copper flotation use of lime

Optimization of a Copper/Molybdenum Flotation Circuit by ...

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.

Lower-pH Copper Flotation Reagent System | Department of ...

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.

The effect of clay minerals on the process of flotation of ...

Secondly, the presence of pyrite in copper ores requires the use of lime in such a way as to avoid the flotation of this iron sulfide mineral. Previous studies show that calcium generates an effect that boosts the negative effect of clays in the flotation process of copper ores. This is an important difference compared to other applications.

Flotation of Copper-Lead-Zinc Ores - ResearchGate

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 ...

(PDF) BULK FLOTATION OF COMPLEX COPPER ORE | Khmer Lee ...

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.

Lime use and functionality in sulphide mineral flotation ...

Although pH control and the use of lime at high concentration may: (i) not always be sufficient to depress pyrite, and (ii) negatively affect Cu and Mo recovery, adding lime is still the most common strategy adopted in the industry, with only a few copper flotation plants adopting other solutions (e.g. intense aeration, addition of ...

lime usage for copper mining

use of lime in copper leaching Mining. The copper industry uses lime as an agent for pH regulation in heap leaching and the flotation process. In aluminum processing, lime is essential in the processing of copper mining and processing from mine to copper plate.get price

Flotation in Seawater | SpringerLink

The successful flotation of Cu-Mo ores typically requires depression of pyrite at high pH values achieved with the use of lime. However, in seawater, flotation of Cu-Mo ores requires removal of the hydrolysis products of the Mg2+ and Ca2+ ions or the use of a pyrite depressant that can be effective over the pH ranges that are much below the pH ...

Froth flotation - Wikipedia

Froth flotation is a process for selectively separating of hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

An overview of the use of chemical reagents in mineral ...

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 ...

Copper Flotation - Mineral Processing & Metallurgy

A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more parallel ...

Flotation of indium-beard marmatite from multi-metallic ...

Flotation kinetics of Dulong marmatite ore in cleaner flotation. 4. Conclusions From the experimental study, a new chemical scheme is presented for the flotation of Dulong indium-beard marma-tite from ores, which use the mixture of copper sulfate and X-1 as the activator and butyl xanthate as the collector at pH 10.

Barrick Gold Corporation - New Technology Uses Salt Or ...

Patented process in use at Saudi Arabia mine and in Chile Flotation froth of copper concentrate during laboratory testing in Santiago, Chile Barrick has developed and patented a new flotation process that can produce copper concentrates from copper or copper-gold ores using salt or brackish water. The new process, an air-metabisulfite treatment, does not require lime or cyanide.

Common Questions About Froth Flotation Process Technology

Embedded in a cloth of complicated Cu-Pb-Zn sulphide ore froth flotation process, the use of the potential regulation flotation technology of whole process priority, with lime slurry potential and adjustment to the LP - 01, SN - 9 + aniline aerofloat and butyl xanthate were collecting copper, lead, zinc, and use a combination of zinc sulfate ...

Current Status of Copper-Ore Processing: A Review ...

The use of flotation machines with a chamber volume of 630 m 3 at a rougher flotation stage improved recovery by more than 3% at the Buenavista del Cobre (BVC) plant in Northern Mexico and increased the copper content in concentrate by 24%. In flotation machines with the Outotec FloatForce mixing mechanism (Finland), the contact between bubbles ...

Copper Ore Flotation Cell The

Mar 15 2019 · Secondly the presence of pyrite in copper ores requires the use of lime in such a way as to avoid the flotation of this iron sulfide mineral Previous studies show that calcium generates an effect that boosts the negative effect of clays in the flotation process of copper ores

1 Froth Flotation – Fundamental Principles

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...

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 ...

Lime in Gold Ore Mining Process | Flotation, Cyanidation ...

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 …

(PDF) A Review of the Flotation of Copper Minerals

The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance ...

Pyrite Processing | Equipment, Process Flow, Cases - JXSC ...

2. Priority flotation of copper, tailings zinc and sulfur. After the copper concentrate is preferentially selected, the copper tailings directly use lime to adjust the pH of the pulp to suppress sulfur, copper sulfate, and activate zinc minerals. When the amount of lime is greater than 3kg / t, the pulp is alkaline and the pH is greater than 12.2.

