CN210768902U

CN210768902U - Tailing slurry collects buffering feeder

Info

Publication number: CN210768902U
Application number: CN201921908703.9U
Authority: CN
Inventors: 孙冠男; 巴家泓; 周育; 刘召胜
Original assignee: Northern Engineering and Technology Corp MCC
Current assignee: Northern Engineering and Technology Corp MCC
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-16
Anticipated expiration: 2029-11-07

Abstract

The utility model relates to a tail mortar collects buffering feeder, its characterized in that: the device comprises a columnar box body with a top plate and a base, an inclined guide plate fixed on the inner wall of the lower part of the columnar box body, a flow guide buffering barrel fixed between the top plate of the columnar box body and the inclined guide plate, a feeding pipe penetrating through the outer wall of the columnar box body and communicated with the inner cavity of the flow guide buffering barrel in a tangential direction, a converging mixing cone barrel fixed on the inner wall of the flow guide buffering barrel, a grid sieve arranged at the top of the converging mixing cone barrel and a discharging pipe arranged at the lower part of the side; the diameter of the upper opening of the collecting mixing cone barrel is the same as the inner diameter of the diversion buffer barrel, and an annular buffer space is formed between the diversion buffer barrel and the inner wall of the columnar box body. The utility model has the advantages that: the tail mortar is collected, mixed and decompressed to dissipate energy, so that the tail mortar is stably and gently fed to a tail mortar concentration and storage facility for filling, and meanwhile, the deposition and pipe blockage of the tail mortar are avoided.

Description

Tailing slurry collects buffering feeder

Technical Field

The utility model relates to a mine exploitation filling system, especially a tailing slurry that is assisted and is used for mine to fill collects buffering feeder realizes that tailing slurry collects and mixes, the decompression energy dissipation, steadily feeds with relaxing, avoids tailing deposit, stifled pipe simultaneously.

Background

The tailing feeding mode of the current filling system is that the tailing from the plant selection is directly conveyed into tailing concentration and storage facilities (sand silo or deep cone thickener) for filling, and is mixed with a flocculating agent to accelerate the sedimentation and concentration of the tailing. This feeding mode has certain problems: the tailing slurry conveyed from the underflow of the concentrating pool of the concentrating plant has certain residual pressure, and the tailing slurry directly enters a tailing slurry concentrating and storing facility to generate larger impact force, so that the sedimentation and the concentration effects of the tailing slurry are interfered, the addition amount of a flocculating agent is increased, the operation cost is increased, and the overflow water quality of the tailing slurry concentrating and storing facility is influenced.

For a filling system for mining a mine by a large-scale filling method, the technical experience at home and abroad is shallow at present, and a lot of points worth optimizing and improving exist for designing and constructing the mine by referring to a small-scale filling method. For mining mines by a large-scale filling method, in order to solve the problem that the flow rate of tail mortar conveyed from the underflow of a concentrating pool of a concentrating mill is large, the tail mortar is generally conveyed to a tail mortar concentrating and storing facility for filling in a manner of uniformly dividing a plurality of pipelines. However, in order to ensure the effect of settling and concentrating the tailings, the feeding pipe of the tailing slurry concentrating and storing facility usually adopts a single pipe, and the tailing slurry must be collected and mixed before entering the tailing slurry concentrating and storing facility.

The patent with the publication number of CN 104763468B discloses a tailing slurry collecting, buffering and feeding device and a method, and the device comprises a box body with a top plate and a base, a diversion collecting barrel fixed below the top plate of the box body and extending downwards along the height direction of the box body, a mixed overflow buffering barrel fixed above the base of the box body and extending upwards along the height direction of the box body, a feeding pipe communicated with the inner cavity of the diversion collecting barrel, a discharging pipe arranged at the lower part of the side wall of the box body and a grizzly arranged in the diversion collecting barrel, wherein the upper edge of the mixed overflow buffering barrel is not lower than the lower edge of the diversion collecting barrel, the barrel diameter of the mixed overflow buffering barrel is larger than that of the diversion collecting barrel, an annular overflow port is formed between the mixed overflow buffering barrel and the side wall of the box. The tail mortar from a dressing plant enters a diversion collection barrel through a feeding pipe, large waste residues are filtered by a grid screen and then flow to a mixed overflow buffer barrel, the tail mortar is collected and mixed in the mixed overflow buffer barrel and then overflows to an annular buffer space between a box body and the mixed overflow buffer barrel through an annular overflow port, and finally flows out through a discharging pipe. Mix overflow buffer tank's lateral wall simultaneously higher, the box adopts the flat bed board and has certain distance with the discharging pipe bottom, and the equal easy tailings deposit that leads to, harden, after the tailing pulp erodees repeatedly, very easily causes the tailing piece that hardens to drop, blocks up the discharging pipe.

