fonction of the tailings thickeners

Thickeners versus centrifuges a coal tailings technical

Thickeners versus centrifuges a coal tailings technical comparison S Meiring 58 Paste 2015, Cairns, Australia 6 Sedimentation In its simplified form, there is a direct relationship between the size of a spherical particle and its rate of fall

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Tailings info Tailings Handling

Handling Methodology Tailings are transported to their final storage place in a number of different ways The most common is slurry transportation in a pipeline from the thickeners normally located at the processing plant to deposition points located within or around a surface tailings storage facility

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Thickening Resource Book

Continuous thickeners have undergone several modifications that have resulted from the development of a wide variety of organic polymeric flocculants As a result, there are now two basic types of continuous thickeners: Conventional and High rate Conventional Thickeners These thickeners differ in

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De Watering Information and Equipment

Types of dewatering equipment covered are Thickeners Gravity A thickener is a machine that de waters slurry, separating the liquid from the solids The solids' particle size range in thickeners is generally from 0 5 mm to a few microns The finer the particle size, the

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Thickening and disposal of oil sand tailings Request PDF

existing MFT inventory, the use of flocculants to thicken fine tailings is becoming a trend in the industry Much research is carried out by industry and academia to find new

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Pulp, paste and putty: thickeners and flocculants for high

Tailings thickeners can control the density of the solids to be sent to a tailings storage facility TSF During beach deposition the density difference between the discharge slurry and initial settlement, at which water decant or leakage finishes, will largely determine the rate or proportion of water that may be available for decant after

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Dewatering Screen for Coal, Slurry, Mine Plant JXSC

The tailings dewatering screen is also called the tailings dry sieving screen In addition to the various excellent properties and functions of the ordinary dewatering screen, the tailings dry sifting screen is combined with the thickening machine for the tailings dry platoon It is the best dewatering screen and tail at the moment

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Coal preparation plant

Thickeners are used for dewatering slurries of either tailings or product A thickener is a large circular tank that is used to settle out the solid material from the water in the feed slurry The separated water is clarified and reused as process water in the CPP Thickeners are sized according to the volume of feed slurry to be processed

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what is the purpose of thickener in gold mining Shanghai

what is the purpose of thickener in gold mining what is the purpose of thickener in gold mining tailings thickeners used for sale Gold Ore Crusher Mining Industry Tailings Thickeners: An important function of this tailings thickener is

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Improving the efficiency of the tailings thickener in a

A customer had multiple coal types, that were processed through the preparation plant Some of the coal types had different settling characteristics, which affected tailings thickener efficiency and the clarometer instrument that tested settling rates in the incoming feed well failed from time to time, which meant that the floccing rate changed and the suspended solids increased

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Tailings info Thickened Tailings Storage A discussion

Beginners Guide to Thickeners Beginners Guide to Thickeners Thickening is a process where a slurry or solid liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water or liquor in leaching processes

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Dynamic modeling and simulation of tailing thickener units

Additionally, thickeners are equipped with a rake mechanism that helps move the sediment to the underflow outlet The processed tailings are later transported through pipes, with the help of centrifugal or positive displacement pumps, to the designated storage facility, which can be either a surface or underground disposal site Concha, 2014

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How a Thickener Works Mineral Processing Metallurgy

Thickening or dewatering may be defined as the removal of a portion of the liquid from a pulp or slime made up of a mixture of finely divided solids and liquids The early methods of thickening employed plain, flat bottomed tanks into which the pulp was fed until the tank was full The solids were then allowed to settle as long as required, the top liquid was decanted, the settled solids were

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Tailings Central Thickened Discharge challenges faced and

fines fine waste and tailings coarse waste The tailings and slime fractions are composed of calcitic to dolomitic crystalline minerals with minor quartz, gypsum and traces of yellow secondary uranium salts also found The fines would be thickened in deep cone thickeners and flotation tailings would be thickened in a high rate thickener

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Dynamic modeling and simulation of tailing thickener units

Additionally, thickeners are equipped with a rake mechanism that helps move the sediment to the underflow outlet The processed tailings are later transported through pipes, with the help of centrifugal or positive displacement pumps, to the designated storage facility, which can be either a surface or underground disposal site Concha, 2014

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4 x Flowrate 4 x 200 π Riserate MIP Process Technologies

The following is a short cut to designing your own thickener: a Size of Thickener As a first stab we can either use the thickener flux m 2 /tpd or the rise rate, depending if solids loading is the dominant eg Platinum Tailings or feed flow rate e g Clarification or low feed solids

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Paste Thickening Optimizes Tailings Disposal and Water

Aug 03, 2016 Mine tailings disposal, and its impact on water usage, is an important concern for any mining company The challenge today, whether extracting aluminum, zinc, gold or iron ore, is how to dispose of tailings material such that it is contained and stable, while maximizing water reuse and minimizing surface footprint

