Crushing Processing Plant Produces Rubble Recycling Material

Customer:

Gebr Schneider AG, Meilen

Recycling plantVolketswil,Switzerland

Plant Description

The raw material is first of all conveyed by means of a rugged, lowmaintenance apron feeder in a continuous flow to the prescreening section where a doubledecker eccentric screen with a particularly high screening efficiency is in operation The material is screened off at 0 – 8 mm, and this fraction can be conveyed to a temporary storage hopper or reunited with the product downstream of the crusher similar to the 8 – 40 mm  fraction, which also bypasses the crusherThe oversize from the prescreening section then passes to the crusher, the latest version of  Impactor Type APPH 1315 Q, which is characterised by its efficiency, minimum maintenance requirement and its ability to generate a product of consistently high quality

The rubble recycling plant operated by the Swiss company Gebr Schneider AG in Volketswil comprises a crushing section with two prescreening units, as well as three classifiers with light fraction separation, so that the products generated are of particularly high quality The process flow sheet is shown on the back page of this job report

The downstream vibro chute transfers the crushed material 0 – 40 (x) mm onto a belt conveyor, at the head of which is located an overbelt magnet which separates all ferrous inclusions For optimum effect, the magnet separator is arranged in the direction of conveyance

For the production of the individual granulometries, there are two doubledecker screens operating in conjunction with impact separators, also known as screening classifiers The screen overflow material is passed to the impact separators, in which any light material is caught by a flow of air and transported onto a rotating drum, which in turn directs it onto a belt conveyor The heavier inert material, such as concrete or stones, strikes the drum and is deflectted onto another belt conveyor The parameters can be varied according to the characteristics and composition of the feed material

The three impact separators remove light materials, such as paper, polystyrene and wood, etc from the fractions >63 mm, 32 – 63 mm and 16/32 mm The cleaned oversize >63 mm is returned to the impactor

The various products are conveyed via belt conveyor to a number of storage compartments (20,000 mm³ storage capacity) The product discharge into the compartments is effected by automated moveable belt (material drop height to floor level is 14 m)

As already stated, the plant is characterised by a high degree of flexibility, and product generation can be varied accordingly to meet changed demands Thanks to the plant control system with visual display, easy and flexible monitoring and control is possible via computer direct from the main control desk A total of 27 belt conveyors with an overall length of 404 m are installed in the plant

Products

Granulometries: 0 – 4 mm, 0 – 8 mm

0/4/8– 16 mm, 0/4/8 – 32 mm, 0/4/8 – 63 mm

of which are cleaned: > 63 mm

32 – 63 mm

16 – 32 mm

Tramp metal: clean ferrous

Light fraction: products from the 3 impact separators (paper, cardboard,

plastic, wood, etc

Technical Data, Crushing Plant

Feed material: Rubble, concrete with and without rebars,

broken road paving

Feed size: 0 – 800 x 800 x 600 mm edge lenght

or slabs 2000 x 1000 x 500 mm edge lenght

Capacity: up to 350 tons/h depending on feed material

Prescreening: eccentric screen units, separation at 40  mm and 8 mm

Crusher:  Impactor type APPH 1315Q

Inlet 1,100 mm high x 1,520 mm wide

Installed power rating 200 kW

Crusher product:  <63 mm

Screening: twostage screening with doubledecker screens,

separation at 63/32 mm and 16/8(4) mm

Classifying: 3 impact separators, two of which are screening classi

fiers

Material transport: 27 belt conveyors (galvanised), 404 m overall length

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