Industrial silicon furnace Industrial silicon, also known as crystalline silicon. The main use of industrial silicon is as an additive for non-ferrous alloys. Industrial silicon is also used as an alloying agent for strict requirements of silicon steel, as well as a deoxidizer for smelting special steel grades and non-ferrous alloys. After a series of industrial processes, industrial silicon can be processed into single crystal silicon for use in the electronics industry.

    Industrial silicon is widely used in the preparation of alloys, the production of high-purity semiconductor materials, the production of solar cells, the production of temperature resistant materials, and organic silicon. In today's society, it has entered the era of informatization and has been widely used in scientific research, as well as various fields such as electrical, aviation, machinery, chemical, pharmaceutical, and national defense in industrialized countries.

    Industrial silicon production is a high energy consuming industry, with an average consumption of over 13000 kWh of electricity per ton of industrial silicon. The national annual production of 1 million tons of industrial silicon requires over 1.3 billion kWh. However, the advanced level of foreign countries consumes 11000 kWh of silicon per ton, and China's industrial silicon electricity consumption is 10-20% higher than the advanced level abroad, indicating a great potential for energy conservation.

    The high energy consumption in China's industrial silicon production is mainly due to unreasonable design, low control and management levels.

    Unreasonable design is reflected in many details such as the widespread use of small furnaces around 6300KVA in China (with high heat dissipation and low output), inadequate insulation measures in furnace design, unreasonable circuit design, and unreasonable size of pole circles.

    From the perspective of professional furnace design and manufacturing manufacturers, the main ways we are currently considering to save energy in industrial silicon production are:

1) The direction of large-scale furnace design;

2) Sealing direction of furnace type;

3) Direction of waste heat utilization;

4) Measures to improve the electrical efficiency of the furnace include improving the design of the short network structure, enhancing the performance of transformers, improving electrical parameters, and adopting low-frequency power sources;

5) Improve the thermal efficiency of the furnace;

6) Change the reaction mechanism inside the furnace;

7) Change the direction of raw material performance;

8) Adopting automatic direction control;

9) Direction of management system construction.

    After years of exploration and discussion, the average electrical efficiency of industrial silicon arc furnaces in China is currently over 92%. Our company is also relatively mature in various technologies or measures to improve electrical efficiency, such as improving the design of short network structures, using high-quality conductive materials, adopting low-voltage compensation technology, and improving electrical parameters. However, the thermal efficiency of industrial silicon arc furnaces in China is generally low, which is the main reason for the high energy consumption and low energy utilization efficiency in industrial silicon production.

    At present, our company has a lot of experience and significant advantages in the research of large-scale furnace types, closed furnace types, waste heat utilization, and insulation design technology.