The Direct Leaching of Nickel Sulfide Flotation Concentrates …
Inco (now Vale) operated a modified Caron process between 1956 and 1982 and extracted iron, sulfur, Ni and Cu from pyrrhotite concentrate recovered from the Copper Cliff or Clarabelle mills in the form of iron oxide pellets, sulfuric acid, nickel oxide (NiO) and copper sulfide (CuS) (Conard Citation 2013; Rezaei et al. Citation 2017).
Basic Principles & Variables Affecting Froth Flotation
Grade of concentrate. Rate of flotation. Froth. (a) Copiousness. (b) Consistency. (c) Size of bubbles. ... as is the case with partially oxidized copper ores, be prohibited on account of the destructive effect of the resultant copper sulphate solution on the iron with which the pulp comes in contact in the mill, in which case an alkaline or ...
Chloride leaching of silver and lead from a solid residue …
Chemical compositions of flotation copper concentrate from Lubin (1) ... The content of silver in copper and iron sulfides may be in the range from 0.7 to 2.7% by volume.
Selective impurity removal and Cu upgrading of copper flotation
The gradual decrease of global copper resources is among the most urgent challenges for the mining industry. Sustainable utilization of copper sulphide flotation concentrate from iron oxide copper gold (IOCG) deposits is often constrained by the impurity elements (e.g. U, Th and F) and high levels of gangue minerals (e.g. iron oxide/hematite, U-bearing …
Froth Flotation Process
Froth Flotation Handbook The copper concentrate from a copper lead zinc flotation circuit. ... For example, ores containing the sulphide minerals of lead, zinc, and iron, can be treated to yield three successive concentrates, wherein each class of minerals is recovered separately more or less uncontaminated by the others.
Gold Flotation
This reagent was developed especially for the flotation of oxidized copper ores. ... It is essential to keep pulp containing iron (not hematite) and manganese oxides in a dispersed Condition, and improve results are obtained by means of a depressing agent such as starch. ... Cyanidation of a flotation concentrate made from the raw ore, …
Enhanced methods for nickel recovery from low-grade ores …
From here, there is further leaching to remove iron and copper, and finally precipitation of nickel by the addition of ammonia, ammonium sulfate, and hydrogen. ... The second stage of froth flotation produces a nickel concentrate of 10-20% Ni, along with other by-products and gangue. Smelting is the next stage, designed to recover as much …
Influence of dextrin on beneficiation of components …
the concentrate and recovery of remaining components in tailing for all performed flotation experiments. a b Figure 2. Upgrading curves as a relationship between recovery of …
A novel hydrometallurgical treatment for the recovery of copper…
There are two flotation ways, differential and bulk flotation. On the one hand, differential flotation obtains concentrates of a single metal that later are usually processed by pyrometallurgical techniques (traditional route). ... Iron, copper, zinc, lead and silver in liquors and solids were determined by atomic absorption spectrophotometry ...
Classification of the Major Copper Sulphides into semiconductor …
The compositions of the various minerals abovementioned are summarised in Table 1.These are listed in descending order of iron enrichment. It will later be shown that the progressive replacement of iron in pyrite by copper and arsenic in the mineral structure to form the range of known copper iron sulphide minerals alters the semiconductor and …
Copper Concentrate
When enough collectors remain in CTs, the flotation of copper-lead is better, and the process of copper-lead flotation and zinc depression will be performed well. ... Using A. ferrooxidans grown on a nickel–copper–iron sulfide concentrate, nickel recoveries at 30°C and pH 2 were higher for increased periods of adaptation. For example, ...
Recovery of copper, nickel and cobalt from acidic pressure …
Recovery of copper, nickel and cobalt from the acidic pressure leaching solutions of Jinbaoshan (YN Province, PRC) low-grade sulfide flotation concentrates was investigated. The proposed technique includes four major steps: (1) the acidity adjustment of the acidic pressure leaching solutions; (2) solvent extraction (SX) …
Bio-processing of copper from combined smelter dust and flotation …
It is worth noting that the main phase of the flotation concentrate was chalcopyrite (as a primary sulphide), but the smelter dust mainly contained secondary copper sulphides such as Cu 2 S, CuS, and Cu 5 FeS 4.Under optimum conditions, copper dissolution from the combined flotation concentrate and smelter dust (as an …
Simultaneous extraction of copper and iron from chalcopyrite concentrate
The recovery of copper and iron was obtained 56.51% and 59.31%, respectively, at a 5% solid-to-liquid ratio. Similarly, copper and iron were recovered 65.8% and 70%, respectively, for a 10% solid-to-liquid ratio (10 gm of copper concentrate in 100 ml water(w/v)) on aforesaid parameters.
