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1.ISO9001:2008, 2.professional manufacture with 50years, 3.durable liner,whole life service,discharging evenly, 4.customized - details see: https://www.machineto.com/energy-saving-mbs-y-2236-rod-mill-with-iso-bv-and-reasonable-price-10314479

What Is Rod Mill?

Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6. Rod mills accept feed up to about 50 mm (2 in.) and produce a product in the size range of 3000 to 270 mm (–4 to –35 mesh). Grinding action is by line contact between the rods extending the length of the mill. Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers. This results in preferential grinding of coarse material and minimizes production of slimes

Working Principle of Rod Mill

Rod mills normally carry 35 to 65% rod charge by volume. The limits on charge level are (1) keeping the feed end trunnion open so that feed will get into the mill, and (2) keeping the rod charge low so rods will not work their way into discharge openings where they can cause rod tangling.

Operation of Rod Mill:

The operation speed of rod mills is generally determined by the Peripheral Speed of the Inside of the mill. Generally, rod mills operate between 280 feet per minute and 480 feet per minute at the periphery of the mill.

Types:

Of the two main types of rod mill, wet grinding rod mills are normally used in the mineral processing industry. Dry grinding is used in some areas; however, it is confronted with problems and should be avoided except where absolutely necessary. Rod mills operate at lower speed than ball mills since the rods are rolled and not cascaded. For an equivalent grind, a rod mill uses less steel than a ball mill because of the lower speed and better contact between the media and ore. The rod charge must be maintained in good working condition, and broken and worn rods must be removed. Rod mills usually require greater operator attention. It is important that the rods stay essentially parallel to one another. If rods become misaligned, grinding action is lost and, more importantly, rod tangles occur. Maximum rod length is limited to about 6.1 m (20 ft). This in turn limits the length, diameter, and capacity of rod mills. The heavier rods acting upon the lifters and liners result in greater wear on the mill liners.

Application:

Rod mill is widely applied in metal and nonmetal mine, chemical, metallurgy, water conservancy, glass and construction materials industries, mainly suitable for grinding various ores and rocks and artificial sand-making. Our high-efficiency rod mill adopts rolling bearing support instead of sliding bearing support with bearing bush. Therefore, it has advantages of even discharging size and high capacity.

Technical parameters

Model	Diameter of cylinder(mm)	Length of cylinder(mm)	Effective volume(m3)	Max. rod loading(t)	Speed(r/min)	Capacity(t/h)	Discharging size(mm)	Main motor(kw)
MBS(Y)-1530	1500	3000	4.5	8	27	15-6	2.0-0.15	90
MBS(Y)-1830	1830	3000	6.7	14	23.7	20-9	2.0-0.15	155
MBS(Y)- 1832	1830	3200	7.2	15	23.7	22-10	2.0-0.15	155-180
MBS(Y)- 2130	2100	3000	8.8	18	21.4	30-12	2.0-0.15	210
MBS(Y)- 2132	2100	3200	9.6	20	21.4	32-12.8	2.0-0.15	210
MBS(Y)- 2136	2100	3600	11	23	21.4	35-14	2.0-0.15	245
MBS(Y)- 2230	2200	3000	10	21	19	34-13	2.0-0.15	245
MBS(Y)- 2236	2200	3600	12	25	19	40-16	2.0-0.15	245
MBS(Y)- 2430	2400	3000	12	25	19	40-17	2.0-0.15	280
MBS(Y)- 2436	2400	3600	14	29	19	47-19	2.0-0.15	320
MBS(Y)- 2730	2700	3000	15.5	32.5	18.4	55-21	2.0-0.15	355
MBS(Y)- 2736	2700	3600	18	38	18.4	65-24	2.0-0.15	400
MBS(Y)- 2740	2700	4000	20.6	43	18.4	80-28	2.0-0.15	480
MBS(Y)- 3040	3000	4000	25.7	54	17	90-34	2.0-0.15	630
MBS(Y)- 3230	3200	3000	21	44	16.4	73-28	2.0-0.15	500
MBS(Y)- 3245	3200	4500	32	67	16.4	120-44	2.0-0.15	800
MBS(Y)- 3642	3600	4200	38	79.5	15.8	120-50	2.0-0.15	1000
MBS(Y)- 3645	3600	4500	40.8	85	15.8	140-56	2.0-0.15	1000-1250
MBS(Y)- 3660	3600	6000	54	113	15.8	190-80	2.0-0.15	1400

pictures for reference:

manufactuing process: