If finer grinding is wanted two or three stage grinding is advisable as for instant primary rod mill with 75100 mm 3″4″ rods secondary ball mill with 2540 mm1″1½” balls and possibly tertiary ball mill with 20 mm ¾” balls or cylpebs
Processing Specifications: 6-20mm
Yield: 2.8-3.6 tons/hour (crude fiber)
Pellet Making Temperature: 80-100(Celsius)
Processing Ability: 0.2–16 m³/min
Processed Materials: Non-ferrous metal minerals such as copper, lead, zinc, molybdenum, cobalt, tungsten, antimony etc.
Applications: The machine can be used to separate nonferrous metal, ferrous metal, noble metal, nonmetallic mine, chemical material and recycle mine.
Rotation Speed: 0.1–5 r/min
Production Capacity: 180-10000t/d
Product Specification: Φ2.5×40m-Φ6.0×95m
Total Weight: 1.8–204.6t
Charge Amount: 1.8-204.6t
Processing Ability: 5.6–6250t/d
Cylinder Capacity: 9-285(m³)
Processing Capacity: 1.9-76TPH
Application Area: Coal industry, construction industry, mineral industry, chemical industry.
Production Capacity: 200,000-500,000 tons per year
Component Parts: Material storage tank, sand dryer, batching apparatus, mixer, dry powder packing machine, dust collector and conveyor.
Application Fields: To produce single component and multiple component mortar products such as dry-mixed mortar, water proof mortar, adhesive mortar, plaster anti-crack mortar and hollow glass bead inorganic thermal mortar.
Main Equipment:Jaw crusher, impact crusher, hammer crusher, vibrating screen, classifier, ball mill, etc.
Application Area:Building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal, etc.
As a pure natural stone with high usage value, river gravel is formed in the long-term impact, squeeze and friction function. River gravel generally shows the color of black, white, yellow, red, green gray, etc.
Main Equipments: jaw crusher, cone crusher, ball mill, flotation cell, thickner and bucket hoist conveyor.
It is normally not a big problem but it depends on the size of the small scale mill and the operation mode In dry grinding we have close relation between small and large scale We have used small lab units with 400 and 600 mm diameter and scaled it up to 3 m mills with good results
Metso has designed manufactured and installed over 8000 ball and pebble mills all over the world for a wide range of applications Some of those applications are grate discharge peripheral discharge dry grinding special length to diameter ratio high temperature milling oprations and more
In the past few decades a plethora of research work has been published that dealt with ball mill scaleup The first systematic scaleup procedure was proposed by Bond By means of a set of grinding experiments conducted in a laboratory mill a parameter known as “Bond’s work index” is determined
6 Conclusion In this work the scaleup method of the planetary mill has been investigated by using the impact energy of balls Firstly the correlation between the grinding rate and the specific impact energy of balls calculated from DEM has been examined in order to confirm the usage of this simulation technique for evaluating the milling conditions
The High Energy Ball Mill Emax and MM 500 were developed for grinding with the highest energy input The innovative design of both the mills and the grinding jars allows for continuous grinding down to the nano range in the shortest amount of time with only minor warming effects
The CRRK series of wet grinding rod mills are tabulated below The grinding charge in a ball mill consist of cast or forged steel balls These balls are fed together with the feed and consequently ball mills can be in operation for months without stopping The ball size is often in the diameter range of 2075 mm
Silicon Nitride Balls are very highcost grinding media that are used for milling same materials silicon nitride ball to mill silicon nitride materials to avoid contamination They are now available in 2mm and 3mm and sizes up to 25mm They are a special order item
For these tasks RETSCH offers a comprehensive range of the most modern mills and crushers for coarse fine and ultrafine size reduction of almost any material The choice of grinding tools and accessories ensures that our instruments provide for contaminationfree and reliable sample preparation prior to laboratory analysis
Nelson Machinery sells new used grinding mills including ball mills SAG mills tower mills Raymond roller mills Equip yourself with the gold standard
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