DEP0041828DA - Process for the selective separation of minerals, chemicals, etc. - Google Patents

Description

Schmidt & Co.

(§) Bahnhofstrasse 35 "^ learn about the selective separation of stones , earth, mining products, chemicals and the like.

Processes are known, according to which mountain pulp products are prepared wet or rock for the purpose of avoiding undesired by-products mengunfjen - such as so-called mountains, by-passages and the like - of the materials to be extracted, such as clay, ores, coal or the like. to crenneri »

These processes fail wherever there are intimate bonds between the substances to be extracted and their admixtures. In order to separate these admixtures, one should preferably use individual five _b and dej. must processing by sludging, foam swimming or the like, these processes require the finest grinding, ITeßauf preparation with rtachfol gencfem drying "and therefore extensive facilities, whereby the end product is significantly taxed.

The method according to the invention avoids this awkward way in that such overgrown products are no longer by finest comminution with a grinding effect, for example in grinding cycles, roller mills or the like. or ground in ball mills, hammer mills, etc. Through experiments, was proven DCSS splinter and dissolve, wooei especially the Y / calibration, older components into smaller particle sizes dissolve and tuirtere components, mostly the admixtures remain großkömiger "and are easier to separate the different admixtures of the final product by short plump like crushing Ib & - -s en ο

The comminution carried out for this purpose is referred to as selective comminution and can be carried out in single or multiple passes through the comminution device. The finer constituents, regardless of whether they are the end product or the constituents to be eliminated, can then be located by means of suitable air sifting devices, locations, filters, etc. split off. By continuously circulating the material between the comminution and the sifting device, the selective comminution and sifting can be carried out in stages in the same or several overall devices. The degree of treatment in the individual stages can be different. This applies, for example, to the number and strength of the blows in the shredding device.

Claims (8)

tung, the number and. the selectivity of the fractions during the sifting, etc. In this way, through the multiple treatment, end products and admixtures with different grain sizes and compositions can be obtained. Experiments have also shown that the individual fractions also have different structural and chemical compositions, so that in the case of coal it is e.g. Of course, some of these products and admixtures can also be mixed with one another again in any desired ratio in order to achieve certain properties of these mixtures. For example, with the process according to the "invention from raw ore by mixing certain fractions, one can produce a ready-ground ore, or a coal that is not suitable for coking, a coal mixture, etc. The practical implementation can" be made in this way achieve that comminution devices with separate comminution elements - chambers or the like. - and similar classifiers with separate separation devices are used, so that several fractions are treated separately in one comminution and classification device. Of course, the comminution and safety devices can also be used separately and connected to one another by suitable conveying means. The devices can be connected to each other with pneumatic conveying devices, with the simultaneous supply of hot air, hot gases or the like, the drying of the feed material is carried out so that the above-described crushing and sifting, if necessary, gradually and selectively - different in the individual stages - at the same time is used for drying, moistening or chemical treatment. The "process" can be expanded by switching on magnets for separation or this is supported by turning ultrasound. The process described can also be combined with the wet process. Proprietary claims: 1. Process for the selective separation of minerals, chemicals ο, the like », characterized in that the material to be treated in shredding devices is briefly plump. Beat dorar ⁴ "is exposed to the fact that it breaks down into components which differ in terms of hardness, type, specific weight and which are separated from one another by air classifiers, sieves, pits or the like 2. The method according to claim 1, characterized in that the material several times through the same shredding and sifting device treatment is sent (step-by-step treatment) " 3. ^r e ^ drive according to claim 1, characterized in that the step-by-step treatment takes place in several devices connected in series, the degree of treatment in the individual steps can be different. 4. The method according to claims 1 to 3, characterized in that a drying, moistening or chemical » see treatment of the goods done. 5p method according to claims 1 to 4, characterized in that the separation and / or separation by magnetic devices or supported by the application of ultrasound, 6. The method according to claims 1 to 5, characterized in that in order to achieve substances of special properties various of the fractions obtained are mixed with one another in certain amounts. 7. Device for performing the method according to claims 1 to 6, characterized in that the crushing devices with several shredding elements, chambers or the like * and also the classifier with separate separation devices are equipped. 8. Device according to claim 7, characterized by the arrangement of pneumatic conveying means, which at the same time for drying " tion, humidification or chemical treatment are used.