论文部分内容阅读
大多数钛铁矿可以通过降低其表面氧化铝和二氧化硅包覆层的含量来提高品位。分批试验和扩大试验研究已经证明 ,Hicom磨机可以作为高强度擦洗设备成功地从钛铁矿表面除去大部分氧化铝和二氧化硅包层 ,从而提高产品质量和回收率。Hicom磨机虽然通常是作为磨矿设备使用 ,但也发现它可应用于高强度擦洗领域 ,如金刚石和砂矿选矿车间的擦洗等。用分批Hicom磨机对钛铁矿所进行的小型擦洗试验表明 ,在输入能量为 5～ 2 0kW·h/t时可有效降低其表面包覆层含量。一个典型例子为 ,输入能量为 10kW·h/t时 ,擦洗产品Al2 O3 含量降低 34% ,SiO2 含量降低 30 % ,其结果与酸浸工艺相当 ,而且还能增加产品的价值。输入能量的高低与产品Al2 O3 和SiO2 含量降低的多少有关。用 2 5kWHicom磨机在扩大试验厂对大量重金属精矿进行重复分批开路连续试验 ,给料速度为 1 5t/h。通过改变排料口面积 ,来改变擦洗能耗进行试验 ,以验证分批试验结果
Most ilmenite improves grade by reducing the amount of alumina and silica coating on its surface. Batch tests and extended pilot studies have shown that Hicom mills can successfully remove most of the alumina and silica cladding from the ilmenite surface as a high intensity scrubber to improve product quality and recovery. Although commonly used as a grinding equipment, Hicom mills have also found applications in high-intensity scrubbing applications such as scrubbing in diamond and sand dressing plants. Small scale scrub tests on ilmenite using a batch Hicom mill showed that the surface coating content can be effectively reduced at the input energy of 5 ~ 20 kW · h / t. A typical example is that when the input energy is 10 kW · h / t, the content of Al 2 O 3 in the scrub products is reduced by 34% and the content of SiO 2 by 30%. The result is equivalent to the acid leaching process, and the value of the product is also increased. The level of input energy is related to the decrease of Al 2 O 3 and SiO 2 content in the product. A large batch of heavy metal concentrates was continuously and batchwise opened with a 25kHHicom mill in an expanded pilot plant at a feed rate of 15t / h. By changing the discharge port area, to change the scrub energy consumption test to verify the batch test results