Disclosure of Invention

An object of the utility model is to provide a can realize gathering of tail mortar and mix and the energy dissipation of decompression, make tail mortar steadily milden to the tail mortar concentration and the storage facility feed of filling usefulness, the tail mortar of having avoided tail sand deposit, stifled pipe simultaneously again collects buffering feeder.

The utility model aims at realizing through the following technical scheme:

the utility model discloses a tail mortar collects buffering feeder, its characterized in that: the method comprises the following steps: the device comprises a columnar box body with a top plate and a base, an inclined guide plate fixed on the inner wall of the lower part of the columnar box body, a flow guide buffering barrel fixed between the top plate of the columnar box body and the inclined guide plate, a feeding pipe penetrating through the outer wall of the columnar box body and tangentially communicated with the inner cavity of the flow guide buffering barrel, a converging mixing cone barrel fixed on the inner wall of the flow guide buffering barrel, a grid sieve arranged at the top of the converging mixing cone barrel and a discharging pipe arranged at the lower part of the side;

the diameter of the upper opening of the converging mixing cone barrel is the same as the inner diameter of the diversion buffer barrel, and an annular buffer space is formed between the diversion buffer barrel and the inner wall of the columnar box body.

The center of the top plate of the columnar box body is provided with an open exhaust pressure reducing hole which is used as an inspection manhole.

The feed pipes are at least two, and the feed pipes are arranged in parallel or in an angle.

The peripheral wall of the lower part of the diversion buffer barrel is uniformly provided with array resistance-increasing pressure-reducing holes.

The lowermost end and the discharging pipe bottom smooth connection of slope guide plate, the contained angle of slope guide plate and columnar box base is α =6 ~ 8.

The central lines of the columnar box body, the diversion buffer barrel and the collecting mixing cone barrel are superposed with each other.

The utility model has the advantages that:

1. on the premise of not changing main performance parameters such as total flow, mass concentration and the like, the gathering and mixing of the tail mortar are realized, so that the tail mortar is more stable and mild, and the subsequent treatment is facilitated;

2. the effect of pressure reduction and energy dissipation is achieved, the impact force of newly supplied tail mortar on the existing tail mortar in a tail sand concentration and storage facility is greatly reduced, and the feeding of the tail mortar is more stable and mild;

3. the consumption of the flocculating agent in tailing concentration and storage facilities is obviously reduced, and the operation cost is saved;

4. the overflow water quality of tailing concentration and storage facilities is obviously improved, and the later-stage treatment is facilitated;

5. the array resistance-increasing pressure-reducing holes are uniformly arranged on the peripheral wall of the lower part of the diversion buffer barrel, and the inclined diversion plate connected with the bottom of the discharge pipe at the lowest end is arranged in the box body, so that dead material accumulation points are effectively prevented from being formed, and the phenomena of deposition and hardening of tailings are avoided.

Drawings

FIG. 1 is a schematic plan view of the structure of the present invention;

fig. 2 is a sectional view taken along line a-a of fig. 1.

