| 摘要 |
A cooling system for devices utilized with a melting furnace for producing mineral wool including tapholes (10), troughs (110) and spinners (210) provides protection from wear of such devices. The system allows a film of solid material of predictable, constant thickness to freeze on the working surface (20) of the device. Each device is comprised of a copper shell (14) and includes a coolant guide (16) having a surface which is closely spaced from the nonworking surface of the device to from a highly restrictive, narrow flow passage therebetween. A liquid coolant is supplied to the passage where the velocity of the same is made to accelerate to an ultrahigh velocity of at least 10 feet per second across the inner surface of the shell to thereby sweep away steam generated upon the surface. |
