From silica rock to silicon powder, the powder making process acts as a critical bridge linking raw materials and end products. Its quality directly determines the performance of downstream products such as organosilicon, polysilicon and aluminum alloys. Centered on the LM Vertical Roller Mill, SBM delivers full process powder making solutions for the silicon metal industry, covering raw material pre-treatment to finished product refining. With high efficiency, safe, intelligent and eco-friendly advanced grinding technologies, we safeguard the entire silicon metal metallurgy workflow and continuously support Chinese silicon industry in pursuing large scale, intelligent, green and low carbon development.
Silicon metal (industrial grade silicon) is produced by high temperature smelting of silica rock and carbonaceous reducing agents in submerged arc furnaces. Its main silicon content remains stably above 98%. Sitting at the top of the silicon based new material industrial system, it serves as the raw material for organosilicon, polysilicon and alloys, and is known as “the cornerstone of modern industry” and “the king of semiconductors”.
Silicon-metal smelting represents the“first process” of the entire silicon based industrial chain. From ore to end use applications, powder making runs through multiple key nodes across the whole smelting workflow, acting as a core technical variable that determines smelting efficiency and finished product quality. With nearly four decades of in-depth expertise in grinding equipment, SBM delivers full process solutions covering equipment selection and production line design, tailored to the bottlenecks of powder processing in silicon metal smelting.
The carbothermal reduction method serves as the mainstream process for industrial production of silicon metal. Silica rock is precisely proportioned with carbonaceous reducing agents including petroleum coke, cleaned coal and charcoal, then heated inside the electric arc furnace. The electric arc generated by graphite electrodes raises the furnace temperature above 1800℃. Liquid elemental silicon is produced via multi stage gas solid reduction reactions. Subsequent processes such as oxygen enriched refining, casting & cooling, crushing and screening yield finished silicon-metal products in lump or granular form.
Within the complete production chain, powder making is not an independent post processing step. Instead, it is deeply integrated into three key phases: raw material pre-treatment, auxiliary material preparation and finished product deep processing. Particle size accuracy, purity stability and operational safety of powders directly determine submerged arc furnace operating efficiency, maximum product grade and continuous production stability.
SBM addresses the powder processing pain points in silicon metal smelting by delivering a full set integrated solution covering coarse crushing, magnetic separation for impurity removal, high efficiency grinding with LM Vertical Roller Mill, cooling and finished product warehousing, fully empowering the large scale, green and high end upgrading of the silicon metal industry.
In the powder making process of silicon metal smelting, raw materials feature high hardness and strong abrasiveness, with flammable dust and volatile matters. The residue content after grinding and screening shall be precisely controlled. Meanwhile, high end applications impose strict requirements on iron contamination prevention. Conventional grinding equipment can hardly satisfy multiple demands including wear resistance, explosion protection and purity retention, which becomes a technical bottleneck restricting production output.
To tackle the process challenges in deep processing of silicon metal, SBM LM Vertical Roller Mill has undergone special structural optimization. Equipped with high wear resistant alloy components and adopting bed of material grinding principle, it effectively minimizes iron impurity ingress caused by mechanical wear and guarantees finished product purity. Featuring fully sealed negative pressure operation together with multi layer explosion proof protection system, it fully complies with safety production codes, helping enterprises tap into high end silicon powder markets and raise product added value.
Advantages of LM Vertical Roller Mill
Compact Integrated Design: The integrated structure allows outdoor installation, featuring small footprint and low capital investment. It well meets the efficient implementation requirements for capacity expansion and retrofitting of silicon-metal manufacturers.
High efficiency Grinding: Unique roller and table structure coupled with automatic hydraulic pressing device improves grinding efficiency.
Superior Finished Product Quality: Short material residence time inside the mill enables high precision powder making for silicon metal. The produced silicon powder boasts uniform particle size and stable quality, flexibly adapting to particle size requirements of diverse downstream applications.
Safety&Explosion proof Design: Equipped with five level explosion proof safety measures including CO-O2 on-line monitoring and automatic CO2 fire extinguishing system.
Clean & Eco-friendly Performance: The system operates under fully sealed negative pressure. High efficiency pulse jet dust collectors are adopted to reduce dust and noise pollution.
