Click, drag, and drop to reorder files or press delete to remove any. Copper is floated in the first differential flotation stage at. Until quite recently copper ore had to be handpicked if the extraction of the metal was to be economical. I declare that no portion of the work referred to in this thesis has been sub. You can merge pdfs or a mix of pdf documents and other files. The choice between flotation, leaching or bioteaching from low grade copper bearing domestic ores. Chilean copper commission cochilco, 2008, best practices and efficient use of water in the mining industry. Theoretical curves can be generated based on particle mineralogy and texture to indicate the maximum graderecovery possible for a given feed ore. Review of implementation of newer technologies into flotation process control including machine vision and froth stability. Demand for metals such as copper has increased significantly in recent years. As with xanthates, the reactions involved are dependant on the ore type and the characteristics of the multiphase flotation system. The study aims to recover copper minerals from a high content of slime and refractory copper oxide ore by flotation process.
Improved cleaner circuit performance at the degrussa copper mine with an in situ column sparging system j. 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. Research highlights literature of instrumentation used in flotation control. Hydrophobicity differences between valuable minerals and waste gangue are increased through the use of surfactants and wetting agents. Investigation of flotation parameters for copper recovery from. Therefore, a higher overall efficiency of the copper removal, from such minerals blend, was obtained. In a flotation process, many flotation cells are used in serial. Differential flotation reagent for molybdenum separation. Open access challenges in sulphide mineral processing k.
China iron, copper ore flotation machine, gold flotation. The timerecovery plots are shown in figure 3 to figure 4, and were fit for the modified rate equation eq. Up to now, sulfide flotation is still one of the most widely used processes in copper oxide ore dressing, but it is unable to solve the problem of low. Wasmund3 global managing director more information is available at. Method the method consists of three major operations. Flotation 80% copper, 70% gold recovery clean 27% copper goldsilver concentrate life of mine tailings facility. According to the impacts from weak to strong, the inhibition effects of these. The average grade from flotation process as a copper metal concentrate was cca 2022% cu, and.
A comparison was made between the leaching efficiencies of copper and nickel from flotation concentrates and mine tailing. Merger rationale for personal use only creating a new copper play of scale. Copper flotation profit can be estimated online utilising the assay of the onstream analysers. Optimization of reagent dosages for copper flotation using. A selective or sequential flotation flowsheet of two or more products.
For many sulfide copper minerals, the removal of copper is ultimately accomplished with fire, so it is known as a pyrometallurgical process. How to merge pdfs and combine pdf files adobe acrobat dc. It is shown that these five flotation reagents can all depress the copper extraction of at. Our engineered products are designed for the rigorous demands of continuous operation, minimizing wear and maximizing efficiency throughout the process. 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.
Based on the research on the properties of the material, the grinding fineness and reagent system are investigated and a technological flow sheet consisting of one roughing flotation, two concentrate flotation, three scavenging flotation and one concentrate. Materials the nickel copper sulphide ore used in this study was supplied by trojan nickel mine located in bindura, zimbabwe. The utilization of copper nickel tailing introduction though several methods exist for the possible recovery of the copper and nickel in a duluth gabbro ore, it appears that concentration of the sulfides by flotation followed by smelting offers the most realistic approach. Acid leaching of oxidesulfide copper ore prior the flotation. From crushing and grinding to flotation to dewatering, rexnord will help. During the extraction process, the copper is in either an aqueous, or.
There is thus a global market price for these metals that is determined mainly on the lme. Integrated estimation model of clean coal ash content for. The main process for copper ore is flotation, for refractory mixed copper ore and refractory oxide ore, normally use hydrometallurgy process. China iron, copper ore flotation machine, gold flotation separator, flotation process, find details about china copper ore flotatioin machine process, flotation process from iron, copper ore flotation machine, gold flotation separator, flotation process zhengzhou hengxing heavy equipment co. The new process, an airmetabisulfite treatment, does not require lime or cyanide. Smelting and refining of massive sulphides begins with the flotation of ore, typically in the range of 0. Copper is floated in the first differential flotation stage at a 1011 ph with lime. Contact us to know more info about industrial gold mining equipment, get free froth flotation pdf, flotation process flow chart, and related industry cases of gold froth flotation, zinc froth flotation, copper flotation, ore flotation.
The flowsheet in this study illustrates a typical 3,000 ton per day operation. Copper flotation profit and controlsystem accuracy. Advanced ph controllers were implemented to ensure a desired ph control that promotes selectivity of nickel and copper at bulk flotation and separation circuits respectively. Gold, silver, copper, lead, zinc, molybdenum, iron, potash, phosphate, and even sand for glass are often processed by froth flotation. A flotation pretreatment study for the separation of enargite cu3ass4 from chalcopyrite cufes2 ores of different origins was investigated in. Sphalerite is depressed with zinc sulphate addition to the grind with sodium sulphide as an option for enhancing pyrite depression. Floatation processing plantbeneficationplanthenan daiwo. The mineral processing flow sheet and reagent system of flotation copper minerals from alarge copper sulfide deposit in yunnan were fully investigated. Sf flotation machinemining processing machinehenan daiwo. Improved cleaner circuit performance at the degrussa copper.
