Primary Crushing Plant with Impactor in Bosnia Herzegovina

Customer: Tvornica Cementa Kakanj DD Kakanj Bosnia Herzegovina

Plant Description

At the beginning of 2006, a new primary crushing plant was installed at the works of cement producer Tvornica Cementa Kakanj DD Kakjanj in Bosnia Herzegovina, supplied and commissioned by  & EPR GmbH In this cement works, which is member of the Heidelberg Cement Group, limestone from three different quarries is processed to produce two different mixes The new equipment was supplied for integration into parts of the existing plant

The raw material to be processed is characterised by a relatively high abrasion factor In order to minimise the abrasive effects of the material on the wear parts of the crusher, the fine fraction, in which most of the abrasive material is to be found, is removed from the main material flow by a  prescreening roller grate (wobbler) installed upstream of the crusher The working surface of the wobbler consists of a series of rotating shafts spaced at defined intervals which allow the fine fraction to pass through the gaps between the shafts for onward conveyance, to be reunited with the main material flow downstream of the crusher

Spaced at intervals over the length of the shafts and sized according to the desired cutoff particle size are deltashaped discs, which also further the conveying process and prevent material clogging In this particular case, the desired particle size separation point is 50 mm The drive is effected by a central shaft, from which the power is then distributed to the individual shafts Each shaft is connected to its neighbour by roller chain, thereby achieving smooth and synchronised shaft rotation The chains run in an oil bath in a separate chain casing In order to minimise the risk of possible material caking, rugged scrapers are fitted underneath the shafts The side walls are lined with replaceable wear plates

The crusher selected for this particular application is a  impactor Type APPMH 1618 The crusher is equipped with a grinding path to restrict the amount of oversize Impact apron and grinding path settings can be adjusted hydraulically During operation, the hydraulics retain the impact aprons in their preset positions On entry into the crusher of any large lumps of tramp metal or noncrushables, the aprons retract in a controlled manner, allowing the tramp metal, etc to pass through, and then return immediately to their original preset position In this way, damage to the crusher internals is minimised and at the same time the percentage of oversize is limited The crusher is distinguished by its high degree of operational safety and a consistently high product quality An important factor in the product reliability is the rugged GSKtype rotor, a combined welded/cast construction

The whole plant was commissioned punctually in the Spring of 2006, during which operation the contractually specified targets relating to output and product granulometry were not only met but significantly exceeded (see following design and operating data)

Target Design Data:

Feed material: Various limestone mixes

Feed rate: 450 t/h

Feed size to wobbler: 0 – 800 mm (1,000 mm)

Prescreening by wobbler: 50 mm

Feed to impactor: 50 – 800 mm (1,000 mm)

Impactor product: at least 80 % < 50 mm

Spec energy consumption: 12 kWh/t

Actual Operating Data:

Plant capacity: average feed rate 500 t/h

Product granulometry: 80 % < 35 mm

Power consumption: 07 kWh/t

Contact us if you need more details on Elevator. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Lift、Primary Crushing Plant with Impactor in Bosnia Herzegovina. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Primary Crushing Plant