The composition comprises a collector, a solvent such as water andor another solvent and one or more surfactants optionally with one or more cosurfactants and is in the form of a microemulsion. The copper ore is crushed into 250mm pieces, and carried through a tunnel on a 5 mile conveyor belt. And cu grade was improved by 3%, the recovery of cu, au and ag were. Recognition of the operational statuses of reagent. In copper processing, is typically used with copper sulfide ores, and involves froth flotation, thickening, smelting, and electrolysis. Mullen, idaho used the process on leadzinc ores in its mill. Froth flotation is defined as a physicochemical process which exploits the differences in the electrochemical. If you continue browsing the site, you agree to the use of cookies on this website. Estimation of platinum flotation grades from froth image data. The froth is poured into large tanks called thickeners. This technology has acclaimed importance as a versatile process for. Estimated water requirements for the conventional flotation of.
After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. The concentrate ash content analysis of coal flotation. Outotec to deliver process equipment to a gold project in cambodia. 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 coppergold ores using salt or brackish water. Outotec expands flotation offering with new flotation cell and levelcontrol solutions for superior metallurgical performance. Froth flotation froth flotation is one of the most versatile and flexible of all mineral separation processes. The terms and definitions are listed in eight sections which are arranged in a logical order of the manufacturing process. Froth flotation is a process that selectively separates materials based upon whether. Recognition of the operational statuses of reagent addition using dynamic bubble size distribution in copper flotation process article in minerals engineering 45.
Here is a list of rexnord products at work pumping slurry to process tomorrows copper ore today. The copper minerals and waste rock are separated at the mill using froth flotation. Minerals free fulltext froth image acquisition and. The next steps of copper ore concentrate process depends on off in the floatation.
Synonyms are listed in an arbitrary order and do not necessarily reflect the order of preference. Froth flotation is part of a copper beneficiation process in which finely ground ore is. Historically this was first used in the mining industry. Flotation of a copper sulphide ore from okiep using thiol. In the case of copper minerals, the particles adhere to this froth, which is separated, whereas the great bulk of the useless material sinks to the bottom of the tanks. Froth floatation process this method is used for concentration of sulphide ores of copper, lead and zinc. You have clicked a page that seems to be very popular. Following is how we calculated the amount of copper sulphate equivalent to 0. Jun 23, 20 effective costs of copper processing example of porphyry copper mine processing costs a typical smelter contract for copper concentrates issummarized in table 2.
Feb 23, 2016 in at least one embodiment a froth flotation separation process is enhanced by the addition to the slurry of an inventive composition. This confirmed the importance of froth stability on flotation performance and established the need for the direct measurement and monitoring of froth stability. A report by the us department of energy 2010 shows that the flotation and centrifugal separation only total percentage for both was presented subprocess only accounts for 4% of the total energy consumption in. In this method, powdered ore is put in a tank full of water.
In at least one embodiment a froth flotation separation process is enhanced by the addition to the slurry of an inventive composition. In addition, the technological process was further optimized. Broken hill, australia, the first attempt to apply a froth flotation apparatus was recorded. Why is pine oil used as collector in metal extraction from. The new process, an airmetabisulfite treatment, does not require lime or cyanide.
Froth flotation is a selective separation process that is widely used in mineral processing to extract valuable minerals. Application of flotation column on flotation of copper ore. Consider a porphyry copper minetreating an ore containing 0. The improvement allows for low dosages of frother to work as well as much greater amounts of nonmicroemulsified frother. Pine oil is an essential oil obtained by the steam distillation of needles, twigs and cones from a variety of species of pine, particularly pinus sylvestris. The flotation chemicals are mainly isooctyl acid phosphate, sodium isopropyl xanthate and potassium amyl xanthate as conditioner and collector, mibc as frothers, and sodium cyanide and copper sulfate as depressors.
