SU1466791A1

SU1466791A1 - Method of jigging

Info

Publication number: SU1466791A1
Application number: SU874277158A
Authority: SU
Inventors: Николай Петрович Черных; Виктор Матвеевич Птицын; Татьяна Николаевна Ванюкова
Original assignee: Кузнецкий научно-исследовательский и проектно-конструкторский институт углеобогащения
Priority date: 1987-07-06
Filing date: 1987-07-06
Publication date: 1989-03-23

Abstract

Изобретение относитс к обогащению полезны.х ископаемых и предусматривает создание пульсаций воды рабочей средой (PC) в отсадочной машине с двум отделени ми, способствующих разделению материала по плотности. Целью изобретени вл етс повышение эффективности процесса отсадки за счет создани интервала посто нной скорости движени воды. Дл создани пульсаций непрерывно подают PC от внещнего источника только в одно из отделений. Одновременно с этим из другого отделени отсасывают PC в вакуум-ресивер и периодически перепускают PC из отделени , в которое подают PC, в отделение, откуда PC отсасывают При этом создаютс различные режимы отсадки в разных отделени х отсадочной машины:- удлиненный интервал действи посто нной скорости движени воды на выход щем ходе в первом отделении и на нисход щем ходе во втором отделении I ил. § СЛThe invention relates to the enrichment of useful minerals and provides for the creation of water pulsations by the working medium (PC) in a jigging machine with two compartments, which promote the separation of material according to density. The aim of the invention is to increase the efficiency of the jigging process by creating an interval of constant water velocity. To create pulsations, PCs are continuously supplied from an external source to only one of the compartments. At the same time, the PC is sucked from the other compartment into the vacuum receiver and the PC is periodically transferred from the compartment into which the PC is delivered to the compartment from where the PC is sucked. Different jigging modes are created in different compartments of the jigging machine: - extended interval of constant speed water movement in the outgoing stroke in the first compartment and downstream in the second compartment i il. § SL

Description

1one

Изобретение относитс к обогащению полезных ископаемых путе.м обогащени в отсадочной машине водной среды с помощью сжатого воздуха.The invention relates to the enrichment of minerals by enriching the aqueous medium in a jigging machine with compressed air.

Цель изобретени - повышение эффективности процесса отсадки за счет создани интервала времени с посто нной скоростью движени воды..The purpose of the invention is to increase the efficiency of the jigging process by creating a time interval with a constant speed of water movement.

Способ заключаетс в том, что рабочую среду от внешнего источника ведут непрерыв но только в одно отделение, и отсасывание производ т только из другого отделени во внешний источник, при этом перепуск рабочей среды ведут периодически только из отделени , в которое производ т подачу рабочей среды.The method consists in that the working medium from an external source is continuously but only in one compartment, and suction is performed only from another compartment to an external source, while the working medium is bypassed periodically only from the compartment into which the working medium is supplied.

Установлено, что с увеличением интервала времени действи среды, перемещающейс с посто нной скоростью, расслоение материала происходит точнее, продукты обогащени имеют .меньшее засорение посторонними фракци ми.It has been established that with an increase in the time interval of the medium moving at a constant speed, the material is separated more precisely, the enrichment products have a smaller contamination by foreign fractions.

Это объ сн етс тем, что разрыхленность материала при посто нной скорости потока в этот период вре.мени имеет также посто нную величину, разделение массы зерен, различных по размерам и плотност м происходит только по отноЬительным плотност м их взвесей при заданных значени х частоты и амплитуды пульсаций раздел ющей среды.This is due to the fact that the loosening of the material at a constant flow rate during this period, time also has a constant value, the separation of the mass of grains of different sizes and densities occurs only in relative densities of their suspensions at given frequencies and amplitudes of pulsations of the separating medium.

Относительна плотность взвесей определ етс по формулеThe relative density of suspensions is determined by the formula

j(),j ()

где б - коэффициент разрыхленности; ё- плотность зерен, кг/м ; Д- плотность жидкой фазы, кг/м.where b is the coefficient of loosening; ё - density of grains, kg / m; D- density of the liquid phase, kg / m.

4 Oi 05 4 Oi 05

оabout

Технологический режим в каждом отделении отсадочной машины (породное, пром- продуктовое) создаетс однозначным в зависимости от выдел емых нродуктов (концентрат , промпродукт, отходы).The technological regime in each compartment of the jigging machine (pedigree, industrial product) is unequivocal, depending on the released products (concentrate, intermediate product, waste).

Дл повышени точности разделени исходного материала необходимо иметь в различных отделени х отсадочной машины удлиненный интервал действи посто нной скоВследствие создани непрерывной подачи воздуха в камеру первого (породного)To improve the accuracy of the separation of the source material, it is necessary to have in the various compartments of the jigging machine an extended interval of action. Constant creation of a continuous supply of air into the chamber of the first (breed)

рости движени среды на восход щем (по- Q отделени и его непрерывного отсасывани the growth rate of the medium at the upstream (by Q separation and its continuous suction

родное отделение) и нисход щем (промпро- дуктовое) ходе цикла отсадки.native branch) and downward (industrial) course of the jigging cycle.

На чертеже показана схема отсадочной машины дл реализации предлагаемого способа .The drawing shows the scheme of the jigging machine for the implementation of the proposed method.

Схема включает отсадочную машину 1, состо щую из отделений 2 и 3 с воздушными камерами 4 и 5, соединенными воздуховода- .ми с перепускным устройством 6, воздухосборником . 7, вакуум-ресивером 8, сообщаюиз воздущной камеры второго (промпродук- тового) отделени создаетс гидродинамический режим, который повышает точность расслоени материала на продукты обогащени .The scheme includes a jigging machine 1 consisting of compartments 2 and 3 with air chambers 4 and 5, connected by air ducts with the bypass device 6, and an air collector. 7, the vacuum receiver 8, reporting from the air chamber of the second (industrial) compartment, creates a hydrodynamic mode, which improves the accuracy of the separation of the material into enrichment products.

Claims

Invention Formula

The method of jigging, including the simultaneous creation of water pulsations of the working shim with a blower 9. The air ducts are supplied with the medium in two compartments of the jigging machine with throttle dampers 10. You are fed to one of the working medium sections by the following method with simultaneous removal from the other compartment, with the blower 9 in the air collector 7, the creation of the working medium from one compartment is given to increased pressure and vacuum another, characterized in that, in order to repress the vacuum receiver 8. The air from the increase in the efficiency of the jigging process of the dust collector 7 is continuously supplied as a result of the creation of a time interval with the cushion chamber 4 and continuously sucked in by the speed of water moving from the air chamber 5 into the vacuum-space of the working medium. from an external source, a cover 8. A bypass device 6 bypasses continuously to only one compartment and compressed air from chamber 4 to chamber 5. DZ suction is performed only from another

In compartment 2, when the compartment is continuously supplied to an external source, a compressed air is created in chamber 4 by a working medium bypassing the flow of water from time to time, with the release of air only from the compartment into which flow 6 is fed - a downward flow. Single Wednesday.

temporarily, in compartment 3, with a continuous suction of air from chamber 5, a downward flow of water is created, and with the intake of air from device 6, a rising flow of water is created. The magnitude of the water oscillation amplitude is controlled by throttle valves 10.

Due to the creation of a continuous supply of air into the chamber of the first (pedigree)

Q separation and its continuous suction

separation and its continuous suction

From the air chamber of the second (industrial) compartment, a hydrodynamic regime is created, which improves the accuracy of the separation of the material into enrichment products.

Invention Formula