Ball Mill | XingQing Machinery

Product OverviewProduct Overview

The Ball Mill is key equipment for grinding crushed materials. It is widely used in cement, silicate products, new building materials, refractories, fertilizers, black and non-ferrous metal beneficiation, and glass ceramics industries, for dry or wet grinding of various ores and other grindable materials. The Ball Mill is suitable for grinding various ores and other materials, widely used in beneficiation, building materials, chemical and other industries, available in dry and wet grinding modes. By discharge method, it can be divided into grid type and overflow type. A certain number of steel balls are loaded into the cylinder as grinding media. When the cylinder rotates, the grinding media are carried up by centrifugal force and friction, then fall to crush the material through the dual action of impact and grinding.

Working PrincipleWorking Principle

1

Feed

Material is continuously fed into the rotating cylinder through the feed device. The cylinder is pre-loaded with a certain quantity and gradation of steel balls as grinding media.

2

Lifting

The cylinder rotates at 60%-80% of critical speed. Steel balls are carried upward by centrifugal force and liner friction.

3

Falling Impact

When the steel balls reach a certain height, gravity overcomes centrifugal force and they fall in a parabolic trajectory, producing intense impact and grinding on the material to achieve crushing and pulverization.

4

Discharge

The ground material flows toward the discharge end driven by material level difference and airflow, discharged through the discharge device. Coarse particles are intercepted by the partition plate and returned for further grinding.

Power Transmission Path

Motor → Reducer → Pinion → Ring Gear → Cylinder → Liner → Grinding Media → Material

Technical ParametersTechnical Parameters

Model	Effective Volume (m³)	Ball Load MQG (t)	Ball Load MQY (t)	Ball Load MQS (t)	Capacity MQG (t/h)	Capacity MQY (t/h)	Capacity MQS (t/h)	Power (kW)	Weight (t)
Φ900×1800	1	1.3	1.7	2	0.9–1.6	1.7–3.2	2–3.7	15	4.2
Φ900×2100	1.1	1.5	1.9	2.3	1–1.9	2–3.7	2.3–4.3	18.5	4.9
Φ900×3000	1.6	2.2	2.8	3.3	1.4–2.7	2.9–5.4	3.3–6.2	22	7.6
Φ1200×2400	2.4	3.3	4.1	4.9	2.2–4	4.3–8	5–9.2	30	8.7
Φ1200×3000	3	4.1	5.2	6.2	2.7–5	5.4–10	6.2–12	37	9.5
Φ1200×4500	4.4	6.2	7.7	9.3	4–7.5	8.1–15	9.3–17	45	13
Φ1500×3000	4.8	6.6	8.3	10	4.3–8	8.6–16	10–19	75	15
Φ1500×4500	7.1	10	12	15	6.5–12	13–24	15–28	115	20
Φ1200×5700	9	13	16	19	8.2–15	16–31	19–35	135	24
Φ1830×3000	7.1	10	12	15	6.4–12	13–24	15–28	115	28
Φ1830×4500	10.6	15	18	22	10–18	19–36	22–41	155	32
Φ1830×6500	15.3	21	27	32	14–26	28–52	32–60	210	35
Φ1830×7000	16.5	23	29	34	15–28	30–56	35–64	210	37
Φ2100×3000	9.4	13	16	20	9–16	17–32	20–37	180	42
Φ2100×3600	11.3	16	20	24	10–19	21–38	24–44	210	48
Φ2100×4000	12.6	18	22	26	11–21	23–42	26–49	210	50
Φ2100×4500	14.1	20	25	30	13–24	26–48	30–55	245	52
Φ2100×7000	22	31	38	46	20–37	40–74	46–86	280	57
Φ2200×3600	12.5	17	22	26	11–21	23–42	26–49	210	52
Φ2200×4500	15.6	22	27	33	14–26	28–53	33–61	245	54
Φ2200×6500	22.5	31	39	47	20–38	41–76	47–88	320	60
Φ2200×7000	24.2	34	42	51	22–41	44–82	51–95	320	63
Φ2200×8000	27.8	38	48	57	26–46	49–90	57–104	380	67
Φ2400×3600	15	21	26	31	14–25	27–51	31–58	245	60
Φ2400×4500	18.7	26	33	39	17–32	34–63	39–73	380	65
Φ2400×6000	24.9	35	43	52	23–42	45–84	52–97	400	84
Φ2400×7000	29.1	41	51	61	26–49	53–98	61–113	400	92
Φ2700×3600	18.8	26	33	39	17–32	34–64	40–73	400	89
Φ2700×4500	23.5	33	41	49	21–40	43–80	49–92	450	108
Φ2700×6000	31.4	44	55	66	29–53	57–106	66–122	560	105
Φ2700×7000	36.6	51	64	77	33–62	67–124	77–143	630	110
Φ3200×4500	33.5	47	58	70	31–57	61–113	70–131	800	137
Φ3200×6000	44.7	62	78	94	41–76	81–151	94–174	1000	160
Φ3200×7000	52.2	73	91	109	47–88	95–176	110–203	1250	185

※ Specifications subject to change without notice. MQG = Grid type, MQY = Overflow type, MQS = Wet type.

