Application in demanding material

Scalper MOBISCREEN MSS 802i EVO in Bulgaria

MOBISCREEN MSS 802i EVO deployed in Eastern Europe

Powerful Kleemann screening plant proves it flexibility in Bulgaria

The versatile scalper MOBISCREEN MSS 802i EVO is in operation in Varna, Bulgaria. Here, in spite of the demanding material and changing tasks, it performs excellently.

Patishta i Mostove is one of the major players in this Balkan country: The company carries out infrastructure projects such as road or bridge construction. Its portfolio also includes earth moving of all types, housing construction and recycling. Patishta i Mostove has three quarries of its own; in a further three quarries the company is present as an operator.

Wide range – flexibility is in demand

Thanks to the extremely diverse range of tasks, the company must be prepared for completely different challenges. “We need reliable machines and partners for our daily work”, explains Rosen Koleliev, owner and Managing Director of Patishta i Mostove. One of the reasons why the company decided on the MOBISCREEN MSS 802i EVO. The powerful mobile screening plant was specially designed to meet changing requirements in different application areas.

Portrait of a man

“We need reliable machines and partners for our daily work”.

Rosen Koleliev, owner and Managing Director of Patishta i Mostove.

Clay with a sticky share

Limestone with a high clay content is extracted in the quarry where the mobile scalper is currently being used. The task is the screening of clean stone for pre-crushing in a stationary jaw crushing plant. Separating the sticky content of fines is challenging.

To obtain clean limestone, the sticky content of fines in the clay share must first be separated.

High output impresses

One of the highlights of the plant is the simple and fast conversion from 3- to 2-way grit. Either two or three final grain sizes can thus be produced and discharged. “In our company, the plant is used on 2-way grit with an amazing output of 375 tons an hour. The real aim was to allow the grit to run directly onto the lorry in order to save wheel loader costs. The productivity of the plant, however, is a lot higher than we expected“, explains Svetoslav Stoykov, machine operator. The high productivity makes direct loading on the lorry more difficult because, during the lorry change, the material stockpile becomes high too quickly. “However, we still need the wheel loaders. The bottom line, of course, is that the result is very good.“

Man standing in front of a Kleemann plant in the quarry

“The productivity of the plant is a lot higher than we expected.“

Svetoslav Stoykov, machine operator

Flexibility pays off

The flexibility of the MOBISCREEN MSS 802i EVO offers advantages that pay off for the company:

  • With its proportionally controlled running gear, the plant can be moved quickly and precisely.
  • Set-up times are short, partly because folding of the side discharger conveyors is carried out without any problems.
  • The hopper rear wall can be folded at three heights, which also contributes to easy handling.
  • The large offer of screen surfaces and simple adjustment of the screen parameters, which make rapid adaptation of the MSS 802i EVO to a very wide range of feed materials possible.

All of this reduces set-up times and thus personnel requirements and costs.

Good characteristics in difficult material

The adjustment options for the screen casing angle with a large setting range are also very helpful. It can be adjusted variably from 15.4 to 20 degrees and the screen casing can thus be set over 20 percent steeping than many other scalpers on the market. Productivity is also very high with a small angle of the screen casing and the cleaning effect is satisfactory even with high humidity levels.

Tolles Produkt

Completely satisfied with equipment and service

“We installed material brakes as additional equipment. They work excellently. They decelerate large boulders very efficiently and protect the machine against damage and excessive wear”, says Rosen Koleliev, who is overall very impressed with the design of the plant. “My people enjoy working with the machine. All components are clearly laid out and very easily accessible. It’s easy to see that Kleemann has also closely considered safety and user-friendliness.“

Outstanding Support

In general, the company is very satisfied with the co-operation with Kleemann: “On the one hand, we have the top productivity and, on the other hand, a noticeable reduction in operating costs. Added to this is also the tremendous Support. Wirtgen Bulgaria really supported us when we were making the decision and provided excellent advice. And we know that even today during operation we always have a reliable contact partner.“

Data and facts about the quarry
Feed material:
Limestone with a clay share
Feed size:
0-375 mm
Large final products:
0-20 mm
375 t/h
Fuel consumption:
9 l/h

Scalper MOBISCREEN MSS 802i EVO in Bulgaria