Method for producing Al-Si-Fe alloy by carbothermal reduction of waste refractory pretreatment
A technology of refractory materials and ferroalloys, applied in the field of electrometallurgy, can solve problems such as resource utilization is still in the research stage, and achieve the effect of easy alloy composition
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Embodiment 1
[0042] The method for preparing the Al-Si-Fe alloy by pretreatment and carbothermic reduction of waste refractories includes the following steps:
[0043] Step 1. According to the composition of the target Al-Si-Fe alloy: 25% aluminum content, 65% silicon content, and the rest are iron, calcium, titanium and other trace metals; the fixed carbon contained in the waste cathode carbon block is used as a reducing agent according to chemical Calculate the mass of waste refractories, fly ash, and waste cathode carbon blocks required to reduce metal oxides by measuring ratio, and obtain a mass ratio of waste refractories, fly ash and waste cathode carbon blocks of 1:6:4; Refractories, waste cathode carbon blocks and dry pulp powder are put into a ball mill in proportion to grind and mix uniformly, and then the mixture is pressed into pellets by a ball press; the amount of dry pulp powder added is the quality of waste refractories and fly ash 6% of sum, pressing pressure 50MPa, pellet di...
Embodiment 2
[0048] The method for preparing the Al-Si-Fe alloy by pretreatment and carbothermic reduction of waste refractories includes the following steps:
[0049] Step 1. According to the composition of the target Al-Si-Fe alloy: 27% aluminum content, 63% silicon content, 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 chemical Calculate the mass of waste refractories, fly ash, and waste cathode carbon blocks required to reduce metal oxides by measuring ratio, and obtain the mass ratio of waste refractories, fly ash and waste cathode carbon blocks as 1:3:2; Refractories, waste cathode carbon blocks and dry pulp powder are put into a ball mill to grind and mix uniformly, and then the mixture is pressed into pellets by a ball press; the amount of dry pulp powder added is the quality of waste refractories and fly ash 8% of sum, pressing pressure 100MPa, pellet diameter 40...
Embodiment 3
[0054] The method for preparing Al-Silicon-Fe alloy by carbothermic reduction of waste refractory material pretreatment includes the following steps:
[0055] Step 1. According to the composition of the target Al-Si-Fe alloy: 31% aluminum content, 58% silicon content, 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 chemical Calculate the mass of waste refractories, fly ash, and waste cathode carbon blocks required to reduce metal oxides by metering ratio, and obtain a mass ratio of waste refractories, fly ash and waste cathode carbon blocks of 1:1:1; Refractories, waste cathode carbon blocks and dry pulp powder are put into a ball mill to grind and mix uniformly, and then the mixture is pressed into pellets by a ball press; the amount of dry pulp powder added is the quality of waste refractories and fly ash 10% of sum, pressing pressure 150MPa, pellet diameter 30mm...
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