초록 ▼

Methods and equipment are disclosed for production of mineral fibers, by attenuation, involving the use of a substantial volume of gas, in which water is also employed at least in a fiber binder, the methods and equipment providing for recirculation of most of the gases, and preferably also of the w

Methods and equipment are disclosed for production of mineral fibers, by attenuation, involving the use of a substantial volume of gas, in which water is also employed at least in a fiber binder, the methods and equipment providing for recirculation of most of the gases, and preferably also of the water employed in the system. Both the gases and the water are purified and the pollutants are separated and are also treated to convert the pollutant constituents to a form not ecologically objectionable for disposal. The methods and equipment also minimize discharge of fluids and aural efflux from the plant. Methods and apparatus are also disclosed for controlling and stabilizing various operating conditions of the fiberization; such as the temperature and the pressure in the fiber forming section or chamber.

대표청구항 ▼

Apparatus for forming fibrous mats from thermoplastic mineral material comprising a chamber having a perforated fiber collecting conveyor at the bottom, gas blast fiber attenuation means in the region of the top of the chamber arranged to direct a fiber-laden gaseous current in a path in the chamber

Apparatus for forming fibrous mats from thermoplastic mineral material comprising a chamber having a perforated fiber collecting conveyor at the bottom, gas blast fiber attenuation means in the region of the top of the chamber arranged to direct a fiber-laden gaseous current in a path in the chamber extended downwardly toward the fiber collecting conveyor, suction means below the conveyor for drawing gases through the conveyor and thereby building up a mat of fibers on the conveyor, gas circulating ducting receiving the gases from the suction means, the ducting being arranged to deliver the circulating gases laterally into the chamber in a region in said path directed transversely toward the downwardly directed fiber-laden gaseous current, and a tubular shield surrounding the downwardly directed current in said region of the transversely directed path of the recirculating gases.