The Asia Miner

JUL-SEP 2018

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

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the asia miner • volume 15 • issue 3 31 WASTE TO ENERGY For decades, China was the largest importer of waste, but at the beginning of this year, it banned 24 types of scraps from entering the country. As reported by the Internaঞonal Solid Waste Associaঞon (ISWA) in the Global recycling markets - plasc waste: A story for one player – China report, the increase in global plasঞc producঞon in the past 10 years alone equals "all of the plasঞcs produced during the previous 30 years – from 1.5 million metric tonnes (Mt) in 1950 to 288Mt in 2012". As the world's waste exporters conঞnue to scramble for an alternaঞve to China, in April, China's Ministry of Ecology and Environment (MEE) announced another ban of further 32 types of scrap materials including 16 scrap metal and chemical waste products. The 16 banned products include steel smelঞng slag containing more than 25 per cent of the metal manganese, and ethylene polymer waste. The other 16 items that will be banned by the end of 2019 include ঞmber waste and scrap metals such as stainless steel, tungsten and magnesium. "In ঞmes when purity and rising recycling rates are the key to success, we are well posiঞoned with both our process experঞse and the necessary technology," reports Peter Funke, CEO of STEINERT. "We offer operators of disposal faciliঞes the full range of magneঞc separaঞon, non-ferrous metal separaঞon and state-of-the-art near-infrared sorঞng systems." Plant operators can now sort black plasঞcs with the UniSort Black system. And the UniSort Film NIR efficiently separates 2D materials from the material flow. Both are issues that can make a real difference to recycling rates. Recently, STEINERT unveiled its EddyC MOVE – a mobile non-ferrous metal separator, which separates ferrous and non-ferrous metal in one step. The range of applicaঞons includes wood waste, demoliঞon waste, refuse-derived fuel, commercial and mixed construcঞon waste. STEINERT focuses on two factors with respect to metal recovery: purity and process flexibility. For example, the STEINERT KSS mulঞ-sensor machine enables sorঞng faciliঞes to separate metals homogeneously. It consists of a plaorm which deploys various sensors such as 3D, colour and inducঞon recogniঞon. The system can also be fi•ed with a fourth sensor (near-infrared, x-ray transmission or x-ray fluorescence sensor). The x-ray sorter ensures that heavy metals are separated from a lightweight metal fracঞon. UniSort Black allows plant operators now to also sort valuable black plascs for the first me STEINERT provides answers to China's foreign waste ban sourced from a range of mica minerals, including lithium micas. The purified amorphous silica may be sold directly or used as a feed to produce a variety of other marketable silica products. S-Max™ employs three stages; grinding, sulphuric acid leach regimes at atmospheric pressure, followed by differenঞal classificaঞon and flotaঞon streams, and can be integrated with L-Max® process. When lithium bearing mica concentrates are treated, the S-Max™ leach liquor can feed directly into the first impurity removal stage of the L-Max® process. Furthermore, the leach liquor from non-lithium bearing micas including muscovite and bioঞte may be treated to produce valuable by-products including sulphate of potash (SOP) ferঞliser. When combined with L-Max® silica producঞon costs are expected to be extremely compeঞঞve. "S-Max™ has been more than a year in the making and is a complementary process to L-Max®," said Mr Walsh. Lepidico is in the process of compleঞng a Feasibility Study into its first Phase 1 Plant to be located in Sudbury, Ontario, Canada. It is of a size considered to be commercial but is approximately 20 per cent of what would be considered a full-scale plant. Subject to demonstraঞng to the market the quality and low-cost nature of L-Max® via the Phase 1 Plant, future full- scale plants would be best located in or near the Great Lakes Megalopolis, mainland Europe, coastal Japan/Korea/China, and perhaps ulঞmately in Australia. "S-Max™ is being integrated into the engineering design for the Phase 1 Plant Project in Sudbury and is expected to lead to reduced consumable consumpঞon rates, higher recoveries of lithium and potassium, and the producঞon of a broader suite of silica products than L-Max®," said Mr Walsh. L-Max® process technology mini plant run

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