SU856490A1 - Method of controlling magnetite concentrate dehydration process - Google Patents

Description

I

This invention relates to methods for regulating the process of iron ore enrichment and can be used in the desliming, thickening and filtration of finely divided magnetite ores.

There is a known method of dewatering magnetite concentrate, which includes condensing it in a deslimer and subsequent filtration in a vacuum filter, in which the feed from magnetic separation, fresh water and overflow from vacuum filters, which is a circulating load, is fed to the input of the separator.

However, the presence of a circulating load significantly worsens the process of deslining the pulp, since it creates constrained conditions for the material in the deschlamator, which leads to an increased iron content in the discharge. In addition, the lack of information about the magnitude of the circulating load reduces the performance of the filter compartment, since it is not known when and how much to start the vacuum filters or to adjust the performance of the filters themselves.

The purpose of the invention is to increase the increment of the iron content in the sands of the declamator and to reduce the iron content of the discharge by improving control quality.

The goal is achieved by the fact that the capacity of the vacuum filter is additionally regulated by the magnitude of the circulating load, defined by the formula S iQ-P, where y is the density of the sands of the declamator; Q - the consumption of sands of deschlamar; P is the weight of the cake at the outlet of the vacuum filter; S is the value of the circulation load.

The drawing shows a schematic diagram of a system implementing the proposed method.

The method is carried out as follows.

The determination of the circulating load is carried out by continuously measuring the density of the sands at the outlet of the separator, the productivity of the sand pump and the weight of the cake on the conveyor installed under each vacuum filter. Electrical signals corresponding to the measured parameters of density, pump performance and cake weight are fed to

Claims (1)

Claim A method for controlling process Defused ²⁰ zhivaniya magnetite concentrate comprising its concentration in the dirt separator and the subsequent filtration in a vacuum filter, characterized in that, in order to increase the increment iron sands deshlama25 torus and reduce the iron content in the sink it by improving the quality, performance management the vacuum filter is additionally controlled by the magnitude of the circulation load, determined by the formula S = yQ — P, where # is the density 30 deslamator sands; Q is the consumption of deslamator sands; P is the weight of the cake at the outlet of the vacuum filter; S is the magnitude of the circulating load.