Copper sulfide flotation circuit beneficiation of copper sulfide by flotation copper, due to the present world demand and price, is of foremost interest to the mining industry. Froth flotation so many variables influence flotation that it will be long before every one of them can be investigated and its influence on the process determined. The froth phase is one of the main components of froth flotation as it defines both the quality of the end product and overall efficiency. A typical froth flotation process can treat a rom ore that assays 0. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century. This is done so that the segments will be smaller, and therefore more able to float in the next process.
Aug 27, 2015 pine oil is an essential oil obtained by the steam distillation of needles, twigs and cones from a variety of species of pine, particularly pinus sylvestris. Evaluation of reagents to be the potential frothers for coppermolybdenite sulfide mineral flotation is systematically studied. Why is pine oil used as collector in metal extraction from ores. Its main process is that the bubble with selective slurry with incom. The copper ore slurry from the grinding mills is mixed with milk of lime simply water and groundup limestone to give a basic ph, pine oil yes, it comes from trees a byproduct of paper mills to make bubbles, an alcohol to strengthen the bubbles, and a. The optimal frother for high recovery with good selectivity will often be a blend of.
Some of the variables that affect the operation and. Copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99. Froth flotation circuit design and basic testwork requirements skimmed off as a mineralladen froth. Most flotation circuits include an initial stage of rougher flotation, followed by a scavenger stage of flotation. Concentrate slurry consisting of finely ground ore and water mixed with reagents is introduced into a series of mixing tanks called flotation cells, where air is pumped into the slurry. Soldering, welding, joining, and detergency qv, are but a few examples of. A study of bubble coalescence in flotation froths request pdf. The performance of froth flotation cells is affected by changes in unit load, feed quality, flotation reagent dosages, and the cell operating parameters of pulp level and aeration rates.
Optimization of reagent dosages for copper flotation using. Pickard, and john ballot in 1906, 19 years after the first cyanide process patents of macarthur and the forests. Beneficiation of these base metal sulphide minerals is predominating through froth flotation technique. Froth flotation sulphides experiment 2 metallurguy. The present invention relates to for improving the new method of froth flotation ore dressing process effect, compositions and device. The froth of copper rich bubbles at the top of the tank is then skimmed off for further processing. The remaining unfloated mineral slurry will be discharged as tailings.
So, we had to calculate the amounts of reagents we use for this experiment as we were going to use one sample 0. The performance of the froth depends on a number of subprocesses that interact in very complex ways, and it is a great research challenge to explicitly name the role of each of these subprocesses. At this point the ore is made up of approximately 0. Minerals free fulltext flotation bubble delineation. Alibaba manufacturer directory suppliers, manufacturers. Sulphide ores are major sources of base metals like copper, lead, zinc, nickel, cobalt etc. Reagent schemes used for the treatment of porphyry copper and copper molybdenum ores are relatively. Two flotation columns replacing traditional flotation machine and vertical agitate mill were successfully used on copper production in yangla mine.
Carrying capacity in flotation columns pdf free download. Selection of frothers from residual organic reagents for. In mining, the process of restoring land that has been mined to a more natural or economically usable state. This is used in mineral processing, paper recycling and wastewater treatment industries. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Sustainable use of earths natural resources outotec. Reagent consumption, according to conventional wisdom, accounts for 5060% of flotation operating costs. The method uses a microemulsion to improve the effectiveness of a frother. In such a system, the first important step is to acquire the froth surface images in high quality. The types and quantity of the reagents are the most important part of the flotation process. Until quite recently copper ore had to be handpicked if the extraction of the metal was to be economical. Froth flotation is defined as a physicochemical process which exploits the differences in the electrochemical prope rties of mineral surfaces, that is, between hydrophobic and hydrophilic. Us7007805b2 hydroxamate composition and method for froth.
