以进口高结晶水含量的锰矿粉为原料，经过开路二次高压辊磨预处理，模拟链篦机回转窑工艺制备高强度高品位氧化球团。结果表明，对于品位为w(Mn)= 43.09%、 铁的质量分数为6.49%、烧损14.64%及0.5~8 mm占77.81%的锰矿粉，经过高压辊磨预处理，<0.045 mm占59.18%，比表面积高达2653 cm2/g，在添加2.0%的膨润土、造球时间7 min、生球水分（16±0.5）%的条件下，取得了生球落下强度23.1次/0.5m、抗压强度10.20 N/个的良好指标；球团在预热温度1050 ℃、预热时间10 min、焙烧温度1340 ℃、焙烧时间15 min的条件下在管炉内焙烧固结，成品球团矿抗压强度可达到2711 N/个。成品球团矿中w(Mn)= 49.11%，S、P等有害元素含量较低，是优质的高炉或电炉原料。
Strong fired pellets were produced by simulating gratekiln process to supply highquality charges from some imported manganese ore fines containing high combined water, which was preliminarily pretreated by high press roll grinding. Manganese ore fines assaying 43.09% Mn, 6.49% Fe, and 14.64% LOI, and with 77.81% ranging between 0.5 mm and 8 mm site, are pretreated up to the specific surface areas of 2653 cm2/g and 59.18% passing 0.045 mm by passing the fines through press roller twice in open circuit. The finely ground manganese fines then were mixed with 2.0% bentonite, balled at 16% moisture for 7 min in disc pelletizer, the drop number and compressive strength of green balls reach 23.1 times/0.5 m and 10.20 N per pellet, respectively. After drying in oven, green balls were preheated at 1050 ℃ for 10 minutes and fired at 1340 ℃ for 15 minutes in electric tube furnace, the compressive strength of fired pellets reaches 2711 N per pellet. Therefore, these pellets are high quality burden for blast furnace or electric furnace due to high mechanical strength and high grade of Mn at 49.11% and low detrimental elements.
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