An improvement in the froth flotation separation of metallic sulfide mineral ores, particularly those ores bearing copper and molybdenum, in which a mercaptan collector is used in an earlier primary flotation stage, the improvement comprising the addition of activated carbon to achieve deactivation of the mercaptan collector prior to the component mineral separation stage, thereby providing enhanced separation of the minerals. Acid leaching of oxidesulfide copper ore prior the. Only the flotation process mentioned above could make this practicable. These products are manufactured exclusively for senmin by cd the target firm, using senmins proprietary knowhow. By utilizing selective flotation, two or more minerals in an ore are separated into individual high grade products. It is a high technological enterprise that integrated research, manufacture, sales and service. Senmin, more specifically, markets three technical grade cmc products to the mining industry, namely sendep 30d, sendep 30e and sendep 30f. Today such ores which would be regarded as relatively rich in copper are scarce. Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. The flotation concentrates are then dewatered by clarification and filtration, resulting in 10 to 15 percent water, 25 percent sulfur, 25 percent iron, and varying quantities of arsenic, antimony, bismuth, cadmium. The mining rights it owned to land in greece, romania and turkey gave it access to over 10 million ounces of 2p gold reserves in addition to over 80 million ounces of silver. Pine oils, cresylic acid, and longchain alcohols are used for the flotation of copper ores.
The influence of surfactant chemistry on flotation deinking master of science thesis in the master degree programme, material and. Effect of slurry ph on the recovery of copper and nickel. Development of a combined flotation and high pressure. It produces copper concentrate containing gold and silver through a milling and flotation process and copper cathodes. Based on the research on the properties of the material, the grinding fineness and reagent system are investigated and a technological flow sheet consisting of one roughing flotation, two concentrate flotation, three scavenging flotation and one concentratescavenging. The combination of these processes will of necessity be a largescale. Keywords mine tailing, flotation, high pressure leaching, copper, nickel 1. The copper minerals and waste rock are separated at the mill using froth flotation. Copper and molybdenum production process the process of producing copper starts at the open pit mines of toquepala and cuajone. This could be recovered by gravity methods from a bleed stream of the cyclone underflow. An improvement in the froth flotation separation of metallic sulfide mineral ores, particularly those ores bearing copper and molybdenum, in which a mercaptan collector is used in an earlier primary flotation stage, the improvement comprising the addition of activated carbon to achieve deactivation of the mercaptan collector prior to the component mineral separation stage, thereby providing enhanced. Processing of copper ores copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99. More than 97 percent of annual ore tonnage processed is disposed of as.
Chernyshova2 1division of mineral processing and process metallurgy, department of chemical engineering and geosciences, lulea university of technology, se971 87 lulea, sweden. Pdf the choice between flotation, leaching or bioteaching. Copper beneficiation process yantai jinpeng mining. 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.
Advanced flotation process control system at a base metal. Copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99. Cesl hydrometallurgical technology can be applied to a wide variety of copper and nickel sulphide concentrates, and has the flexibility to treat bulk, lower grade, or impuritychallenged material. Us4022686a flotation process for copper ores and copper. As one of the largest commodity traders and mining companies in the world, swissbased glencore has maintained a rich lineage of innovative technology through its existence in the mining sector. Thats all 7 main variables affecting froth flotation. One mechanism described is the electrochemical reaction where the metal ion on the.
In fact, in the last century, ores of 4 percent grade were regarded as almost valueless. Merge pdf, split pdf, compress pdf, office to pdf, pdf to jpg and more. Flotation circuit optimisation and design imperial spiral. A remote sensing and gis method for detecting land surface areas covered by copper mill tailings russell schimmer. A comparative study of kinetics of flotation of a copper. Advanced flotation process control system at a base metal concentrator mvuyiso gqwaru1, sydney m mantsho1 and client2 1 measurement and control mintek, south africa 2 michigan, usa abstract in 2015, the commissioning of the floatstar stabilization and optimization control system was completed in michigan, usa. New technology uses salt or brackish water to process. Investigation on copper flotation from a complex copper. Open access challenges in sulphide mineral processing. Effective use of energy in the flotation process d lelinski. The flotation circuit was expected to achieve a copper recovery between 78% and 94% for given feed grades of between 0. This process is experimental and the keywords may be updated as the learning algorithm improves. Graderecovery performance of a hypothetical copper ore flotation process.
