Spiral classifier - Market Overview: The spiral classifier market is expected to grow at a CAGR of 7.5% during the forecast period from 2022 to 2030. This growth can be attributed to the increasing demand for efficient and accurate processing of materials.

 
Rake, spiral, and bowl classifiers use mechanical action to dewater, deslime or separate coarse bulk materials from finer materials or liquids. Drag classifiers consist of a chain-link conveyor or endless belt that is dragged through a solid-liquid mixture. Rake classifiers lift solid-liquid mixtures up onto a plate with a screen or rake. . Pornoanal

Spiral Classifiers are available in sizes up to 120″ diameter, three tank styles, single, double and triple pitch spirals, three degrees of spiral submergence —flexibility to provide a unit built for your job. Write for detailed recommendation on the correct size and type of Spiral Classifier to do your job economically and profitably.The concept of spiral classifiers cathodic protection presented in this paper may become an alternative to the anti-corrosion protection methods of machinery and equipment used now at the KGHM ...Mar 26, 2016 · Gravity Spiral Concentrator Working Principle. The gravity spiral circuit is designed to extract and concentrate “coarse gold’ from the recirculating load in the mill grinding circuit and hence prevent a build-up within that circuit and the eventual escape of some of that gold into the C.I.L. tanks and thereon into the final tails. (See fig. 4) The spiral classifier is widely applied for the following fields: combine with ball grinder into closed circulation for ore-sand separation in the ore separation plant; classify ore sand and fine sludge in gravity ore separation plant; classify the grain of ore pulp at the metal ore separation process; and remove sludge/water at the ore separation process.CLASSIFIER Pemisahan dengan alat classifier disebut proses klaisiskasi Pengertian klaisfikasi : Pemisahan bahan padat menjadi 2 fraksi atau lebih berdasarkan kecepatan gerak padatan dalam fluida. fKlasifikasi dibagi 2 : 1. Sizing pemisahan dengan klasifikasi untuk zat atau bahan yang sama densitasnya tetapi ukurannya berbeda.Jan 27, 2022 · Spiral classifier is a common classification equipment used in mineral processing plants. It has the characteristics of simple structure, reliable operation, large processing capacity, stable classification area and high classification efficiency. Below we briefly introduce its importance, working principle, application and main classification. The rotation speed of the commonly used spiral classifier is. To obtain coarse overflow, the speed of the spiral with a diameter of 2 m should not exceed 6 r/min, and with a diameter of 1 m or more should be controlled at 2-8 r/min. For example, for a spiral with a diameter of 0.3 m, in order to obtain a coarse overflow, the spiral speed can be ...Jul 31, 2023 · The Submerged Spiral Classifier Market is undergoing a remarkable transformation, fueled by cutting-edge technologies and a deep commitment to meeting user needs. Companies within the industry are ... Sep 8, 2023 · Submerged Spiral Classifier Market Enigma on a Global Stage | Phenomenal Growth Outlook to 2030 Sep 8, 2023 ... The Submerged Spiral Classifier Market is undergoing a remarkable transformation, fueled by cutting-edge technologies and a deep commitment to meeting user needs. Companies within the industry are ...Spiral Classifier Wet classification is the art of solid-liquid separators i.e spiral separator, separating the solid particles in a mixture of solids and liquids into fractions according to particle size or density by methods other than screening.Rake, spiral, and bowl classifiers use mechanical action to dewater, deslime or separate coarse bulk materials from finer materials or liquids. Drag classifiers consist of a chain-link conveyor or endless belt that is dragged through a solid-liquid mixture. Rake classifiers lift solid-liquid mixtures up onto a plate with a screen or rake.Submerged Spiral Classifier Market Enigma on a Global Stage | Phenomenal Growth Outlook to 2030 Sep 8, 2023 ... Product Features. 1.This classifier adopts sealing immersed bearing. 2. Independent hoisting equipment with strong reshipment power. 3. Wearable liner of bolt installed to prolong the service life. 4. Cell body in long and narrow shape can reach a good mixing effect and prolong the suspension time of materials.If you don't have the muscle power or time, let a spiral panning machine help you separate the gold from your concentrates and black sand much more quickly and easily. FREE SHIPPING on orders of $350 or more! To learn more about the manufacturer and use of the Desert Fox, Mountain Goat, and Pro Camel, scroll to the bottom of this page.These spiral classifier price types include vibrating shaker tables and alluvial washing machines, and they can be used alongside more precise separation tools. Choose from shaft tables and hydraulic tables that are equipped with hydraulics for conducting compression tests and come with distinct power capacities.4. Hydraulic