The Asia Miner

SEP-OCT 2014

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

Issue link: https://asiaminer.epubxp.com/i/381094

Contents of this Issue

Navigation

Page 78 of 91

September/October 2014 | ASIA Miner | 77 Supplier News www.chemgrout.com / 708.354.7112 Cable & Rock Bolts • Void Fillings • Waterproofing • Shaft Sealing Making grouting proftable for over 45 years World's Leader in Underground Grouting Equipment INDIA is the third largest coal supplier in the world and German manufacturer Wirtgen Group is assisting the industry in achiev- ing sustainable growth. Indian mine operator Sainik Mining and Allied Services, which is a contractual partner of the country's largest coal producer Coal India, operates a total of 21 Wirt- gen surface miners (SM). The Wirtgen Group's local subsidiary has es- tablished a fne tradition of excellent customer service with individually tailored service contracts used for several years to guarantee security in planning and coal mining operations. Ten Wirtgen 2200 SM are in operation at the 530sqkm Gevra Mine in the province of Chhattisgarh. The vertical coal seams in Gevra mine require a selective mining method while 90% of the cut coal should have a maximum particle size of 100 millimetres. This is why, since 1999, the mine's operators have gradually switched mining activities from drilling and blasting to Wirtgen surface mining. Presently, 80% of the Gevra coal is being mined using this environmentally friendly technique while another 20% is mined via convention- al methods. The mine operators are planning, however, to shift to 100% surface mining within the next two years. Surface mining has proven to be clean, safe and more environmental friendly at Gevra. In the mine, windrowing has turned out to be the optimal mining method and due to this tech- nique, it is easier to check the material quality while coal can also be mined in the most eco- nomical way. With windrowing, the cut coal is placed directly behind the machine, between the crawlers, without the use of a loading conveyor. This allows material to be cut independently of the loading process, although the coal has to be loaded separately via front loader later on. As a result, each 2200 SM, with a cutting width of 3.8 metres and a cutting depth of 300 millimetres, can mine roughly 15,000 tonnes of coal. The annual capacity of the coal mine is an enormous 80 million tonnes, 90% of which is be- ing used as thermal coal for power generation in thermal power plants. Surface miners from Wirtgen are the ideal solu- tion to mine the large deposit of more than 10 billion tonnes as effciently as possible. The service contract especially tailored to Gevra Mine guarantees that two experienced Wirtgen engineers are available all the time on site during operation. They provide support for all necessary maintenance activities relating to the surface mining feet, including machine repairs, preventive maintenance measures, in- spection of certain machine parts, training of machine operators, etc. The Wirtgen experts also make sure that all spare parts needed are being kept on stock. OUTOTEC will deliver its iron ore pelletizing technology to India after receiving an order from a customer for the design and delivery of an iron ore pelletizing plant to be constructed in northeast India. The value of the order is approximately EUR70 million and it was to be booked in Outotec's second quarter 2014 order intake. Outotec's scope of delivery includes technology for a travelling grate pelletizing plant, engineering, key process equipment as well as erec- tion and commissioning services. Once operational the plant will an- nually produce 4 million tonnes of iron ore pellets to be used as raw material for steel production. The new pellet plant will be built adjacent to one of the oldest mine sites in India. It will allow recycling of low value iron ore fnes and slimes for conversion to value added products. Outotec has delivered nearly 70 pelletizing plants worldwide and about two thirds of global pellet production derives from Outotec travelling grate process. "We are happy to share our vast pelletizing expertise with this cus- tomer to turn waste into products and thus improve their proftability. This is a very unique effort towards sustainability in India, where environmental awareness is rapidly rising," says Outotec's Met- als, Energy & Water business area president Robin Lindahl. "Also, this is our largest order in the extremely cost-conscious Indian mar- ket and indicates that there is demand for our innovative and sus- tainable solutions." Meanwhile, Outotec also announces that it has agreed with Tomra Sorting GmbH to cooperate in the supply of Outotec-branded sorting solutions for the mining and metallurgical industry. This will lead to an expansion in Outotec's comminution product portfolio. Tomra Sorting is a leader in sorting technology, setting the bar for sensor-based sorting. By combining Tomra's sorting equipment and Outotec's comprehensive application and comminution expertise, Ou- totec says customers will be offered energy-effcient process solutions which help increase productivity, decrease costs and thereby extend the life of mining operations and increase the overall value of deposits. Sorting is used to separate ore from waste rock at mine sites. Tom- ra's sensor-based sorters can reduce specifc energy consumption by 15%, as well as reduce the amount of water used by three to four cubic metres per tonne of ore. Although sorting is a rather new technology in the metal mining industry, it is a proven concept in industrial minerals processing, recycling and demanding food industry. Tomra has sold approximately 10,000 devices for these industries worldwide. Outotec pellet plant for India Wirtgen surface miners drive effciency

Articles in this issue

Links on this page

Archives of this issue

view archives of The Asia Miner - SEP-OCT 2014