Ball Mill Grade Discharge Design Fdp Our ball mills are industrial grade and designed for continuous operation equipped with oversize roller bearings and a complete drive system All wear parts are highly abrasion resistant and replaceable The capacity or throughput of a ball mill is directly linked to particle size of the ball mill discharge
As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
Feeding Granularity: ≤20-≤25mm
Applied Materials: Limestone, calcite, barite, dolomite, potassium feldspar, marble, talcum, gypsum, kaolin, bentonite, medical stone, rock phosphate, manganese ore, iron ore, copper ore, gold ore,quartz, active carbon, carbon black, ceramic, coal, etc.
Applicable Range: Cement, silicate product, new building material, refractory material, fertilizer, black and non-ferrous metal ore dressing and glass ceramics production industry, etc.more
Processing Capacity: depending on specific situation
Processed Materials: Copper, zinc, nickel, gold and other nonferrous metals, coarse and fine separation of nonmetals like coal, fluorite and talc.
Main Equipment : Jaw crusher, hammer crusher, ball mill, classifier, magnetic separator, flotation cell, thickener, dryer, etc.more
Production Capacity: 70-5,000 t/d
Raw Materials: Clay, mudstone, slate, gangue, coal ash, shale, sludge and industrial solid waste.
Production Processes: Crushing, batching, grinding, balling, burning, making coal powder, cooling finished products, screening and packing.more
Stone crusher plant whose design production capacity is 50-800T/H is mainly composed of vibrator feeder, jaw crusher, impact crusher, vibrating screen, belt conveyor, centralized electronic control and other equipment. Configuration of cone crusher and duDetails
Limestone is mainly composed of calcium carbonate (CaCO3), MO's Hardness 3 degrees. The limestone particles or powders can be used in building materials, road construction, metallurgy, chemical and other industries after crushing or grinding.Details
Application:Mining, metallurgy, building materials, highway, railway, water conservancy and chemical engineering.Details
Cement grinding plant is the final stage in the production of cement, which is separated from the finished cement production units. It mixes cement clinker with other certain amount of mixed materials for grinding, and then produces the finished cement.Details
where an approximate figure for the constant is 35 for rod mills 40 for overflow ball or pebble mills and 45 for grate discharge ball or pebble mills ç is specific gravity of grinding media for rods or balls normally 785 q is the charge volume in fraction of mill volume 40 040 nc is the mill speed in fraction of critical speedDetails
The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics Bond Work Index bulk density specific density desired mill tonnage capacity DTPH operating solids or pulp density feed size as F80 and maximum ‘chunk size’ product size as P80 and maximum and finally the type of circuit openclosedDetails
Ball Mills are classified in accordance to the type of discharge O DOVE Over Flow Ball Mills are suitable for almost all applications where higher grade of fines are required simple and trouble free Grinding method O DOVE Grate discharge Ball Mill usually works with a higher circulating load and thus produces very little extreme finesDetails
A Total Apparent Volumetric Charge Filling – including balls and excess slurry on top of the ball charge plus the interstitial voids in between the balls – expressed as a percentage of the net internal mill volume inside liners B Overflow Discharge Mills operating at low ball fillings – slurry may accumulate on top of the ball charge causing the Total Charge Filling Level to beDetails
Grate liners and ball mill liner The type of ball mill liner known as a grate liner is designed for discharge efficiency It allows the discharge of ground materials via slots With the Magotteaux range of alloys and their experience a longer lifetime and optimal grinding can be achievedDetails
If the cyclone underflow gold grade was higher than the cyclone overflow grade then you have free gold and you should look at putting a centrifugal concentrator in the grinding circuit For low tonnage operations you can feed 100 of the ball mill discharge to the concentrator this requires an extra pump but is worth the effortDetails
Grate discharge Dry Grate discharge Wet Overflow discharge Wet Figure 85 Effect of mill filling on power draft for ball mills The data is taken from Rexnord Process Machinery Reference Manual Rexnord Process Machinery Division Milwaukee 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 84Details
Grate discharge heads for ball mills are completely assembled in the shop with grates clamp bars pan liners and center discharge liners in place Depending upon available handling facilities the head or shell can be lined separately in a repair bay or after assembly of the mill proper in the trunnion bearingsDetails
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