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在小型的转筒式反应器中对硫化物矿浆的生物浸出进行了研究。反应器附有内壁上的卧式浆叶以提升矿浆。反应器的性能可通过在氧化铁硫杆菌(ATCC 19859)的存在下生物浸出难选的含金黄铁矿精矿来测试。在矿浆浓度为50%和转筒转速为0.5～1.0r/m时,精矿能高效地进行生物浸出。在相同的矿浆浓度下,用常规的搅拌反应器来生物浸出该精矿的几次尝试均表明细菌活性受到了严重的抑制。实验结果证实:同常规的搅拌反应器相比,筒式反应器可允许对更高浓度的矿浆进行处理。由于很好地控制了矿物颗粒的磨损,从而提高了细菌活性。
The bioleaching of sulfide slurries was investigated in small drum reactors. The reactor is equipped with horizontal blades on the inner wall to lift the slurry. The performance of the reactor can be tested by bioleaching the refractory gold-bearing pyrite concentrate in the presence of Thiobacillus ferrooxidans (ATCC 19859). Concentrates can be efficiently bioleached at pulp concentrations of 50% and rotor speeds of 0.5-1.0 r / m. Several attempts to biolean the concentrate with a conventional stirred reactor at the same pulp concentration have shown that bacterial activity is severely inhibited. The experimental results confirm that the cartridge reactor allows the treatment of higher concentrations of pulp than conventional stirred reactors. Due to well controlled wear and tear of mineral particles, thereby increasing bacterial activity.