The Rapidmix Continuous mixing plants have been designed and developed to be a cost effective method for the high capacity production of Concrete or for any application where a cement or binder needs to be mixed into a base material.

The Rapid Mix 600 C has been designed to be totally mobile and completely self-contained with its own power source.

It is also completely self erecting, using the hydraulic system to change the plant from its travel mode into a fully operational plant in minutes. The Rapid Mix 600 C is a continuous mixing system, mixing up to 600 tonnes per hour depending on application. Feed rates are fully adjustable for the aggregate, cement and water systems. The plant is designed for any mixing application where a cement or binder needs to be mixed into a base material. Products such as Roller Compacted Concrete, Cement treated base, Bentonite, Contaminated Soil stabilisation can all be mixed in this machine.

• Construction: Hollow section members fully welded into Lattice design with brackets fitted for attaching hydraulic lifting rams, bin, silo, conveyors, mixer, and all ancillary items which make up the plant.
• Running Gear: Axle type: Standard tri-axle. Suspension: Single leaf steel spring. Brakes: Standard air operated hub brakes with automatic slack adjusters. Wheels: twin wheels on each hub, (4 per axle total 12 tyres) Lights: Rear marker lights, including indicators, brake lights and side markers in accordance with regulations.
• Access: Walkways are provided along the chassis of the machine for maintenance access. The walkways are constructed from q grating material with handrails at appropraite points.
• Aggregate Hopper with Variable Speed belt feeder
• Capacity: 15.6 cu yds (12.0 m3 )
• Loading Width: 14 ft 2½ ins (4330 mm). The hopper can be loaded from either side of the machine.
• Construction: S275 plate with stiffening ribs. Steep sides for difficult materials. (end slopes of 60 degrees).
• Removable Division Plate: The hopper has a removable division plate, allowing two materials to be used.
• Lining: To aid the discharge of the materials the hopper surfaces are fitted the low friction high molecular polyethylene lining material (1/2" (12mm) thickness).
• Adjustable Gates: The outlet end of the hopper is fitted with adjustable level gates to enable the material height on the conveyor belt to be varied. These are adjsusted manually.
• Belt Feeder: A Conveyor belt feeder is fitted on the bottom of the hopper to provide feed from the hopper to the mixer. The conveyor is fitted with a heavy duty geared motor drive with automatic variable speed control and is fitted with adjustable rubber skirts and additional heavy duty support rollers. The belt width is 1200mm (4’) and a heavy duty 3 ply belt is fitted.

• Mixing Action: The twin shafts mix the material, whilst moving the material toward the end of the mixer.
• Paddles: The twin horizontal mixing shafts are fitted with chill cast steel paddles, which are intermeshed in a specially phased relationship to optimise mixing action, whilst maximising throughput.
• Cleaning and Maintenance Access: Special attention has been paid to give the user maximum access for maintenance and cleaning operations. The top of the mixer is fitted with hinged access covers, which when opened give access to all of the mixing chamber. Both sides of the mixing chamber hinge down, to give access, the sides are lowered by hydraulic cylinders.
• Drive: The shafts are driven by 2No 55 kW (75 HP) electric motors through reduction gearboxes with twin gears to synchronise the shafts.
• Mixing Chamber: The mixing chamber is formed by fabricated sloped sides with a troughed conveyor under the mixer forming the bottom of the mixer.
• Water Addition: Water spray bars fitted into the top of the mixer allow the water to be added to the material as it progresses along the mixer.
• Clean-out conveyor: Mounted on the bottom of the mixer, forming the bottom of the mixing chamber, this conveyor allows the bottom of the mixer to be easily cleaned out, when production is finished. This conveyor is used for clean out purposes only. The mixer should be lined with a bed of material every morning before production starts.

• Capacity: 55 US Tons (50 Tonnes) based on material being 1500 kg/m3 (93.64 lbs/ft3).
• Construction: Square silo design constructed from all welded box section S275 plate with stiffening ribs.
• Access to Roof: By folding access ladder with safety cage, to the roof level, which is fitted with double tubular handrail and kicking strip. An access hatch is provided on top of the silo.
• Outlet: Flanged to suit the rotary valve paddle feeder. A shut-off plate is provided to close the silo outlet to allow maintenance to the feeder below.
• Silo Venting: 20m2 Reverse Jet Filter with fan assistance. A pressure relief valve is fitted to protect the silo from over-pressurisation.
• Filling Pipes: 2No 4" (100mm) steel pipe with screwed end for fitting unicone or other type of delivery hose fitting.
• Level Indication: Rotating paddle style level probes for high and low level control.

• Type: 750mm (30") square rotary valve paddle feeder to feed the cement or binder material out of the silo.
• Drive: 2.2 kW (3 HP) geared electric motor with automatic variable speed control.

