Test case basis

Added Mgo sintering flux are: dolomite, calcined dolomite, high magnesium (light burnedmagnesite powder) and serpentine. Added Mgo sintering flux are: dolodolomite-processing-machinemite, calcined dolomite,high magnesium (light burned magnesite powder) and serpentine. However, due to lack of resources on the market of high magnesium, quality and volatile (high magnesium plant into the A dragonfly; 0 high content of more than 80%, compared with only about 50% lower, causinggreater volatility of MgO sinter.

Pilot program and the ratio of raw materials

According to the ratio of raw materials into an artificial weighing the mixer, mixing the first 80s,then add a spray of water while mixing 80s, and then lime digestion 5min, and then mixing 80sinto the second mixer, mix in the secondary pelletizing machine granulating 3mln, after themixture poured distributor in the fabric. Sintered material layer height of 700mm, sintering cupdiameter of 200mm, ignition lmin, insulation lmin, ignition vacuum 5000Pa, sintered negative10000Pa, automatically by the computer to determine the end of sintering, the sintering is complete for fall, grading, drum and other testing, during the experiment all data collected automatically by computer. From the experimental results, the use of light-burned dolomite, highmagnesium alternative care as a high-M flux, the indicators of sinter little effect. However,sintering cost perspective, higher prices due to high magnesium, to the factory price for theShadow 460 t, while the price of light-burned dolomite is much lower, about 120 yuan per ton, therefore, the use of light-burned dolomite as high Mgo flux, tons of sinter ore costs can bereduced by 5 yuan.

Industry applications

Production using high-light-burned magnesium dolomite replacement after use sintering machine utilization coefficient, drum index, screening index and other indicators have improved to varying degrees, of which the utilization factor increases 0.088t/m2. h, the drum index increased by 0.24 percentage points, screening index decreased by 0.36 percentage points,solid fuel consumption reduced 1.82 kg / t, but the alkalinity R qualified rate stabilization rate and slightly lower this is mainly due to light-burned dolomite site this month to add methods andequipment for reclaiming material due to the accident were forced to take direct supply.

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