pper flotation use of lime

2021-07-01T04:07:38+00:00
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  • copper flotation use of lime - voveriugiraite.lt

    Copper Flotation Use Of Lime - guertel-xxl.de. Copper Flotation Use Of Lime. The copper grade is 0.63, and arsenic is 0.03.Due to the raw ore has low copper grade and high arsenic, the investment of traditional flotation of copper smelting is too large, the cost is too high, the pollution is serious and so on.From 2000 to 2004, the plant uses reasonable microbial selected copper production ...

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  • Lime use and functionality in sulphide mineral

    2019-11-1  At Silver Queen mine (Canada) a combined lime-starch-SO 2 conditioning scheme is used for copper flotation from the Pb/Zn sulphides (Bulatovic, 2007b). In the process, lime (1200 g/t) and starch (200 g/t) are used first, at pH 10.5–11.2, after which the pH is reduced to 5.5 with SO 2 (200 g/t) and the copper sulphide floated.

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  • Copper Flotation - 911 Metallurgist

    2016-5-16  When pyrite is present, lime performs the additional function of a depressor, the amount used being balanced against that of the promoter—that is, no more lime should be added than is required to prevent the bulk of the pyrite from floating, as any excess tends to depress the copper minerals, and no more of the promoter should be employed than is needed to give a profitable recovery of the valuable minerals in a concentrate of the desired grade, since any excess tends to bring up pyrite.

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  • Lime in Flotation and Recovery Processes Graymont

    Lime in Flotation and Recovery Processes. Both quicklime and hydrated lime are widely used in the flotation or recovery of non-ferrous metals, including copper, zinc, nickel and lead-bearing ores. Lime is used extensively in the recovery of gold and silver. Ores, either run-of-mine, milled, autoclaved or roasted, are combined with lime and a ...

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  • Lower-pH Copper Flotation Reagent System

    2021-6-26  The process reduces or even eliminates both the lime used in copper flotation and the accompanying carbon dioxide. The result is immediate cost, energy, and environmental savings along with improved recovery of copper and other minerals. Impact of Commercialized Technology

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  • Copper Sulfide Flotation - 911 Metallurgist

    2016-4-13  Copper Flotation Reagents. Lime is usually added to the ball mill feed by a Dry Reagent Feeder. The frother and promoter are added in the classifier prior to flotation to realize the full effect of the reagent. Reagents can also be stage- added to the cells in the flotation

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  • Optimization of a Copper/Molybdenum Flotation Circuit

    2020-6-16  conducted using the most common selection of reagents: xanthate and lime to recover copper and reject iron to establish a base test to compare other reagent schemes with. This work included flotation reagents such as dithiophosphate, thiocarbamate and AERO 3302 promoter as chalcopyrite collectors, fuel oil as molybdenite collector, and sodium

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  • Copper Flotation - Elmhurst University

    2015-4-10  The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees --

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  • The role of sodium sulfide in the flotation of pyrite ...

    2018-4-1  Lime is the most commonly used pH modifier to depress pyrite in copper flotation (Mu et al., 2016a, Mu et al., 2016b). The depression mechanism of pyrite by lime is attributed to the formation of hydrophilic species such as Ca(OH) 2 , Fe(OH) 3 and CaSO 4 ( Hu et al., 2000 ).

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  • The Magic Effect of Lime in Mineral Processing - JXSC

    2021-2-20  Lime in flotation operations, usually used in the ball mill feed belt with lime powder or in the flotation before the chemical mixing tank with lime milk or lime powder and other forms. The role of lime in the flotation process, the most obvious appearance is the impact on the nature of the flotation froth.

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  • Lower-pH Copper Flotation Reagent System

    2021-6-26  Lime produces scaling in piping and equipment, requiring the use of descaling reagents. It flocculates fine material and may occlude fine copper-sulfide particles. Lime increases the viscosity of the mineral slurry and tends to hinder aeration, slowing flotation kinetics.

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  • Lime in Flotation and Recovery Processes Graymont

    Lime in Flotation and Recovery Processes. Both quicklime and hydrated lime are widely used in the flotation or recovery of non-ferrous metals, including copper, zinc, nickel and lead-bearing ores. Lime is used extensively in the recovery of gold and silver. Ores, either run-of-mine, milled, autoclaved or roasted, are combined with lime and a ...

  • Get Price
  • Optimization of a Copper/Molybdenum Flotation Circuit

    2020-6-16  specific use of lime, in rougher flotation was conducted. Specifically, the goal was to determine an effective alternative to pH adjustment using lime. Experiments were conducted using the most common selection of reagents: xanthate and lime to recover copper and reject iron to establish a base test to compare other reagent schemes with.

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  • Copper Flotation - Elmhurst University

    2015-4-10  The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees --

  • Get Price
  • Flotation of low grade copper ore from Kallur, Raichur ...

    2011-12-15  of 93.78 %. However, the use of lime as a depressant for pyrite had an adverse effect on the beneficiation of copper ore as revealed from Fig. 4. With increase in lime concentration, the S.I. decreased drastically to 19.16 with a low recovery of 77.75% Cu at 1.5 Kg/T of lime there-by prohibiting the further use of lime during flotation.

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  • LIME CONTROL METHOD FOR HIGHLY ALKALINE

    KENNECOTT COPPER CORP,US. 137/93. Klinksiek, Henry T. Mallinckrodt Mallinckrodt. 1. A method of controlling lime additions to an alkaline flotation circuit operating on a sulfide mineral ore in order to substantially maintain a predetermined degree of alkalinity in the flotation pulp of such circuit at or above a pH of about 9, comprising ...

