* Vale's 2020 iron ore output down 0.5%
* Vale's Q4 output falls 5% vs Q3
* Dalian iron ore rises 1.8% after two-day fall
By Enrico Dela Cruz
Feb 4 (Reuters) - Iron ore futures rose on Thursday, after Vale SA released lacklustre annual production figures, as the Brazilian mining giant struggled to boost output due to operational constraints as a result of the pandemic and a dam disaster two years ago.
The 2019 deadly tailings dam collapse at Vale's Corrego do Feijao mine that led to restrictions on mining activities in Brazil, the world's second-largest iron ore supplier, resulted in a tight global supply that added upward pressure on prices last year driven mainly by China's robust demand.
Iron ore on China's Dalian Commodity Exchange DCIOcv1 rose 1.8% to 958.50 yuan ($148.43) a tonne by 0330 GMT, after two days of losses.
On the Singapore Exchange, the steelmaking ingredient gained 0.9% to $148.30 a tonne SZZFH1 .
Vale VALE3.SA reported a 0.5% decline in 2020 iron ore output to 300.4 million tonnes, at the bottom of its guidance of 300-305 million tonnes, though it flagged a potential rebound in both output and sales this year. suffered a 5% quarter-on-quarter decline in output due to higher rainfall levels and tailings disposal restrictions.
"The Brazilian producer has been struggling to raise output following the virus-related restrictions last year," said ANZ senior commodity strategist Daniel Hynes.
"They are also behind schedule in getting safety approvals for dams following the disaster."
Vale's challenges tempered optimism over prospects for Brazil's shipments this year, underpinned by data showing higher January exports. iron ore in top steel producer China steadied at an eight-week low of $150 a tonne on Wednesday, SteelHome consultancy data showed. SH-CCN-IRNOR62
A report that China's central bank will keep liquidity reasonably ample to support economic recovery also provided a positive background in Thursday's trading. steel rebar on the Shanghai Futures Exchange SRBcv1 rose 1.4%, hot-rolled coil SHHCcv1 climbed 0.7% and stainless steel SHSScv1 gained 0.2%.
Coking coal DJMcv1 advanced 0.9% but coke DCJcv1 was stable.