| 摘要 |
<p>PCT No. PCT/DE81/00047 Sec. 371 Date Nov. 23, 1981 Sec. 102(e) Date Nov. 23, 1981 PCT Filed Mar. 20, 1981 PCT Pub. No. WO81/02747 PCT Pub. Date Oct. 1, 1981.The subject of the invention is a process for igniting a sinter mix composed of a solid fuel and sintering material on a sintering machine in which the sinter mix is passed underneath an ignition kiln with closed end and side walls and a closed hood, whereby hot flue gases are generated in the ignition kiln above the sintering material and these hot flue gases heat and ignite the surface of the sintering material by radiation and convection. A rapid, uniform and economical ignition is thereby attained in that flue gases from one or more approximately stoichiometrically operated burners are introduced into the upper region of the igniting kiln and that gases with an increased oxygen content are introduced into the lower region in such a manner that a kiln atmosphere results which, in the upper region of the igniting hood, is hotter and relatively impoverished in oxygen, while in the lower region it is cooler and relatively oxygen enriched. A further process variant provides an improvement of the ignition procedure by using a thermal insulating hood. Apparatus for carrying out the process is also described.</p> |
