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Ball Mill

Posting date : Jun 05, 2019

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dry grinding ball mi

The Handling Materials and Main Types of Ball Mill:

Ball mill is a key equipment for grinding materials, widely used in powder-making production line such as cement, silicate sand, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc.Ball mill can grind various ores and materials with the dry type or wet type. There are two kinds of ball mills, grate type and overfall type due to different ways of discharging material.

The Interior Structure of Ball Mill:

The machine is composed by feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbing process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The machine is in stable and reliable working condition.Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.

The Working Principle of Ball Mill:

This machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, drive by outer gear and two hoppers. The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. The hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by the barrel and grind material. After the kibbling in the first hopper, by monolayer partition panel, the material will enter the second hopper, which has plane scale board with steel ball inside to grind material. The powder material will be discharged from the grid plate to finish the grinding.

Model	Shell rotation speed （r/min）	Ball load (t)	Feeding size (mm)	Discharging size (mm)	Capacity(t/h)	Motor power (kw)	Total weight (t)
Ф900×1800	36-38	1.5	≤20	0.075-0.89	0.65-2	18.5	5.85
Ф900×3000	36	2.7	≤20	0.075-0.89	1.1-3.5	22	6.98
Ф1200×2400	36	3	≤25	0.075-0.6	1.5-4.8	30	13.6
Ф1200×3000	36	3.5	≤25	0.074-0.4	1.6-5	37	14.3
Ф1200×4500	32.4	5	≤25	0.074-0.4	1.6-5.8	55	15.6
Ф1500×3000	29.7	7.5	≤25	0.074-0.4	2-5	75	19.5
Ф1500×4500	27	11	≤25	0.074-0.4	3-6	110	22
Ф1500×5700	28	12	≤25	0.074-0.4	3.5-6	130	25.8
Ф1830×3000	25.4	11	≤25	0.074-0.4	4-10	130	34.5
Ф1830×4500	25.4	15	≤25	0.074-0.4	4.5-12	155	38
Ф1830×6400	24.1	21	≤25	0.074-0.4	6.5-15	210	43
Ф1830×7000	24.1	23	≤25	0.074-0.4	7.5-17	245	43.8
Ф2100×3000	23.7	15	≤25	0.074-0.4	6.5-36	155	45
Ф2100×4500	23.7	24	≤25	0.074-0.4	8-43	245	56
Ф2100×7000	23.7	26	≤25	0.074-0.4	12-48	280	59.5
Ф2200×4500	21.5	27	≤25	0.074-0.4	9-45	280	54.5
Ф2200×6500	21.7	35	≤25	0.074-0.4	14-26	380	61
Ф2200×7000	21.7	35	≤25	0.074-0.4	15-28	380	62.5
Ф2200×7500	21.7	35	≤25	0.074-0.4	15-30	380	64.8
Ф2400×3000	21	23	≤25	0.074-0.4	7-50	245	58
Ф2400×4500	21	30	≤25	0.074-0.4	8.5-60	320	72
Ф2700×4000	20.7	40	≤25	0.074-0.4	22-80	380	95
Ф2700×4500	20.7	48	≤25	0.074-0.4	26-90	480	102
Ф3200×4500	18	65	≤25	0.074-0.4	As per process conditions	630	149
Ф3600×4500	17	90	≤25	0.074-0.4	As per process conditions	850	169
Ф3600×6000	17	110	≤25	0.074-0.4	As per process conditions	1250	198
Ф3600×8500	18	131	≤25	0.074-0.4	45.8-256	1800	260
Ф4000×5000	16.9	121	≤25	0.074-0.4	45-208	1500	230
Ф4000×6000	16.9	146	≤25	0.074-0.4	65-248	1600	242
Ф4000×6700	16.9	149	≤25	0.074-0.4	75-252	1800	249
Ф4500×6400	15.6	172	≤25	0.074-0.4	84-306	2000	280
Ф5030×6400	14.4	216	≤25	0.074-0.4	98-386	2500	320
Ф5030×8300	14.4	266	≤25	0.074-0.4	118-500	3300	403
Ф5500×8500	13.8	338	≤25	0.074-0.4	148-615	4500	525

Ball grinding mills are widely used in production industries, such as cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and ferrous metals and glass ceramics and others. It can grand things in dry-type and wet-type for all kinds of ore and other grindable materials.

The Structure Characteristics of the Ball MillThe ball mill consists of feeding parts, discharging parts, rotary parts, transmission parts (reducer, small transmission gear, motor, electronic control) and other main parts. The hollow shaft adopts cast steel, and the inner lining of it can be dismantled. The rotary large gear is machined by casting hobbing process, with a wear-resistant lining plate in the barrel, which has the ability of wear resistance. Our machine runs smoothly and has reliable performance. According to the material and discharge way, we can choose dry-type ball mill or wet-type ball mill.

Quick-wear Parts of the Ball MillThe quick-wear parts of the ball mill mainly refer to the lining boards, the wear and usage time of the liner are related to the cost and production effect of the ball mill. Then how to identify the advantages and disadvantages of the lining boards. We can conclude it mainly from three steps, the first to see is the lining plate casting and smelting process, the next step is to check whether the lining plate quenching and tempering treatment are qualified, and at last, we need to look at the lining board material carefully. At present, the common lining materials in the market are high chromium cast iron, low alloy wear-resistant cast steel and high manganese steel material. These three kind of materials of lining boards of the three kinds of have good wear resistance ability. GUIKUANG machinery welcome you to our factory to inspect the production process of ball mills and the lining plate’s manufacturing techniques.

The Operation Principle of the Ball MillThe material is entered into the hollow shaft by the feeding device, and then it enters the first warehouse of the ball mill evenly. There are stepped lining plates or corrugated lining plates with different sizes of steel balls inside the warehouse. The cylinder rotates to produce centrifugal force for bringing the steel ball to a certain height and then it falls down. This produces heavy blow and grinding effects to the material. After the rough grinding process, the material enters the second warehouse through a single clapboard. The warehouse is lined with a scale-board with steel balls for further grinding. The powder is discharged by the discharging grate plate to finish the grinding operation.

The Classifications of the Ball MillAccording to the different materials processed by the ball mill, GUIKUANG machinery produces the following kinds of ball mill, such as gold ball mill, black manganese ore ball mill, nickel ore ball mill, tin ore ball mill, copper ore ball mill, pomegranate ball mill, andalusite ball mill, aluminum grey ball mill, molybdenum ore ball mill, fluorite ball mill and so on.