Rod Mill Sand Maker

Feed Size:: ≤ 25 mm

Capacity:: 0.65-200T/H

Applicable Materials:: Feldspar, quartz, ores, refractory materials, cement, steel grit, slag powder, copper ore, iron ore, gold placers, concrete aggregates, asphalt aggregates, etc.

Application Range:: Widely employed in metal and non-metal mines, as well as in the water conservancy and building materials sectors, for grinding various ores or rocks.

This equipment controls the output particle size (e.g., 0.075–0.89 mm) by adjusting parameters such as the number of grinding rods, feed particle size, and water flow velocity. It employs an open-circuit wet production process to prevent over-grinding of rare metals.

Categories: Rod Mill Sand Maker, Sand-making Machinery

Description

Product Overview

The rod mill sand-making machine is a highly efficient sand-producing apparatus utilising steel rods as grinding media. Primarily employed for crushing hard and brittle materials such as feldspar, quartz, and ores, it is suitable for aggregate processing and fine mineral crushing within sectors including building materials, metallurgy, and mining. Its core structure comprises a rotating cylinder, a reduction transmission system, and steel rod media. Material pulverisation is achieved through centrifugal and frictional forces, with compatibility for low-speed synchronous motors or gear reducers as drive units.

Working Principle

The rod mill sand-making machine is driven by an electric motor via a reduction gearbox and peripheral large gear, or directly by a low-speed synchronous motor through the peripheral large gear, causing the cylinder to rotate. The cylinder contains suitable grinding media—steel rods. Under the combined effects of centrifugal force and friction, the grinding media are elevated to a certain height before being discharged in a projectile or free-fall state. The material to be ground is continuously fed into the cylinder through the feed inlet, where it is crushed by the moving grinding media. The product is then discharged from the machine via the combined forces of overflow and continuous feeding, ready for subsequent processing stages.

Core Components of a Ball Mill

1. Cylinder:
As the core grinding chamber, it houses steel rod media within which materials are pulverised through the impact and discharge action of the falling rods.

2.Drive System:
Comprising a reduction gearbox, large and small gears, or a low-speed synchronous motor, this system transmits power from the motor to the cylinder, driving its rotation.

3.Steel Rod Media:
Serving as the direct grinding medium, these rods impact and grind materials through movement within the cylinder. Their length, diameter, and filling volume directly influence output particle size and efficiency.

4. Feeding and Discharging Devices:
The feeding device continuously conveys material into the cylinder, while the discharging device expels the crushed product via overflow or continuous discharge force.

5. Lubrication system:
Lubricates critical components such as main bearings and gears to reduce wear, lower failure rates, and extend equipment lifespan.

6.Slow-speed drive unit:
Used after prolonged equipment shutdown to rotate the drum and break up any material that may have caked inside, ensuring smooth restarting.

Gallery

Features

Energy savings

Achieves over 40% energy savings compared to older equipment. Produces more uniform particle sizes with fewer coarse particles and less fines.

Product particle size is uniform

When coarse particles are entrained within the material ascending along the liner, the rod mill allows fine particles to pass through the gaps, which also facilitates the crushing of coarse particles.

High throughput

During the grinding process, the grinding media in rod mills make line contact with the ore, thereby exhibiting a degree of selective grinding action.

Less over-grinding occurs

The particle size characteristics of rod mill products are related to the grinding process of ore within the mill. When the rods strike the ore, they first impact the coarse particles before grinding the finer ones, thereby reducing the risk of over-grinding.

Technical Parameters

Specification model	Barrel Size (mm)	Effective volume of cylinder (m3)	Ball loading capacity (t)	Cylinder speed (r/min)	Power (kw)	Discharge particle size (mm)	Output (t/h)	Weight (t)
Specification model	Diameter × length	Effective volume of cylinder (m3)	Ball loading capacity (t)	Cylinder speed (r/min)	Power (kw)	Discharge particle size (mm)	Output (t/h)	Weight (t)
MB0918	φ900×1800		2.3	29	22	2.5-0.2	6-1.6	6.2
MB0924	Φ900×2400		3.1	29	30	2.5-0.2	10-2.9	6.6
MB1224	Φ1200×2400		6.5	27	55	2.5-0.2	13-5	13.5
MB1530	Φ1500×3000	5.0	8	23	75	2.5-0.2	12-5.5	16.71
MB1830	Φ1800×3000	6.5	17	22.8	132	2.5-0.2	20-9.5	29.8
MB2122	Φ2100×2200	6.7	18	20.9	160	2.5-0.2	27-12	42.5
MB2130	Φ2100×3000	9.2	25	20.9	160	2.5-0.2	30-13	43.9
MB2136	Φ2100×3600	11.0	28	20.9	200	2.5-0.2	35-14.8	49.4
MBZ2136	Φ2100×3600	11.0	32.5	20.9	210	-5.0	61.5-43	49.9
MB2140	Φ2100×4000	12.2	31	20.9	220	2.5-0.2	38-17	50.3
MB2145	Φ2100×4500	13.8	35	20.9	250	2.5-0.2	43-19	51.8
MB2430	Φ2400×3000	12.2	31	19	250	2.5-0.2	47-22	56.0
MBZ2430	Φ2400×3000	12.2	31	19	250	-5.0	73-52	58.3
MB2436	Φ2400×3600	14.6	37	19	280	2.5-0.2	55-26	61.0
MBZ2436	Φ2400×3600	14.6	37	19	280	-5.0	84-60	62.4
MB2730	Φ2700×3000	15.3	35	17.5	315	5-0.8	125-37.5	75.6
MB2736	Φ2700×3600	18.4	42	17.5	355	5-0.8	150-45	81.8
MB2740	Φ2700×4000	20.5	47	17.5	400	5-0.8	165-50	84.3
MB3040	Φ3000×4000	25.9	50	16.2	500	5-0.8	206-62	130
MB3245	Φ3200×4500	33	56	15.5	630	5-0.8	228-70	138
MB3248	φ3200×4800	34	60	15.5	710	5-0.8	240-74	142
MB3645	Φ3600×4500	40.8	78	14.5	800	5-0.8	270-83	168
MB3654	Φ3600×5400	50	94	14.5	1000	5-0.8	340-103	192