Method for preparing aluminum silicon ferroalloy by feeding hollow electrode with waste refractory material as raw material
A technology of waste refractory materials and hollow electrodes, which is applied in the field of electrometallurgy and can solve problems such as resource utilization is still in the research stage
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Embodiment 1
[0042] The method for preparing Al-Si-Fe alloy by using waste refractory material as raw material for hollow electrode feeding comprises the following steps:
[0043] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;
[0044] Step 2, according to the composition of the target aluminum silicon ferroalloy: aluminum content 25%, silicon content 65%, the rest is iron, calcium, titanium and other trace metals, using the fixed carbon contained in the waste cathode carbon block as the reducing agent according to the chemical The metering ratio is used to calculate the mass of waste refractory materials, waste cathode carbon blocks and fly ash required to reduce metal oxides, and finally the mass ratio of waste refractory materials, fly ash and waste cathode carbon blocks is 1:6:4. Put the waste refractory material, waste ca...
Embodiment 2
[0048] The method for preparing Al-Si-Fe alloy by using waste refractory material as raw material for hollow electrode feeding comprises the following steps:
[0049] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;
[0050] Step 2, according to the composition of the target aluminum-silicon-ferroalloy: aluminum content 27%, silicon content 63%, and the rest are iron, calcium, titanium and other trace metals; the fixed carbon contained in the waste cathode carbon block is used as the reducing agent according to the chemical The metering ratio is used to calculate the mass of waste refractories, fly ash and spent cathode carbon blocks required to reduce metal oxides, and the mass ratio of waste refractory materials, fly ash to spent cathode carbon blocks is 1:3:2; Put the refractory material, waste cathode carbon blo...
Embodiment 3
[0054] The method for preparing Al-Si-Fe alloy by using waste refractory material as raw material for hollow electrode feeding comprises the following steps:
[0055] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;
[0056] Step 2, according to the composition of the target aluminum silicon ferroalloy: the aluminum content is 31%, the silicon content is 58%, and the rest is iron, calcium, titanium and other trace metals; the fixed carbon contained in the waste cathode carbon block is used as the reducing agent according to the chemical The metering ratio is used to calculate the mass of waste refractories, fly ash, and spent cathode carbon blocks required to reduce metal oxides, and the mass ratio of waste refractory materials, fly ash to spent cathode carbon blocks is 1:1:1; Put the refractory material, waste cath...
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