Description of SCM ultrafine grinding mill

SBM SCM series ultrafine mill (grinding mill) is on the bases of our company’s production experience for more than 15 years. We absorb technology advantages from the same field abroad and home. We organize elite powder processing experts to investigate, research and try on 12 kinds of mills and horizontal hammer crushers. And finally we developed this high-efficiency and low-cost super thin mill.

SCM series ultrafine grinding mill is a grinding machine which produces thin powder and ultra fine powder. SCM Series ultrafine mill is mainly applied to the powder processing of mineral products in industries of metallurgy, construction, chemistry, Fertilizer and mining etc.
SCM ultrafine grinding mill can produce powder from non-flammable and non-explosive mineral materials with Mohs hardness below 9 and humidity below 8%, such as barite, limestone, quartz, calcite, granite, porcelain clay, basalt, gypsum ,calcite, chalk, limestone, dolomite, kaolin, bentonite, talcum, talc, magnesite, illite, pyrophyllite, vermiculite, sepiolite, attapulgite, rectorite, diatomite, barite, gypsum, alum earth, graphite, fluorite, variscite, potash ore, floatstone.

• High efficiency:
  Under the same condition of finished particle size and power of motor, the output is 40% higher than airflow mill and whisk mill.
• Environmental protection:
  Pollution and noise are lightened by using deduster and muffler so as to reach the requirement of national environmental protection.
• High safety:
  No axle tree or bolt is used in the grinding chamber, so there will be no worn out problem of bearing and sealing parts, and also no loose of bolts.
• High using rate of spare parts:
  Under same condition of material and finished particle size, the lifetime of the spare parts is longer than that of impact crusher and turbine crusher
• Finished size can reach to d97≤5μm.

• Prior to installation of the equipment, all the people who will be assigned to operate the equipment have to be technically trained to know the principle and rules of operation. Someone should be specially selected and put in charge of the operation.
• To ensure normal operation of the equipment, a manual containing strict rules and procedures for its operation, maintenance and repair should be well prepared and followed. Tools, replacement parts for maintaining, repairing and lubricating oil and grease must be available for immediate use.
• After a period of usage, the equipment should be checked, to replace worn-and-torn parts such as rollers, rings and shovels. Be sure to fasten connecting-bolts, nut collars to fix rollers properly. Be sure to lubricate the parts sufficiently.
• To check and wash bearings in them and replace broken ones, and then fill enough oil and grease (with oil-pump or grease-gun).
• Roller should be replaced after 500-hours use.

The whole system of the super thin grinding mill consists of main unit, deceleration machine, classifier, blower, hammer crusher, dustpan elevator, electro-magnetic vibrating feeder, impulse dust cleaner, piping device, cyclone collector device, classifier, high-pressure motor and muffler.

The main motor drives main axle and every layer rotating by the power of reducer. Dial drives numbers of rollers rolling and rotating in the ring by pintles. Big materials are crushed into small particles by hammer crusher. Then they are sent to store house by elevator. Vibrating feeder send the materials evenly to the middle of the upper dial. Under the function of the eccentricity, the materials fall into the ring to be pressed, crushed and milled into pieces by rollers. After the first crush, materials fall into the second and third layer. The pumping of the high-pressure centrifugal blower put the outside air into the machine. The coarse powder will be brought into the classifier.
The rotating turbine in the collector makes the coarse particles fall back for regrinding. The fine particles will come into the cyclone collector with the airflow and discharged by the discharging valve on the bottom of the collector. They are the final products. The airflow with little dust will be discharged through blower and muffler after being purified by the cyclone collector.

[ SCM series ultrafine mill technical data]

Model	SCM6015	SCM8021	SCM10027
Roller Number	15	21	27
Diameter (mm)	Φ600	Φ800	Φ1000
Ring Number	2	2	2
Main Unit Speed(mm)	235	235	235
Max. Feeding Size(mm)	10	10	10
Final Size (mesh)	325-2500	325-2500	325-2500
Capacity (kg/h)	350-2500	600-4000	900-6000
Overall dimension (m)	10×2×5.5	12.4×2.5×5.8	14.5×3.8×6.3

Name		Unit	Specification and technical data
			SCM6015	SCM8021	SCM10027
Motor of Main Unit	Model		Y250-4	Y250-4	Y250-4
	Power	Kw	37	55	90
Adjustable Motor of Classifier	Model		Y180M-4	Y180M-4	Y2VP200L_4
	Power	Kw	11	18.5	30
Motor of Elevator	Model		Y100L-4	Y100L-4	Y100L_4B3
	Power	Kw	3	3	3
Motor of Blower	Model		Y225M-2	Y225M-2	Y2_280M_2
	Power	Kw	30	45	90
Hammer Crusher	Model		250-400	250-400	250-400
	Power	Kw	5.5	5.5	5.5
Vibrating Feeder	Model		GZ1F	GZ1F	GZ1F
	Power	Kw	0.06	0.06	0.15
Unload Valve	Model		ZJD-1:40	ZJD-1:40	ZJD Y802-4
	Power	Kw	0.75	0.75	3
Impulse Dust Cleaner	Model		BMC72-11	BMC72-11	BMC72-11
	Power	Kw	3	3	3