THIS INVENTION relates to the extraction of platinum group metals PGM from ores More particularly the invention relates to a process for the extraction of platinum group metals PGM from an ore such as a chromite ore containing economically viable concentrations of PGM.
Converter processing of platinum group metals A thermodynamic model of copper P S converter and a viscosity model of converter slag have been developed to simulate the slag blow and copper.
The process may include as a preliminary step prior to the smelting step of subjecting a particulate PGM containing ore to flotation to produce a PGM concentrate and oxide containing tailings which are separated from each other the PGM concentrate being employed as a feed to the smelting step.
The ore may be of the type known as Upper Group 2 UG2 which has a chromite matrix Instead the ore may be a mixture of the UG2 ore and a Merensky ore which contains chromite levels of less than 1 by mass While the process can be used for any chromite content it is envisaged that the process will usually be used for treatment of PGM containing ores having a chromite content of 0 01 50 by mass typically 30 45 by mass e g 40 45 by mass the PGM concentrate produced by such ore typically having a chromite content of 0 1 10 by mass e g 2 6 by mass.
Separating the matte and the spinel rich slag from the oxide rich slag may comprise separating the oxide rich slag in the melt from the spinel rich slag in the melt and withdrawing the spinel rich slag and the matte from the melt.
More particularly separating the matte and the spinel rich slag from the oxide rich slag may comprise allowing the melt to separate into an uppermost oxide rich slag layer a lowermost matte layer and an intermediate spinel rich slag layer tapping spinel rich slag and matte at a low level from the melt and tapping oxide rich slag at a high level from the melt.
More particularly the process may include arranging two or more ladles in series such that each ladle is in fluid communication with an adjacent ladle The molten matte having a higher density and a lower melting point than that of the spinel rich slag will collect at the bottom of each ladle prior to being transferred to the conversion stage Conveniently the spinel rich slag may be reprocessed separately from the smelting step to recover the PGM residues therefrom the oxide rich slag being discarded.
According to a second aspect of the invention there is provided an installation for use in the extraction PGM the installation comprising a smelting stage for receiving PGM concentrate and for smelting the concentrate to obtain a PGM matte a spinel rich slag and an oxide rich slag and a conversion stage for receiving PGM matte from the smelting stage and enriching it with regard to its PGM content the installation including a separation stage between the smelting stage and the conversion stage for separating slag from matte fed from the smelting stage to the conversion stage.
The installation may include a flotation stage for receiving a particulate PGM containing ore carrying out a flotation step on the PGM containing ore to obtain a PGM concentrate and for feeding the PGM concentrate to the smelting stage.
A slag cleaning furnace treats gangue from the converter while a slag milling and flotation circuit treats the slag from the electric furnaces Wet concentrate with an average moisture content of 16 17 by mass is delivered by road in flexi side tippers or containers and offloaded in.
Hearth and is covered by a slag phase which contains the gangue species and a minimum amount of PGMs The PGM rich sulphide matte is tapped from the furnace and sent to the converter and the slag is tapped granulated ground and the entrained PGMsulphide minerals recovered by flotation The flotation concentrate is returned to the.
The platinum group metals in a molten sulphidic matte phase in the furnace Furthermore the quantity of from a milling flotation process for the treatment of revert DC arc smelting furnace platinum PGM revert tailings converter slag ConRoast 34 PLATINUM ADDING VALUE Environmental benefits of demonstration scale testwork It is.
Slag fine flotation cell for sale oceanview761 co za Get Price bf flotation cell hot sale machine gold of china and it is widely used inIt is widely used for secondary and fine crushing in the industry of mining building ore coke lump coal slag mineral slag cement clinker fireproof materials and so on machine ball mill magnetic separator flotation machine mineral processing.
Flotation of pgm converter slag The second route was flotation of the slags roasting of the flotation tailings with pyrite and leaching The second route was found to be suitable for the treatment of the copper slag studied In the flotation step a copper concentrate containing approximately 11 Cu was produced with a 77 recovery while 93.
Jan 01 2020nbsp018332Slag cleaning can be divided into two types first being the pyrometallurgical reduction and settling of liquid slag which is performed in slag cleaning furnaces and the second type being the mineral processing based slag cleaning of solidified or granulated slag by crushing andor grinding followed by gravity concentration or froth flotation.
Abstract Aiming at the recovery of copper from smelting slag a flotation approach was studied It was found that this slag composed of fine particles with complex association and distribution in which bornite was the main copper bearing mineral after a detailed mineralogy analysis via.
Copper flotation from converter slags aug 25 2016 the copper recovery can be flotation process plant south africa rock crusher quarry copper flotation process in malaysia crusher machine Details The Recovery Of Copper From Smelting Slag By Flotation Abstract aiming at the recovery of copper from smelting slag a flotation approach was studied it was found that this slag composed of fine.
PDF Recovery of Copper and Cobalt from Converter Slag Roasting of copper converter slag containing 4 03 copper 1 98 nickel and 0 48 cobalt with ammonium sulphate open to atmosphere has been carried out in order to achieve sulphation of copper Inquire Now Froth flotationWikipedia Froth flotation is a process for selectively separating.
Copper Flotation From Converter Slags copper recovery from slag in pakistan bareillynagarnigamin A study on the recovery of Cu Co Ni and Zn from copper converter slags by 90 of furnace treatment or slag flotation in order to recover copper.
We have sulfuric acid slag mining copper flotation machine Copper extraction refers to the methods used to obtain copper from its conversion of copper consists of a series of physical and electrochemical processes Methods have evolved and vary with country depending on the ore source local environmental regulations and other factors.
Copper Flotation From Converter Slag Recovery of copper from copper slag and copper slag flotation Copper smelter slag and copper smelter slag flotation tailings Chat Online copper flotation from converter slags Grinding Mill The Gulin product line consisting of more than 30 machines sets the standard for our industry We plan to help you meet your needs with our equipment.
Laboratory batch flotation tests were conducted on copper converter slags to evaluate the relative merits of recovering copper from slow cooled versus water quenched slags Three slags containing 1 6 5 0 and 6 6 percent copper were used More than 90 percent of the copper was recovered in a rougher concentrate leaving a 0 2 to 0 3 percent.
Recovery of cobalt from converter slag of Chambishi Copper techniques such as slag cleaning slow cooling of the slag followed by milling and flotation are inappropriate for cobalt recovery from converter slag 78.
The slag from this operation has a PGM content too high 2 5 to 3 5 gt to be discarded so it is granulated and returned to the flotation circuit for the recovery of the PGMs Lime or limestone is sometimes used as a flux to improve the compatibility of the slag with the basic refractory lining.
Nickel copper converter slag A 100 kVA and 200 kVA Using converter slag from a nickel copper plant tests were carried out in 1990 on a 100 kVA furnace operated at 30 kW and on a 200 kVA furnace operated at 85 kW at low additions of reductant in order to minimize the reduction of iron.
Sulphides are removed in the ACP converter A slag cleaning furnace treats gangue from the converter while a slag milling and flotation circuit treats the slag from the electric furnaces The concentrate handling section currently treats around 72 000 t of wet concentrate per month The electric furnaces smelt between 42 000 and 60 000 t.
Keywordschromatite PGM flotation recovery tonnage feed mass pull grades product tails time I INTRODUCTION he Bushveld complex in South Africa is the largest known Read more Low Cost Highly Efficient Recovery of Platinum Group Metals PGM.
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