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  • (PDF) BULK FLOTATION OF COMPLEX COPPER ORE

    The use of a lime circuit is practically universal in the flotation of copper ores. Lime alkalinity is generally maintained in the pH range of 9.5 to 11.5. The higher pH serves to depress the iron sulfide gangue minerals which are commonly present. The pH can also influence the froth structure and floatability of the copper minerals.

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  • Lime in Gold Ore Mining Process Flotation,

    2019-8-3  When flotation of various non-ferrous metal sulfide minerals (such as copper, lead, zinc, etc.) with xanthate collectors, the ore usually contains a certain amount of iron sulfide minerals, such as pyrite, marcasite, pyrrhotite, arsenopyrite, etc., inhibiting iron sulfide minerals with lime helps the target minerals to

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  • Sensitivity of pentlandite flotation in complex sulfide ...

    2014-3-10  The copper grade–recovery curve obtained for the soda ash system is lower due to bulk flotation tendencies of chalcopyrite and pentlandite (Fig. 7, Fig. 8) and also considerable amount of pyrrhotite flotation that dilutes the copper grade significantly. In the case of nickel grade, the lime system shows the poorest grade and recovery to the ...

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  • An overview of the use of chemical reagents in

    2005-2-1  Lime is a panacea throughout the industry, being used for pH adjustment, coagulation, heavy metal precipitation, causticisation and depression of pyrite in flotation. Sulphuric acid is also used for pH adjustment but more importantly for the leaching of oxide copper, lateritic nickel, zinc calcine, titanium dioxide from ilmenite and uranium ...

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  • Copper Flotation - Elmhurst University

    2015-4-10  The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees --

  • Get Price
  • Reduction of pH modifying agent in the flotation of

    Additionally, lime by itself, or in conjunction with a sulfoxy reagent, acts to depress certain minerals. For example in complex copper/lead/zinc ores, lime with or without sulfoxy reagents acts to depress sphalerite, pyrite and pyrrhotite. A typical flow chart for a conventional flotation process using lime for pH adjustment is shown in FIG. 1.

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  • Flotation of low grade copper ore from Kallur, Raichur ...

    2011-12-15  of 93.78 %. However, the use of lime as a depressant for pyrite had an adverse effect on the beneficiation of copper ore as revealed from Fig. 4. With increase in lime concentration, the S.I. decreased drastically to 19.16 with a low recovery of 77.75% Cu at 1.5 Kg/T of lime there-by prohibiting the further use of lime during flotation.

  • Get Price
  • LIME CONTROL METHOD FOR HIGHLY ALKALINE

    KENNECOTT COPPER CORP,US. 137/93. Klinksiek, Henry T. Mallinckrodt Mallinckrodt. 1. A method of controlling lime additions to an alkaline flotation circuit operating on a sulfide mineral ore in order to substantially maintain a predetermined degree of alkalinity in the flotation pulp of such circuit at or above a pH of about 9, comprising ...

  • Get Price
  • (PDF) BULK FLOTATION OF COMPLEX COPPER ORE

    The use of a lime circuit is practically universal in the flotation of copper ores. Lime alkalinity is generally maintained in the pH range of 9.5 to 11.5. The higher pH serves to depress the iron sulfide gangue minerals which are commonly present. The pH can also influence the froth structure and floatability of the copper minerals.

  • Get Price
  • MARUTI LIME-CHEM INDUSTRIES :: Uses of Lime ::

    2014-5-3  Lime is a key component in a number of nonferrous metal applications. Ore Concentration. Both quicklime and hydrated lime are widely used in the flotation or recovery of many non-ferrous ores--in particular copper ore flotation in which lime acts as a depressant (settling aid) and maintains proper alkalinity in the flotation

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  • INVESTIGATION OF EFFECTIVE PARAMETERS FOR

    2014-5-13  of lime used. 1. Flotation of copper at different pH is associated with the type of frother used. With certain frothers, copper recovery can be significantly increased at a lower pH range while some frothers need a higher pH to keep a more lasting frothing power.

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  • pH Control in Copper Flotation Application Note for ...

    2021-6-18  Copper ore may be separated from crude ore using a flotation pro-cess that takes advantage of the physical (as opposed to chemical) properties of small copper ore particles. To maximize the copper yield, pH control is necessary in the flotation tanks. The copper flotation process Crushed ore, along with water and lime slurry, is fed into a ball ...

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  • Depression of pyrite in porphyry copper flotation

    2014-12-18  Limited depression of pyrite with lime Flotation tests on plant rougher con (60% Cp, 18% Py) (Ore 1) Pyrite is Cu and xanthateactivated 0 20 40 0 4 8 12 16 20 time [min] pH 12 with Lime baseline (pH 10) 0 20 40 0 20 40 60 80 100 Chalcopyrite Recovery [%] pH 12 with Lime baseline (pH 10)

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  • Non-ferrous metallurgical processing - Minerals and

    2 天前  Lime products play a key role in the mining and extraction of non-ferrous metals, including aluminum, copper, gold, nickel, cobalt, uranium, titanium and lithium. Lime is also important for the pyrometallurgical refining and smelting of several non-ferrous metals. In addition, lime products are used in effluent and tailings treatment, and in settling, dewatering, filtration,

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