spiral lifting device Spiral dewaterer model - SD The Metso Outotec spiral dewaterer model SD is a robust evolution of the spiral classifier for reliable operations in mill scale handling. The spiral dewaterer with special designed spiral and enlarged pool area is able to handle large flows of effluents, offering aThe ball mill and spiral classifier work together, to be a close circuit grinding system, to control the materials to be grinded as you want.More details ple... Spiral Classifier Wet classification is the art of solid-liquid separators i.e spiral separator, separating the solid particles in a mixture of solids and liquids into fractions according to particle size or density by methods other than screening.EIMCO-K.C.P. Offers Bridge mounted (B) type, Column Mounted (C) Type and Traction driven (T) type Classifiers mechanism for various applications. These operate on the common principle of moving settled solids to the center of principle of moving settled solids to the centre of the tank for removal, and differ principally in the method used to ...The spiral classifier such as the Akins classifier consists of a semi-cylindrical trough (a trough that is semicircular in cross-section) inclined to the horizontal. The trough is provided with a slow-rotating spiral conveyor and a liquid overflow at the lower end.The spiral speed and feed tonnage correlated negatively to the Mn grade with washing time correlating positively. Operating the spiral classifier at a feed rate, spiral speed and washing time of 6 t, 25 rev/min, and 30 min, respectively, yielded Mn grade of 53%. Nesans Spiral Classifier consists of an open trough with a chute provided for the input feed material. Before being fed into the spiral classifier, the dust from the screen is mixed with water and it is carried to the input chute through a slurry pump. The inlet flow is evenly distributed across the surface area of the spirals.A study was carried out to select the appropriate coatings for corrosion protection of the spiral classifier working at KGHM Polska Miedź S.A. Ore Concentration Plant. The abrasion resistance of selected protective coatings and wear-resistant linings was investigated using a DT-523 rotary abrasion tester with Taber CS-10 rubber abrasive discs. The average weight loss of the coatings after a ...The classifier is mainly composed of transmission device, spiral body, trough, lifting mechanism, lower support (bearing) and discharge valve. Spiral Classifier Advantages: 1、Simple structure, easy to maintain. 2、Easy operation and stable performance. 3、Gravity connection with Ball mills; slurry pump conveying is not necessary.The classifier is mainly composed of transmission device, spiral body, trough, lifting mechanism, lower support (bearing) and discharge valve. Spiral Classifier Advantages: 1、Simple structure, easy to maintain. 2、Easy operation and stable performance. 3、Gravity connection with Ball mills; slurry pump conveying is not necessary.Triveni Spiral Classifiers utilize an increased for maximum torque and quiet, trouble free. lead or helix angle to form the continuous high pitch performance. Spiral for greater raking capacity. The upper main bearing is over sized for normal. Classifier service. Also this bearing and gear pivot is on.The Global Spiral Classifier Market can be segmented based on various factors to gain a comprehensive understanding of its dynamics and opportunities. The segmentation allows for a more targeted ...The preferential classification benefit of cyclones is further illustrated in Table 2 which compares the metallurgical results of cyclones versus spiral classifiers in a copper grinding circuit. The cyclone produced an overflow product containing more copper in the finer size ranges where it will be subject to higher recovery in flotation. Aug 6, 2015 · To understand how these two classifiers make use of this settling action, a description of them is required. First, to have the classification happen, the slurry must be able to flow. This means the classifiers must be inclined. The working portion of these two classifiers are the RAKES or SPIRAL/screw which are placed into the flow of ore. To ... Rake, spiral, and bowl classifiers use mechanical action to dewater, deslime or separate coarse bulk materials from finer materials or liquids. Drag classifiers consist of a chain-link conveyor or endless belt that is dragged through a solid-liquid mixture. Rake classifiers lift solid-liquid mixtures up onto a plate with a screen or rake. Spiral classifier. Spiral classifier is one of the classifying equipment in mineral processing. It is suitable for classifying materials in the mineral processing plant as well as the desliming and dehydrating in the mineral washing operating process and widely applied to separate the particles into a number of products graded according to size in the complete closed loop together with ball ... Mokup of classifier, 2 principles, 1600 mm screw diameter. Still in use in several silica sand plant: wash drain and dedusting.The design of a McLanahan Fine Material Screw Washer provides significant