Attrition scrubbing of the crushed ores was found to be an unconvention- ... Flotation, Depression, Attrition Scrubbing, Carbonate Separation 1. Introduction ... has a particular importance in flotation. The face/edge relationship, which depends on the particle size, deter-Inquiry Online
After treatment in the attrition machine, the slimes formed by scrubbing of surfaces or dispersion of soft particles are readily washed out by other types of treatment units downstream. In designing the machine, the object was to achieve the strongest possible attrition of …
Flotation technology of the recovery and utilization of ilmenite from tailings of iron beneficiated in Panzhihua was investigated based on mineralogical study. The results of mineralogical study show that the main occurrence of the valuable mineral are liberated grains of ilmenite. Experimental results of flotation conditions show that attrition-scrubbing raw ores exhibit good flotability with
Attrition scrubbing of the −11 mm crushed ores was carried out in the laboratory using the “Denver D12” flotation cell. In this process, the attritioned product was screened on a 74 μm screen and both oversize and undersize fractions were weighed and analyzed for loss on ignition, L.O.I
Flow sheet used in beneficiation of silica sand using attrition scrubbing flotation. The flotation is performed at acid pH 2.5–3.5 and controlled with either sulfuric or hydrochloric acid. The collectors usually used are sulfonate-based collectors from Cytec 800 Series (i.e., R801, R827)
WEMCO® Attrition Scrubber Designed to achieve the strongest possible scrubbing without reduction of particle size, the WEMCO Attrition Scrubber sets the stage for maximum product quality and recovery throughout your circuit. Optimal attrition happens when a balance occurs between power and control – …
Attrition Cells/Scrubbers are typically fed by Separators™, Hydrosizers™ or Dewatering Screens to present the material at a high density to achieve the best scrubbing action possible. Operating densities vary depending on the application but are typically in the range of 72-75% solids by weight
The v-belt drive system is designed to effectively transmit the power to spin the shaft and impellers. The most important function of the attrition machine is the scrubbing of particle scrubbing of particle surfaces to remove film or coating. Application. GTEK's versatile attrition scrubber is specially developed for a vast range of applications:
Used Denver Attrition Scrubber. Attrition grinding denver d 12 attrition grinding denver d 12 mobilecrusherchinaus scrubbing is scratching and rubbing of silica surface and removal of surface out by attrition scrubber of denver d12 flotation cell on product of triflow spiral know more,Used denver attrition scrubber
Attrition scrubber named as attrition cell is used to scrub the pulp with a concentration of 65-70% and to scrub the mud and fine sand on the ore. Dispersing the slime in ores to remove the impurities on the ore surface can create conditions for subsequent mineral processing and is an important part of mineral processing production line
Attrition Scrubbers. Westpro’s versatile attrition scrubbers provide efficient slurry scrubbing solutions for applications in a variety of industries including mining, frac sands, aggregates and soil remediation. The scrubber tanks and mechanisms are designed to produce intense agitation and deliver superior scrubbing performance
Jan 08, 2016 · Different processes like screening, scrubbing, heavy media separation, washing, roasting, calcinations, leaching and flotation may be used. For example, crushing and screening are used to remove coarse hard siliceous material, and attrition scrubbing …
Attrition scrubbers are used to scour particulate surfaces, removing undesired materials and breaking down clays – cleaning and desliming the particles prior to other treatment processes. It is the friction between the particles, created by turbulence and supplied by the machine’s impulsion, that provides the highly efficient cleaning action. The action does not reduce the sound particles in size, as there is no grinding of the material. The only degradation that takes place is that of soft particles, such as clays, or cemented materials
We offer a variety of attrition cell machine arrangements, based on your specific application. Prior to making a recommendation, we test your material in our laboratory to determine your optimal attrition scrubber configuration. This ensures you receive the appropriate machine, in the correct size and with the proper quantity of cells, for your operation
With more than 50 years of experience with attrition cells, we have units installed around the globe. Call on our experienced engineers and support staff to ensure your attrition stage delivers the most cost-efficient and effective particle scrubbing for your operation
Industrial sand – Scrubbing blasting sand and fracturing sand to disperse contaminating soft particles and other impurities, which are then removed by desliming. This process helps your sand product meet API standards by creating a high purity, more crush resistant silica sand that will meet your customers’ specifications
FLSmidth provides sustainable productivity to the global mining and cement industries. We deliver market-leading engineering, equipment and service solutions that enable our customers to improve performance, drive down costs and reduce environmental impact. Our operations span the globe and we are close to 10,700 employees, present in more than 60 countries. In 2020, FLSmidth generated revenue of DKK 16.4 billion. MissionZero is our sustainability ambition towards zero emissions in mining and cement by 2030
Scrubbing is a suitable method for cleaning fine slime on the surface of microcrystalline graphite, improving its flotation performance. However, little attention has been paid to the effect of the scrubbing medium’s particle size on enrichment efficiency of scrubbing flotation of microcrystalline graphite. In this work, scrubbing parameters (i.e., scrubbing medium’s particle size, stirring speed, and solid concentration) were optimized via response surface methodology using Box-Behnken design to yield the maximum enrichment efficiency of graphite ore. The scrubbing medium’s particle size was found to be the most important influencing factor. The optimal conditions for scrubbing process were obtained and tested to confirm the results predicted by the Design-Expert software. The enrichment efficiency of graphite treated with scrubbing media of different sizes was compared under optimal stirring speed and solid concentration conditions. The effect of the scrubbing medium’s particle size on the scrubbing flotation of graphite was investigated by a comparison of the graphite particle size distribution before and after scrubbing, and field emission scanning electron microscopic examination of raw ore and flotation concentrates
Attrition Cells/Scrubbers are designed to scrub the surfaces of particulates, liberate deleterious materials and break down pretend particulates associated with durability, such as hard-pan clays. The top size of the feed is typically of up to 1/2” (12 mm). Surface contaminants, such as clays, oxides and chemicals, are removed by particle-on-particle attrition generated by a series of rotating paddles inside the Attrition Cells that have been sized to suit the application.
