May 13, 2021
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first_imgBeijing: Beijing has nominated a former Hong Kong police chief nicknamed “the vulture” to lead the UN Office on Drugs and Crime, as it seeks another international posting after the fall from grace of Interpol’s former Chinese chief. The move to nominate Andy Tsang Wai-hung, currently deputy director of China’s National Narcotics Control Commission, comes as former Interpol chief Meng Hongwei faces bribery charges. disappearance last year was an embarrassing scandal for Interpol that observers said could damage China’s bid to burnish its international profile through global leadership posts. Also Read – ‘Hong Kong won’t rule out Chinese help over protests’The nomination also comes as China faces widespread criticism for its role in fuelling public health crises around the world, particularly in the United States. China is believed to be one of the main manufacturers of synthetic drugs — including opioids such as fentanyl — which have caused thousands of overdose deaths. While Hong Kong police commissioner, Tsang repeatedly defended the actions of his force, which at times was criticised for heavy-handed treatment of protestors in the months-long Occupy Central demonstrations. Also Read – Pak Army chief accompanies Imran at key meetings in ChinaHis tough on crime approach earned Tsang the nickname “the vulture” but apparently won him accolades in Beijing. After retiring from Hong Kong’s police force in 2015, he won a ceremonial job in mainland China. He was appointed to his current anti-drugs post this year. Tsang’s nomination showed “China’s steadfast support for multilateralism and for the work of the United Nations”, foreign ministry spokesman Geng Shuang told a regular press briefing Wednesday. “China will continue to contribute to efforts to fight transnational organised crime and to step up international anti-drug cooperation,” he added. China has nominated Tsang to become the director-general of the United Nations Office in Vienna, in addition to leading the UN Drugs and Crimes office, Geng said. But Beijing’s arrest of Meng could mar Tsang’s nomination. Meng — who had served as vice minister of public security in China — vanished last September during a visit to China from France, where Interpol is based, and was formally arrested in April. His wife Grace, who was given police protection in France after alleging an abduction attempt earlier this year, was granted asylum on May 2 along with the couple’s two children. China’s role in the drug trade could also be problematic. The country produces 85 percent of the world’s synthetic opioids, experts say, but in a trade war deal reached with the Trump administration, agreed to crack down on all fentanyl-like substances starting in May. The powerful painkiller is 50 times stronger than heroin and has caused record overdose deaths in the US.last_img read more

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first_imgWhile the evolution of dense medium separation (DMS) technology has seen various advances since the mid-1900s, there are still a number of ‘fundamentals’ that will allow users to reduce magnetite losses over the life of a DMS plant.Speaking shortly after the Southern African Coal Processing Society’s biennial conference in Secunda recently where Kwatani, represented by Jeremy Bosman, presented a paper addressing the impact of appropriate screen selection on dense medium recover and highlighted the importance of adhering to certain ground rules.“Across the different processes, there are basic principles that are common, such as the use of drain and rinse screens to recover magnetite from the product and reject streams,” says Kim Schoepflin, CEO of Kwatani.She says a concentration of magnetite in the dilute medium must also be achieved to give a suspension of high relative density, or overdense, medium using wet drum magnetic separators.Schoepflin outlines the fundamentals to be observed in restricting magnetite losses, regardless of which screening arrangement is chosen.“The feed arrangement onto the screen must ensure that the full width of the screen is utilised,” she says. “Low feed velocities are also critical, as this maximises the drainage rate on sieve bends and multi-slope screens.”She emphasises that the drain section, which includes both static and vibrating screens, must have sufficient area to recover 95% of the medium being fed to it, and that allowance must be made for potential blinding which will reduce the open area of the screen.“It is vital to take the average particle size and bed depth into account when selecting the screen width,” she argues. “Running at too high a bed depth will increase medium carry-over from the drain to the rinse section, and will also reduce the efficiency of the rinse water in washing off the medium; this in turn will lead to an increase in magnetite losses.”Another important aspect to observe is that sufficient rinse water must be used to wash off the adhering medium, without overloading the wet drum magnetic separators. Provision must also be made at the end of the screen – after rinsing – for the clean coal and reject material to dewater before being discharged off the end of the screen, says Schoepflin.last_img read more

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