advantages over other sand screws you could consider that include: Larger pool settling areas behind the feed box/baffle plate that provide higher retention of +75 micron (200 mesh) product sized solids. A machine design that has a 2.5" (65mm) gap between the screw shaft ...13.5.3.4 Spiral Concentrator. The spiral concentrator is a modern high-capacity and low-cost device. It is developed for concentration of low-grade ores and industrial minerals in slurry form. It works on a combination of solid particle density and its hydrodynamic dragging properties.Rake, spiral, and bowl classifiers use mechanical action to dewater, deslime or separate coarse bulk materials from finer materials or liquids. Drag classifiers consist of a chain-link conveyor or endless belt that is dragged through a solid-liquid mixture. Rake classifiers lift solid-liquid mixtures up onto a plate with a screen or rake.Aug 6, 2015 · To understand how these two classifiers make use of this settling action, a description of them is required. First, to have the classification happen, the slurry must be able to flow. This means the classifiers must be inclined. The working portion of these two classifiers are the RAKES or SPIRAL/screw which are placed into the flow of ore. To ... USA, New Jersey- The Global Spiral Classifier Market is set to embark on an extraordinary journey of growth and transformation from 2023 to 2030.This pivotal period will witness a convergence of ...A study on physical beneficiation of platinum group metals (PGMs) flotation tailings was carried out by means of spiral classifiers and a gravity separator (Knelson Concentrator – KC-CVD 6 unit).The ball mill and spiral classifier work together, to be a close circuit grinding system, to control the materials to be grinded as you want.More details ple... The spiral classifier is widely applied for the following fields: combine with ball grinder into closed circulation for ore-sand separation in the ore separation plant; classify ore sand and fine sludge in gravity ore separation plant; classify the grain of ore pulp at the metal ore separation process; and remove sludge/water at the ore separation process.Spiral classifier is used to treat alluvial placer, especially for those with high dissociation degree and flat shape of mineral monomer. Spiral classifier and ball mill generally cooperate, mostly used for mineral processing. The classifier has the characteristics of simple structure, reliable operation, convenient operation, high efficiency ...Spiral Classifier 【Capacity】: 10-900t/24h 【Moto power】: 3-30Kw 【Spiral diameter】: 300mm-3000mm 【Processible Materials】: Natural sand, artificial sand, machine-made sand. 【Application】: Clean mud and water or working with ball mill to control material size. Chat Online on WhatsApp Email Us Make A Quote Advantages Product StructureThe classifier designs differ mainly in the mode of removing the underflow and the overflow slurries. Immersed spiral or rakes are generally used for underflow slurries and an open launder carries the overflow. Figure 13.1 is a sketch of a spiral classifier where the spiral conveyor is installed within the bowl. The spiral operates along the ...Spiral classifiers work great and generally aren't a maintenance problem. The main problem is that most mills have outgrown them for direct use in closed circuits. The best bet would be to pump the mill discharge to the classifier and flow the sands by gravity back into the mill if direct feed can't be arranged.spiral classifier is a kind of small particles rough granding equipment. According to the difference in sedimentation rate of mineral particles and mud, the ...The spiral classifier is widely applied for the following fields: combine with ball grinder into closed circulation for ore-sand separation in the ore separation plant; classify ore sand and fine sludge in gravity ore separation plant; classify the grain of ore pulp at the metal ore separation process; and remove sludge/water at the ore separation process.Spiral classifiers. A typical spiral classifier is shown in Fig. 1. The geometry of a spiral is characterized by the length or number of turns, the diameter, the pitch and the shape of the trough (Burt, 1984). The spiral feed is a mixture of water and ground particles that is gravity fed at the top of the spiral.Spiral classifier is mainly composed of the driving device, the spiral body, the groove body, the lifting mechanism, the lower seat and discharge valve. The machine base adopts channel steel, the body adopts welded steel plate. Screw shaft parts use the pig iron, and wear resistance. Working Principle:Spiral classifier is used to treat alluvial placer, especially for those with high dissociation degree and flat shape of mineral monomer. Spiral classifier and ball mill generally cooperate, mostly used for mineral processing. The classifier has the characteristics of simple structure, reliable operation, convenient operation, high efficiency ...Sep 29, 2017 · It is evident that no linear classifier will be able to do a good job classifying spiral data where the boundary