Caqital Equipment News October 2018

MINING TIPPERS

Construction/Public and Special at Scania South Africa, tells Capital Equipment News that the client struggled with cycle times in the first place. Experts from both Scania South Africa and Scanlink visited the site late last year to look at possible areas of improvement. “We managed to slightly improve the cycle times on the single-cylinder units by increasing the oil flow pump from 80 to 100 ℓ , as well as increasing the tipping speed,” explains Naude. To further better the cycle times, R. Davis and Co. was this year introduced to Scania’s twin-cylinder mining tipper and went on to purchase four units which were delivered in August this year. “The new tippers with a dual cylinder achieve a 30-second tip and return cycle compared with 55 seconds on the first four single- cylinder tippers,” says Perlman. “They also offer 1,3 m³ more payload than the older tippers. We have also fitted them with rock ejectors to protect the rear tyres.” performance of the Scania mining tippers to date. “The performance of the vehicles has been beyond our expectations. We are currently moving 32,4 m³ per hour of product on the older Scania trucks and 33,75 m³ per hour of product on the new tippers. The vehicles run two shifts per day,” explains Nhongonhema. One of the most noticeable improvements has been the fuel efficiency. Consumption varies from 7,75 to 8,27 ℓ /hour on the Scania tippers, compared with 18 ℓ /hour with the articulated haulers working on site. Uptime and equipment availability are some of the key operational gains. “The first four Scania tippers, in operation since June 2017, have lready clocked between 3 500 and 4 000 hours and the only breakdown we experienced was that of a leaking radiator hose on one of the trucks. This was a very simple repair which Scanlink attended to timeously and efficiently as part of the warranty,” says Davis. “In a nutshell, the Scania mining tippers are performing well for us; the productivity is excellent and operational costs are just over 50% of the costs of operating a comparable ADT – so we are moving more payloads at lower running costs and much lower downtime. We are looking at further boosting our fleet with four more Scania tippers later this year or in early 2019,” adds Davis. The contractor is also looking at five-year replacement Gains abound Nhongonhema is pleased with the

“We have had many enquiries from Zimbabwe this year. Demand has been great and we expect to exceed our annual targets by October already.”

Adriaan Serfontein, Export Sales Representative at Scania South Africa

Scania and Scanlink helped the customer improve the cycle times on the single-cylinder tippers by increasing the oil flow pump from 80 to 100 ℓ .

before boosting the fleet with another four G410 8x4 (dual-cylinder) tippers delivered at the start of August this year. “R. Davis and Co. is a strategic customer for us. We first supplied them with Scania mining tippers in 2017, although they were already operating two old first generation mining tippers on hire,” explains Daniel Perlman, MD of Scanlink, Scania’s authorised distributor in Zimbabwe. “The customer was very impressed with the two Scania 8x4 irst generation mining tippers on hire. We were then able to demonstrate that with extra payload (32 t) of the mining tipper range, their cost per tonne would be even better. To date, they are operating 8 x Scania G410 8x4 mining tippers of their own,” adds Perlman. According to Mike Davis, MD of R. Davis and Co., the Scania tippers are currently deployed to haul run of mine (ROM) material from the pit to the processing plants. “We are more

than pleased with their performance to date. We have experienced greater fuel economy, good cycle times and minimal downtime with our Scania vehicles,” explains Davis. Fleet in detail R. Davis and Co. owns 18 articulated dump trucks and eight Scania mining tippers. Currently, only the eight Scania tippers and two 35 t ADTs are operating at the Cam and Motor Gold Mine project. Claudius Nhongonhema, mine manager at R. Davis and Co., explains that the Scania tippers are hauling ROM from the pit, at a pit depth of 50 m, to the processing plant, over distances of 1,6 km. The tippers are also deployed to haul waste material to the dump, at a haul distance of 1,4 km and a climb of 70 m. The first four G410 8x4s delivered last year are single-cylinder mining tippers. Theuns Naude, Segment Manager,

CAPITAL EQUIPMENT NEWS OCTOBER 2018 14