Froth imaging quality is hard to control, and the industrial field noise, froth 3d properties, complex textures, and mixed colors can also cause the flotation image to be difficult to segment and process. The gangue sinks to the bottom of the tank to be removed or disposed of as mine tailings. New technology uses salt or brackish water to process copper. History of sulphide ore flotation dates back to beginning of 20th century. Froth flotation 2 presentation includes collection in the froth layer and reagents. By using techniques based on image colour analysis and fast fourier transforms to process videographic data of the froth phase in a copper flotation plant, it is shown that an image processing. Beneficiation by froth flotation of ore to give copper concentrate. Chemically, pine oil consists mainly of cyclic terpene alcohols. Precipitate flotation of copper ions was compared with ion flotation 36. Because the process was extremely fragile, its use was shortlived. Sep, 2016 the invention provides methods and compositions for improving a froth flotation type separation. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, froth floatation process in concentration of.
The modeling and the control of flotation processes are challenging because of the inherently chaotic nature of the underlying microscopic phenomena. Froth flotation of copper ore from jambi deposit, indonesia. Many new properties are either in the process of being brought into production or are. Pdf copper is most commonly present in the earths crust as. The invention relates to a hydroxamate composition for collection of minerals by froth flotation, the composition including an aqueous mixture of hydroxamate wherein the ph of the composition is at least 11 and a method of collecting mineral values from an aqueous ore slurry by froth flotation. By varying the chemical conditions within the cells different results can be obtained, thereby making flotation highly selective in skilled hands. A report by the us department of energy 2010 shows that the flotation and centrifugal separation only total percentage for both was presented sub process only accounts for 4% of the total energy consumption in mining and mineral processing. Flotation is a separation process to produce coppergold concentrate.
The high efficiency of a froth flotation process is. Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. Evaluation of reagents to be the potential frothers for copper molybdenite sulfide mineral flotation is systematically studied. 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. In ore dressing process, chemistry andor mechanical process is used to make two or more materials coexisted in mixture fines separated from one another. Jul 30, 2017 flotation process, named as froth flotation process, is based on difference of surface of various minerals, by means of buoyancy of the bubbles from the slurry, to sort minerals.
Request pdf froth flotation of copper ore from jambi deposit, indonesia froth flotation of complex copper ore from indonesia jambi mine has been carried. Read the concentrate ash content analysis of coal flotation based on froth images, minerals engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Graderecovery performance of a hypothetical copper ore flotation process. About 80 % of primary copper production comes from lowgrade or poor sulfide ores. Reagent schemes used for the treatment of porphyry copper and coppermolybdenum ores are relatively. The capacity of a flotation column is limited by the amount of bubble surface available to carry the particles into the froth launder, since the specific surface area, defined as the ratio of froth surface to the volume of pulp held is about one order of magnitude less in flotation columns compared with conventional cells. Froth is a threephase structure comprising air bubbles, solids and water. A concentration of 2530% is suitable for economical smelting of copper. The concentrate ash content analysis of coal flotation based. Pumping new and recycled water, operating the flotation equip. With introducing of these advanced machines, chalcopyrite with fine dissemination size could be absolutely liberated. Effective costs of copper processing example of porphyry copper mine processing costs a typical smelter contract for copper concentrates issummarized in table 2.
Generally, copper extraction follows the sequence see figure below. New technology uses salt or brackish water to process. In commercial plants, the control of reagent additions is the most important aspect of the flotation strategy6. One of the most significant aspects of microbubble flotation is the capacity of the process to vary product ash within a much wider range and with greater accuracy than was ever possible with mechanically agitated cells. The invention provides methods and compositions for improving a froth flotation type separation. About 80 % of primary copper production comes from lowgrade or poor sulfide. Effective use of energy in the flotation process d lelinski. Reasonable results are fairly easy to obtain but outstanding performance from a circuit requires constant attention and good understanding of the process and ore. Batch flotation tests were used to assess the performance in terms of masswater recovery, sulphur graderecovery and copper graderecovery relationships and the klimpel rate constant for copper recovery. Notice to the annual general meeting of outotec oyj.
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