between two classes is a curve. A simple two layer network with RELU activation on the hidden layer automatically learns the decision boundaries and achieves a 99% classification accuracy on such a data set. Mar 26, 2016 · Gravity Spiral Concentrator Working Principle. The gravity spiral circuit is designed to extract and concentrate “coarse gold’ from the recirculating load in the mill grinding circuit and hence prevent a build-up within that circuit and the eventual escape of some of that gold into the C.I.L. tanks and thereon into the final tails. (See fig. 4) 13.5.3.4 Spiral Concentrator. The spiral concentrator is a modern high-capacity and low-cost device. It is developed for concentration of low-grade ores and industrial minerals in slurry form. It works on a combination of solid particle density and its hydrodynamic dragging properties. The spiral classifier agitates the pulp by spiral low-speed rotation, by which the fine particles float to the overflow, and the coarse particles sink to the bottom of the tank and are discharged ...Nesans Spiral Classifier consists of an open trough with a chute provided for the input feed material. Before being fed into the spiral classifier, the dust from the screen is mixed with water and it is carried to the input chute through a slurry pump. The inlet flow is evenly distributed across the surface area of the spirals.on a slope, with interrupted rake or spiral blades to move the settled solids to a central discharge cone. Tank diameters vary from 4 to 250 ft. Tank depths at center are 2 to 3 ft for small units and up to 25 ft for larger units. Hydraulic classifiers of the sizer and super-sorter types, Figs. 7 and 8, are narrow, deep, rectangular Jul 6, 2023 · USA, New Jersey- The Global Spiral Classifier Market is set to embark on an extraordinary journey of growth and transformation from 2023 to 2030. This pivotal period will witness a convergence of ... The design of a McLanahan Fine Material Screw Washer provides significant advantages over other sand screws you could consider that include: Larger pool settling areas behind the feed box/baffle plate that provide higher retention of +75 micron (200 mesh) product sized solids. A machine design that has a 2.5" (65mm) gap between the screw shaft ...on a slope, with interrupted rake or spiral blades to move the settled solids to a central discharge cone. Tank diameters vary from 4 to 250 ft. Tank depths at center are 2 to 3 ft for small units and up to 25 ft for larger units. Hydraulic classifiers of the sizer and super-sorter types, Figs. 7 and 8, are narrow, deep, rectangular Product Features. 1.This classifier adopts sealing immersed bearing. 2. Independent hoisting equipment with strong reshipment power. 3. Wearable liner of bolt installed to prolong the service life. 4. Cell body in long and narrow shape can reach a good mixing effect and prolong the suspension time of materials. Rake, spiral, and bowl classifiers use mechanical action to dewater, deslime or separate coarse bulk materials from finer materials or liquids. Drag classifiers consist of a chain-link conveyor or endless belt that is dragged through a solid-liquid mixture. Rake classifiers lift solid-liquid mixtures up onto a plate with a screen or rake.Dec 1, 2020 · This is an example of vanilla Tensorflow playground with no added features and no modifications. The run for Spiral was between 187 to ~300 Epoch, depending. I used Lasso Regularization L1 so I could eliminate coefficients. I decreased the batch size by 1 to keep the output from over fitting. Jun 18, 2023 · Spiral Classifier Market Emerging Trends and Forecast 2023-2030 Published: June 18, 2023 at 8:56 p.m. ET Spiral classifier is mainly composed of the driving device, the spiral body, the groove body, the lifting mechanism, the lower seat and discharge valve. The machine base adopts channel steel, the body adopts welded steel plate. Screw shaft parts use the pig iron, and wear resistance. Working Principle:Spiral classifier. Spiral classifier is one of the classifying equipment in mineral processing. It is suitable for classifying materials in the mineral processing plant as well as the desliming and dehydrating in the mineral washing operating process and widely applied to separate the particles into a number of products graded according to size in the complete closed loop together with ball ...Dec 1, 2020 · This is an example of vanilla Tensorflow playground with no added features and no modifications. The run for Spiral was between 187 to ~300 Epoch, depending. I used Lasso Regularization L1 so I could eliminate coefficients. I decreased the batch size by 1 to keep the output from over fitting. The mineral separation spiral classifier is used in the dressing plant to match with the ball mill to distribute the ore sand, or in the gravity dressing plant to classify the ore and mud. The particle size classification of the slurry in the metal beneficiation process and the desilting and dewatering of the washing Wait for homework.Lab Spiral Classifier. This Lab Spiral classifiers suitable for dewatering, medium