Combine multiple pdf files into one single pdf document. Copper sulphate is widely used in base metal sulphide flotation circuits to improve the process efficiency. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals from a nickel copper sulphide ore. High and low limits of the profit can be calculated, a. In commercial plants, the control of reagent additions is the most important aspect of the flotation strategy6. Sf flotation machine is the representative equipment in the flotation production, mainly used in the flotation of nonferrous metals and rare metals, such as copper, gold, silver, zinc, lead, nickel, etc.
The recovery of sericite in flotation concentrates. Reagent schemes used for the treatment of porphyry copper and copper molybdenum ores are relatively. The flotation separation and recovery approach is quite similar to the pbzn sulphide separation process. Flotation separation of coppermolybdenum sulfides using. Investigation on copper flotation from a complex copper ore. Recovery of copper from a high content of slime and. 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. This has been used to recover native gold in copper flotation operations. Regulation ec no 92004 merger procedure purchaser approval art. From crushing and grinding to flotation to dewatering, rexnord will help you determine the right power transmission products for your application. A flotation process in which copper ores or copper converter slags are ground and firstly have added thereto benzotriazole or alkyl benzotriazole as an activator and secondly one or more collectors selected from the group consisting of xanthates, dithiophosphates, thiocarbamate esters, dithiocarbamates, mercaptans and dixanthogens and further, if desired, a promoter such as kerosene, light oil.
Metallurgical contenta copper flotation flowsheetcopper miningcrushing copper orecopper ore storagegrinding copper orecopper flotation circuitcopper thickening and filteringprocess controlscopper flotation process summaryflotation of copper ores although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of. A pdf version of this article is available in the download section on the. The types and quantity of the reagents are the most important part of the flotation process. Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity. Another major merger has been the acquisition of alcan by rio. Here is a list of rexnord products at work pumping slurry to process tomorrows copper ore today. This explains why, in order to smelt 4 million tons of new copper in 1963, nearly 400 million tons of ore had to be handled and treated in various ways. Development of a lowerph copper flotation reagent system. Copper ores and copper mining process naipu mining. Flotation reagenttechnology, patents, process, product.
Our work showed that ha could be utilized as a promising depressant for molybdenite during the flotation separation of copper molybdenum sulfides over a wide range of ph. Without froth flotation, many of the metals and minerals used every day in our modern world would be much more expensive. Through this study, the influence of some parameters, affecting the leaching process, and the flotation pro. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century. A comparative study of kinetics of flotation of a copper nickel ore by. Floatation processing plant mainly used for the nonferrous metal mineral beneficiation, including copper beneficiation, zinc beneficiation, lead beneficiation, nickel beneficiation, gold beneficiation, silver beneficiation. The company just came in with their own plan and perceived that their plan was the right plan. To senior consultant from newest consultant subject bhp tintaya copper mine when bhp decided to buy tintaya copper mine, the company did not have a stakeholder strategy in place. Design of the integrated control systems for mineral. Bor river in which the flow of sewage from the tailings, flotation and other facilities for the. The analysis of the results indicates that the advanced process control apc system has improved the overall control of the plant.
It can be concluded that the combined process of flotation and high pressure oxidative leaching hpol is an efficient approach for recovery of copper and nickel from mine tailing. Furthermore, cyanides used worldwide as an effective. 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. Centinela is located 1,350 km north of santiago, in an important mining region with sulphide and oxide deposits. Dec 28, 2015 converter slag copper loss copper recovery magnetite content flotation concentrate these keywords were added by machine and not by the authors. After the flotation step, the paper is bleached to give a satisfactory level and sent to a storage tower.
The company has leveraged its experience and knowledge from its own operational sites to develop and market new solutions to meet the mining industrys evolving demands. Depending on the amount and size of this native copper it could be building a circulating load in the milling circuit. The results indicated that the optimum conditions for flotation of copper minerals from the material were identified as follows. The turnkey delivery included the improvement of the automation level of the plant by supplying a proscon 2100 process control system, a psi200 particle size indicator for grinding, three analysis lines from pyrite flotation and the upgrading of the existing courier 30 to a courier 30ap. Chalcopyrite was the only significant copper bearing mineral, and the feed contained 31. Concentrate smelting produces a high grade nickel matte which is then refined hydrometallurgically. Our copper operations involve mining, milling and flotation of copper ore to produce copper concentrates, the smelting of copper. Laboratory assistant, duties involving routine mill process control and development test work for potential copper production. Jun 19, 20 the texture of particles within a flotation cell play a pivotal role in both mineral recovery, and the grade, in the flotation concentrate. Various process chemicals are used in the froth flotation of metallic ore of uranium, copper, zinc, lead, and iron. Italmatch has also started exploring the possibilities of. This is used in mineral processing, paper recycling and wastewater treatment industries. 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. The use of such reagents, especially cyanides, has a negative effect on the recovery of precious metals as byproduct of flotation, and precious metals play a significant role in the economics of ore beneficiation processes.