RU2189862C2 - Combination unit for classification and concentration of minerals - Google Patents

Abstract

FIELD: extraction of minerals including extraction of minerals in rivers and water basins. SUBSTANCE: proposed unit has reservoir at hydraulic loading and unloading which is divided by several transversal partitions into at least three settling and concentrating chambers and inlet branch pipe for pulp received from dredge pump. Proposed unit is provided with branch pipe for delivery of flushing water; bin-type hold of barge is used as reservoir; pulp intake branch pipe terminates in diffuser. Partitions are double-type in construction. Intake branch pipe with diffuser mounted on barge is separated from chamber by transverse bulkhead fitted at distance of 0.6 to 1.2 m from design aft bulkhead of hold; its height from level of coaming is equal to 0.7-0.9 of height of hold. First double bulkheads are watertight their height above bottom of hold is lesser than height of upper edge of hold coaming by 0.1-0.2 mm and height of each subsequent bulkhead is lesser than height of previous one by the same amount. Second double bulkheads are fitted at distance of 0.6 - 1.2 m from first ones and their height is equal to 0.17- 0.9 of height of hold; their tops are fitted at height of hold coaming. Height of hold coaming in area of last settling-and- concentrating chamber is equal to height of last watertight bulkhead or it is below it by 0.1-1.2 m. Provided in lower portion of watertight bulkheads are bulkhead slide valves. Branch pipes for supply of flushing water are fitted in lower portion of settling-and concentrating chambers in way of pulp flow: at least two branch pipes per chamber. EFFECT: enhanced efficiency flushing. 7 cl, 2 dwg

Description

 The invention relates to the extraction of minerals, in particular to the extraction of minerals on rivers and ponds.

 It is known that various devices are used for classification and enrichment.

 Gravity classifiers, enrichment machines [1], flushing towers with airlift installations [2] can be named as analogues. The device contains containers with relative movement of the extracted material or pulp and liquid. As a result of the working process, the enriched material under the influence of gravity settles in the lower part of the tank, and contaminated water with fine particles merges in the upper part of the tank.

 In the washing towers, the washed and enriched extracted material deposited in the lower part of the tank is airlift fed to the deaeration chamber and then to the dewatering elevator. The disadvantages of analogues include the insufficient degree of flushing and the difficulty in providing a large amount of flushing water and the need to create slurry ponds for settling water before dumping it into water bodies or before returning to the technological scheme.

 Known hydroclassifier containing a tank, a diffuser, an enrichment chamber, nozzles for supplying washing water, a soil receiver installed in the lower part for the extracted material of a large fraction. The fine fraction is removed from the classifier through the drain collector located in the upper part.

 The source material in the hydroclassifier should be supplied in the form of a hydraulic mixture. Therefore, they are often used to work in conjunction with a suction pump [3].

 The disadvantages of the hydroclassifier include insufficient grading - 2 fractions. The installation of a large hydroclassifier with a height of 10-12 m and more significantly reduces the stability of the vessel on which it is located, in case of operation in combination with a suction pump, and usually no more than one hydroclassifier is located on the vessel.

 Closest to the proposed is a device for the enrichment and classification of minerals mined in rivers and ponds, containing a tank with hydraulic loading and unloading, divided by several transverse bulkheads into at least three settling and enrichment chambers, a receiving pipe for pulp coming from dredger [4].

 The disadvantage of this device is the incomplete extraction of a useful component.

 The objective of the invention is to increase the degree of extraction of the useful component.

 The technical result is an increase in the degree of washing.

 The technical result is achieved in that a device for the enrichment and classification of minerals extracted on rivers and ponds, containing a container with hydraulic loading and unloading, divided by several transverse bulkheads into at least three settling and enrichment chambers, a receiving pipe for the pulp coming from a dredger, equipped with a nozzle for supplying washing water, while a bunker-type hold barge with coaming (fencing) for transporting sand was used as a container, a receiving nozzle for I pulp coming from the dredger ends with a diffuser, and the partitions are double.

 The receiving branch pipe with a diffuser mounted on the barge can be separated from the chamber by a transverse bulkhead installed at a distance of 0.6-1.2 m from the design stern bulkhead of the hold and having a height from the hold coaming level of 0.7-0.9 of the hold height. The first of the double bulkheads in the general direction of the flow of pulp can be waterproof and have a height from the bottom of the hold of 0.1-0.2 m less than the height of the upper edge of the coaming of the hold, and the height of each subsequent may be less than the height of the previous one by the same amount.

 The second of the twin bulkheads can be installed at a distance of 0.6-1.2 m from the first and can have a height of 0.7-0.9 of the height of the hold, while their upper part is installed at the height of the coaming of the hold.