drainage and desliming and wet and dry classifying for ore, Non-metallic materials, etc. Spiral classifier is a type of classifying equipment which realizes mechanical classification under the principle that materials settle in the liquid at different speeds due ...The rotation speed of the commonly used spiral classifier is. To obtain coarse overflow, the speed of the spiral with a diameter of 2 m should not exceed 6 r/min, and with a diameter of 1 m or more should be controlled at 2-8 r/min. For example, for a spiral with a diameter of 0.3 m, in order to obtain a coarse overflow, the spiral speed can be ... The classifier is mainly composed of transmission device, spiral body, trough, lifting mechanism, lower support (bearing) and discharge valve. Spiral Classifier Advantages: 1、Simple structure, easy to maintain. 2、Easy operation and stable performance. 3、Gravity connection with Ball mills; slurry pump conveying is not necessary.spiral separator D series. water for the food industry. Contact. Flow: 2 m³/h - 100 m³/h. It serves to separate and wash sand present in water. Water enters in the decantation hopper, where solids, after separation, decant on the bottom. A screw, with a very slow rotation speed, collects all the solids from the bottom and ...Spiral classifier is used for material classification with spirals used to stir and convey materials according to the difference in material settling velocities. It is a kind of gravitational and hydraulic classifiers. The specification of spiral classifiers is represented by the number and diameter of spirals.The preferential classification benefit of cyclones is further illustrated in Table 2 which compares the metallurgical results of cyclones versus spiral classifiers in a copper grinding circuit. The cyclone produced an overflow product containing more copper in the finer size ranges where it will be subject to higher recovery in flotation. A study on physical beneficiation of platinum group metals (PGMs) flotation tailings was carried out by means of spiral classifiers and a gravity separator (Knelson Concentrator – KC-CVD 6 unit).Dec 1, 2020 · This is an example of vanilla Tensorflow playground with no added features and no modifications. The run for Spiral was between 187 to ~300 Epoch, depending. I used Lasso Regularization L1 so I could eliminate coefficients. I decreased the batch size by 1 to keep the output from over fitting. spiral separator D series. water for the food industry. Contact. Flow: 2 m³/h - 100 m³/h. It serves to separate and wash sand present in water. Water enters in the decantation hopper, where solids, after separation, decant on the bottom. A screw, with a very slow rotation speed, collects all the solids from the bottom and ...Submerged Spiral Classifier Market report also includes a pricing analysis for each type, manufacturer, region, and global price from 2018 to 2030. This information will help stakeholders make ...Spiral classifier is used for material classification with spirals used to stir and convey materials according to the difference in material settling velocities. It is a kind of gravitational and hydraulic classifiers. The specification of spiral classifiers is represented by the number and diameter of spirals.Submerged Spiral Classifier Market Enigma on a Global Stage | Phenomenal Growth Outlook to 2030 Sep 8, 2023 ...Spiral Classifier Market report also includes a pricing analysis for each type, manufacturer, region, and global price from 2018 to 2030. This information will help stakeholders make informed ...The preferential classification benefit of cyclones is further illustrated in Table 2 which compares the metallurgical results of cyclones versus spiral classifiers in a copper grinding circuit. The cyclone produced an overflow product containing more copper in the finer size ranges where it will be subject to higher recovery in flotation.Mar 26, 2016 · Gravity Spiral Concentrator Working Principle. The gravity spiral circuit is designed to extract and concentrate “coarse gold’ from the recirculating load in the mill grinding circuit and hence prevent a build-up within that circuit and the eventual escape of some of that gold into the C.I.L. tanks and thereon into the final tails. (See fig. 4) The spiral classifier is widely applied for the following fields: combine with ball grinder into closed circulation for ore-sand separation in the ore separation plant; classify ore sand and fine sludge in gravity ore separation plant; classify the grain of ore pulp at the metal ore separation process; and remove sludge/water at the ore separation process.The ball mill and spiral classifier work together, to be a close circuit grinding system, to control the materials to be grinded as you want.More details ple... CLASSIFIER Pemisahan dengan alat classifier disebut proses klaisiskasi Pengertian klaisfikasi : Pemisahan bahan padat menjadi 2 fraksi atau lebih berdasarkan kecepatan gerak padatan dalam fluida. fKlasifikasi dibagi 2 : 1. Sizing pemisahan dengan klasifikasi untuk zat atau bahan yang sama densitasnya tetapi ukurannya berbeda.

