Engineering systems design

Industrial systems design

The offer of the Grupa Wolff design office comprises complete support in the process of preparing preliminary project assumptions, concepts and complete working designs, both for newly designed engineering systems and for modernisation of the existing ones, also with regard to the ATEX directive.

Engineering systems design
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We will answer questions about: offer, technical specification, delivery, assembly.

Major areas of operation

Design and implementation of screening lines

We provide design, delivery of equipment and execution of screening systems for dusts, powders and granulates. We focus on the screening of difficult materials, with a tendency to stick to the sieve. For plants operating in explosion hazardous areas, we provide solutions in accordance with the requirements of ATEX directives (screening of flammable and explosive products). In the case of plants for the food industry, on the other hand, we use hygienic equipment.

Scope of supply

  • selection of engineering equipment, e.g. crushers, screens etc.
  • support structures for screens, handling platforms
  • charging and discharging chutes
  • mechanical and pneumatic transport systems
  • production materials and ready product storage systems
  • compressed air systems
  • dedusting systems
  • CIA systems for the designed lines
  • visualisation of engineering processes
  • assembly and commissioning
selection of engineering equipment

Design and implementation of milling lines

We design and manufacture complete milling lines for micro and nano scale. Depending on the characteristics of the ground product, we use one of three technologies: dry phase milling, wet phase milling or cryogenic milling (milling at reduced temperature to increase the brittleness of hot, ductile or fibrous materials).

Scope of supply

  • system of product reception, storage and feeding in the mill
  • mill adjusted to the process specifics
  • product screening and return to mill station
  • dedusting system
  • support structures and platforms
  • compressed air systems
  • CIA systems for the designed lines
  • visualisation of engineering processes
  • assembly and commissioning

Types of mills most commonly used in plants

Combined Roller and Bowl Type Mills

Combined roller and bowl type mills

We supply roller and bowl type mills or complete milling lines with a single unit capacity from 2 to 450 t/h. The milling lines include systems for transporting and feeding the product to the mill, weighing system, pneumatic system for receiving the milled product, dedusting and screening plants. The offered solutions are operated in hundreds of industrial plants throughout the world, in particular in the production of cement, clinker, ceramic semi-finished products, kaolin, bentonite, coal, coke, dolomite, talcum, anhydrite, calcite and limestone.

Impact Mills

Impact Mills

Impact mills are the type of mills more frequently applied for milling loose materials. They are fitted for milling a broad variety of products in a large range of the required fineness of grinding. In impact mills, the material is milled through breaking, grinding and crushing on the milling tools of the mill. Impact mills can be equipped with an air classifier enabling a precise determining of grinding fineness of the milled material.

Cryogenic grinding

Cryogenic grinding

We manufacture complete cryogenic grinding lines, enabling efficient production of finer particles by using freezing of ground / milled material with liquid nitrogen or dry ice (solid CO2). Depending on the product properties such as strength, hardness, flexibility/plasticity and the desired particle size, the following grinding and pulverisation principles are applied: breaking, crushing, cutting, abrasion, impact.

Change of use of the existing industrial structures

We provide support at all project stages, starting from obtaining all approvals and formal documents, through preparing a multidisciplinary design and concept documentation, building permit and working design, and ending with design supervision.

Scope of work

  • risk analysis with regard to the planned changes
  • modernisation designs for:
    • dedusting systems,
    • electric systems,
    • CIA systems,
    • air conditioning systems,
    • engineering systems,
    • storage systems,
    • transport systems,
  • modernisation works, assembly and commissioning.

Systems and structures adjustment to ATEX directive requirements

Grupa Wolff specialises in the tasks which support customers in adjusting their plants to the binding explosion safety requirements. That frequently refers to equipment and systems which have operated for many years and which in the light of the currently binding regulations require adjustment to the up-to-date provisions of the ATEX 114 and ATEX 137 directives.

Depending on the customer needs, the work may start from preparing documents required by law, followed by system, structure or design inventory in order to determine deficiencies and irregularities, as well as checking the structural strength of devices, and ending with providing physical protection of systems against explosion.

Preparing of documents required by law

  • explosion risk assessment
  • setting out explosion hazard zones
  • explosion protection document

Inventory taking

  • production lines with regard to technology, construction, mechanics and electric matters
  • equipment with regard to their compliance with the ATEX directive
  • explosion hazard devices with regard to their structural strength
  • accompanying systems, including dedusting, electric, CIA, compressed air, and air conditioning systems
  • system extension design

Implementation of explosion risk reducing solutions

  • explosion suppression
  • explosion venting
  • explosion isolation
  • spark extinguishing
  • electrostatic earthing
  • flammable gases detection
  • flame arresters

1. Air extraction and dedusting systems design
2. Central vacuum cleaner systems design
3. Local air extraction systems design
4. Preparing dedusting equipment working designs
5. Industrial ventilation systems design

Learn more

Click below to enter the page devoted to designing and erection of dedusting, central vacuum cleaner and ventilation systems. The solutions we offer are intended for operation in standard and heavy-duty conditions as well as in explosion hazard zones.

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