Great Wall Vertical Roller Mill in Steel Plant

Vertical roller mill feature:

1. 20-30% power consumption are saved, compared with ball grinding mill

The material is ground in the material layer with low energy consumption. Along with the increasing of the moisture content, the better of the power saving effect is.

2. The noise control conform to” Emission standard for industrial enterprises noise” (GB12348-2008)

It doesn’t work as ball mill, no crash from grinding balls and ball& lining plate. The noise is controlled lower 20-25% db than the ball mill.

3. Small Dust Concentration

As the vertical mill work in the full closed system with negative pressure, there is no raise dust. Very clean and dust emission index can conform to Emission standard of air pollutants for cement industry.

4. Good material drying capacity, finished products moisture can be 0.5-1.0%

The hot wind blows into vertical mill to carry the material. When the feed moisture is too big, we can control the wind’s temperature to make sure the finished products moisture are qualified.

5. Less Product Unit Metal Consumption

Because there are no immediate contact between grinding roller & grinding table, the vertical mills have small erosion and thus extend its machine life and save the product cost.

6. Finished Products Brunauer-Emmett-Teller 4200-4500 cm²/g

As raw meal stays in the vertical mill very soon, it is easy to test and control its particle size and chemical component. The over grinding phenomenon is diminished and product quality are more stable.

7. Vertical mill floor space is 50% of ball mill’s. Save investment cost.

Vertical mill is designed with simple technological process, constructed with small floor spaces, compact allocation and outdoor arrangement, which greatly low down the investment cost. 

Revenue:

1. 3 years for cost recovering

2. Scientific process optimization and control are used to low down the energy consumption

3. Shorten EPC period, save your time-cost.

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Industry Problem

At present, these are common problem exists in the steel plant.

1. The resource of mineral, water, coal comes short and short, which drying up the profit stream

2. Steel slag are abandoned in amount, leads to wasting of resources

3. The open storage steel slag takes much spaces and seriously polluted the environment.

Chinese government has already regarded the solid waste comprehensive utilization as a long-term strategy for the economic and social development. National energy conservation and integrated use of natural resources strategy in “China Tenth Five-year Plan” and “China Eleventh Five-year Plan“ , proposed the target of realize the industry residue ‘s multipurpose utilization rate to promote the economy, resources, environment develop in a balanced way.

Under the new circumstances, there are new demanding from steel industry as follows.

1. Optimize the process, save the natural resource, reasonable exploitations and utilization of the renewable resource.

2. Improve the resources utilization rate and turn waste into wealth.

3. Improve the process techniques and equipment, decrease the dust pollution.