Coal Vertical Roller Mill (VRM) for Grinding Stone

• Type: Ball Mill
• Motor Type: AC Motor
• Motor Power: 55-710
• Rotationl Speed: 21-23r/min
• Application: Construction
• Materials: Ore
• Model NO.: ZKRM08.2
• Condition: New
• Transport Package: Packing in Standard Containers or Meet Your Demand
• Specification: ISO9001, ISO14000, CE
• Trademark: zhengkuang
• Origin: Henan, China (Mainland)
• HS Code: 8417
• Production Capacity: 15-25t/H

Product Description

Production introduction

Coal Vertical Roller Mill (VRM) is an air swept, medium-speed, vertical pulverizer with integral classifier. It pulverizes coal by applying hydraulically-loaded grinding pressure through three grinding roller onto a rotating bed of coal. Grinding pressure can be adjusted to account for variations in coal grindability and desired product fineness. 

Vertical roller mill can replace ball mills or tube mills used for preparing coal. Today VRMs with capacities up to 50 tph are the dominant technology for coal grinding. Grinding media wear in a VRM will only be 5 to 10 g/ton of coal powder, as compared to 100 g/ton of coal powder in a ball mill.

Application

calcite, chalk, limestone, dolomite, kaolin, bentonite, talc, mica, magnesite, illite, pyrophyllite and vermiculite, sepiolite, attapulgite, rectorite, diatomite, barite, gypsum, alunite, graphite, fluorite, rock phosphate, Kalium ore, pumice, etc., totally more than 100 kinds of materials.

  

Features and Advantages

1. VRM can handle materials with sizes greater than 85mm                                   

2. VRM mill can remove more than 20% moisture                

3. Vertical roller mills plants use less space                                          

4. Grinding plants VR mills have lower specific energy consumption (15-40%)                             

5. VRM are more flexible, the capacity can easily be varied from 40 to 100% of the nominal capacity

6. Lower noise level for VRM grinding plants       

 
Technology Specifications: 
 

Model	Grinding plate(mm)		output(t/h)			output(×10kt/a)			Main motor power(kW)
	diameter	Pitch	blast furnace slag	cement	Raw meal	blast furnace slag	cement	Raw meal
ZKRM08.2	1200	800	1.5~2	3~4	6~8	1.5	3	5.5	55
ZKRM11.2	1500	1100	3~4	5~6	10~12	3	4.5	9	110
ZKRM13.2	1700	1300	8~9	11~13	20~22	6	9.5	17	185
ZKRM15.2	1900	1500	9~10	14~16	26~34	8	12	24	250
ZKRM17.2	2100	1700	12~14	20~23	40~50	10	17	36	355
ZKRM19.2	2300	1900	15~17	24~26	50~60	13	20	43.5	450
ZKRM20.2	2400	2000	18~20	27~30	60~75	15	22.5	55	560
ZKRM22.3	2600	2200	23~25	40~50	85~110	20	35.5	77	710

Working Principle

When it works, raw materials are fed in evenly by the feeder at the bottom of the hopper, then lifted to appropriate height by the bucket elevator, then sent into the mill through feeding pipe to be grinded , the grinded materials are brought into the powder classifier by the hot air generated by the hot air stove, at the same time, the materials are dried and classified , the unqualified materials fall down to be regrind, qualified fine powders are sent into powder collector , and then transported to the storage by the conveyor.




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Our service:

Training & Service

Pre-sale services: enthusiasm
We provide you with the prophase plan, process flow design and manufacturer equipment,
according to your special demand.

Sale services: servant
Send technicians to the jobsite for guiding the installation and adjustment, training operators 
and finishing the check and accept together with you.



After-sale services: faithfulness
To establish long term friendship, we will regularly pay return visit to customers.
In addition, we provide one-year warrantee to make sure your machine runs consistently. We always keep certain inventory?level of spare parts, which means the replacements can be shipped to you right away.

Welcome to visit our company and workshop, we sincerely look forward to cooperating with 
you. We will provide you with the most suitable products with the reasonable price.