System and method for preparing 200-class stainless steel base solution
A stainless steel and base liquid technology, applied in fluidized bed furnaces and other directions, can solve the problems of high cost, complex process flow, numerous production lines, etc., to reduce smelting energy consumption and production cost, simplify the process flow, and save the preparation of flux. the effect of entering
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Embodiment 1
[0146] (the mass fraction of Ni is 1.8%, the mass fraction of Fe is 18%, the mass fraction of MgO is 20%, the mass fraction of SiO 2 The mass fraction of Cr is 36%), manganite (the mass fraction of Mn is 20%, the mass fraction of Fe is 30%) and chromite (the mass fraction of Cr is 40%, the mass fraction of Fe is 18%) Mix with reduced coal in a mixing device at a mass ratio of 68:18:14:15 to obtain a mixed material, and shape the mixed material on a roller press to obtain a mixed pellet, and send the mixed pellet into the chain grate Dried in the machine to obtain dried pellets (moisture content less than 2% by weight), the half-meter drop strength of the mixed pellets and the dried pellets is more than 10 times. Send the dried pellets into a rotary hearth furnace for reduction treatment. The reduction temperature is 1400°C, and the reduction time is 40 minutes. After the reduction, hot metallized pellets are obtained. The metallization rate of iron is 85%, and the chromium Th...
Embodiment 2
[0148] The laterite nickel ore (the massfraction of Ni is 2.0%, the massfraction of Fe is 25%, the massfraction of MgO is 15% with the particle diameter of 1mm, SiO 2 The mass fraction of Cr is 40%), manganite (the mass fraction of Mn is 15%, the mass fraction of Fe is 35%) and chromite (the mass fraction of Cr is 45%, the mass fraction of Fe is 16%) Mix with reduced coal in a mixing device at a mass ratio of 60:20:15:15 to obtain a mixed material, and shape the mixed material on a double-roller ball press to obtain a mixed pellet, and send the mixed pellet into the chain grate Dried in the machine to obtain dried pellets (moisture content less than 2% by weight), the half-meter drop strength of the mixed pellets and the dried pellets is more than 10 times. Send the dried pellets into a rotary hearth furnace for reduction treatment. The reduction temperature is 1450°C, and the reduction time is 35 minutes. After the reduction, hot metallized pellets are obtained. The metalliza...
Embodiment 3
[0150] (the mass fraction of Ni is 1.9%, the mass fraction of Fe is 25%, the mass fraction of MgO is 25%, the mass fraction of SiO 2The mass fraction of Cr is 38%), manganite (the mass fraction of Mn is 18%, the mass fraction of Fe is 32%) and chromite (the mass fraction of Cr is 38%, the mass fraction of Fe is 15%) Mix with reduced coal in a mixing device at a mass ratio of 70:16:14:12 to obtain a mixed material, and shape the mixed material on a double-roller ball press to obtain a mixed pellet, and send the mixed pellet into the chain grate Dried in the machine to obtain dried pellets (moisture content less than 2% by weight), the half-meter drop strength of the mixed pellets and the dried pellets is more than 10 times. Send the dried pellets into a rotary hearth furnace for reduction treatment. The reduction temperature is 1350°C, and the reduction time is 50 minutes. After the reduction, hot metallized pellets are obtained. The metallization rate of iron is 84%, and the c...
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