Gold ore grinding ball mill for rock gold mine beneficationProduct Description A ball mill is a type of grinder used to grind, blend and sometimes
for mixing of materials for use in mineral dressing processes,
paints, pyrotechnics, ceramics and selective laser sintering. It
works on the principle of impact and attrition: size reduction is
done by impact as the balls drop from near the top of the shell. A ball mill consists of a hollow cylindrical shell rotating about
its axis. The axis of the shell may be either horizontal or at a
small angle to the horizontal. It is partially filled with balls.
The grinding media is the balls, which may be made of steel (chrome
steel), stainless steel, ceramic, or rubber. The inner surface of
the cylindrical shell is usually lined with an abrasion-resistant
material such as manganese steel or rubber. Less wear takes place
in rubber lined mills. The length of the mill is approximately
equal to its diameter.In case of continuously operated ball mill, the material to be
ground is fed from the left through a 60° cone and the product is
discharged through a 30° cone to the right. As the shell rotates,
the balls are lifted up on the rising side of the shell and then
they cascade down (or drop down on to the feed), from near the top
of the shell. In doing so, the solid particles in between the balls
and ground are reduced in size by impact. The ball mill is used for grinding materials such as coal,
pigments, and feldspar for pottery. Grinding can be carried out
either wet or dry but the former is performed at low speed.
Blending of explosives is an example of an application for rubber
balls. For systems with multiple components, ball milling has been
shown to be effective in increasing solid-statechemical reactivity.
Additionally, ball milling has been shown effective for production
of amorphous materials.
A ball mill, a type of grinder, is a cylindrical device used in
grinding (or mixing) materials like ores, chemicals, ceramic raw
materials and paints. Ball mills rotate around a horizontal axis,
partially filled with the material to be ground plus the grinding
medium. Different materials are used as media, including ceramic
balls, flint pebbles and stainless steel balls. An internal
cascading effect reduces the material to a fine powder. Industrial
ball mills can operate continuously, fed at one end and discharged
at the other end. Large to medium-sized ball mills are mechanically
rotated on their axis, but small ones normally consist of a
cylindrical capped container that sits on two drive shafts (pulleys
and belts are used to transmit rotary motion). A rock tumbler
functions on the same principle. Ball mills are also used in
pyrotechnics and the manufacture of black powder, but cannot be
used in the preparation of some pyrotechnic mixtures such as flash
powder because of their sensitivity to impact. High-quality ball
mills are potentially expensive and can grind mixture particles to
as small as 5 nm, enormously increasing surface area and reaction
rates.
The grinding works on the principle of critical speed. Critical
speed can be understood as that speed after which the steel balls
(which are responsible for the grinding of particles) start
rotating along the direction of the cylindrical device; thus
causing no further grinding.
Ball mills are used extensively in the mechanical alloying process
in which they are not only used for grinding but for cold welding
as well, with the purpose of producing alloys from powders. Product name | Factory sales quality mining ore wet stone grinding ball mill for
salel | Ball Mill Type | Mine ball mill & Mining ball mill | Cylinder diameter | 1500-8000 mm | Overflow Ball Mill | 1.5x3.0~ 8x12m | Application | grinds ores and other materials |
Mine Ball Mill Application:
A ball mill grinds ores and other materials to a typical product
size of 35 mesh or finer.
The feed to a ball mill is prepared by...
· Single or multistage crushing and screening
· Crushing, screening, and/or rod milling
· Primary crushing and autogenous/semiautogenous grinding
Mine Ball Mill Normal feed sizes:
· 80% passing 1/4" (6 mm or finer) for hard ores
· 80% passing 1" (25 mm or finer) for softer ores
(Larger feed sizes can be tolerated depending
The length to diameter ratio of cylindrical mills range from 1 to 1
through 3 to 1. When the L/D ratio is 2 to 1 or greater, werefer to
the mill as a Tube Mill.
