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ALTERNATIVES are fast emerging in the mining industry to traditional drilling and blasting methods used to loosen and dislodge rocks in surface and underground operations. One of these is SIMEX twin header rotary cutter. 

The Italian-made SIMEX twin header rotary cutters, also known as rock grinders as this aptly describes their use in dislodging and extracting material in quarries and mines, have many advantages over traditional drill and blast methods.

In situations where the cost of drilling and blasting is prohibitive, relative to the amount of material extracted, noise emissions and shock waves at close quarters are an issue or the use of the two-stage traditional mining process is limited by terrain and topography, weather conditions, or safety considerations in the case of restrictive and difficult to access areas, SIMEX Twin header offers a solution.

SIMEX Twin Header has many in-built safety features and noise emissions from the rotary cutter are relatively low when compared to other mechanical mining machines and other methods of extraction. In addition, a rotary cutter is suitable for removing smaller quantities of material left behind by traditional mining methods.

SIMEX Twin Header can operate in all weather conditions and when vibration and shock waves from a blast is not acceptable and can also be used under water.

Significant time savings are possible with the SIMEX twin header due fast set-up and removal from job to job. The SIMEX twin header can be quickly deployed, even in difficult to reach mining locations and can be put to work in underground mining areas with tunnels, and in highwall mining in surface or open-cut mining.

A twin-headed rotary cutting machine is usually transported using a carrier machine, allowing the equipment to be easily moved around mine sites to different working areas.

The twin header rotary cutter uses special patented technology, with high torque that can bore through the toughest of material and has several other impressive technical features worth mentioning.

Another market-leading feature of the SIMEX twin header rotary cutter is that its hydraulic system is fitted with accumulators that act to protect the unit from hydraulic pressures while the unit is in operation.

Maximum cutting force for the rotary cutting machine varies from 13.5 to 114.5KN, depending on the specific model. An integrated high displacement hydraulic piston motor in the rotary cutter ensures high torque and high performance is consistently maintained during its deployment.

A filter on the feed line of the rotary cutter prevents impurities from entering the machine’s motor system. Gaskets fitted to the rotary cutter’s drums guard against dust while the machine is working in the ground.

The rotary cutter also features double support bearings for each of drums to ensure a longer service life for the machine, as its shaft system transmits only motion and bears no load.

Replaceable anti-wear plates are a low cost in terms of the machine’s maintenance.

SIMEX has been at the forefront of designing and manufacturing durable and high performing engineering products to solve specific problems in the mining sector.

The rotary cutter can also tackle tunnelling work and performs well at wall profiling work at building sites or basement digging, allowing the technology to be used in the construction industry.