DD148189A1 - METHOD AND DEVICE FOR RAW AND WORKER TOOL PREPARATION - Google Patents

Abstract

The invention includes a new process and the basic features of a device for the combined comminution, classification and drying of building materials, fuels, ores, food and feed. It aims to reduce material, space and effort for the treatment plant. This consists of a hollow body in which balls or similar Mahlkoerper controlled between magnetic poles commute and comminuting u in one operation. at the same time classifying. The millbase is driven by a Abwaemestrom through the ball field and dried at the same time.

Description

1 1 365 -i

a) Title of the invention

Method and device for processing raw materials

b) Field of application of the invention

, The invention relates to a method or a combination of methods _e and corresponding devices for the treatment of raw and finished materials, such. B, coal, especially wet lignite, building materials such as lime, silicates and the like, particularly permeated with moisture, and corresponding ores, Z ₆ B _e lawn iron ore, but it can also be used for dry materials. The invention combines the three processes of comminution, classification, drying and, for this purpose, incorporates principles of action which are not customary in this context.

c) Characteristic of the known technical solutions

For the technical utilization of raw materials and materials is usually the result of several processes, z "B ₀ a crushing, also a classification and often also a drying necessary. Examples of these are the lignite enriched with water content up to about 60 % , certain deposits of lime, silicates, ζ _β Β _β encrusted moist sand or _e gravel masses, also called fur iron ores

The utilization of the extracted lignite for the production of briquettes or · for dust firing must be carried out by Zexrklei-

beautification precede * hitherto preferably done with hammer mills "this stage classification includes by screening to" Thereafter, the thus treated lignite to lower water content, usually less than 20% _t-dried z _e B ₀ in so-called plate dryers or in tube dryers. There are also fire-gas dryers used «

In building materials and ores, the process steps are analogous and device similar in principle, although the goal of building material processing, the production of high quality capable of binding agent or mixture "components for the formation of stones ^ Baufertigtei" len and possibly _β Beliefs and high "or civil engineering objects is "

The goal of mineral processing is their preparation for fusion for metal extraction and processing 6

There are already hammer mills with which sieves are directly coupled or connected in an aggregate, but separate sieves of different mesh widths are often made of metal wire or, more recently, of rubber or polyurethane material. Both mills and sieves are subject to wear Both by contact or friction with the raw material ₉ and by bearing friction and other factors _β The arrangement of mills, screens and dryers, all of which have considerable dimensions in large-scale installations, requires appropriate space and enclosed space * The cost of materials for the devices themselves is naturally also large

d) Object of the invention

The aim and purpose of the invention is a principle solution for saving on equipment and material costs as well as factory space saving _s so a significant improvement in the material economy ι also simplify the Gesamtproaesses processing "

365

By combining the hitherto predominantly independent chopping, classifying and drying processes, the design work for processing processes and plants as well as for the design and manufacture of the devices or equipment parts is minimized.

Waste heat can be used to reduce energy consumption »

e) Presentation of the essence of the invention

The raw material or material to be processed is passed through a hollow body, which has on opposite sides each one positive and one negative magnetic pole or a row or chain of such poles. In the interior of the hollow body are magnetizable moldings, preferably balls, which are freely movable.

By -. Preferably, automated - change circuit of the magnetic field in the V / iron that the opposing poles in the hollow body in an adequate frequency swapped v / ground, a jumping and jumping or jumping back and forth of the balls in the hollow body forced »This is the raw material according to the einjustierten frequency of the balls in the magnetic field of these smashed and sieved at the same time, since the haunting "ball rain" transverse to the flow direction of the hot air and thus the reprocessed Roh- or _e material has the dual function of hammer and sieve »The dimensions of the system and its components and other operating data are, of course for the respective raw material and _e respectively for the desired flow rate to calculate each and optimize "

f) embodiment

The invention will be illustrated by the example of the treatment of lignite, by

their structure and high capillarity bound moisture probably covers the most difficult problems among the named raw materials and their preparation for the GDR as the largest lignite producer among the states of the earth has great economic importance. "

The coarse schematic »serves to illustrate not maßstäblichej drawing figure 1 and 2 * In the drawing, numeral 1, left _arrow}" means the supply of the raw coal and reprocessed paragraph 2, the hot air which z. B ₆ by means of a nozzle assembly the required Strömungsdruck'erhält »-The numbers 3 * 4- and 5 represent the walls of a hollow body, which may be square or cylindrical or similar shaped, through which the raw coal 1 and the driving and drying hot air 2 passed · 4 and 5 are at the same time the magnetic poles (or pole rows or _e pile warp) that are connected by suitable, per se known devices alternately positive and negative *

Numeral 6 represents freely movable magnetizable body, preferably steel balls or steel jacketed body is, for _e B * those which are filled inside with feinstkornigem and thereby magnetically highly effective ferrite _e

Are the magnetic poles switched in a suitable time sequence? so 6 commute the steel balls with appropriate frequency between 4 and 5 up and down or in lateral position of the hollow body, back and forth _e They act as Ham '· mer and in their sum at the same time as a sieve, "The raw coal 1 is produced by the shower of balls , by the mutual impact effect of the balls 6, smashed to any desired and an applied grain and dried in the advancing hot air stream 2 at least but pre-dried The delivery can be designed by extension so that the desired drying is achieved »

η! into MO / (VV π Η U '"J Ii \

The degree of decomposition of the raw coal 1 can be controlled by the frequency of the steel balls 6, that is by the speed, the magnetic polarity reversal and by the magnetic field strength

 Paragraph 7 indicates the disposal of the processed material and the compressed air used ·

In intermediate stages of the hollow body, the separate separation of different grain sizes is possible

 The idea of the invention comprises all expedient conceivable forms of hollow bodies as well as of bodies for the fragmentation or comminution of the respective material, in the example for the preparation of the raw coal. The size of the space of the hollow body and the size and number of balls or body 6 is the requirements vary accordingly constructed. The magnet system can be resolved into 2, 3 or more magnetic pole pairs 4, 5.

The use of exhaust air and its multiple use in the circulation process with or without reheating

or with subsequent night-drying section

conceivable and feasible. The method can therefore be optimized with regard to the economical use of energy.

Claims (4)

claim 1) Process for the preparation of raw materials and materials, characterized in that in a hollow body (3, 4, 5) »with the supply and with output port or its more for solid and gaseous substances (1, 2), iron or _e steel balls (6) or other magnetizable body (6) by magnets (4 _S 5) i ⁿ adequate rate up and down or "at the transverse position of the hollow body (3» 4, 5) t are reciprocated in such a way that they act as a hammer and thus as a comminuting tool as well as by their number and frequency of movement as a screen for Eoh and / or "materials (1) which are forcibly driven through the hollow body (3j 4, 5) towards the exit opening (7)", 2) Method according to item 1, characterized in that as means for the compulsory carry out of the Eoh- or "material it (1) through the hollow body (3 ₉ 4, 5) and thus by the crushing and sieving ball rain (6) Compressed air (2), preferably hot air (2), is used, for example, by upstream of a nozzle assembly _o 3) Method according to item 1 and 2, characterized in that used as a compressive force (2) or * as drying hot air (2) exhaust air and thus waste heat and their residual heat energy is used * 4) Device according to items 1 to 3? characterized in that the shape, the diameter and the length of the hollow body (3? 4, 5) and the number and arrangement of the magnets (4, 5) and the Beraessung the requirements of the respective Kahlgutart- and quantity is varied optimally, in the simplest case an extension is carried out by stringing together similar hollow bodies together with magnetic pole pairs «