The structure of overflow type is basically the same with the grate one, only with no material discharging grate in the cylinder outlet end. Besides, it has reverse screw blade on the surface of the hollow shaft inner liner cover. Overflow type can return the small ball in the slurry and overflowed rough ore back to the mill. As the grinded material get flowed freely from the hollow shaft neck, the slurry level must be higher than the lowest mother line level of the discharging shaft neck. Therefore, it is called high surface slurry mill sometimes. It is of simple structure and easy to maintain. And as it has fine product, it is usually used in grinding the fine ore, that is the size less than 0.2mm or the second segment in the two continuous stages

• Simple Structure
• High Fineness
• Less Ball Loading

Model	Cylinder rotary speed(r/min)	Loading ball weight(t)	Input size(mm)	Discharge size(mm)	Capacity(t/h)	Motor power (kw)	Weight (t)
Ф900×1800	39	1.5	≤20	0.075-0.89	0.8-2	18.5	4.6
Ф900×3000	39	2.7	≤20	0.075-0.89	1-4	22	5.6
Ф1200×3000	36	3.5	≤25	0.074-0.4	1.6-5	37	12.8
Ф1200×4500	32	5	≤25	0.074-0.4	1.6-5.8	55	13.8
Ф1500×3000	27	7.5	≤25	0.074-0.4	2-5	75	15.6
Ф1500×5700	28	12	≤25	0.074-0.4	3.5-6	130	24.7
Ф1830×3000	25	11	≤25	0.074-0.4	4-10	130	28
Ф1830×6400	24	21	≤25	0.074-0.4	7-16	210	34
Ф1830×7000	24	23	≤25	0.074-0.4	8-18	245	36
Ф2100×3600	23	19	≤25	0.074-0.4	10-36	210	46
Ф2200×4500	21	27	≤25	0.074-0.4	12-23	280	48.5
Ф2200×6500	21	35	≤25	0.074-0.4	14-26	380	52.8
Ф2200×7000	21	35	≤25	0.074-0.4	15-28	380	54
Ф2200×7500	21	35	≤25	0.074-0.4	15-30	380	56
Ф2400×4500	21	30	≤25	0.074-0.4	18-45	320	65
Ф2400×8000	20	36	≤25	0.074-0.4	20-48	410	81
Ф2700×3600	21	39	≤25	0.074-0.4	19-75	400	83
Ф2700×4000	20	40	≤25	0.074-0.4	20-78	400	85
Ф2700×4500	20	48	≤25	0.074-0.4	22-85	430	89
Ф3200×4500	18	65	≤25	0.074-0.4	29-140	800	137
Ф3200×5400	18	81.6	≤25	0.074-0.4	30-180	800-1000	146
Ф3600×4500	17	88	≤25	0.074-0.4	35-210	1000	190
Ф3600×6000	17	117	≤25	0.074-0.4	38-240	1250-1500	220
Ф3600×8500	17	144	≤25	0.074-0.4	45-260	1800	260