How to melt silicon metal?
Silicon metal is an important inorganic compound with a wide range of applications, including semiconductor industry, solar cells, chemical industry, etc. Melting silicon metal is an important step in the preparation of silicon metal products. Let's talk about the smelting process of silicon metal.
| Garde | Composition | ||||
| Si Content (%) | Impurities (%) | ||||
| Fe | Al | Ca | P | ||
| Silicon Metal 1501 | 99.69 | 0.15 | 0.15 | 0.01 | ≤0.004% |
| Silicon Metal 1502 | 99.68 | 0.15 | 0.15 | 0.02 | ≤0.004% |
| Silicon Metal 1101 | 99.79 | 0.1 | 0.1 | 0.01 | ≤0.004% |
| Silicon Metal 2202 | 99.58 | 0.2 | 0.2 | 0.02 | ≤0.004% |
| Silicon Metal 2502 | 99.48 | 0.25 | 0.25 | 0.02 | ≤0.004% |
| Silicon Metal 3303 | 99.37 | 0.3 | 0.3 | 0.03 | ≤0.005% |
| Silicon Metal 411 | 99.4 | 0.4 | 0.1 | 0.1 | ≤0.005% |
| Silicon Metal 421 | 99.3 | 0.4 | 0.2 | 0.1 | – |
| Silicon Metal 441 | 99.1 | 0.4 | 0.4 | 0.1 | – |
| Silicon Metal 551 | 98.9 | 0.5 | 0.5 | 0.1 | – |
| Silicon Metal 553 | 98.7 | 0.5 | 0.5 | 0.3 | – |
| Off-Grade Silicon Metal | 96 | 2 | 1 | 1 | – |
Specification granularity: natural block, 10-100mm, 10-60mm, 3-10mm, 1-3mm, 0-1mm, or customized according to customer requirements.
Packaging: Ton bag packaging (1000kg/bag) or customized according to customer requirements.
Silicon metal is mainly derived from silicon dioxide ore, and its main component is silicon dioxide. The process of smelting Silicon Metal is mainly divided into two stages: pretreatment before smelting and smelting process.
Pretreatment before smelting includes steps such as crushing, leaching and purification of ore. First, the ore is crushed by crushing equipment to make its particle size meet the smelting requirements.
Then, silicon dioxide is extracted from the ore by chemical leaching. During the extraction process, acid is needed to dissolve metal impurities and other impurities from the ore for the subsequent purification process of Silicon Metal.
Finally, the residual impurities are removed through the purification process so that the silicon dioxide obtained in the ore meets the smelting requirements. After the ore pretreatment is completed, the smelting process of Silicon Metal can be carried out.
The smelting process of Silicon Metal usually adopts the melting reduction method. In the smelting process, the electric smelting method is generally used, that is, the smelting is carried out by arc heating. First, the pretreated ore and the reducing agent are placed in the smelting furnace, and a certain arc is established in the furnace. Under the high temperature of the arc, the ore and the reducing agent react chemically in the furnace to generate Silicon Metal.
At the same time, arc heating can also help to melt the ore, so that the generated Silicon Metal can flow out of the furnace smoothly. During the smelting process, it is also necessary to control parameters such as temperature and furnace atmosphere to ensure the smooth smelting process of Silicon Metal.
In addition, the output Silicon Metal needs to be subjected to relevant subsequent treatment, including cooling, solidification, crushing, screening and packaging. In general, the smelting process of Silicon Metal is a complex chemical reaction process that requires strict control and operation.
Through reasonable ore pretreatment and smelting process, high-purity Silicon Metal can be obtained to meet the needs of different application fields. With the continuous improvement of technology, the smelting process of Silicon Metal will also be continuously optimized to provide better material support for the development of related industries.