Best price of 50-100cm silicon metal 3303 2202 silicon metal 553
grade metallic silicon
Metallic Silicon Production Process
Metallic silicon, also known as industrial silicon or crystalline
silicon, is commonly produced in an electric furnace by the
reduction of silicon dioxide with carbon. Its main uses are as an
additive in non-ferrous alloys and as a starting material for the
production of semiconductor silicon and organic silicon.
In China, metallic silicon is typically classified according to the
content of its three main impurities: iron, aluminum, and calcium.
Depending on the percentage content of these elements in metallic
silicon, it can be divided into different grades such as 553, 441,
411, 421, 3303, 3305, 2202, 2502, 1501, and 1101.
Metallic Silicon Production Process
The production of metallic silicon employs the carbothermal method,
which involves smelting quartzite and carbonaceous reducing agents
in an arc furnace. The silicon produced by this method has a purity
of 97% to 98%, which is generally suitable for metallurgical
purposes. If a higher grade of silicon is required, further
refining to remove impurities is necessary to achieve a purity of
99.7% to 99.8%.
The smelting of metallic silicon from quartz sand includes several
steps: the preparation of quartz sand blocks, the preparation of
furnace charges, and the smelting process in an arc furnace.
Generally, high-quality quartz sand is directly used for the
production of high-grade quartz glass products, or even processed
into gemstone-level products such as quartz crystals and
tourmaline. Quartz sand of slightly lower grade but with larger
reserves, easier mining conditions, and cheaper surrounding
electricity is suitable for the production of metallic silicon.
Currently, the production process of metallic silicon in China
using the carbothermal method generally involves using quartzite as
the raw material, with petroleum coke, charcoal, wood chips, and
low-ash coal as reducing agents. The smelting takes place in an
electric arc furnace at high temperatures to reduce metallic
silicon from the quartzite. This is a slag-free smelting process
with a buried arc at high temperatures.
Silicon Metal Specification
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 | – |
Silicon metal powder is made of Silicon lumps by crushing, seiving,
washing process etc. We have different grades of Si content powder,
and we have different Si powder crushing and sieving processes to
adapt to different applications of silicon powder.
Normal size: 180 mesh -325 mesh, 200 mesh, 325 mesh, 800 mesh, etc.
Packing & Delivery
Packing: 1 ton big bag, 20-25mt in 20' container
Company Profile
ZHENAN has been in the business of ferroalloy for 30 years now. It
is a leading manufacturer and supplier of ferro silicon,silicon
manganese,silicon metal,silicon carbide,high carbon silicon and so
on.our company is a large-sized production enterprise integrating
research, development, production and sales.
FAQ
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is
25-45 days if the goods are not in stock, it is according to
quantity.
Q:Can we get the some samples?Any charges?
A: Yes , we could offer the sample for free charge but do not pay
the cost of freight .
Q: What is your terms of payment ?
A: 30% T/T deposit , 70% balance by T/T or L/C before shippment.
Q:Why did lots of customers choose us?
An: Stable quality, high efficient reply, very professional and
experienced sales service.
