The careful alignment of screens and crushers in processing makes for optimal throughput and efficiency, by ensuring that all settings and parameters are ideally matched.

“The Kwatani product can now give their vibrating screen customers added benefits in this regard, being part of the global Sandvik group – which is well known for its crushing solutions,” says Kenny Mayhew-Ridgers, Regional Business Director at Sandvik Rock Processing Solutions South Africa. “The advantage is that the Kwatani screens can be specified and optimised with Sandvik’s range of crushers – ensuring that the key elements of the circuit are perfectly matched.”

Earlier this year, Kwatani and the mining related business of Schenck Process Group (SP Mining) were incorporated into the Sandvik group within Sandvik Rock Processing Solutions South Africa. Mayhew-Ridgers explains that the screens and crushers in any mineral processing plant are two critical lines of equipment – and they need to be well integrated to optimise the performance of both.

“There is a risk that operators and service technicians may focus on the one item without taking into account the impact of the other,” he says. “The settings and parameters on both the screens and crushers must suit the mined material, and must be perfectly aligned for best results.”

If the crusher is not delivering the required size distribution of material, for instance, the screen will not perform to expectation. The Kwatani product is now able to specify a vibrating screen along with the optimal Sandvik crusher specification, he explains. 

“With Sandvik as the OEM for both equipment lines, we bring our in-depth product insight into how the different equipment will best serve the customer’s specific requirements,” he says. 

An integrated solution is based on a careful assessment of the nature and size distribution of the material which will be fed into the crushing and screening circuit, says Gavin McLaggan, Lifecycle Services Manager for Africa at Sandvik Rock Processing Solutions South Africa. This opens the door to increased efficiency and bottom-line profitability.

“Among the improvements that can be achieved are reduced energy consumption and less wear on the crusher liners – while gaining more throughput,” says McLaggan. “Where there are changes to the orebody and resulting material, there may be an opportunity to change the particle size distribution (PSD) and raise the throughput further.”

The Kwatani product’s inclusion into Sandvik has facilitated a valuable two-way sharing of knowledge on screening technology, says Mayhew-Ridgers. This is a considerable benefit for customers as decades of research and development are combined.

With its strong tradition of training and upskilling – both in-house and through educational institutions – Sandvik Rock Processing is fast establishing a solid reputation for quality screening solutions as well as the expertise of its staff.

According to Lylian Kgatla, Human Resources Manager at Sandvik Rock Processing South Africa, the firm commitment to skills development is a key ingredient of its success. The company was formed earlier in the year following the acquisition by Sandvik of Kwatani and Schenk and is steadily growing its customer footprint with the value of its offerings being readily recognised by customers in South Africa and across the globe. This reputation based on excellence in designing, manufacturing and supporting its screening solutions is being maintained through continuous upskilling, says Kgatla.

“What is also important has been to make sure that our training efforts are well aligned with the company strategy as well as with employment equity and Black Economic Empowerment (BEE) requirements,” she says. “Most of our customers are in the mining sector, and in South Africa this means that they have objectives in terms of the Mining Charter – which their supply partners must help them to meet.”

Meeting the technical and operational expectations of its customers remains at the heart of Sandvik Rock Processing South Africa’s training programmes – which range from apprenticeships and learnerships to university bursary schemes. Apprentices are selected and supported to pursue careers such as boilermakers, fitters and millwrights; the apprenticeship programme lasts three to four years, and is conducted in collaboration with the Manufacturing, Engineering and Related Services Sector Education and Training Authority (Merseta).

“These are key skills for our industry, and need to be supported by all stakeholders to maintain the necessary expertise for the country’s industrial growth,” she says. “The quality of training is ensured by the unit standards which are in place for each area of expertise.”

Sandvik Rock Processing South Africa also supports external learnerships for unemployed youth, working with outside training organisations that provide the theory – while the practical experience is gained by exposing these candidates to the company’s extensive manufacturing facility in Kempton Park. The number of youth supported by the company in this programme has risen exponentially over the years.

“This training makes us feel very proud, as we have been able to absorb some of the candidates into the company – and I look forward to watching their progress,” she says. The learners are previously disadvantaged, unemployed learners who may not have yet earned a matriculation certificate. The programme advances them through NQF Levels 1, 2 and 3 so that they can achieve a matric-level qualification for their further studies. She highlights that the skills they learn open the door to employment after achieving NQF Level 3.

There is also a bursary programme focused on disciplines relevant to Sandvik Rock Processing south Africa to fund students in scarce and critical fields such as mechanical, design and process engineering. Where possible, qualified students are also brought into the business and exposed to the various aspects of Sandvik Rock Processing’s operation – often growing into successful careers there.

Kgatla highlights how crucial it is for mentoring and coaching to be an integral aspect of the employment and growth process. While many organisations expect new employees to ‘sink or swim’, she argues that retaining and building expertise demands a more formal and committed approach to nurturing staff.