• Function: Transporting the mixed material from the twinshaft mixer to the truck. The conveyor is designed to handle the maximum feedrate from the mixer. A Gob hopper fitted to the top end of the conveyor allows some mixed material to be "held" for a while, for example whilst the next truck drives under for collection.
• Contruction: Box section S275 steel construction with mounting brackets for rollers and pivot mechanism. The top section of the conveyor incorporates a folding section for transportation.
• Belt: 1000mm (39.4") 3 ply belt with heavy duty top cover and vulcanised joint.
• Drive: Motorised drum with rubber lagging.
• Belt Scraper: Polyurethane blade pre-cleaner scraper mounted on the face of the head drum.
• Belt Scale: A belt scale weigher is fitted to this conveyor to monitor and control the feedrate and hence output of the plant.
• Gob Hopper: Hopper fitted to the top end of the conveyor with pneumatic discharge doors. Constructed from S275 plate.

• Water Tank: A 1750 litre (462 us galls) is fitted complete with ball valve and galvanised steel pipework.
• Pumps: Two positive displacement pumps are fitted to supply 2No water spray bars within the mixer.
• Spray Bars: Each Mixer spray bar has a ball valve to allow addition of water early in the mix, later in the mix or both together. A calibration point for accurate water weighing is also included.

• Compressor: The Rapidmix is equiped with a compressor to provide the air supply for the Gob Hopper doors and the silo filter.
• Valves, Regulator: Solenoid spool valves are fitted for the control of the Gob Hopper doors. A lubricator is provided for the Gob Hopper cylinders. A regulator (with pressure gauge) is provided to adjust the pressure as required.

• The hydraulic system is used to level the machine before erection to the working position and also to erect the silo and out-loading conveyor. Also used for opening mixer sides for maintenance.
• Hydraulic Powerpack: This consists of: Electric motor close coupled to a hydraulic pump unit, Oil reservoir, return line filter, directional valve, filler/ breather, level gauge.
• Control Valves: Lever operated valves for operating the cylinders.
• Hydraulic Cylinders: Double acting type used on: Jacking / Leveling, silo elevation, out-loading fold-out, mixer sides.

Gen-Set
This unit provides electrical power for all machine functions. Diesel powered generating set rated at 281 KVA, 3 phase, 480/277 volts, 60 Hz, 1800 RPM at NTP conditions. Powered by a Iveco, 6 cylinder, turbocharged diesel engine with directly coupled brushless alternator.

• Heavy duty fabricated steel skid type baseframe with anti-vibration mounting pads.
• Electric starting system with heavy duty lead acid type starting batteries and battery charging system.
• High capacity air, fuel and lubricating oil filters.
• Fuel feed and return lines from engine to baseframe fuel tank
• Industrial exhaust silencer system.
• Automatic engine shutdown protection equipment with LED indicator for low oil pressure, high engine temperature, low coolant level, overspeed, and fail to start.
• Set mounted autostart control and instrument cubicle containing voltmeter with phase selection switch, ammeter with phase selection switch. dual scale frequency/ tachometer, water temperature gauge, oil pressure gauge, battery, voltmeter, hours run counter, 3 attempt starting timer, mode selector switch run/off/auto, emergency stop button, lamp test/reset button, terminals for remote start, remote emergency stop and common alarm signal.
• Set mounted circuit breaker cubicle containing suitably rated 3 pole moulded case circuit breaker.
• Instruction manuals and electrical wiring diagrams.

• Operator Control Panel: The operator control panel consists of a series of push buttons and selectors to allow automatic and / or manual control of the following:
  • Mixer
  • Air compressor
  • Out loading conveyor
  • Aggregate conveyor
  • Silo feeder
  • Water pumps
  • Hydraulic power pack
  • Mixer clean out conveyor
  • Silo filter fan unit
  • Internal lighting
  • External lighting
  • Gob hopper doors
  • Auxiliary feeder
  • High silo alarm
  • Low silo alarm
  • Low water alarm
  • Alarm mute button
  • Emergency stop push button
  • Emergency stop reset
  • Panel live indicator
  • Generator start switch
• The operator control panel also houses the following:
  1. Siemen’s OP25 operator interface which allows the operator to store, edit and retrieve up to 30 recipes for the proportioning of different materials
  2. Manual rate meters which display the speed of the in feeds during manual operation.
  3. Mixer amp meter to display the current being consumed during manual or automatic operation of the plant.
  4. A 40 character per line thermal printer
• Starter Panels:
  There are 2 No starter panels, Panel 1 for mixer and Panel 2 for all other starters.
  • Panel No 1 is located behind the mixer and houses the contactors, overload relays, timers and current transformers required to start and run the mixer motor using a star / delta sequence.
  • Panel No 2 is located under the operator control panel and houses all contactors, overload relays, MCB’s, Hitachi A.C. inverters, Siemens S7300 PLC and all other components required to control the plant.

• Dry run at our works.
• Full production at a site close to our works