Perlite ore -- unexpaned perlite as covering agent for liquid steel in foundry / casting industry
Perlite covering agent (slag remover) is getting from perlite sand after special process. In production worker scatter perlite covering agent over liquid steel surface and its volume will be expanded 4-30times, meanwhile it has insulation and slag removing characteristic. It takes place of straw ash or asbestos ash for casting industry.
Perlite covering agent special characteristics as follows:
1)good insulation capability, it can keep temperature of liquid steel down 20-30%
2)good collecting slag property, easy for drossing, good for liquid steel purification
3)Reduce environment pollution, improve working condition
4)Cost can reduce about 30% after using perlite covering agent
5)Easy operation
SiO2 73 - 75 Fe2O3 0.6 - 0.9 Al2O3 12 - 14 Na2O 3 - 4.5 K2O 4.9 - 5.8 CaO 0.3 - 0.9 MgO 0.15 - 0.25 H2O (L. O. I. ) 3.5 - 4.5
| Chemical Analysis |
| SiO2 |
68-74% |
| Al2O3 |
9-14% |
| MgO |
0.4-0.9% |
| CaO |
0.8-1.6% |
| Na2O |
2.27-3.9% |
| K2O |
1.67-3.2% |
| H2O |
3.2-5.88% |
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