 The hold coaming in the area of the last settling and enrichment chamber may have a height at the level of the height of the last waterproof bulkhead or lower by 0.1-0.2 m.

 In watertight bulkheads, bulkhead clinkets can be installed at the bottom.

 Pipes for supplying washing water can be installed in the lower part of the settling and enrichment chambers in the direction of the total pulp stream in an amount of at least two per settling and enrichment chamber.

 To keep the barge in the “even keel” position, the barge is equipped with ballast tanks and a ballast system.

 A combined device for washing and enriching fossil materials is illustrated in figure 1 and figure 2.

 Figure 1 shows a longitudinal section of the proposed device.

 In Fig.2 placed cross-sections along the settling and enrichment chambers.

 The device comprises a hull of a bunker-type barge for transporting sand 1, a receiving pipe 2 for pulp coming from a dredger, ending with a diffuser, the first of the double bulkheads 3, the second of the double bulkheads 4, settling and enrichment chambers 5, pipes for flushing water 6, pressure head pipe pipeline 7, coaming (fencing) of the hold 8, coaming (fencing) of the last settling and enrichment chamber 9, bulkhead clinkets 10, ballast tanks 11, ballast system 12, drain trough 13 with a branch pipe for organized drainage amputated fluid.

 The device operates as follows. For the period of flooding of the device with water, the bulkhead clinkets 10 are opened, the water supply from the dredge pump through the nozzles 2 and the flushing water supply through the nozzles 6 and the pressure pipe 7 are turned on. After filling the settling and enrichment chambers to the level of the transverse bulkheads, the bulkhead clinkets 10 are gradually closed, preventing excess trim on the aft end. Installation and holding the vessel in the “even keel” position is achieved by receiving ballast in the ballast tanks 11. The established classification and enrichment regime starts from the moment the pulp is fed through the inlet pipe and the space between the double transverse bulkheads ends when the settling and enrichment chambers are filled with fossil materials . After that, the barge is discharged for unloading by known methods and further processing of enriched fractions of fossil materials.

 Clouded water from the drain troughs is discharged by known methods, for example using a pump and a floating pipeline, to a designated place.

Sources of information
1. Directory of mining and processing of non-metallic building materials, Edited by V.L. Valnochinicha. Publishing house of construction literature. L., 1985 (p. 241; p. 243-245, fig. 74; p. 257).

 2. Flushing and deslaming of minerals. M .: Nedra, 1988 (p. 192; Fig. 7.13).

 3. Port equipment for the extraction and unloading of non-metallic building materials. M., the publishing house "Transport", 1985 (p. 87-89).

 4. US patent 3950030, CL 63 V 35/28, publ. 04/13/1976.

Claims (7)

 1. A device for the enrichment and classification of minerals extracted on rivers and ponds, containing a tank with hydraulic loading and unloading, divided by several transverse bulkheads into at least 3 settling and enrichment chambers, a receiving pipe for pulp coming from the dredger, characterized the fact that it is equipped with a nozzle for supplying washing water, while a bunker-type hold barge with coaming for transporting sand, a receiving nozzle for pulp coming from the earth is used as a tank and terminates the diffuser, and made double bulkhead.  2. The device according to p. 1, characterized in that the receiving pipe with a diffuser mounted on the barge is separated from the chamber by a transverse bulkhead installed at a distance of 0.6-1.2 m from the design stern bulkhead of the hold and having a height from the level of the hold coaming 0.7-0.9 hold height.  3. The device according to any one of paragraphs. 1 and 2, characterized in that the first of the double bulkheads in the general direction of flow of the pulp are waterproof and have a height from the bottom of the hold of 0.1-0.2 m less than the height of the upper edge of the coaming of the hold, and the height of each subsequent is less than the height of the previous one same value.  4. The device according to any one of paragraphs. 1-3, characterized in that the second of the double bulkheads are installed at a distance of 0.6-1.2 m from the first and have a height of 0.7-0.9 of the height of the hold, while their upper part is installed at the height of the coaming of the hold.  5. The device according to any one of paragraphs. 1-4, characterized in that the coaming hold in the area of the last settling and processing chamber has a height at the level of the height of the last waterproof bulkhead or lower by 0.1-0.2 m  6. The device according to any one of paragraphs. 1-5, characterized in that in the waterproof bulkheads in the lower part mounted bulkhead clinkets.  7. The device according to any one of paragraphs. 1-6, characterized in that the nozzles for supplying washing water are installed in the lower part of the settling and enrichment chambers in the direction of the total pulp stream in an amount of at least two per settling and enrichment chamber.

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