红土矿焙烧窑皮问题的研究和控制

MYANMAR DAGAUNG TAUNG NICKEL PROJECT ROTARY KILN STICKY SKIN RESEARCH AND IMPROVEMENT

缅甸达贡山镍矿项目自生产以来,回转窑焙烧红土矿长期受到窑皮及"结圈"的影响,焙砂温度一直被迫控制在400℃左右,对电炉熔炼造成严重影响。结合窑皮形成理论,通过对该厂工艺存在问题进行研究和针对性地改进,窑皮及"结圈"问题得到有效控制,焙砂温度逐步提高到700℃以上,基本满足了电炉生产的要求。

Since the start of production,Myanmar Dagaung Taung Nickel project rotary kiln had been affected by sticky skin for a long time in the roasting laterite ore process. The nickel ore temperature had been forced to control lower,only about 400 ℃. This had brought about a serious effects in electric furnace smelting. Combining with the theory of kiln skin formation,through the research and targeted improvement on the problems existing in the process,the problem of sticky skin has been got effective control. The nickel ore temperature gradually has increased to more than 700 ℃. It basically meets the production requirements of electric furnace.