From 8 to 16 from Monday to Friday you can call, also you can write the email to the general address: info@sevenrefractories.com +4313430164
The most eco-friendly and clean taphole clays on the market
Seven Refractories is a leader in the research and development of environmentally friendly products in this sector. The strategic target in Seven’s product architecture is the engineering of the cleanest taphole clay currently possible by lowering the noxious elements contained in some raw materials.
Seven Refractories taphole clay is the answer to:
Cast rate, corrosion resistance and balancing the taphole wear and the renewal of the “mushroom” are all aspects creating synergy between the user’s demand and the producer’s capability.
Seven taphole clays are designed for any type of mudgun. Their bonding system has an improved temperature threshold preventing hardening in the mudgun barrel and cone.
Special attention is paid to the taphole design and manufacture to ensure stable blast furnace operation and protect the hearth walls.
Facts & Figures
The biggest and most advanced blast furnaces in the world are running on Seven Tap.
To date, more than 50 blast furnaces on four continents have been supplied with Seven’s environmentally friendly taphole clay.
The biggest furnace amounts to 4.400 m3 working volume, the most productive one to over 12.000 tons per day.
Seven takes alternative engineering routes to obtain suitable properties of the binder, in order to guarantee the lowest concentration of potentially carcinogenic compounds such as Polycyclic Aromatic Hydrocarbons (PAH). Consequently, the entire Seven tap product range has a concentration of benzo-α-pyren below 5 ppm (ten times lower than the 50 ppm danger threshold established by the German Ordinance, directly deriving from EU directive 1999/833/EC, and representing the leading guideline among environmental legislations of all EU countries).
Consistent product quality: a constant monitoring of the production process in several of its phases enables Seven to promptly intervene even in case of small deviations from the given targets, and steady verification of the aging with time enables the delivery of the only selected and proved material to the final customer.
Quality controls are carried out regularly in several independent laboratories to certify the lowest concentration of hazardous substances compared to products currently on the market.
All raw materials are selected and tested in our laboratories with utmost accuracy. A barcode system allows for easy and full traceability of each element in our production line.
Since the beginning all THC formulations of Seven Refractories have used only organic substances that do not present any danger/risk to the final user.
✔ Some competitors have been able to reduce the level of PAH under the limit but currently none can match the Seven Tap range
✔ Other producers have continued to use CTP or other form of pitches from fossil sources, especially in markets where environmental issues are not a topic on the environmental and health agenda
✔ According to REACH, none of the SEVEN TAP products are classified as dangerous.
Specific continuous monitoring systems are adopted during long transportation routes. This is essential for a material with high sensitivity to temperature, in order to better evaluate any potential stress the material undergoes during the path from production to delivery at the customer end.
Each Seven taphole clay is packed in sturdy cardboard boxes on wooden pallets, all individually PE wrapped. The packaging is specifically designed to permit stacking of up to 4 pallets, with obvious space-saving benefits in warehouse storage. The box opening system allows for easy ergonomically correct access and handling of the pieces.
| Seven Tap 100 | suitable for small size blast furnace |
| Seven Tap 200 | is engineered for consistent performance in small and medium sizes blast furnaces |
| Seven Tap 300 | a higher of raw materials with high abrasion and corrosion resistance increases the taphole performance and makes it more suitable for medium and large blast furnaces |
| Seven Tap 400 | a high content of SiC, Si3N4 and carbon make the product suitable for big size blast furnace |
| Seven Tap 500 | product based on SiC and Si3N4 engineered to resist to high slag rate production |
| Seven Tap 600 | is the top grade of the range, where high purity raw materials and high content of SiC, Si3N4 and carbon make the product appropriate for big size blast furnace with high productivity |
