APPLICATION
Dispersit® is a new method of metallurgical purification of molten iron. Dispersit® reduces the surface tension of the molten metal and assists the coagulation of foreign particles or reaction products, which can thus rise at an accelerated rate. In addition, Dispersit® reduces the formation of reaction product (slag) deposits on the treatment ladle, pouring ladle and pouring furnace lining. When using Disper- sit®, the addition of alloys containing Mg can be reduced during the production of cast iron with nodular graphite. For example, 1 kg Dispersit® is generally a substi- tute for 1 – 2 kg of a 5% FeSiMg alloy; there are corresponding empirical values when using other FeSiMg alloys. The use of Dispersit® is often successful in re- ducing the scrap rate caused by dross and inclusions by over 50%.
REFERENCE ANALYSIS
| % Si | 36 – 43 |
| % Mg | 4,0 – 7,0 |
| % Cer-MM | 1,5 – 3,5 |
| % Ca | 8,0 – 12,0 |
| % Fe + [F] | Residual |
ADDITION RATE
Magnesium treatment
We recommend adding 0.1% (e.g. 1 kg/t iron) Dispersit® together with the FeSiMg (the amount of FeSiMg must be reduced correspondingly). Dispersit® is packed in bags and can therefore be used without additional weighing in most cases.
Inoculation
Dispersit® can also be added to the molten metal mixed with a conventional inocu- lant or special inoculant (e.g. VP 216, SB 5) when filling the casting ladle: Addition of approx. 10% of the inoculant.
SIZING
0 – 1,6 mm
PACKAGING
Plastic bags each 0.5 kg or 1.0 kg, packed in steel drum net 100 kg.
SHELF LIFE AND TRANSPORT
Dispersit® can be stored indefinitely in its original packaging. The effects of humidity are to be avoided. Relevant hazardous substance regulations must be complied with. Our Shipment Handling department can provide further information. Dispersit® is not a hazardous substance as defined by transport regulations.
