SU768477A1 - Separation process automatic control method - Google Patents

Description

(54) METHOD FOR AUTOMATIC CONTROL OF THE SEPARATION PROCESS

The invention relates to the field of automatic control of the classifying apparatus and can be (Used in the mining and other industries of the industry in which hydrocyclones are used as the classifying apparatus.

There is a known method of automatically controlling the operation of a hydrocyclone by means of controlling the density and the flow rate of its supply i.

The disadvantage of this method is that its output products undergo magnetic separation. without measuring qualitative and quantitative parameters. .

The closest to the invention is the technical essence and the achieved result (§ 7 There is a method of auto-20matic control of the separation process in a plant containing a sump cyclone and a magnetic deslamator by measuring the pressure before the hydrocyclone and controlling the flow rate JS and water in the sump of the cyclone.

However, this method does not fully take into account the changing fizyko-mekhanicheskie and structural properties of the processed ore, because

the controlled parameter is the size of the boundary grain, which is closely related to the content of the finished class in the discharge of the hydrocyclone, a. not the amount of disclosed minerals. In addition, with the changing properties of the material, the controlling effect, which is the flow of water into the hydrocycle cyclone sump, is often not strong enough. Therefore, when managing p6, this method can add up to this situation. By regulating the size of the boundary grain according to the measured parameters of the pulp consumption in the drain and the power of the hydrocyclone, the pressure before the hydrocyclone and the density of the pulp in the power of the hydrocyclone, leads to negative indicators at further stages of ore processing (reduced productivity, reduced iron content, etc. .). The aim of the invention is to improve the quality of control of the operation of a hydrocyclone with the often changing properties of the ore being processed due to a clearer separation of the disclosed particles of the useful mineral and the aggregates.

The goal is achieved by additionally measuring the percentage of magnetite in the tails of a magnetic separator and in the overflow of a magnetic deslamator, the magnitude of the percentage of magnetite in the overflow of the magnetic deslamator being controlled by changing the flow rate of the hydrocyclone, and by the magnitude of the content of magnetite in the tail of the magnetite in the tail of the magnetite in the tail of the magnetite, and according to the magnetite content of the magnetite in the tail of the magnetite, the separator corrects the pressure, the pulp at the entrance to the hydrocyclone;

Device 5alizuk tse this method is shown in the drawing. :

ycTpoftqTBO includes; se sump of a hydrocyclone 1, pump 2, engine eJoJ; type 3,. hydrocyclone 4, mill 5, magnetic separator b, magnetic arrangement: mat 7, pressure sensor 8, sensors 9 and 10 percent magnetite content in the tails of magnetic separation and overlapping separator, respectively, regulator 11 and 12, setting device 13, actuator 14,. converter unit 15, thyristor converter 16 and regulator 17.. .. ,

The method is carried out in a follow-up manner. :. ; ,, .

Automatic regulation of the working cycle of a hydrocyclone on a given process; It is carried out in the following way.

.In changing the properties of pe | re | oabateable ore in the direction of deterioration from the standpoint of enrichment., .E. a decrease in the content of gmegit, y) the value of TBeo.TjocTH. etc. , in the previous stage of grinding, less is obtained; the amount of minerals and more that are revealed is more useful. . in the overflow of the DI; will be less. There will be a situation in which the content / magnetite in the tails of magnetic separation and the overflow of the declarator will become less than one given (the maximum ipasHO eyacheny | maximized). The magnetite jig will also decrease in the middlings and coicentre. In this case, at the input of the controller 11, the Wits mismatch signal peryJMTOp 11 will generate a signal to increase the water flow in the zoom f, the hydrocyclone 1. The percentage value: 6 magnet-ita holds in the tails; Magnetic separator b, Determined sensor dm s 9, sets a new value for the pressure at the inlet, 1 for 1 dvoyrikloy 4. Due to this / at the inlet 5) it is at the village t2 sigal racion and controller 12 through the converter unit 15 and the thyristor converter. 16 will reduce the number of -oboo; the rotors of the engine of the pump 3, which reduces the flow of pulp through the pump 2 and the pressure at the inlet to the hydrocyclone. This will change the classification efficiency. The amount of material passing through the mill 5 will decrease, the degree of grinding will increase, the losses in the separation tails and the overflow of the magnetic separator will increase to the maximum permissible level for. this for this type of ore; the maximum content of magnetite in the middling product will be achieved and the maximum output per solid will be.

Using this method will improve the quality of regulation of the work of the hydrocyclone, increase the productivity of the stage in solid, home, increase the percentage of magnetite in the middling. In general, in the section for the regulation of one stage, the ore productivity will increase — approximately 1%; the magnetite content in the concentrate, by 0.1%.

The estimated economic effect is 29.8 thousand rubles. in year.

Claims (2)

Invention Formula The method of automatic control of the separation process in an installation containing a hydronic cyclone with a sump and a magnetic deslamator, by measuring the pressure of the pulp over the hydrocyclical and controlling the flow of water into the sump of the cyclone, and so that, in order to increase control of work, of a hydrocyclone at often changing properties of the ore being processed due to: a clearer separation of the revealed mineral particles and splices,. further measured. the magnitude of magnetite in the centrifugal tax of the magnetic separator and the overflow of magnetic deslamat Oro, with the magnitude of the percentage of magnetite in the transfusion of magnetic, the material of the magnetite change in the flow rate of the hydrocyclone sump, in the case of the magnetite, in the same period, the amount of short courses, in the same time, in the same time, in the same time, in the same time, the amount of magnetite should be used in the same period of time, and in the same time, exit into the hydrocyclone. . v: - :: -. sources. information, --l;: ...; .-:;.:;: rij you are taken into account in the .examination l1 UK Patent No. 151648; CL B 04 C 11/00, 05.) 7.78, J; . : 2. USSR author's certificate 542561, cl. B 04 C 11/00, 01.09.75. (prototype).