The SiO2 content in micro silicon powder is greater than 80wt.% The Al2O3 content is less than 2wt.%. The particle size of small particle stones is less than 5mm, and the amount added is less than 50% of the mass of micro powder. The binder is a mixture of coal tar, coal Zhejiang green, and wood fibers in any ratio. Carbon reducing agents include coke, charcoal, coal, petroleum coke, biomass, or biomass charcoal. The metallurgical furnace is a submerged arc furnace.

The amount of iron containing raw materials added to steel chips, rolled iron sheets, and iron concentrate pellets is adjusted according to product requirements to obtain 70 silicon iron alloy products that comply with the national standard GB/T2272-2009. The external refining process involves removing impurity elements through techniques such as blowing and slagging to obtain alloy products that comply with the national standard GB/T2272-2009.

For example, in actual production, a certain ferroalloy factory adopted this method and successfully transformed the originally discarded micro silicon powder and small particle silica into high-quality 70 silicon ferroalloy. Not only does it reduce production costs, but it also reduces environmental pollution.

In summary, the method of using micro silicon powder and small particle silica to produce 70 silicon ferroalloy balls has opened up a new path for the sustainable development of the ferroalloy industry. We look forward to the wider application and promotion of this technology in the future, bringing more innovation and development opportunities to the entire industry. At the same time, we also hope that relevant scientific researchers can continue to conduct in-depth research, further optimize and improve this production process, and make it play a greater role. Let us witness together the ferroalloy industry moving towards a better future driven by innovative technology.

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