(PDF) Optimization of reagent dosages for copper flotation ...

Optimization of reagent dosages for copper flotation using statistical technique. Download. Related Papers. Recovery improvement of coarse particles by stage addition of reagents in industrial copper flotation circuit. By Ahmad Hassanzadeh. A study on selective flotation in low and high pyritic copper …

Water Consumption at Copper Mines in Arizona

reagent like lime to increase the pH from 7 (natural water) to 10 or 11. The resulting product contains about 20% to 40% copper, depending on the minerals involved. The flotation process is conducted with a solids concentration of between 25% and 40%. The overall water

Flotation Regulator: PH Regulators, Activators ...

The reason why lime inhibits pyrite is the formation of a hydrophilic film of Fe(OH)2 and Fe(OH)3 on the surface of the mineral. For pyrite inhibited by lime, sodium carbonate and copper sulfate can be used, or sulfuric acid can be added to adjust the pH of the pulp to 6-7, and the pyrite can be floated again. 2. Sodium Carbonate

Froth Flotation - an overview | ScienceDirect Topics

For instance, lime is a depressant for pyrite (FeS2) in the flotation separation of copper sulfides. Lime would normally be added to the grinding circuit of a copper concentrator some time before flotation is carried out, for oxidation of the pyrite and the pH regulating effect to take hold.

Improve Copper Yield in Flotation Tanks

and chemical properties of small copper ore particles. To maximize the yield of copper, pH control is necessary in the flotation tanks. Crushed ore (containing 1 to 2 % copper), along with water and a lime slurry, is fed into a ball mill. This rotating drum contains steel balls that further crush the ore to a fine powder. When the ore / lime

Copper Mining Process Flow Diagram | Pumps

Verder offers the following pump solutions in the COPPER MINING process. Primary flotation. VERDERFLEX DURA PERSITALTIC PUMPS: ± 99% Accurate dosing. Secondary flotation. VERDERFLEX DURA PERSITALTIC PUMPS: ± 99% Accurate dosing. VERDERMAG CENTRIFUGAL MAGDRIVE PUMPS: Chemical transfer. VERDERHUS SCREW CHANNEL PUMPS: Pumping of …

Flotation Reagents - Mineral Processing & Metallurgy

In the table on the opposite page the column refers to undiluted flotation reagents such as lime, soda ash and liquids with a specific gravity of 1.00. Ninety-two per cent is usually used for light pine oils, 27 per cent for a saturated solution of copper sulphate and 14 per cent for TT mixture (thiocarbanilide dissolved in orthotoluidine).

What's the Best Way to Remove Copper from Industrial ...

While there are other types of flotation, including ion flotation and precipitation flotation, DAF remains the most popular type of flotation technology for the removal of copper and other metals. Among the benefits of DAF are high efficiency and selectivity for copper removal, short retention time, low operational costs, and smaller, more ...

Separating Minerals by Floatation

Copper processing example A high pH is important in the processing of copper ore to maximize this mineral's floatation properties. Most copper ore slurries tend to be acidic. Plants typically add lime to the slurry in the mill or floatation circuit, increasing its alkalinity. A typical copper operation contains many floatation cells, often

(PDF) Copper minerals flotation in flotation plant of the ...

Examined copper concentrate from flotation plant of the "Rudni k" mine contained 24%. of copper, 5,5% of zi nc and 4,5% of lead. By copper content this is a high-quality. concentrate. However ...

US4460459A - Sequential flotation of sulfide ores - Google ...

A sequential flotation process for the recovery of high-grade concentrates of copper, lead and cobalt-nickel from sulfide ores is provided. A primary grind ore pulp is conditioned with SO 2 as H 2 SO 3 under intense aeration, and the conditioned pulp subjected to sequential flotation, with regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step for copper.

Copper Sulfide Flotation - Mineral Processing & Metallurgy

Copper Sulfide Flotation Reagents. Lime is added to the Ball Mill by a Cone Type Dry Reagent Feeder. Other reagents, such as cyanide, xanthate, and a frother are fed and controlled by No. 12A Wet Reagent Feeders to the classifier and to the conditioner ahead of flotation. Sampling. Automatic Samplers are provided for the sampling requirements.