BG Europa supply Tarmac Eaton Hall with new Aggregate Drying Facility

  • News
  • BG Europa supply Tarmac Eaton Hall with new Aggregate Drying Facility

11th September 2007 - BG Europa of Wickhambrook has recently been involved in a project at Eaton Hall Quarry, near Congleton, Cheshire.

Eaton Hall Quarry owned and operated by Tarmac Aggregate Products supplies sand to the Trupak Bagged Aggregate business, which now has one of its 18 bagging plants located within the Eaton Hall site, to supply dry mixed cementitious products to the DIY and Builders Merchant market.

Annual output from the Trupak site is approximately 50,000 tonnes/annum with the product sold and distributed in 15-25kg plastic bags to its customers across the UK.

Having recently made the decision to upgrade the site Trupak has installed a new bagging plant which was supplied and installed by the main project contractor GT Project Engineering of Consett. As part of the material handling equipment within the project BG Europa supplied a SD1.5 Drying Drum to Enviroflo Engineering of Wolverhampton.

BG Europa are industry specialists who utilize their in-house engineering expertise to bespoke all equipment to exactly match customers' requirements.

Their SD1.5 is a parallel flow drum which is designed primarily for low temperature drying. Widely used within the sand, slag and mineral drying industries in the UK and Europe the parallel flow design ensures the material discharge temperature is close to that of the exhaust gases, achieving material temperatures of just above dew point.

To facilitate aggregate drying before delivery to the bagging plant BG Europa  supplied a 1.5m dia x 9.0m long dryer specified to dry 14-6mm aggregate blend with 1.2-2.6% moisture removal and 5-1mm aggregate blend with 5.3% moisture removal at 45tph and also top dressing at 30tph with 8% moisture removal.

This specification calculated an energy requirement for 8% moisture removal at 30tph at 8.2 MBtu/Hr and 3.6 MBtu/Hr for 1.2 % moisture removal at 45tph material discharge temperature was set at between 85-100°C

To achieve this capacity with the flexibility in output required BG Europa also supplied an American Hauck Starjet SJ075 Burner rated at a maximum 12.1 MBtu/Hr with a 7:1 turndown.This was supplied with heat shield, oil control valves, modulating control motor with externally high/low fire limit switches and oil line shut off solenoid valves, oil filtering and pressure regulating equipment.

The burner control was supplied to control the dried material to a predetermined discharge temperature via a Land RT80A. To complete the specification an electrical control panel was also supplied to IP65 standard

A burner maintenance platform to one side of the drum chassis fitted with handrails and access stairway completed the specification.

Mounted on a heavy steel base frame the drum is supported to allow a discharge height of 1m.Trunnion rings are fitted to the drum shell allowing for drum expansion. Fully supported by four roller support stools the Barber Greene design ensures that the trunnion roller assemblies have full face contact with the trunnion rings at all times. Internal taper roller bearings lock all thrust forces into the roller assembly. In comparison to a plummer block bearing the superior BG design ensures that the forces exerted by the tracking of the drum are not transferred to the inner race of the support bearings eliminating any movement on the shaft.

An exhaust stack base and knock out box complete with lined discharge chute was also supplied by BG Europa to feed a BG hot elevator (supplied under separate contract to GTPE). Designed to handle 14-6mm and 5-1mm aggregate blend at 55tph and top dressing at 35tph the elevator features bolt-on removable panels to the rear of the head and tail sections allowing access to the head and tail sprockets.

Fabricated in mild steel each individual bucket features a flat bar reinforced lip on the front providing extra wear and stiffness. Elevator drive was supplied by motor with a belt drive to a torque arm shaft mounted reducer complete with back-stop.

The elevator was also supplied with secondary inlet chute to accept bag filter dust, and discharge chute with removable covers allowing access to ABRO wear resistant steel liners.

Cliff Ogden - Trupack Director, commented, "The drier was installed on time and is now fully operational supplying dried aggregates to match our customers demand for bagged Cementitious products. We are very pleased with both the installation project and the current performance of the equipment"