The two most popular types of ball mills are…
Grate or Diaphragm Discharge Ball Mill
In the discharge end of this mill, a slotted full diameter or
partial diameter grate with discharge lifter assembly conveys the
material to the discharge trunnion opening. The grate serves to
retain balls, tramp, and coarse material. A gradient created
between the feed opening and the discharge slots eases the flow of
material.
Trunnion Overflow Discharge Ball mill
A trunnion overflow mill has an open discharge end. Material flows
through the trunnion as a result of the pulp gradient between the
feed and discharge openings. A reverse helix in the discharge
trunnion liner retains balls in the mill.
LUOYANG ZHONGTAI Ball Mill Feature
♦ The cylindrical mill adopts the driving type edge-driving,
center-driving, edge-driving with multi-point meshing, etc; driven
by asynchronous motor +reducer +pinion and gear as well as
synchronous motor +
air lclutch + pinion and gear.
♦ Generally supported by static-dynamic pressure bearing on both
ends. Fuuly closed self-aligning 120º osculation rocker bearing is
used. Also single or double slipper staic- dynamic bearings can be
used. The bush is made by NC machine.
♦ The large open gear is designed using AGMA standard, Equipped
with reliably sealed gear housing and grease ahtomatic spraying
lubrication system.
The shell is key part of a mill. Carry out finite element analysis
on it with computer to ensure the reliable operation;
♦ The shell is automatically welded, ultrasonic inspected,
wholly annealed and machined by large special machine tools on one
chucking; there special seal on static-dynamic connection parts ,
ch as feed and discharge hoper, trunnion, etc, to prevent oil and
slurry leakage;
♦ The liner is of wear-resistance material mad by our
company, wich has been specially heat-treated, with high hardness
and long service life. Also other wear-resistance casting or rubber
liner can be used;
♦ There are slow speed drive for medium and large mill;
♦ The high and low pressure lubricating station is equipped for
medium and large mill;
♦ The control and protection system is controlled by PLC. |
1.Main Technical Parameters of Wet Grate Ball Mill: Model | Cylinder diameter | Cylinder length | Effective volume | Rotate speed | Max. ball loading capacity | Motor | Size (L×W×H) | Weight | | Power | Speed | | | mm | mm | m3 | r/min | t | kw | r/min | m | t | | MQS12×24 | 1500 | 3000 | 5 | 26.6 | 9 | 95 | 742 | 6.4×2.9×2.6 | 18 | | MQS15×15 | 1500 | 1500 | 2.3 | 29.2 | 4.8 | 60 | 725 | 5.7×3.2×2.8 | 13.7 | | MQS15×24 | 1500 | 2400 | 3.7 | 29.2 | 7.6 | 90 | 730 | 6.9×3.3×2.8 | 16.5 | | MQS15×30 | 1500 | 3000 | 4.6 | 26.6 | 10 | 90 | 742 | 7.6×3.4×2.8 | 19.5 | | MQS21×30 | 2100 | 3000 | 9.4 | 22.1 | 20 | 220 | 740 | 8.5×4.65×3 | 45 | | MQS24×30 | 2400 | 3000 | 12.2 | 21 | 25 | 250 | 980 | 8.8×4.7×4.4 | 55 | | MQS24×70 | 2400 | 7000 | 26.66 | 21 | 54 | 475 | 740 | 14.3×5.8×4.4 | 67 | | MQS27×21 | 2700 | 2100 | 10.6 | 19.7 | 22 | 280 | 733 | 9.7×6.5×4.8 | 69 | | MQS27×36 | 