Caterpillar ’ s new M315D2 and M317D2 wheeled excavators offer a robust fuel-injection system , versatile front-linkage configurations , expanded work-tool capability and new operator-comfort features . The Cat C4.4 ACERT engine meets China Nonroad Stage III emission standards ( equivalent to US EPA Tier 3 / EU Stage IIIA ), while a water-in-fuel switch indicates when draining is required , reducing the risk of fuel-system contamination .
Travel speeds of up to 37kph reduce travel time and transportation costs , and centralised service points allow for convenient ground-level maintenance access . Each model has two stick options , and a one-piece variable adjustment boom ensures easy operation . Available with a wide range of attachments , the new excavators are equipped with the Cat ProductLink system and the web-based VisionLink application , allowing for remote monitoring .
Caterpillar
The new Cat D2 Series excavators offer a robust fuel-injection system , versatile front-linkage configurations , expanded work-tool capability and new operator-comfort features .
Weba Chute Systems help eliminate excessive dust
Weba Chute Systems
The worldwide trend across all industries to reduce dust in the working environment is underpinned by the dangers when personnel are exposed to excessive dust . This is particularly true in the mining sector where large volumes of material are conveyed vast distances , and moved from one conveyor system to the next before reaching its destination . Weba Chute Systems provides a viable solution to this potentially hazardous situation where excessive dust , especially fines , can be both hazardous to workers ’ health and create greater abrasion to wearing parts resulting in increased maintenance .
According to managing director of Weba Chute Systems , Mark Baller , the company ’ s custom engineered transfer systems have played a key role in addressing the dust issue for many years on mines across the world . “ Most of the dust generated in the mining and minerals beneficiation industries is created during the transfer of material , and it is not enough to merely install extractive equipment ,” he explains . “ It is essential to identify the actual source of the dust problem and engineer an appropriate transfer system to minimise the dust .” Once this has been done , less powerful dust extraction equipment will be needed with consequent savings in both capital equipment expenditure and energy consumption . By controlling the fall of material in the transfer point , material degradation can be dramatically decreased by up to 80 %, with a resultant decrease in dust and noise emission .
Custom engineered Weba Chute Systems have played a key role in addressing the dust issue for many years on mines across the world .
Weba Chute Systems
The Weba Chute System is configured to control the direction , flow and velocity of the calculated volume and type of material processed in a particular application .
“ Obviously the higher the drop , the greater the potential for more dust to be created . The Weba Chute System is configured to control the direction , flow and velocity of the calculated volume and type of material processed in a particular application . This absolute control of material has a marked effect on impact resulting in significantly lower amounts of fines and dust being created ,” he continues .
The locally developed and manufactured Weba Chute System is designed around the principle of conveyed material impacting on surfaces that already contain material . This is achieved by using a Cascade system to create a ‘ super flow ’ effect . This feature plays a key role minimising the generation of excessive unwanted fines and associated dust . While it is considered important to incorporate the Weba Chute System during the design phase of new projects , these innovative chutes can be retrofitted to existing installations thereby overcoming existing dust problems . The company ’ s design philosophy is simple . Each application is individually assessed in terms of its particular requirements , and the most appropriate solution is provided .
Baller says that there are more than 4 000 custom designed Weba Chute Systems operating successfully across the globe handling close on 2 billion tons a month . Tonnages handled vary between 40 tons and 12 000 tons per hour with particle sizes being transferred more than 900mm to 50-micron super fines .
36 _ QUARRY SA | JULY 2017