RU2294242C2 - Scrubber-disintegrator for washing and classification of clay-containing materials - Google Patents

Abstract

FIELD: concentration of minerals; devices for washing ores and hardly washable materials including clay component.

SUBSTANCE: proposed scrubber-disintegrator for washing and classification of clay-containing materials consists of disintegration drum and classification drum with one frame and drive shaft. Mounted in lower part of disintegration drum provided with perforations is two-section bath with revolving rubber rolls; its first section is used for delivery of water under pressure through perforations into inner part of disintegration drum and second section is used for removal of used water and sludge.

EFFECT: enhanced efficiency of disintegration.

3 dwg

Description

The invention relates to the field of mineral processing, in particular to devices for washing ores and difficult to wash materials, including a clay component.

Flushing screens are known, including a frame, a perforated rotary drum, a water conduit, and a drive shaft.

The main disadvantage of this apparatus is that these devices are mainly used for washing easily dispersed and low-clay materials. With a high content of clay fractions in the initial sands, the holes of the perforated drum become clogged, which leads to a decrease in screening efficiency.

The closest solution to the technological essence of the claimed is a scrubber buter S-22, consisting of two drums, the first drum is blank, the second is perforated. In a blank drum, mechanical processing and washing with a jet of water under pressure take place, in the second there is a classification of disintegrated material.

This type of apparatus is used for washing medium-washed sand. For highly clayey (especially in the presence of focal fleshy clay) work efficiency is sharply reduced due to the formation of pellets and clogging of the perforation of the drum. Disintegration using mechanical methods of mixing sand does not always ensure the complete disintegration of clay pellets. Such a treatment regime, even if there is a washing with a high pressure water jet in a rotating deaf drum, is insufficient to destroy the pellets.

The noted disadvantages can be overcome in the proposed apparatus (scrubber-disintegrator) for washing and classifying materials containing clay, consisting of a drum for disintegration and a classifier drum with one frame, a drive shaft, characterized in that it is equipped with a disintegration drum installed in the lower part made with perforation, a two-section bathtub with rotating rubber rollers, the first section of which is designed to pump water under pressure through perforated holes in the inner a second part of the drum for disintegration, while the second section serves to remove waste water and sludge.

A comparable analysis with an analogue shows that the inventive apparatus is characterized in that the perforated holes of the washing drum, in addition to the classifier function and the erosion of fine fractions, simultaneously perform an additional function - they are used as guiding jets of water under pressure in the inner part of the drum. This eliminates the need to use an internal conduit for the drum and forcing the jet (monitor). As a result, in the proposed embodiment, the area of effective impact of the jets on the disintegrable material is significantly increased. Thus, the proposed apparatus meets the criteria of the invention of "novelty."

Technological solutions are known, in particular for the prototype, when the disintegration of clay formations was achieved due to the mechanical effect on the material in a dead drum (in a separate section of the disintegrator-scrubber). In the claimed solution, due to the continuous rotation of the drum, as well as the constant injection of water in the first section of the bath and the creation of jets of water through the perforated holes over the entire area of the washing drum portion falling on the first section, an effective and constant mode of countercurrent hydraulic cutting of the material rolling during rotation of the drum is created . Due to what the best dispersion of clay materials is achieved, and most importantly, the conditions for the conservation of clay pellets in the working area of disintegration are excluded.

This allows us to conclude that the claimed apparatus meets the criterion of "inventive step".

The invention is illustrated by graphic materials, where in Fig.1 shows a General view of the scrubber, Fig.2 is a side view, Fig.3 is a front section of a scrubber AA.

The scrubber-disintegrator for washing and classifying materials containing clay consists of a drive shaft 1, a support frame 2, a washing drum 3, a classifier drum 4, a two-section bath 5, three rubber rollers 6 and a pipe 7 for supplying water to the bath.

The washing drum is immersed in a two-section bathtub and is supported by three freely rotating rubber rollers 6 installed on the sides and in the middle, as a result of which there is tight contact that prevents overflow (leakage) of water from the side of the first section, and penetration is prevented by the middle roller pumped water into the second leaky bath section, waste water and sludge are removed through an opening in the lower part. The sealing of the first section of the bath, in which water is pumped, is achieved due to the fact that the side skating rink prevents leakage of water from the side, and the middle one keeps it from penetrating the second leaky section.

The second drum, made in the form of a regular octagonal prism, is perforated with square holes, fastened to the first drum and serves as a classifier.

The scrubber-disintegrator operates as follows: through the nozzle 7, water is supplied under pressure to the sealed first section of the bath 5, then the starting material is loaded into the rotating washing drum 3 from the shaft 1 leading the drum into motion. Water jets, forming a continuous cutting mode, disintegrate the material moving along the inner plane of the drum. The second section of the bath 5, through the hole in the lower part, disintegrates the silt fraction, as well as the waste wash water, into the dump. Next, the blurred material enters the drum-classifier 4.

Claims (1)

A scrubber-disintegrator for washing and classifying materials containing clay, consisting of a drum for disintegration and a classifier drum with one frame, a drive shaft, characterized in that it is equipped with a two-section bathtub with rotating rubber mounted in the lower part of the disintegration drum, made with perforation rollers, the first section of which is designed to pump water under pressure through perforated holes into the inside of the drum for disintegration, and the second section serves to remove waste water and sludge.

Images