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Continuous Thickening of Homogeneous Flocculated Slurries

Thickening areas required from both the standpoints are proved to coincide with each other, provided that the settling curve and R C relation of that slurry could be expressed by eq 1 and 3 respectively 5 Figure 7 shows the mass settling velocity G at certain Qu/A as a function of slurry concentration

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Tailings co disposal case study art or science?

thickener feed bin and the tailings bin at the PCP and controlling the lime additions based on pH Polymer addition to the slimes thickener centre well and tailings end of line were augmented with significant quantities of recycled dilution water to minimise polymer dose 2 2 Results and discussion

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Working of Thickener,Thickener

Mar 27, 2015 Thickener is also named Sluge Thickener Shan,It is mainly used to dehydrate concentrate and tailings of the ore beneficiation plant Please contact us for mo

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Numerical simulation of flocculation and settling behavior

Mar 30, 2016 Rapid dewatering and thickening of whole tailings with ultrafine particles is one of the most important processes for the whole tailings paste preparation Deep cone thickener, a kind of such process for the flocculation and settling of whole tailings, is particularly necessary to study

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Tailings info Deposition Methods of Tailings

Robinsky 2000 reported that as the degree of thickening of tailings increases there is less slurry to carry the coarse fraction and the tailings begin to stack closer to the discharge point increasing the tailings beach slope Further thickening eventually results in a non segregated slurry due to the high pulp density of the depositing tailings

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Thickeners McLanahan

Popular Applications for Thickeners While the most common application of Thickeners are in mining and aggregate tailings, they are also found in mineral concentrate dewatering, hydrometallurgical intermediate dewatering, and counter current decantation washing processes Clarifiers find use largely in water treatment applications

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Feedwell is the heart of a thickener

Feedwell is the heart of a thickener Jerold Johnson WesTech Engineering, Inc, USA Antonio Accioly WesTech Engineering, Inc, USA Abstract Thickeners that produce non Newtonian underflow suspensions use the same feedwells as with other thickener types

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Thickeners Mining Tailings Dewatering JXSC Machine

Thickener Capacity: 5 400 t/24h Application: Thickener is suitable for the dewatering process of concentrates and tailings in the mineral processing plant, and is widely used in the metallurgy, chemical, coal, non metal ore dressing, environmental protection and other industries

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Design and Functions of High efficiency Thickener Xinhai

Thickener tank is widely used for the dewatering of concentrates and concentration of tailings in dressing plants They are mainly composed of thickening tank, rake, gearing device, rake lifting device, feeding device, unloading device and signal safety device

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Raking Effects on Aggregate Densification and Channelling

As the aggregate structure broke and densified, the void ratio and pore size of the mud bed were decreased Thickening performance enhancement was predicted based on solid flux and permeability of mud bed, and the result indicated raking on aggregate densification and channelling apparently improves the unclassified tailings dewatering extent

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THE ROLE OF ORE PROPERTIES IN THICKENING PROCESS

Abstract: The role of ore properties density, particle size, and mineralogy in thickening process was studied in this research The shaking table was used to prepare the sample for the tests The tailings were continuously fed on the table by gravity to separate the tailings in three products as slime, middling and coarse particles

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Pulp, paste and putty: thickeners and flocculants for high

Tailings thickeners can control the density of the solids to be sent to a tailings storage facility TSF During beach deposition the density difference between the discharge slurry and initial settlement, at which water decant or leakage finishes, will largely determine the rate or proportion of water that may be available for decant after

Get Price

6m Small Thickener Processing Tailings And Concentrate For

Mining Thickener Machine for Gold Copper Flotation Tailing Processing Machine The high efficiency concentrator produced by our company is suitable for removing the water in the ore concentrate and the tailings in the ore beneficiation plant and it can concentrate the ore pulp from 20 30 to about 40 70

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Tailings info Deposition Methods of Tailings

Robinsky 2000 reported that as the degree of thickening of tailings increases there is less slurry to carry the coarse fraction and the tailings begin to stack closer to the discharge point increasing the tailings beach slope Further thickening eventually results in a non segregated slurry due to the high pulp density of the depositing tailings

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Tailings

Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed

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Improving flocculation and dewatering performance of iron

The zeta potential of the tailings thickeners feed as a function of pH is shown in Fig 1 The results reveal that the sample exhibits positive charge at pH < 2 7 and negative charge at pH 2 7 Thus, the point of zero charge of the sample is at pH zpc = 2 7 The surface charge of the particles is negative over a broad range of pH and its

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Thickening and disposal of oil sand tailings Request PDF

existing MFT inventory, the use of flocculants to thicken fine tailings is becoming a trend in the industry Much research is carried out by industry and academia to find new

