Ball Mill

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What is a ball mill grinding?

The ball mill equipment developed by FTM Machinery is a grinding machine, which uses steel balls as the grinding medium. According to different grinding methods, ball mill can be divided into the dry and wet ways. In general, we adopt the wet grinding method for the ore dressing.

What materials can be processed by ball mill grinder?

The ball mill machine can grind many kinds of materials like limestone, diabase, calcium carbonate, quartz stone, iron ore, copper ore, gold ore, grindable materials, non-metallic ore, non-flammable and explosive materials.

How does a ball mill work?

Working principle of ball mill grinder

Firstly, the materials enter the first chamber of the mill uniformly through the hollow shaft of the feeder. The ball mill liners have different kinds of steel balls. When the cylinder rotates, the FTM Machinery ball mill brings the materials and the balls to a certain height and then let them fall.After continuous impact on materials and balls, the materials are ground roughly in the first chamber.

Secondly, the materials enter the second chamber through a single-layer compartment board. And the chamber is lined with a flat lining plate, some steel balls inside, then Fote Machinery ball mill is grinding these materials further. Finally, the materials are ground into a fine powder.

Last but not least, the powder is discharged through the discharging raft to complete the grinding work.

Ball Mill Technical Parameter

Model	Ball load (t)	Feeding size (mm)	Discharging size (mm)	Capacity (t/h)	Motor power (kw)	Total weight (t)
Ф900×3000	2.7	<20	0.075-0.89	1.1-3.5	22	6.98
Ф1200×4500	5	<25	0.074-0.4	1.6-5.8	55	15.6
Ф1500×4500	11	<25	0.074-0.4	3-6	110	22
Ф1500×5700	12	<25	0.074-0.4	3.5-6	130	25.8
Ф1830×3000	11	<25	0.074-0.4	4-10	130	34.5
Ф1830×4500	15	<25	0.074-0.4	4.5-12	155	38
Ф2100×3000	15	<25	0.074-0.4	6.5-36	155	45
Ф2100×4500	24	<25	0.074-0.4	8-43	245	56
Ф2100×7000	26	<25	0.074-0.4	12-48	280	59.5
Ф2200×4500	27	<25	0.074-0.4	9-45	280	54.5
Ф2200×6500	35	<25	0.074-0.4	14-26	380	61
Ф2200×7000	35	<25	0.074-0.4	15-28	380	62.5
Ф2400×4500	30	<25	0.074-0.4	8.5-60	320	72
Ф2700×4500	48	<25	0.074-0.4	26-90	480	102
Ф3600×4500	90	<25	0.074-0.4	As per process conditions	850	169
Ф3600×6000	110	<25	0.074-0.4	As per process conditions	1250	198
Ф4000×5000	121	<25	0.074-0.4	45-208	1500	230

Why does ball mill grinder attract so many miners to invest?

1.Investment Attractiveness. Ball mills are popular with investors in the mining industry due to their ability to produce fine particle sizes, ease of use, high productivity, straightforward operation, and steady performance, ensuring a promising return on investment.

2.Customizable Grinding Efficiency. The ball mills supplied by Fote Machinery are known for their fine grinding results, typically discharging materials at a fineness of 200 mesh. Importantly, this fineness can be adjusted to suit various process requirements.

3.Enhanced Liner Durability. Commonly used ball mill linings, including high chromium cast iron, low alloy wear-resistant cast steel, and high manganese steel, demonstrate robust wear resistance. This resilience extends the lifespan of the liners, consequently lowering maintenance expenses and improving the overall equipment efficiency for mining operations.

What are the similarities and differences between the rod mill and the ball mill?

Similarities

The working principle is basically the same. Regardless of the ball mill or the rod mill, when the cylinder rotates, the grinding media (ball or rod) installed in the cylinder body are lifted to a certain height, and then they are thrown at a certain linear velocity, so the grinding media causes some impact and crunch to materials of the cylinder body. Finally, the grinding work is finished.

Differences

Grinding media: The grinding media inside the cylinder are different. The ball mill media is the ball mill balls. The grinding media of rod mill is a steel section, and the ceramic ball mill is the ceramic ball, as is shown in the following picture.

Customer Case — Gold Ball Mill for Tailing Process

We have a customer called Mike Reynolds, in beaver Utah. And he has some dump material at his mine called horseshoe. Because the dump materials do not have high enough grade to get a good recovery, Mike called them as tailing. However, silver and gold metals are still inside and he wants to process the tailings into concentrates again.

This process is simple, by taking sand tailings into a feeder hopper, then relying to a conveyor belt. On the bottom of the feeder, there is a machine that can adjust the amount of sand that’s going onto the belt, so he knows exactly how much material fed into the mill site per hour and it can be adjusted accordingly if needing to go faster or slower.

After the conveyor belt, sand tailings will going to the ball mill machine, which is a big drum that has steel balls inside about three-quarter-inch around. And every time when drums going around, milling balls fall on top of tailings and crush them into a finer mesh and liberates the metal from the rest tailings.

After the tailing goes through the ball milling machine, it is fed into the machine called shaking table. There are three tables stacked on tope of each other. They are approximately 8 feet by 20 feet, 17 feet high. The tables are used for gravity separation, no chemicals used here, shaking forth and back. Because the weight of gold metal is heavier than the weight of sand, sand waste will be one direction, the heavy metals go to the other direction. At the end, the heavy metals are trapped as concentrates.

As one of the well-known ball mill manufacturers in China, FTM Machinery has always been adhering to the purpose of “ integrity-basis and quality-first”, and striving to build the most advanced ore dressing equipment in China. We not only have industrial ball mill, but also manufacture the small ball mill. The small ball mill in our ball mill grinding factory is also for sale in South Africa, zimbabwe, india, philippines, etc. If you want to grind limestone or other materials with small capacity, the small ball mill is prepared for you. We sincerely welcome friends at home and abroad to come and choose the equipment you want.