignition point of the copper.Copper slag is a voluminous waste material obtained during the manufacturing of copper (matte smelting process). Properties Copper has a melting point of 1083.4 + - 0.2 C, boiling point of 2567 C, specific gravity of 8.96 (20 C), with a valence of 1 or 2. The effects of these two fillers on the mechanical properties of bamboo-epoxy.

Method For Drying Copper Sulfide Concentrates

Replacement of Copper Slag used as Abrasive Blasting Media in Ship F. Dry Ice Pellets Dry ice remove the rust ,paint and get evaporated after the blasting due to the heat generated during the blasting operation It leaves paint chips scales and rust which is removed by vaccum and collected for disposal.A method for rapidly reducing copper slags to produce iron-copper alloys in a kiln in a reducing atmosphere is characterized by including the steps proportionally mixing the copper slags, reducing agents and additives, crushing or levigating the mixture to 200 meshes to obtain 20 -40 of residues on sieve doping agglomerants and water occupying 5-20 of all materials on a dry mass basis.

Energy Recovery From High Temperature Slags Sciencedirect

Sep 01, 2011 The waste heat of slags amounting to ∼220 TWh year at temperatures in the range of 1200–1600 C, presents an opportunity to lower the energy intensity of metal production.Heat recovery equipment such as CDQ (coke dry quenching) were constructed subsequently. In this study, we propose combining a twin roll method for slag solidification and a packed bed method for heat exchange from slag to air in order to realize efficient recov-ery of the sensible heat of slag, which has low thermal con-ductivity.

Copper Losses To Slags Obtained From The El Teniente

The heat transfer in the slag valve is largely due to two mechanisms (1) slag in contact with the copper, and (2) cooling water on the copper. The heat transfer from the slag was represented by a convection heat transfer coefficient, on two faces of the copper. The heat transfer between the copper and the water in the internal water passages was.Ores are processed directly to impure black copper ( 95 wt Cu) and to a copper-rich slag. The two ore types can be smelted together to produce matte and a slag with low copper content. Another product is top gas, which contains flue dust. Ores that contain high concentrations of arsenic and.

Background Report Primary Copper Smelting

Heat generated in blister copper stage = 4.4 x kcal minute Do Yourself -I The slag from a copper converter contains the following The flux carries 75 , 5 Fe , and 2 The matte charged is 40 tons of 34 copper grade. The flus is added in batches of 3000 kg the converter is blown to slag of the above.Injected into the converter via a lance submerged in the slag. Converter matte is tapped and bottom cast into moulds, slow-cooled, crushed, and despatched to the refineries. Slag is granulated and dried for recycling to the slag-cleaning furnace. ACP slag is fed to the slag-cleaning furnace along with a reductant and a sulphur source.

Properties Of Self Compacting Concrete Made With

This loss of heat made supplemental fuel necessary. Slag and matte from the smelting furnace flow by gravity in a launder to the electric slag cleaning furnace. The copper content of the slag is maintained at 0.5 to 0.6 percent Cu by maintaining a reducing atmosphere in the slag cleaning furnace.Layer of slag, which floats on top of the molten matte, and much of the sulfur in the charge is released as sulfur dioxide (SO 2). The slag is frequently skimmed, and the matte is periodically tapped. Heat required for the melting process comes from partial oxidation of the sulfide charge as well as the burning of.

Replacement Of Copper Slag Used As Abrasive Blasting

Mar 06, 2019 1. Introduction. Copper slag (CS) is a by-product generated in the process of copper smelting and converting [].It has been estimated that for every ton of copper produced, there are about 2.2–3 tons of CS generated [], resulting in an annual generation rate for the slag of approximately 40 million tons worldwide [].Over recent decades, substantial effort has been invested for reusing this.The resultant bricks have high heat storage capacity and thermal shock resistance. CONSTITUTION The heat storage bricks are manufactured by mixing 30-70wt. of copper slag, 30-70wt. of clay and water glass(5-10 ), aging for 1-7days, forming into a brick shape, drying at 50-90deg.C, and sintering at 750-1150deg.C for 15-30hrs.