Method for separation production of rare earth ferrosilicon alloy with rotary hearth furnace
A rare earth ferrosilicon alloy and rotary hearth furnace technology, which is applied in the direction of rotary drum furnace, furnace, electric furnace, etc., can solve the problems of increasing the environment, burdening production costs, increasing energy consumption of submerged arc furnaces, etc.
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Embodiment 1
[0026] A method for separating and producing rare earth ferrosilicon alloy in a rotary hearth furnace comprises the following steps:
[0027] (1) Raw material processing, the raw material adopts iron-containing rare earth raw ore and coal powder, first mixes described iron-containing rare earth raw ore and coal powder according to the weight portion of 8.2:1.8 and then joins in a ball mill for ball milling, and the iron-containing rare earth The raw materials and pulverized coal are ball-milled to less than 200 mesh and then exit the ball mill. The ball-to-material ratio of the ball mill is 25:1, and the ball milling time is 19 hours. Then add the binding agent of 1.6% of the total mass of the mixed powder, the additive of 0.5% of the total mass of the mixed powder and the water of 6% of the total mass of the mixed powder in the mixed powder, mix in the mixer; then Transfer the mixed powder after mixing to a pelletizer to make pellets, and obtain mixed pellets after drying; th...
Embodiment 2
[0039] A method for separating and producing rare earth ferrosilicon alloy in a rotary hearth furnace comprises the following steps:
[0040] (1) Raw material processing, the raw material adopts iron-containing rare earth raw ore and coal powder, first mixes described iron-containing rare earth raw ore and coal powder according to the weight portion of 8.5:1.6 and then joins in a ball mill for ball milling, and the iron-containing rare earth The raw materials and pulverized coal are ball-milled to less than 200 mesh and then go out of the ball mill, and then add 2.5% of the total mass of the mixed powder to the binder, 0.5% of the total mass of the mixed powder and 6.2% of the total mass of the mixed powder After mixing the water, mix it in the mixer; then transfer the mixed powder after mixing to the pelletizer to make pellets, and get the mixed pellets after drying; the additive is Na 2 CO 3 . The binder is a mixture of bentonite and soybean powder.
[0041] The coal powd...
Embodiment 3
[0051] A method for separating and producing rare earth ferrosilicon alloy in a rotary hearth furnace comprises the following steps:
[0052] (1) raw material treatment, the raw material adopts iron-containing rare earth raw ore and coal powder, first mixes described iron-containing rare earth raw ore and coal powder according to the weight portion of 8.8:1.5 and then joins in a ball mill for ball milling, and the iron-containing rare earth The raw materials and coal powder are ball-milled to less than 200 mesh and then exit the ball mill. The ball-to-material ratio of the ball mill is 33:1, and the ball milling time is 20 hours.
[0053] Then add the binding agent of 2.6% of the total mass of the mixed powder, the additive of 0.66% of the total mass of the mixed powder and the water of 8% of the total mass of the mixed powder in the mixed powder, mix in the mixer; The moisture content of the mixture in the mixer was 8.1%. Then transfer the mixed powder after mixing to a pell...
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