Products Description
Silicon is an important semiconductor material and an important industrial raw material for the development of information technology. Nano-silica fume has great potential applications in the fields of ceramic materials, composite materials, catalytic materials, photocells and biomaterials. The spherical metal nano-silicon metal powder with high purity was prepared by evaporation-condensation.
Products parameters
| Silicon powder | Size(mesh) | Chemical Composition % |
| Si Fe Al Ca | ||
| ≥ ≤ | ||
| Chemical silicon powder |
Si-(20-100 mesh) Si-(30-120 mesh) Si-(40-160 mesh) Si-(100-200 mesh) Si-(45-325 mesh) Si-(50-500 mesh) |
99.6 0.2 0.15 0.05 |
| 99.2 0.4 0.2 0.1 | ||
| 99.0 0.4 0.4 0.2 | ||
| 98.5 0.5 0.5 0.3 | ||
| 98.0 0.6 0.5 0.3 | ||
| Silicon powder for refractory | -150 mesh -200 mesh -325 mesh -400 mesh -600mesh |
99.6 0.2 0.15 0.05 |
| 99.2 0.4 0.2 0.1 | ||
| 99.0 0.4 0.4 0.2 | ||
| 98.5 0.5 0.3 0.2 | ||
| 98.0 0.6 0.5 0.3 | ||
| Low-grade | -200 mesh -325 mesh |
95-97 Impurity content≤3.0% |
Products Description
1.Brown corundum, white corundum, SiC, bauxite, silicon metal powder, reactive α-Al_2O_3 powder, SiO_2 powder, spherical asphalt, kyanite, metal aluminum powder as raw materials, silica sol as the binder, the samples were dried at 110 °C× 24 h, 815 °C× 3 h and 1400 °C × 3 h after buried carbon heat treatment, with the help of XRD, SEM and other phases and microstructure analysis of the samples, the effect of kyanite on the properties of Al_2O_3-SiC-C castables was studied. The results show that after heat treatment at 1400°C ×3h, with the increase of kyanite content, the linear change rate of the sample gradually changes from microshrinkage to micro-expansion.
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