• You are here:
• Concrete
•  / PRODUCTS
•  / Mezcladores

SIMEM MDC Continuous Flow Mixer adopts the twin shaft technology and is especially designed for Zero Slump Concrete and Roller Compacted Concrete(RCC). However, with special versions they have proven very useful for pumpable slurries, mine backfill and in applications for treatment of industrial solid waste. The MDC are offered in two main models, MDC200 and the MDC500. Both models
can be delivered with different options, for instance mining, side overflow discharge, extended tank, tank in stainless steel and special solutions for water and material introduction.

The SIMEM MDC mixing tank is completely protected with special anti-wear liners. The mixing action is performed by cast iron paddles, which are hydro-dynamically designed to reduce wear and provide optimized mixing results.
All paddles are bolted onto the mixing arms, which are in turn bolted onto the mixing shaft for easier service and maintenance.
The special design of the mixing arms allows them to be installed in different configurations to create a flow of materials inside the mixing tank, this ensures an optimal mixing result.

AUTOMATIC GREASING SYSTEM

The Automatic Greasing System is an option for the MDC mixers and includes a grease pump that gives a pressure of up to 200 bar, a line strainer and a divider block to ensure the correct amount of grease is pumped into each of the four seals. Concrete seals are installed on the mixing shafts, and connected to the main automatic greasing unit. All four shaft seals are continuously greased by the self-lubricating system, which comes as an option on all models. The self-lubricating system provides a positive flow of grease to the seals ensuring that grout does not pass into the seals. The grease pump on the self-lubricating system is mechanically driven by the mixing shafts. The grease tank has a capacity of four Kg., and includes a limit-switch level indicator.

 MATERIAL DISCHARGER

The MDC mixers are standard equipped with a bottom discharge opening for continuous flow of material. The MDC can also be delivered in a special version with side overflow discharge, which is equipped with pneumatic or hydraulic driven gates. This version allows for continuous production with an extended mixing time, which has been adopted in mining applications for production of pumpable slurries, and has been proven to be extremely useful in this regard.

MIXER MIND® ELECTRONIC CHECK SYSTEM

The Mixer Mind electronic check system is a complete surveillance unit designed to monitor temperatures and power consumption. In addition, it ensures that the automatic greasing system is working correctly. In the case of abnormalities, it provides alarms which serve to avoid damage to the mixer and its components. The Mixer Mind also provides useful service reminders.

AUTOMATIC HIGH PRESSURE WASH DOWN SYSTEM

To reduce operating costs and time, SIMEM offers a high pressure wash down system. This system consists of two special rotating tubes running the full length of each side of the mixer, equipped with special nozzles divided into two or four washing zones. Water is fed via a triplex high pressure pump delivering 60 lt. of water per minute at 200 bar. The automatic wash down system can be started at the end of every shift for a complete washout of the mixer. Alternatively, where concrete
production is intermittent, a rinse can be provided between productions. A high pressure wand is also included for final cleanout through the inspection doors.

PLANETARY GEAR BOXES

SIMEM MDC mixers are not only designed for maximum productivity, but also for long term reliability of service. Driven by electric motors, the twin stage planetary gear boxes, rated at 94% efficiency, are connected to the main shafts with articulated joints, which virtually eliminate the transmission of any possible force from the mixing shafts to the reducer output shafts. Bearings for the mixing shafts are installed on separate flanges and isolated from the concrete seals, protecting the bearings in case of seal failure.

SPECIAL VERSIONS

The MDC series of continuous mixers is designed,mainly, for Zero Slump Concrete and Roller Compacted Concrete (RCC), however with several special designs, these mixers have proven useful in other applications as well. The SIMEM MDC mixers can be supplied in extended versions for increased mixing time. A special version with overflow discharge can also be supplied for mixing of cement based slurries. For operation in corrosive environments, a version with a stainless steel tank can be delivered, as well as a wide variety of charging solutions for water. The MDC mixers are used in a variety of projects around the world, including the building of dams, roads and backfilling of mines.