SU69627A1 - The method of separation of mixtures of electrically conductive and non-conductive materials, for example, mixtures of metals or their oxides with rock - Google Patents

Description

The proposed method differs from the existing methods of partitioning 11 mixtures in that the mixture is brought into contact with the electrodes, attach .inieiiLL.iMH to the current source so that the particles of electrically conductive materials close the current circuit, weld them last to one of the electrodes and further clean off with the help of scrapers, etc.

The invention is illustrated in the drawing (Fig. 1, 2).

The circuit of FIG. 1 is made up of a source of constant or alternating current, connecting wires 2 and electrodes 3, with a small gap between them.

If metal chips 4 are placed on the electrodes so that the current peaks through it, the chips will be welded to the electrodes.

By properly selecting the voltage and circuit parameters, welding chips to the electrodes can be obtained by fusing a very small amount of the metal chip with the electrode material at the points of contact.

Since the intensity of the welding chips is mild, it will be difficult to push the chips off the electrodes, but at the same time it is easy to remove the scraper.

Using various properties of metals and ber as electrons, for example, iron and cycle., It is possible to obtain strong adhesion of copper shavings to iron and weak to zinc. When moving apart the electrodes, copper chips always hang on the iron electrode, easily separated from zinc.

If the separation scheme is modified and, as shown in FIG. 2, pour the mixture of shavings with sand onto the lower electrode 5, and periodically bring the upper electrode in contact with the mixture, then each time to under:; the welding electrode will weld one or several shavings. Scrub them over collector 4, extract from the mixture

1: em: 1 liter-1-ls particle, 1: 1 pas. 3; ieKrjjo, 4c, ultimately sand alone.

Similarly, electrically conductive Abscherals are applied to electrode 3, for example, N. chritis, pnroluzite, chalcopyrite, lead shine, wolframite, etc.

Electrode -9 removes colored chips or minerals, and they hang on it just as iron chips hang on a magnet.

This external resemblance to a magnet makes it possible to design a variety of different types of continuous apparatus using this method in the same way that the use of a magnet for separation purposes led to the appearance of a greater number of electromagnetic separators.

With the introduction of the proposed method of separation of mixtures, the following npiieMbi are possible:

1. Electrodes are made of the same or different materials.

2. In order to separate different mixtures of electrically conductive materials, a material is used for the electrical wires, with which the particles of one of the components of the mixture weld better than the particles of the other components.

3. Select the polarities of the electrodes in such a way that during the electric discharge the spraying would come at the expense of the material being divided, in order to prevent the surface of the electrodes from being damaged by an electric spark.

4. To carry out the wet separation process, immerse the electrodes in a liquid medium (water, kerosene).

In order to implement the method, a device is proposed, made according to the type of electrical devices (s) with a rotating drum (being an electrode) or drums, characterized in that the distance between the electrodes is chosen smaller than the size of the smallest separated particles. This device provides for the use of a low voltage power source.

A device with a rotating drum and a top feed mixture is shown in FIG. 3. It consists of a feeder 1, a fixed contact plane 2, a metal drum 3, a scraper 4, a collector 5 of a conductive fraction, a collector 6 of a non-conductive fraction, and a transformer 7 or a DC source.

One drive from the current source is connected to the inclined plane 2, and the other through the brush and slip ring to the drum 3.

The drum is told to rotate as indicated by the arrow. There is a gap of about 0.5 mm between the edge of the contact plane and the drum.

Ore mixture or metal waste mixed with sand, slag, etc., comes from the feeder along an inclined plane to the gap between the latter and the drum. This slot is the working area of the separator. Metal bodies or particles of the electrically conductive fraction, touching simultaneously plane 2 and the drum o, close the circuit of the current source, which leads to their freezing to the drum. Using the scraper 4, the particles are scraped off the drum and enter the collection 5.

The non-conductive fraction is discharged into collector 6 by the force of gravity and centrifugal force imparted to it by the drum.

The drum may have a grooved or ribbed surface. It can also be wrapped with metal wire, easily replaceable after wear.

