tailieunhanh - Investigate decomposition of Dong Pao bastnasite with sulfuric at pilot scale

To investigate effects of decomposition roasting temperature and necessary acid amount for decomposition, ore concentrate with TREO content about 39% was used as original ore concentrate (three samples named as Q3, Q5 and Q6), the rates of ore and acid (by chemical equivalence) were 1/, 1/ and 1/, decomposition roasting temperatures were changed in a range of 400 – 420 oC, roasting time was 2h. |