Mechanical Technology November 2015

⎪ Materials handling and minerals processing ⎪

Comminution expansion drives sand and aggregate success

Emirates, Gulf region and Asia. The company’s new minerals pro- cessing plant will assist Stevin Rock to increase the recovery of water, one of the country’s most valuable resources. It will further enable the water recovered to be reused, thus saving costs. In addition to this, the plant will upgrade the fine aggre- gate product to internationally accepted standards, which will increase the value of the product and their revenue stream. Supplying equipment to one of the Middle East’s largest and most presti- gious quarry operating companies is a significant accolade for Weir Minerals and a milestone that will secure the company’s global position in the sand and aggregate sector in future. Stevin Rock joined forces with Ras Al Khaimah Rock Company (RAK Rock) late in 2007. Together the two companies form one of the largest quarrying enti- ties in the world, employing more than 2 500 people. q

material to several of the leading devel- opers and construction companies both inside and outside the Middle East region. The establishment of a successful working relationship with this globally renowned company has further enhanced Weir Minerals’ credibility in the industry and guarantees its capability to supply world class equipment to all major quar- rying regions across the globe. Stevin Rock LLC’s three Emirate of Ras Al Khaimah-based quarries (Khor Khuwair, Al Ghail and Kadra) have the capacity to produce and sell more than 45-million t/year of high-grade limestone, gabbro rock, concrete and asphalt ag- gregates for the construction and manu- facturing markets of the United Arab

Weir Minerals is gaining acceptance in the global sand and aggregates sector following the expansion of its comminution offering with the inclusion of the Trio product range.

A s an example of the success of Weir Minerals’ expanded com- minution offering, the company has recently supplied all of the equipment for a large-scale dewatering sand plant to the Middle East’s leading quarry operator Stevin Rock LLC. Over the last 35 years, Stevin Rock LLC has developed a reputation that has become synonymous with reliability and consistency, delivering the highest quality

Trio products supplied to Stevin Rock LLC include crush- ers, screens, feeders, chutes and material handling solutions.

Weir Minerals’ Trio equipment offers customer extensive crushing solutions.

Beltcon 18 Conference – Where theory and practice meet H eld once every two years, the International Materials Handling Conference (IMHC) – Beltcon 18, with reduced energy, and case studies il- lustrating design versus actual outcomes and lessons learned over several years of plant operation.

to facilitate bringing a conclusion to both issues as a matter of urgency based on the findings of the discussion. The exhibition, held in conjunction with the conference, showcased the latest technology available in the materials han- dling and conveyor industry. Comments an exhibitor: “Restricted access to the exhibi- tion area during proceedings allowed us to relax and enjoy the conference. We will be back in 2017.” The programme, authors, and general details of Beltcon 18 can be accessed on the Beltcon web site: www.beltcon.org.za. Beltcon 19, will be held mid-year in Johannesburg in 2017, continuing the tradition of bringing the latest ideas and groundbreaking technologies to the materi- als handling and belt conveying industry. q

marked its 38th year in 2015. The materi- als handling industry enjoyed presentations of the latest trends in conveyor transport, new technology and case studies presented by international and local experts. This year brought some changes into the subject line-up. More papers on practical topics were introduced, such as basic com- puter maintenance, chute design essentials, engineering tools for noise reduction and the correct approach for designing idler rollers. In addition, a number of papers were aimed at the design houses addressing such things as operating conveyor systems

Aramid belting and splicing was dis- cussed, as was materials handling storage design. Topics also covered the effect of idler bearing misalignment on bearing life, protection and monitoring of belting, variant lagging friction coefficients and implications, and bottom cover failure of idlers and pulleys. A panel discussion addressed two very relevant issues – the legal requirements for preventing runback in conveyors, and those pertaining to nip guards. The Conveyor Manufacturers Association (CMA) agreed

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Mechanical Technology — November 2015