Integrally designed two-product dense medium separation process

Abstract

The invention discloses an integrally designed two-product dense medium separation process. The integrally designed two-product dense medium separation process is characterized in that: 1, the vertical discharging mode of the conventional light and dense products is changed into the same-direction discharging mode, the light and dense products can share the same fixed screen, and a linear vibration screen for medium drainage, and the middle part of each screen is separated by a partition plate; 2, chutes of sift qualified media and diluted media of a medium drainage screen are specially designed to replace a qualified medium barrel and a diluted medium barrel; 3, magnetic concentrate which is obtained by magnetic separation directly enters the qualified medium barrel, and a concentrated medium barrel is eliminated; 4, a qualified medium pump output pipeline is directly provided with three outlets which are used for eliminating horizontal flow and upward flow of a shallow slot dense medium separator, and siftage enters a magnetic separator for magnetic separation, and the magnetic separator replaces a flow divider box which is designed by the conventional process; and 5, a density adjustment device guarantees that the density of working suspension is stable in a separation process. A differential pressure density meter is used on a pipeline of a medium flow which returns to theshallow slot dense medium separator, so that the density of the suspension in the separation process is not greatly fluctuated.

Description

technical field [0001] The invention relates to a coal preparation technology, in particular to an integrated design two-product heavy medium separation process. [0002] Background technique [0003] With the rapid development of my country's economy, the demand for energy is also increasing. Coal accounts for about 70% of primary energy production and consumption. The coal gangue produced in the mining and washing process can be re-selected to separate the coal from the washing gangue to reduce the loss of coal resources and turn waste into treasure . It is particularly urgent to study the sorting technology of jigging gangue. [0004] At present, the domestic research on coal gangue sorting mainly focuses on the two fields of wet sorting and dry sorting. Among them, the main methods of wet separation of coal gangue are jig separation and heavy medium cyclone separation; the dry separation of coal gangue is mainly a composite dry separation process. Major foreign prod...

AI Technical Summary

Problems solved by technology

Because of these three characteristics of the process, the system must have a splitter box, a medium barrel, and multiple media removal screens to complete the corresponding functions, which increases the process of the system, increases the investment in the system and the capital construction of the plant, Reduce the reliability of the system, increase the power of the system, increase the workload of management and maintenance, etc.

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