Steel slag recycling and utilization method
A steel slag recovery and steel slag technology, applied in the direction of improving process efficiency, etc., can solve the problems of incomplete separation, harsh industrial production, slow cooling speed, etc., and achieve the effects of low cost, favorable recycling, and improved grade
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Embodiment 1
[0014] A method for recycling steel slag. Steel slag is added as a raw material to sintering, ironmaking or steelmaking processes as a flux in a certain proportion. It is characterized in that steel slag is dephosphorized by flotation and then added to sintering, ironmaking Or in the steelmaking process; the specific process of dephosphorizing steel slag by flotation includes the following steps performed in sequence:
[0015] 1) The preparation of magnetically separated steel slag powder, that is, the steel slag is treated by hot splashing method, hot stuffing method or drum method to promote the separation of metallic iron and slag in the steel slag, and then multi-stage crushing and magnetic separation to obtain the powder with a particle size of less than 10mm. Magnetic separation of steel slag powder;
[0016] 2) Grinding of magnetically separated steel slag powder, that is, finely grinding the magnetically separated steel slag powder in a ball mill to pass through a 200 ...
Embodiment 2
[0018] A method for recycling steel slag. Steel slag is added as a raw material to sintering, ironmaking or steelmaking processes as a flux in a certain proportion. It is characterized in that steel slag is dephosphorized by flotation and then added to sintering, ironmaking Or in the steelmaking process; the specific process of dephosphorizing steel slag by flotation includes the following steps performed in sequence:
[0019] 1) The preparation of magnetically separated steel slag powder, that is, the steel slag is treated by hot splashing method, hot stuffing method or drum method to promote the separation of metallic iron and slag in the steel slag, and then multi-stage crushing and magnetic separation to obtain the powder with a particle size of less than 10mm. Magnetic separation of steel slag powder;
[0020] 2) Grinding of magnetically separated steel slag powder, that is, finely grinding the magnetically separated steel slag powder in a ball mill to pass through a 200 ...
Embodiment 3
[0022] A method for recycling steel slag. Steel slag is added as a raw material to sintering, ironmaking or steelmaking processes as a flux in a certain proportion. It is characterized in that steel slag is dephosphorized by flotation and then added to sintering, ironmaking Or in the steelmaking process; the specific process of dephosphorizing steel slag by flotation includes the following steps performed in sequence:
[0023] 1) The preparation of magnetically separated steel slag powder, that is, the steel slag is treated by hot splashing method, hot stuffing method or drum method to promote the separation of metallic iron and slag in the steel slag, and then multi-stage crushing and magnetic separation to obtain the powder with a particle size of less than 10mm. Magnetic separation of steel slag powder;
[0024] 2) Grinding of magnetically separated steel slag powder, that is, finely grinding the magnetically separated steel slag powder in a ball mill to pass through a 200-...
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