Drawing on nearly four decades of experience in grinding engineering, SBM is capable of conducting mixed grinding tests and safety assessments according to the material characteristics of petroleum coke, anthracite, calcined coke and silicon metal. We deliver full chain EPC services covering raw material grindability testing, process flow design, equipment manufacturing & supply, installation & construction, production ramp up & operation maintenance, and spare parts supply.
Silicon metal (industrial grade silicon) is produced by high temperature smelting of silica rock and carbonaceous reducing agents in submerged arc furnaces. Its main silicon content remains stably above 98%. Sitting at the top of the silicon based new material industrial system, it serves as the raw material for organosilicon, polysilicon and alloys, and is known as “the cornerstone of modern industry” and “the king of semiconductors”.
Silicon-metal smelting represents the“first process” of the entire silicon based industrial chain. From ore to end use applications, powder making runs through multiple key nodes across the whole smelting workflow, acting as a core technical variable that determines smelting efficiency and finished product quality. With nearly four decades of in-depth expertise in grinding equipment, SBM delivers full process solutions covering equipment selection and production line design, tailored to the bottlenecks of powder processing in silicon metal smelting.
The carbothermal reduction method serves as the mainstream process for industrial production of silicon metal. Silica rock is precisely proportioned with carbonaceous reducing agents including petroleum coke, cleaned coal and charcoal, then heated inside the electric arc furnace. The electric arc generated by graphite electrodes raises the furnace temperature above 1800℃. Liquid elemental silicon is produced via multi stage gas solid reduction reactions. Subsequent processes such as oxygen enriched refining, casting & cooling, crushing and screening yield finished silicon-metal products in lump or granular form.
Within the complete production chain, powder making is not an independent post processing step. Instead, it is deeply integrated into three key phases: raw material pre-treatment, auxiliary material preparation and finished product deep processing. Particle size accuracy, purity stability and operational safety of powders directly determine submerged arc furnace operating efficiency, maximum product grade and continuous production stability.
SBM addresses the powder processing pain points in silicon metal smelting by delivering a full set integrated solution covering coarse crushing, magnetic separation for impurity removal, high efficiency grinding with LM Vertical Roller Mill, cooling and finished product warehousing, fully empowering the large scale, green and high end upgrading of the silicon metal industry.
In the powder making process of silicon metal smelting, raw materials feature high hardness and strong abrasiveness, with flammable dust and volatile matters. The residue content after grinding and screening shall be precisely controlled. Meanwhile, high end applications impose strict requirements on iron contamination prevention. Conventional grinding equipment can hardly satisfy multiple demands including wear resistance, explosion protection and purity retention, which becomes a technical bottleneck restricting production output.
To tackle the process challenges in deep processing of silicon metal, SBM LM Vertical Roller Mill has undergone special structural optimization. Equipped with high wear resistant alloy components and adopting bed of material grinding principle, it effectively minimizes iron impurity ingress caused by mechanical wear and guarantees finished product purity. Featuring fully sealed negative pressure operation together with multi layer explosion proof protection system, it fully complies with safety production codes, helping enterprises tap into high end silicon powder markets and raise product added value.
Advantages of LM Vertical Roller Mill
Compact Integrated Design: The integrated structure allows outdoor installation, featuring small footprint and low capital investment. It well meets the efficient implementation requirements for capacity expansion and retrofitting of silicon-metal manufacturers.
High efficiency Grinding: Unique roller and table structure coupled with automatic hydraulic pressing device improves grinding efficiency.
Superior Finished Product Quality: Short material residence time inside the mill enables high precision powder making for silicon metal. The produced silicon powder boasts uniform particle size and stable quality, flexibly adapting to particle size requirements of diverse downstream applications.
Safety&Explosion proof Design: Equipped with five level explosion proof safety measures including CO-O2 on-line monitoring and automatic CO2 fire extinguishing system.
Clean & Eco-friendly Performance: The system operates under fully sealed negative pressure. High efficiency pulse jet dust collectors are adopted to reduce dust and noise pollution.
Drawing on nearly four decades of experience in grinding engineering, SBM is capable of conducting mixed grinding tests and safety assessments according to the material characteristics of petroleum coke, anthracite, calcined coke and silicon metal. We deliver full chain EPC services covering raw material grindability testing, process flow design, equipment manufacturing & supply, installation & construction, production ramp up & operation maintenance, and spare parts supply.