Structure ComponentsStructure Components

Component	Function	Material / Features
Cylinder	Core rotating component, carries grinding media and material, withstands continuous impact and wear	Steel plate welded, with wear-resistant liner inside
Feed Device	Continuously feeds material into the cylinder, ensuring even feeding	Feed end hollow shaft + spiral conveyor
Discharge Device	Discharges ground fine material, coarse particles intercepted and returned	Discharge end hollow shaft + grid plate/overflow weir
Grinding Media	Steel balls fall and impact inside the cylinder, grinding the material	Forged steel balls / high-chromium cast balls, multi-stage gradation
Drive System	Drives the cylinder to rotate at set speed, providing crushing power	Motor + reducer + pinion + ring gear
Lining 衬板与隔仓板 Partition Plates	Protects cylinder from wear, separates chambers, optimizes media distribution	High manganese steel / high chrome steel / rubber, stepped design
Main Bearing	Supports cylinder smooth rotation, bears radial load	Plain bearing / rolling bearing, forced lubrication

Product FeaturesProduct Features

High Capacity

Single unit daily output can reach hundreds of tons, suitable for large-scale industrial continuous production. MQG/MQY/MQS three series cover all scenarios from laboratory to heavy mining.

Dry & Wet Dual Use

Flexible choice of dry or wet grinding based on process requirements. Dry type suitable for cement, coal powder; wet type suitable for beneficiation. Extremely adaptable.

Controllable Discharge Size

By adjusting steel ball gradation (large balls for impact + small balls for grinding), filling rate, and speed, precisely control discharge fineness to meet different downstream process requirements.

Mature & Stable Technology

Classic grinding equipment proven by a century of industrial verification. Stable and reliable operation, can be connected to DCS system for automated control and remote monitoring.

Strong Adaptability

Suitable for various ores and materials with Mohs hardness 1-9, from soft limestone to hard iron ore, all processed efficiently.

Rugged & Durable Structure

Heavy-duty welded cylinder + alloy steel main bearing + high-chrome cast steel liner. Key components designed for long service life under continuous heavy-load conditions.

Easy Maintenance

Modular design, quick replacement of liners and steel balls. Standardized lubrication system, low maintenance cost, short downtime, strong spare parts commonality.

Application FieldsApplication Fields

Mining Industry

Core grinding equipment in metal ore (iron, copper, gold, manganese, etc.) beneficiation plants, achieving full mineral liberation from gangue for subsequent flotation or magnetic separation.

Building Materials Industry

Raw meal grinding (limestone, clay) and cement grinding (clinker) in cement production lines, as well as grinding of gypsum and slag powder.

Chemical Industry

Ultra-fine grinding of chemical raw materials such as fertilizer materials (phosphate rock), pigments (titanium dioxide), and catalyst carriers. With classification equipment, can produce micron-level powders.

Power & Environmental Protection

Coal powder preparation in thermal power plants (steel ball coal mill), grinding coal into fine powder to improve combustion efficiency. Industrial waste slag recycling grinding for resource reuse.

Iron Ore Copper Ore Gold Ore Cement Clinker Limestone Quartz Sand Coal Powder Phosphate Rock Kaolin Feldspar Slag

Selection AdviceSelection Advice

Material Hardness: For Mohs hardness 6+ (iron ore, granite), recommend Φ2100 and above with high-chrome cast steel liners and larger diameter steel balls. For soft materials (limestone, coal), medium-small specs are optional.
Capacity Requirements: For daily throughput under 200 tons, recommend Φ1500×3000 ~ Φ1830×4500. For thousand-ton daily output, recommend Φ2400×7000 and above, achieving stable single-unit output of 50-100 t/h.
MQG vs MQY vs MQS: MQG grid type with forced discharge, suitable for coarse grinding and primary grinding. MQY overflow type with gravity discharge by material level difference, suitable for fine grinding. MQS wet type suitable for beneficiation processes, forming a closed circuit with classifier.
Fineness & Cylinder Length: For coarse grinding (discharge 0.3-0.15mm), choose short cylinder (L/D≈1-1.5). For fine grinding (discharge <0.074mm), choose long cylinder (L/D>3), can beCoordination with classification equipment for ultra-fine grinding.