Flotation Reagents
This data on chemicals, and mixtures of chemicals, commonly known as reagents, is presented for the purpose of acquainting those interested in froth flotation with some of the more common reagents and their various uses.. Flotation as a concentration process has been extensively used for a number of years. However, little is known of it …
Copper recovery from copper slags through flotation …
The ores are concentrated through froth flotation in the form of copper-sulfide or copper-iron-sulfide minerals (e.g. chalcopyrite, chalcocite and etc.), which are then …
Integration of fine grinding and H2SO4 leach for the …
The copper flotation concentrate used in this study is from South Australia, in which chalcopyrite and bornite are dominant copper minerals and haematite is the main gangue mineral. ... After that, these primary copper-iron sulphide minerals (both chalcopyrite and bornite) participated in the wet oxidation reactions listed in (4), (5 ...
Copper recovery from copper slags through flotation …
The ores are concentrated through froth flotation in the form of copper-sulfide or copper-iron-sulfide minerals (e.g. chalcopyrite, chalcocite and etc.), which are then melted in a high-temperature reheating furnace (± 1250 ℃). ... the copper grade of flotation concentrates will be slightly lower if adding Na 2 CO 3 before grinding, ...
Investigating the impact of inoculation on bioleaching of copper
The liberation rates of the Tizert ore and flotation concentrate samples were presented in Fig. 6. For the Tizert ore, more than 40 % of copper deportment particles were middling, and an average of 40 % of particles were locked. For the flotation concentrate, 47 % of chalcocite grains were liberated, 37 % were middling, and 16 % were locked.
Estimated Water Requirements for the Conventional …
single copper concentrate has been modeled for this study. In 2011, approximately 13 million metric tons (Mt), or about 80 percent of the world's primary copper supply, originated from concentrate produced by flotation (International Copper Study Group, 2012). In 2011, about 60 percent of primary
Critical importance of pH and collector type on the flotation …
In both lead and zinc circuits, pyrite is the main sulphide gangue mineral. It is critical to decrease the presence of iron (Fe) and Zn in the lead concentrate during the flotation of galena.
Flotation of Gold and Gold-Bearing Ores
Differential flotation of the iron sulfides (Poling and Beattie, 1984) pyrite, pyrrhotite, and arsenopyrite is a unique process in the gold industry. ... Regrinding of a copper–gold rougher flotation concentrate that had a high pyrite content resulted in low Eh and dissolved oxygen concentration. The large amount of fresh pyrite surfaces ...
The Direct Leaching of Nickel Sulfide Flotation Concentrates …
The primary advantages of pyrometallurgical processing of nickel sulfide flotation concentrates are that iron and sulfur are removed from the concentrate during smelting and ... Vezina (Citation 1973) studied the pressure oxidation of a Canadian copper–nickel flotation concentrate grading 6.85% Ni, 8.83% Cu and 0.55% Co under …
Alkaline sulphide leaching of tennantite in copper flotation
High-arsenic copper flotation concentrates, in which the major arsenic-bearing mineral was tennantite, were leached with an alkaline sulphide system.
Advancements in Removing Fluorine from Copper Concentrate
The copper concentrate contains copper, iron, sulfur, and also some other harmful elements such as fluorine ions . The smelting process involves the removal of unwanted impurities such as iron, sulfur, and gangue materials before or during the process to the greatest extent possible. ... Copper flotation plants that process fluorine …
Copper Flotation
Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been improved to increase production while reducing operating and maintenance costs. Also, considerable attention is paid to automatic sensing devices …
Mixed Copper and Gold Ore Concentrates Processing
Hence, concentrating both gold and copper from a mixed ore type in the same facility requires a combination of techniques, including flotation, gravity separation, and cyanide leaching.
A Review of the Flotation of Copper Minerals
Copper is most commonly present in the earth's crust as copper-iron-sulphide and copper sulphide minerals, for example, chalcopyrite (CuFeS2), bornite (Cu5FeS4) and chalcocite (Cu2S).
Reagents types in flotation of iron oxide minerals: A review
ABSTRACT. Recently, beneficiation of iron from low-grade ores with high impurities has been a matter of discussion. Flotation is one of the most effective technologies for the upgrading of low-grade, finely grained iron ores.