CN2393645Y

CN2393645Y - Filtering screen

Info

Publication number: CN2393645Y
Application number: CN 99243215
Authority: CN
Inventors: 张春卜
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-16
Filing date: 1999-09-16
Publication date: 2000-08-30
Anticipated expiration: 2009-09-16

Abstract

The utility model relates to a filtering screen for separating solid materials by a wet method, which comprises a bottom screen capable of seeping the liquid and grids capable of depositing heavy objects arranged in the upper part of the bottom screen. The filtering screen has the advantages of simple structure and simple processing technology; the utility model can accelerate the deposition of gold or heavy particles and can enhance the recovery rate of the gold.

Description

A kind of screen

The utility model relates to a kind of wet separation solid material of using, and especially for the screen of panning gold ore out, it comprises a spacer screen of being made by nonwoven or fabric that makes that liquid falls.

A kind of occasion of using screen is to pan gold ore out or the choosing gold.Because the fine particulate form that gold is not often seen with naked eyes is scattered in the rock, and is then rarely found even as big as the block gold of seeing, so, pan gold ore out and use wet sieving usually, make the bigger gold grain deposition of proportion, and separate with earth or gravel.It is original that the most simply to select golden method be that this kind disc radial is provided with ripple, during use, puts into a small amount of gravel and a large amount of water in dish, makes it into vortex movement, then silicon-containing material is rinsed out, and leaves over down gold and weight with panning flat chassis or sharp chassis.This kind pan top water yield is big, and can only flow out from top, so gold and weight are difficult for deposition, and labour intensity is quite big, and efficient is very low.

For solving this class problem, Chinese patent cn2203186y has announced " a kind of select golden chute slide carriage " patented technology, and it adopts a plastic base, and this substrate is provided with upright bundle and filter opening, and substrate bottom surface has covered filtering material.Its meaning is to want to make part water to flow out from the filter opening of slide carriage bottom, to reduce the discharge on slide carriage top, impels bottom the gold grain deposition, and hinders flowing of gold grain with upright bundle, contains the adhesive force of gold grain during with the raising slide carriage.But this kind slide carriage processing technology is quite complicated, and cost is very high; Simultaneously, upright bundle is among the ore pulp of trickling for a long time, makes this not robust upright bundle shorter service life; In addition, even leave filter opening on the substrate, but most area still by fluid-tight parts such as upright bundle in occupation of, so the discharge of this slide carriage bottom is also not very big comparatively speaking, it can only increase the fraction gold grain and deposit.

Task of the present utility model provides a kind of improved screen, and wherein gold grain leached easily when it can make ore deposit dress flow through this screen, and can overcome above-mentioned weak point

For finishing above-mentioned task, the utility model comprises the spacer screen of being made by nonwoven or fabric that makes the liquid free-falling, and this spacer screen top also is provided with a graticule mesh that makes than the weight deposition.

Described graticule mesh can be made by plastic material, preferably adopts polythene material.

Described graticule mesh has the ribs that protrudes in spacer screen, and this ribs vertically has a vertical gradient that is beneficial to heavier solid retention that tilts gradually.

The vertical gradient of described ribs can be arranged between the 30-60 degree.

Because the utility model adopts spacer screen top that the structure of graticule mesh is set, so this kind screen structure is simple especially, and is highly susceptible to processing; Simultaneously, because of spacer screen occupies the most of area of whole screen,, accelerated the deposition of gold or gold grain so most of water yield can leach from spacer screen; In addition, graticule mesh has the function that the obstruction metallic particles moves, and it can improve the rate of recovery of gold grain.

Below in conjunction with drawings and Examples the utility model is elaborated.

Accompanying drawing 1 is a surface structure schematic diagram of the present utility model.

Referring to Fig. 1, this screen 1 comprises a frame rectangle or other geometry, in this frame, be provided with the spacer screen 11 that one deck is made of nonwoven or fabric, and be equipped with in spacer screen 11 upper surfaces by mutual intersection and the graticule mesh one by one 12 that constitutes with ribs 13 that frame tilts.Graticule mesh 12 is prismatic substantially, and it can hinder the heavy solid particle that has deposited and flow, and for guaranteeing this point, ribs 13 vertically is provided with the gradient that heavier solid particle is retained that is beneficial to of inclination gradually, and this gradient is preferably disposed between the 30-60 degree.Forming the ribs 13 of grid 12 can be made by plastic material such as polythene material.

During use, because spacer screen 11 has unlimited seepage of water, so, when ore pulp flows on the screen 1, along with shaking or shaking screen 1, a part of water oozes out from spacer screen 11, and heavier gold grain is deposited in the graticule mesh, and lighter earth or gravel flow out from graticule mesh 12 tops with liquid such as water, and deposition promptly is gold grain and other heavier material grainses in bottom or the graticule mesh 12.

Claims

1. be used for wet separating solids material, especially for the screen of panning gold ore out, comprise the spacer screen of being made by nonwoven or fabric that makes the liquid free-falling, it is characterized in that: this spacer screen top also is provided with a graticule mesh that makes than the weight deposition.

2. the described screen of root a tree name claim 1, it is characterized in that: described graticule mesh can be made by plastic material, preferably adopts polythene material.

3. the described screen of root a tree name claim 1, it is characterized in that: described graticule mesh has the ribs that protrudes in spacer screen, and this ribs vertically have one vertical tilt gradually be beneficial to the gradient that heavier solid is retained.

4. the described screen of root a tree name claim 3, it is characterized in that: the vertical gradient of described ribs can be arranged between the 30-60 degree.