| 摘要 |
PURPOSE: Aqueous solution of polyvinylalcohol composite is provided to obtain air-permeability and combustibility by moderately maintaining strength of cokes in a blast furnace, thereby minimizing the generation of rupture capable of being generated during transferring cokes, improving the quality of cokes and the yield of cokes. CONSTITUTION: Aqueous solution of polyvinylalcohol composite comprises polyvinyl alcohol resin as main component, and is manufactured by mixing a surfactant and antiseptic with water. The average saponification rate of polyvinyl alcohol resin is 65-97 mol%, and average polymerization degree is 200-3000. The surfactant is a polyoxyethylene based compound, and the antiseptic is isocyazoline based compound. The polyoxyethylene based surfactant is M-TDE1020, and the isocyazoline based antiseptic is betacide. |