2700 | 3600 | 18.5 | 20.5 | 39 | 400 | 187.5 | 12×5.8×4 | 74 | | MQS27×40 | 2700 | 4000 | 20.5 | 20.24 | 38 | 400 | 187.5 | 12.4×5.8×4.7 | 77 | | MQS27×60 | 2700 | 6000 | 34.34 | 19.5 | 53 | 630 | 589 | 12×5.7×4.5 | 84 | | MQS29×41 | 2900 | 4100 | 26 | 19.34 | 42 | 450 | 740 | 9.9×6.1×5.1 | 76.1 | | MQS31×64 | 3100 | 6400 | 43.7 | 18.3 | 56 | 1000 | 167 | 15.2×6.98×5.8 | 141 | | MQS32×31 | 3200 | 3100 | 22.65 | 18.3 | 46.9 | 500 | 167 | 13.9×7.3×6.0 | 109 | | MQS32×36 | 3200 | 3600 | 26.3 | 18.3 | 54 | 630 | 167 | 14.3×7.3×6.0 | 116.94 | | MQS32×40 | 3200 | 4000 | 29.2 | 18.2 | 60 | 710 | 980 | 14.7×7.3×6.0 | 121.4 | | MQS32×45 | 3200 | 4500 | 32.9 | 18.3 | 68.5 | 800 | 167 | 15.2×7.3×5.9 | 126.23 | | MQS32×54 | 3200 | 5400 | 39.4 | 18.3 | 81.6 | 1000 | 167 | 16.6×7.3×6.1 | 135.4 | | MQS36×45 | 3600 | 4500 | 41.4 | 17.25 | 86 | 1000 | 167 | 13.5×7.3×6.3 | 153.1 | | MQS36×60 | 3600 | 6000 | 54 | 17.3 | 112 | 1400 | 167 | 15.5×8.3×6.3 | 190.6 | | MQS36×85 | 3600 | 8500 | 79 | 17.4 | 144 | 1800 | 743 | 20×8.2×7.1 | 260.89 | | MQS40×60 | 4000 | 6000 | 69.8 | 16.0 | 126 | 1500 | 200 | 17.4×9.34×7.5 | 215.5 | | MQS40×67 | 4000 | 6700 | 76 | 16.0 | 155 | 1600 | 980 | 16×8.43×7.5 | 235.2 | | MQS40×13.5 | 4000 | 13500 | 157 | 16.5 | 280 | 3300 | 980 | 24.2×9.9×7.8 | 284/375 |
Our Services | Aftersales service LUOYANG ZHONGTAI able to provide: 1. ENGINEERED SPARES - DESIGN AND MANUFACTURING 2. LARGE VOLUME STEEL AND IRON CASTING FOUNDARIES 3. HUGE MACHINE SHOP CAPABILITIES 4. TRAINING PROGRAMMES 5. PREVENTATIVE MAINTENANCE PROGRAMS 6. PREVETATIVE MAINTENANCE SERVICES 7. COMPREHENSIVE MAINTENANCE PROGRAMS LUOYANG ZHONGTAI’s Field Service Engineers are trained specifically
in the LUOYANG ZHONGTAI brand group products but are capable of
undertaking the servicing of other OEM brands. Our technicians are equipped with the most advanced technological
diagnostic equipment available to trouble shoot your equipment to
optimise performance and minimise down time. LUOYANG ZHONGTAI also has an extensive capability in supplying all
you consumable and electrical/ mechanical spare part needs. |
FAQ Q: Why we believe in luoyang zhongtai industries co., ltd: A: 1. More than 30 years experience. 2.We are the leading professional supplier of
mining machinery, construction machinery, machines casting and
forged parts 3. All products achieved ISO9901:2000
quality management certificate and CE, ROHS certificates. Q:Delivery time A: parts lead time 1-2months, machines 2-3months. Q:Payment terms A: Accept payment type: T/T, L/C, Western union,Cash. 30% deposit when signed contract. Full payment paid before shipping Q: Quality warranty? A: guarantee time: one year for main machinery. If something wrong
we will provide the technical advice and find solution immediately.
For those wearing parts we guarantee high quality parts for
long-term supply. Q: After sales service? A: we can supply technical guide for machines running test and
parts maintenance if end user needs. |
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