VDMA

Germany 2019

Best of Germany 2014 - Mining Equipment and Mining Technology

Issue link: https://vdma.epubxp.com/i/1099192

Contents of this Issue

Navigation

Page 9 of 51

VDMA 8 VDMA MINING SUPPLEMENT • 2019 Economies of scale are well-understood in the mining business. Ordinarily, the larger the process stream, the more minerals are re- covered. Availability is key. Oftentimes, water and power present a problem. The plants are powered by electricity, which can be expen- sive in the remote parts of the world where most mines operate, and the mines usually have either too much water or not enough. Both situations are less than ideal. More recently, plant managers and metallurgists have turned to technology to help them improve costs and reduce the demand for water and electricity. Process improvements are based on site- specific conditions. Sometimes the mills need to crush the process stream to a fine consistency to liberate the metals, while others want to produce a size fraction with a consistent quality. Water is the traditional conduit for many of the processes and that's an expensive proposition in some of the more arid parts of the world where mines operate. Likewise, tailings storage is a huge cost consideration and, in some cases, an environmental liability. Providing Solutions Based in Duisburg, allmineral Aufbereitungstechnik GmbH cele- brated its 30 th anniversary last year. Over the years, this group of engineers has established a market-leading position with several pieces of mineral processing equipment, including the alljig jigging machines, allflux fluidized bed separators, allair dry jigging systems and the allgauss WHIMS (wet high intensity magnetic separator). Today, some of the world's largest iron-ore beneficiating plants and coal preparation plants use the alljig. Selling more than 550 machines, allmineral would be considered the world's market leader in jigging technology. The company not only focuses on wet processing, it also offers expertise in dry processing technology. The allair air jig is used for the beneficiation of coal and lignite in a dry environment. Since the indus- trial introduction of this innovative technology in 2002, allmineral has delivered more than 85 machines to coal operators worldwide. "We are technology providers with extensive equipment knowl- edge and mineral processing experience," said Marco Steinberg, managing director and CEO, allmineral. "These days our clients are asking for more and we are providing in the form of 'smart solu- tions.' They want more than just the equipment. They want the en- tire solution and we are supplying turnkey solutions." Beyond the handover, customers have told them they would like to have supervisory advice as far as the processes are concerned, Steinberg explained. So, allmineral now provides an on-site specialist who looks after the entire operation in terms of providing the products and meeting the customer's requirements. "This includes maintenance service and plant availability," Steinberg said. "Some of our customers operate in regions with limited technicians. With this service, allmineral provides a plant and a plant operations supervisor, who is employed by allmineral." allmineral is shifting from supplying equipment to providing solutions. Steinberg defined solutions as everything around the equip- ment, everything required to bring the equipment into operation and at the end to get the final product recovered, adding a dewatering process as an example. "But we would not do anything beyond that," Steinberg said. "This distinguishes us from an engineering company. We are not an engineering company, we are a technology provider." For allmineral, most of their applications are for wet processing. The company is currently involved with bringing three processing projects online for manganese in Georgia, coal in Indonesia and tungsten in Spain. At the Chiatura mine, located near the town of Chiatura in cen- tral-western Georgia west of Tbilisi, a complete plant designed by allmineral is helping to process manganese ore to the world market standard. With the turnkey processing plant, annual production is set to increase to 700,000 metric tons (mt). The allmineral plant has a rated capacity of 200 mt per hour (mt/h) of manganese ore. Pivotal to the efficient processing are two alljig jigs, one allflux and an all- gauss WHIMS high-intensity magnetic separator. Ore with grain siz- es between 1 mm and 5 mm is conveyed into an air-pulsed, almost entirely wear-free alljig F2200x3000 fine jig. Manganese ore with grain sizes between 5 mm and 20 mm is fed to an alljig G1700x3000 coarse jig. Manganese ore of less than 1 mm is fed to an allflux 500. Next, an allgauss WHIMS D-250 high-intensity magnetic separator with up to 18,000 Gauss separates the paramagnetic minerals from any weak magnetic minerals. The processing plant is designed to enrich the manganese content in the products to more than 38% by weight for a metal recovery of more than 90% by weight. allmineral was recently awarded a contract to plan, equip and supply a modern coal preparation plant for the SEKAKO mine in the central Kalimantan region of Indonesia. The 500-mt/h plant is expect- ed to go into operation by mid-2019. On this project, allmineral will be assisted with the implementation of the project by its long-standing partners and shareholders Citec Engineering and Hazemag. To meet the growing demand in the world market, Indonesian mine operators are tuning to cutting-edge processing technology to more efficiently wash sub-bituminous and bituminous coal with varying sulphur con- tent. The coal washing plant is equipped with a high-performance feeder breaker from Hazemag, shareholder of allmineral. At the core of the prep plant is a three-chamber alljig jig that will go into opera- tion soon, meticulously grading up to 500 mt/h. Particle sizes ranging Recovering Minerals Cost Effectively Processing plants turn to technology to improve operations For the Chiatura mines in Georgia, allmineral has designed a turnkey 700,000-mt/y manganese ore processing plant.

Articles in this issue

view archives of VDMA - Germany 2019