Spiral classifier. Spiral classifier is one of the classifying equipment in mineral processing. It is suitable for classifying materials in the mineral processing plant as well as the desliming and dehydrating in the mineral washing operating process and widely applied to separate the particles into a number of products graded according to size in the complete closed loop together with ball .... Porn peru

spiral classifier

The design of a McLanahan Fine Material Screw Washer provides significant advantages over other sand screws you could consider that include: Larger pool settling areas behind the feed box/baffle plate that provide higher retention of +75 micron (200 mesh) product sized solids. A machine design that has a 2.5" (65mm) gap between the screw shaft ...Mokup of classifier, 2 principles, 1600 mm screw diameter. Still in use in several silica sand plant: wash drain and dedusting.These spiral classifier price types include vibrating shaker tables and alluvial washing machines, and they can be used alongside more precise separation tools. Choose from shaft tables and hydraulic tables that are equipped with hydraulics for conducting compression tests and come with distinct power capacities.Chapter 1: High Weir Spiral Classifier Market Product Definition, Product Types, Volume, and Revenue Analysis of Each Type in North America, Europe, Asia-Pacific, Latin America, Middle East, and ...Spiral Classifier 【Capacity】: 10-900t/24h 【Moto power】: 3-30Kw 【Spiral diameter】: 300mm-3000mm 【Processible Materials】: Natural sand, artificial sand, machine-made sand. 【Application】: Clean mud and water or working with ball mill to control material size. Chat Online on WhatsApp Email Us Make A Quote Advantages Product StructureMisconception 4: Fine Material Screws are recommended for cutting at a coarse sand size. Fine Material Screw Washers generally are not recommended for removing fine solids larger than 150 micron or 100 mesh. When a separation ranging from 150 to 800 micron (or 100 to 20 mesh) is required, other types of classifiers, like Hydrosizers™ (or ...XBM Mining is a leading global supplier of equipment and tools, service and technical solutions for the mining industry,especially specialized in ore benefic...Submerged Spiral Classifier Market Enigma on a Global Stage | Phenomenal Growth Outlook to 2030 Sep 8, 2023 ...High Weir Spiral Classifier, one of the segments analyzed in the report, is projected to record 2.3% CAGR and reach US$827.7 Million by the end of the analysis period. Taking into account the ...A study was carried out to select the appropriate coatings for corrosion protection of the spiral classifier working at KGHM Polska Miedź S.A. Ore Concentration Plant. The abrasion resistance of selected protective coatings and wear-resistant linings was investigated using a DT-523 rotary abrasion tester with Taber CS-10 rubber abrasive discs. The average weight loss of the coatings after a ...It is evident that no linear classifier will be able to do a good job classifying spiral data where the boundary between two classes is a curve. A simple two layer network with RELU activation on the hidden layer automatically learns the decision boundaries and achieves a 99% classification accuracy on such a data set.To understand how these two classifiers make use of this settling action, a description of them is required. First, to have the classification happen, the slurry must be able to flow. This means the classifiers must be inclined. The working portion of these two classifiers are the RAKES or SPIRAL/screw which are placed into the flow of ore. To ...Spiral classifier is a mechanical classification machine based on the principle that the specific gravity of solid particles is different in the speed of precipitation in liquid. During the beneficiation process, the ore needs to be ground to a certain fineness so that the fine-grained useful minerals and gangue can be fully dissociated and ... spiral classifier is a kind of small particles rough granding equipment. According to the difference in sedimentation rate of mineral particles and mud, the ...The rotation speed of the commonly used spiral classifier is. To obtain coarse overflow, the speed of the spiral with a diameter of 2 m should not exceed 6 r/min, and with a diameter of 1 m or more should be controlled at 2-8 r/min. For example, for a spiral with a diameter of 0.3 m, in order to obtain a coarse overflow, the spiral speed can be ....

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