This style of scrubber is ideal for industrial (frac, glass, sports) and mineral sands to meet turbidity and color test requirements. They also allow more efficient downstream separation, such as in flotation and electrostatic/electromagnetic separation. Attrition Cells/Scrubbers can handle high plasticity clays in high shear and aggressive scrubbing environments.
McLanahan Attrition Cells/Scrubbers are designed to be robust. They feature heavy-duty direct-drive gearboxes that eliminate the slip often associated with V-belt driven units. They also feature field-replaceable rubber liners, shaft protection and individually replaceable paddles for longer wear life and reduced maintenance downtime.
McLanahan's in-house Applications Research Laboratory performs lab-scale testing of sample material to evaluate the most appropriate process for an application, whether it's surface contamination or durability issues, as well as to determine the effectiveness of that process. This ensures the right size and quantity of Attrition Cells/Scrubbers are selected to achieve the most efficient operating configuration in the field. McLanahan offers multiple configurations of Attrition Cells, including a variety of sizes and shapes, as well as unique adjustable internal geometry to provide maximum scrubbing and increase the quality of the final product.
McLanahan has more than 30 years of experience with Attrition Cells/Scrubbers and many units installed in a variety of applications. Our experienced geological and process engineering staff can assist with your application needs to ensure efficiency and profitable production.
Attrition Cells/Scrubbers are typically fed by Separators™, Hydrosizers™ or Dewatering Screens to present the material at a high density to achieve the best scrubbing action possible. Operating densities vary depending on the application but are typically in the range of 72-75% solids by weight. To maintain correct operating density, dilution water is automatically added at rising power draw. In the event of excessive power draw, the motor shuts off to protect the motor, gearbox and shaft/paddles
Attrition Cells/Scrubbers are configured to provide the most efficient performance, producing a high shear environment in which particle-on-particle scrubbing scours the surfaces and liberates deleterious materials. Due to the higher levels of materials passing through the unit too quickly to be fully processed, multiple Attrition Cells/Scrubbers are used in series.
Material enters the Attrition Cell/Scrubber at the bottom and by displacement passes up through the tank, being subject to high velocity axial and radial motion to best provide particle-on-particle scrubbing action. The material overflows the Attrition Cell at the top and passes through to the next cell in the series, where the scrubbing is repeated. A series of weirs is provided to increase or decrease the total volume being processed in an Attrition Cell/Scrubber. Retention time is based on testwork and can vary between one and eight minutes. Greater retention times may end in diminishing returns for the energy consumed and capital investment.
In cases of severe contamination, interstage washing is used. In this type of application, the materials can be diluted and processed through a pump and Separator™ or other methods, and are then directed to the next stage for further attritioning.
The most commonly used Attrition Cell/Scrubber is a 1.7 m3 unit with multiple units in series. These can be round, square or octagonal. Larger Attrition Cells/Scrubbers are available; however, multiple smaller units are preferred due to their efficiency
Attrition Cells/Scrubbers can be used in glass sand, frac sand, mineral sand, clay, iron ore, and sand and gravel production, as well as in the preparation of flotation feeds and reagent washing. They are used as a part of an integrated process utilizing Hydrosizers™, Hydrocyclones/Separators™ and attrition technologies,
The typical retention time for clay removal using an Attrition Cell/Scrubber is between two and five minutes, but specifications and individual requirements vary. The only way to determine how long the retention time needs to be is to test the materials
Particle shape, size and mineralogy affect the wear life of Attrition Cells/Scrubbers, and sometimes materials of construction have to vary to suit the application. No manufacturer can guarantee wear life, but advanced knowledge of the materials being processed can help with the selection of wear materials and thicknesses to help maximize wear life.
In certain applications it is necessary to add chemicals to the Attrition Cell/Scrubber feed to improve the performance of the attrition process. Certain materials of construction are adversely affected by different chemistries, so it is important to consult the manufacturer before purchase and/or before the use of additional chemicals
McLanahan does not employ the use of side access to Attrition Cells/Scrubbers for safety reasons. As work components often have sharp edges, reaching inside the vessel and indexing the shaft rotation can lead to uncontrolled exposure to sharp surfaces and accidental engagement.
Extraction of the shaft assembly allows more controlled and more complete access to the assembly to evaluate any wear or damage. This allows the maintenance crew to remove/replace worn components with the greatest level of safety. Inspection of internal surfaces can also be carried out with the shaft assembly removed
McLanahan Attrition Cells are optimal for industrial (frac, glass, sports) and mineral sands to meet turbidity and color test requirements. They are designed to scrub the surfaces of particulates, liberate deleterious materials and break down particulates associated with durability
The leader in creating complete processing plants to produce frac sand needed in the oil and gas well drilling industry, McLanahan’s Frac Sand Plants are designed to remove clay impurities, as well as size and dewater sand. McLanahan process engineers work directly with customers to determine layout and equipment requirements for each deposit’s unique characteristics. Utilizing proven technologies, plants are engineered with the right equipment to meet each producer’s needs, including: centrifugal slurry pumps, Hydrocyclones and Separators™, Dewatering Screens, Fine Material Screw Washers, Hydrosizers®™, Attrition Scrubbers, Thickeners, and Filter Presses
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