Get Price

Continuous Thickening of Homogeneous Flocculated Slurries

Thickening areas required from both the standpoints are proved to coincide with each other, provided that the settling curve and R C relation of that slurry could be expressed by eq 1 and 3 respectively 5 Figure 7 shows the mass settling velocity G at certain Qu/A as a function of slurry concentration

Get Price

Improving flocculation and dewatering performance of iron

The zeta potential of the tailings thickeners feed as a function of pH is shown in Fig 1 The results reveal that the sample exhibits positive charge at pH < 2 7 and negative charge at pH 2 7 Thus, the point of zero charge of the sample is at pH zpc = 2 7 The surface charge of the particles is negative over a broad range of pH and its

Get Price

Numerical simulation of flocculation and settling behavior

Mar 30, 2016 Rapid dewatering and thickening of whole tailings with ultrafine particles is one of the most important processes for the whole tailings paste preparation Deep cone thickener, a kind of such process for the flocculation and settling of whole tailings, is particularly necessary to study

Get Price

Paste Thickening: Considerations for Backfill vs Tailings

Depending on the type of tailings storage facility TSF, the particle size distribution PSD can greatly influence the cost of dams and need for borrow materials, as well as the geotechnical properties and geochemical behavior of the system For mines requiring backfill, rheology and strength are also a function of PSD

Get Price

Tailings info Tailings Handling

Handling Methodology Tailings are transported to their final storage place in a number of different ways The most common is slurry transportation in a pipeline from the thickeners normally located at the processing plant to deposition points located within or around a surface tailings storage facility

Get Price

Thickeners or thickener plants Outotec

Jan 12, 2012 Thickeners are inevitably part of the initial process of treating process water in sand washing Secondary treatment may be required in certain applications However, paste thickened tailings may offer an alternative that cuts one process out and potentially lowers initial capital, ongoing wear of filters and operating costs {{image3 a:c w:600}}

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Feedwell is the heart of a thickener

Feedwell is the heart of a thickener Jerold Johnson WesTech Engineering, Inc, USA Antonio Accioly WesTech Engineering, Inc, USA Abstract Thickeners that produce non Newtonian underflow suspensions use the same feedwells as with other thickener types

Get Price

Design Considerations for a Tailings Disposal System E MJ

Prior to the advent of paste thickeners, a mine would specify and buy a high rate thickener The vendor would design and install it Because the underflow from a conventional thickener, a tailings slurry, flowed according to Newtonian principles, each of the other aspects of the system could all be designed independently and they would work well

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Design and Functions of High efficiency Thickener Xinhai

Thickener tank is widely used for the dewatering of concentrates and concentration of tailings in dressing plants They are mainly composed of thickening tank, rake, gearing device, rake lifting device, feeding device, unloading device and signal safety device

Get Price

Coal preparation plant

Thickeners are used for dewatering slurries of either tailings or product A thickener is a large circular tank that is used to settle out the solid material from the water in the feed slurry The separated water is clarified and reused as process water in the CPP Thickeners are sized according to the volume of feed slurry to be processed

Get Price

Conventional Thickeners solidliquid separation com

Historically thickeners were introduced to the mining industry in 1905 when the beneficiation of ores by froth flotation was invented in Australia In 1964 there was a project to reprocess the huge piles of tailings that accumulated over the years and recover the remaining copper

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Tailings Thickeners Coal Hawk Measurement

control loop to automate this function if the clarometer failed Hawk manufacturers the largest range of sonar transducers to provide optimized performance, for all bed level thickener applications e g concentrate thickeners etc Ordering information: Tailings thickeners part no: OSIRDYX + OSIRT302S4XC6 + OSIRME L3 + OSIRSC A

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Paste Thickener Design to Achieve Downstream Requirements

Jul 11, 2016 Paste Thickener Design to Achieve Downstream Requirements Posted by Jerold Johnson on July 11, The angle of repose is a function of the end of the pipe rheology of the material Determining the optimum location of a high rate thickener for a thickener tailings system International Seminar on Paste and Thickened Tailings, Santiago

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Concentrate Thickener Operation

In mining, when flotation is finished with the ore, and a final concentrate has been produced, often, both products will go to a concentrate thickener before it is dried for shipping This is a very important step so here we discuss Basic Concentrate Thickener Operation For the mine to get its concentrate to the smelter it will have to be transported, by truck, train or ship

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Paste Thickening: Considerations for Backfill vs Tailings

Depending on the type of tailings storage facility TSF, the particle size distribution PSD can greatly influence the cost of dams and need for borrow materials, as well as the geotechnical properties and geochemical behavior of the system For mines requiring backfill, rheology and strength are also a function of PSD

Get Price

A description of the sedimentation process during dynamic

determining the diameter of a thickener for a given tonnage duty Talmage and Fitch, 1955 This method which determines the thickener area required to produce a sediment of a given solids concentration at a given solids throughput i e a unit area function in m2/t/d is still widely used to size thickeners

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