To prevent damage to the edge of the inclined plane 2, as well as to prevent the particles from welding to it, and not to the drum, the edge should be covered. of composite alloys used in electric arc welding.

A device with a doctor; The mixture was supplied on the PPG. four.

The rotating drum 3 is supplied with a HinrroBoii rifled or made in the auger screw.

Under the drum is naklopga contact. plane 2. The mixture to be made of the bhpker / is transformed by the force of its gravity NLP jet liquid.Tii (zods, kerosene) and the projectile but inclined plane into the screw gaps of the screw auger of the drum. Electrically conductive bodies, kosiuvshns drum, pririyvayutsya him at least tsz nz separation zone to the scraper 4, where the scrapery and send to collector 5. Non-conductive bodies unload into collector 6 of the Aclone plane 2 may accompany the oscillatory motion.

If one drum does not provide the need | stepping off the electrical conduction of the electric wire, then it can be carried along with a lot of drums.

A device with two fights; a single drum is shown in FIG. 5. It consists of two drums / n 2, (plyuschpkhs electrodes) attachment: yeny ;; KN: Point 4 of alternate current or alternating current with sliding contact 3-.

The reels are said to spin in different directions. The working gap between nanopumps should be less than the 1x separable electrically conductive particles.

From the feeder 5, a mixture of electrically conducting and non-conducting bodies is loaded into the gap between the rolls:. Osp rolls have some inclination1, providing a progressive translation of the mixture along the slits.

The electrically conductive particles, shorting the current, are applied to the drums and carried from the separation zone to the scrapers 6- (J, where the chains are discharged and unloaded into collectors 8-5.

Non-electrically conductive parts, driven to the front end of private drums, are discharged into the collection of 7 tails.

The drums can be trimmed or screw-cut: one ba 1abap-right, another; -; 1evu1O. In the latter case, 6ai) a6an.-i is detutted like cheeks, i.e., the partition is effected by the longitudinal movement. At the same time: ope, chiiete kontaktnopepehnost, which facilitates the senaratsnyu. On the drum / surface drum, it can be b,: a flat wire is also made: winding (on one right, on the other - left).

By finishing the wire material :: so as to ensure good weldability of one drum from one of the constituent parts of the conductive fraction, and the other drum from the other, it is possible to obtain an selective separation of the concentrate into two products that differ in electrical conduction: 1) tact: affinity :.

To carry out the wet process, the drums are immersed: 1 in an inclined direction: about the environment last (water, kerosene: n) is fed ciBCjxxy, along the bottom, see: 3: wx: i) butt the process.

To separate the thin classes of the product, the wrens are added to the drums; ) position: 1y: o: io; ia3ai: on na. about. seize the drums, but through the slot and the electrically conductive particles are welded: and then, and then;;;; inot :; scrapers. Non-contracted wire: the fraction is discharged at the end of the shelf.

- 3 - LI 69627

PREED MET OF INVENTION

Claims (6)

1. The method of sectioning and mixtures of electrically conductive and non-conductive materials, for example mixtures of metals, of their concentrates with rock; and of P1, and that the mixture is brought into contact with electrodes connected to the current source; so that the particles of electrically conductive materials close the current circuit and weld them last to one of the electrodes and then clean them off with a help of scrapers and so on. 2. Acceptance of the method according to and. 1, characterized in that the electrodes are made of the same or different materials. 3. Acceptance of the method of PP. 1-2, for example, so that, in order to separate mixtures of different electrically conductive materials, for electrodes, a material is used with which the particles of one of the compoopit mixtures are welded better than particles of other components. 4. Acceptance of drying, the method according to paragraphs. 1-3, because of the fact that the polarity of the electrodes is chosen so that during electrical discharge the sputtering takes place due to the material being separated, with the aim of damaging the surface of the electrodes with an electric spark. 5. Device for implementing the method according to claims. 1-4, made in the form of electrostatic separators with a rotating drum or drum, is of a similar nature, since the distance between the electrodamp is chosen to be the smallest separable electrically conductive particles. 6. In the ycTpoiiCTBe according to claim 5, in reference to N1 of a single-source current source. sh. / Ft.2 fM} - yu ) oj, .