DE1483150C3 - Process for sintering or other heat treatment of fine-grain materials - Google Patents

Description

3 4

Even more important than making the shape of the surface protector so that it can be moved. For other professional

fils is the size of the area that is deeply formed on the surface, for example in the case of

and which is the later relationship between gas-independent depressions, it may also be necessary

be more permeable, with liquid or solidifying material, the supply of the hot melt discontinuously

rially covered and gas-permeable, uncovered 5 ierlich.

Area determined. It was found that for a "It goes without saying that care should be taken optimal heat transfer, i.e. sufficient that the temperature of the melt when the heat is supplied by the hot melt to practically flow out of the distribution device or sufficiently above each The point of the layer to be treated must be around the solidification point in order to reduce the risk of damage Gas permeability of the entire surface, clogging and approaches to the distribution device this ratio is around 1: 1. In special prevention. In general, therefore, it becomes indispensable In cases, however, the ratio of this can be more, the distribution device with a special or deviate less strongly, so that one has to be provided in the heating. After another suggestion A range from about 6: 1 to 1: 3 is quite conceivable. of the invention it may furthermore be expedient

The distribution of the hot melt over the melt, to reduce its initial depressions on the surface of the material, depends on adding a flux to the melt. Such fluency according to the chosen profile. If you have medium furrows, for example borax and limestone,
In order to increase the gas permeability of the solidified melt corresponding to the number of furrows, one can finally provide branch lines and distribute the total amount of the hot melt or the melt charged with it to these branch lines. hit surface- add a foaming agent, if the grooves are arranged in the transverse direction of the grate due to foam formation or gas development, it is advisable to use the distribution device, for example, COo development, when it hits across the width of the grate or in other hot spots Melt causes a loosening.

Claims (6)

I 483 150 1 2 contains fuel, the grate is located on the grate 1. Process for sintering or other subsequent air suction the incineration heat treatment of fine-grained substances, such as the fuel flow through the mixture of substances Ores, minerals for building materials, ashes, slag- down progresses. ken or wash mountains, with or without ancillary There are still some considerations The fuel was put on stationary or moving, the ignition of the borrowed on the grate Rusting according to the induced draft method, whereby the fabric to be treated or the warmth is spread Ignition or supply of heat by supplying liquid to this substance in such a way that Slag or other at high temperature in that one hot melt on the surface of the Liquid form applied materials under the substance, the amount and temperature of the Utilization of the heat contained therein takes place, cause the melt to give off sufficient heat characterized in that they must. The material that makes up such a melt There is a surface of the substances to be treated for the purpose of 15, can in principle be very different Formation of a suitable bed for the hot nature will be provided this material is to be treated with the melt is designed in a profiled manner. The substance does not cause any undesired compounds 2. The method according to claim 1, thereby received or for the further use of the substance indicates that the formation of a profiled layer does not constitute a disruptive admixture. In general Surface at the task of the 20 to be treated becomes one-this type of ignition or the heat-to-substance on the grate through one with ribs or drove only where it was used for this purpose other projections provided Aufgabevor- material is already present as a hot melt, so z. B. direction, in particular feed roller, takes place. as liquid slag from melting chamber boilers from 3. The method according to claim 1, characterized ge power plants, which can serve to fly ash, the indicates that the formation of a profiled 25 also occurs there and is to be sintered, too Surface after the task of treating-ignite. the fabric on the grate by an additional, It turned out, however, that the application of a with ribs or other projections verse- slag jet in a conventional manner hene roller takes place. Wiping off smoothed mixture surface no 4. The method according to claim 1, characterized in that the ignition or heat transfer to the indicates that after the task of the to be mixture resulted. Rather, the infused flowed acting substance on the grate through a like slag to a dense, gas-impermeable a plow or harrow acting device layer together so that no gas as a heat transfer furrow Depressions are formed. transport medium could be sucked through. Often 5. The method according to any one of claims 1 35 th wide, exposed to slag surfaces to 4, characterized in that the solidification in addition to large uncovered areas, whereby only point of the hot melt due to the addition of insufficient, section-wise ignition or is lowered by fluxes. Heat transfer has been achieved. 6. The method according to any one of claims 1 to eliminate these difficulties proposes to 5, characterized in that the hot 40 invention, on the other hand, the surface of the melt or the treated substances to be treated with this is added to form a suitable surface, a foaming agent, to make the profiled bed for the hot melt, by foaming or gas development, examples the invention can be to different types of play as CO ₂ evolution, perform when striking way. The formation of a profound, hot melt can result in a loosening and a dulled surface both when the substance to be treated with the gas permeability of the solidifying material is applied to the grate and also after the material. the task. In the former case you can Use a feed device, in particular a feed roller, with longitudinal or transverse ribs 50 or other projections is provided. Here the flow of material flows loosely through the feed device onto the grate, so that the desired Forming of the surface without the use of The invention relates to a method for achieving printing.
Sintering or other heat treatment of 55 But also in the event that the formation of the professional fine-grained substances, such as ores, minerals for built-up surfaces is to take place after the task, substances, ashes, slag or silt mountains. there are several options. One of them would be Processes of this kind are used to a great extent behind the actual feeding device catch using the so-called induced draft method by using an additional roller, which in turn comes with guided. This consists in removing the longitudinal or transverse ribs or projections of others to be treated delenden fabric is provided on stationary or movable Ro-Art and trained accordingly most arranged and from top to bottom profiles in the surface to be acted upon Sucks gases through, which produces hot ones. Finally, it is also possible after the Gases either on the surface of the goods or the substance to be treated on the grate be guided or by burning one in 65 by one acting like a plow or a harrow the fuel contained in the material with the device sucked in, which moves relative to the grate, cold or preheated air is created. Uses furrow-like indentations to accommodate the hot one is a substance or a mixture of substances that form a melt.