Preparation method of ferrochromium-molybdenum alloy
A molybdenum alloy and ferrochromium technology is applied in the field of preparation of ferrochromium molybdenum alloy, which can solve the problem of high production cost and achieve the effects of reducing power consumption for smelting, uniform ingredients and low price
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[0019] A preparation method of chromium-iron-molybdenum alloy, comprising the steps of:
[0020] Step (1): Grinding the molybdenum ore containing sulfur and cobalt;
[0021] Step (2): Uniformly mixing the ground molybdenum ore with chromite powder and reinforcing agent, adding water to perform briquetting treatment to obtain pellets, and drying the pellets;
[0022] Step (3): uniformly put the dried pellets into a rotary hearth furnace for high-temperature reduction to obtain metallized pellets;
[0023] Step (4): Grinding the metallized pellets again, then adding a hololytic agent, performing high-temperature reduction again, melting and separating at high temperature, and obtaining chromium-iron-molybdenum alloy.
[0024] Preferably, in step (2), the mass ratio of molybdenum ore to chromite powder is 1:44-1:46, and the mass ratio of molybdenum ore to reinforcing agent is 1:0.1-1:2. Further, the mass ratio of molybdenum ore to chromite powder is 1:45, and the mass ratio of ...
Embodiment 1
[0032] Embodiment one, step (1): grind molybdenite; Step (2): grind molybdenite and chromite powder, particle size is 5 nanometers reinforcing agent: Cr 3 C 2 Mix evenly according to the mass proportion of 1:44:1, add water to carry out pressure ball forming treatment to obtain pellets, and dry the pellets; step (3): put the dried pellets evenly into the bottom of the rotary Carry out high-temperature reduction in the furnace at 1600 degrees Celsius for 60 minutes to obtain metallized pellets; step (4): grind the metallized pellets again, and then add all-analysis agent: ketone, perform high-temperature reduction again, and reduce The time is 20 minutes, the high temperature is melted and separated, and the chromium-iron-molybdenum alloy is obtained.
Embodiment 2
[0033] Embodiment two, step (1): the molybdenite is carried out grinding process; Step (2): the molybdenite after the grinding and chromite powder, particle size are the strengthening agent of 15 nanometers: Fe 3 Al is uniformly mixed according to the mass proportion of 1:45:0.1, and water is added to carry out pressure ball molding treatment to obtain pellets, and the pellets are dried; step (3): put the dried pellets evenly into the Carry out high-temperature reduction at 1800 degrees Celsius in the hearth furnace for 80 minutes to obtain metallized pellets; step (4): grind the metallized pellets again, then add all-analysis agent: organic acid, and perform high-temperature reduction again , the reduction time is 30 minutes, high temperature melting and separation, and the chromium-iron-molybdenum alloy is obtained.
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