Number in the figure: 1-feeding pipe, 2-columnar box body, 3-diversion buffer barrel, 4-grid sieve, 5-converging mixing conical barrel, 6-discharging pipe, 7-inclined diversion plate, 21-exhaust pressure reducing hole and 31-array resistance-increasing pressure reducing hole.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the utility model discloses a tailing slurry collects buffering feeder, its characterized in that: the method comprises the following steps: the device comprises a columnar box body 2 with a top plate and a base, an inclined guide plate 7 fixed on the inner wall of the lower part of the columnar box body 2, a diversion buffer barrel 3 fixed between the top plate of the columnar box body 2 and the inclined guide plate 7, a feeding pipe 1 penetrating through the outer wall of the columnar box body 2 and tangentially communicated with the inner cavity of the diversion buffer barrel 3, a converging and mixing cone barrel 5 fixed on the inner wall of the diversion buffer barrel 3, a grid 4 arranged at the top of the converging and mixing cone barrel 5 and a discharging pipe 6 arranged at the lower part of the side wall of the;

the diameter of the upper opening of the converging mixing cone barrel 5 is the same as the inner diameter of the diversion buffer barrel 3, and an annular buffer space is formed between the diversion buffer barrel 3 and the inner wall of the columnar box body 2.

An open exhaust pressure reducing hole 21 is arranged at the center of the top plate of the columnar box body 2 and is used as an inspection manhole.

The feeding pipes 1 are three, two adjacent feeding pipes 1 are arranged at an included angle of 90 degrees, and the outlet center of each feeding pipe 1 is positioned on the same concentric circle of the columnar box body 2.

The circumferential wall of the lower part of the diversion buffer barrel 3 is uniformly provided with array resistance-increasing pressure-reducing holes 31.

The lowest end of the inclined guide plate 7 is smoothly connected with the bottom of the discharge pipe 6, and the included angle between the inclined guide plate 7 and the columnar box base is α = 6-8 degrees.

The central lines of the columnar box body 2, the diversion buffer barrel 3 and the collecting mixing cone barrel 5 are superposed with each other.

The utility model discloses a working process is: tail mortar from a concentrating mill enters the diversion buffer barrel 3 through the feeding pipe 1 in a tangential feeding mode, and forms a rotational flow along the inner wall of the diversion buffer barrel 3 to realize first-stage pressure reduction; large waste residues are filtered by a grid sieve 4 and then flow into a converging and mixing conical barrel 5, and after converging and mixing, the waste residues flow into an annular buffer space between the columnar box body 2 and the diversion buffer barrel 3 through the array resistance-increasing pressure-reducing holes 31 on the peripheral wall of the lower part of the diversion buffer barrel 3, so that two-stage pressure reduction is realized; finally, the tail mortar flows out of the discharge pipe and is stably and gently supplied to a tail mortar concentration and storage facility.

The present invention will be further described with reference to the following examples.

Examples

The method comprises the steps of filling iron ore underground by using tailings of a concentrating mill, concentrating and storing tailing slurry by using a phi 25m deep cone thickener, feeding by using a tailing slurry collecting and buffering feeding device shown in figures 1 and 2, wherein the number of feeding pipes 1 in the collecting and buffering device is three, the included angle between every two adjacent feeding pipes 1 is 90 degrees, the inner diameter D1 of each feeding pipe 1 is 300mm, a cylindrical box body 2 is cylindrical, the inner diameter D2 is 3000mm, the height H1 is 3600mm, a flow guide buffering barrel 3 is cylindrical, the inner diameter D3 is 2000mm, array resistance increasing and pressure reducing holes 31 are uniformly distributed between the lower part and an inclined flow guide plate 7 at a position 550mm away from a base of the cylindrical box body 2, a grid 4 is arranged at a position with the height H2=2000mm in the flow guide collecting cone barrel 5, the screen 4 is 5mm × 5mm, the cone angle of a collecting and mixing cone 5 degrees, the lower opening diameter D4 is 450mm, the inner diameter D5 of a discharging pipe is 450mm, the bottom of the flow guide collecting cone 5 degrees, and the included angle of the inclined flow guide plate 367 degrees with the height H4 mm from the base of the cylindrical box body 2.

The parameters of the tail mortar are as follows: the true specific gravity of the tailings is 2.83t/m³The total flow rate of the tail mortar at the bottom flow of the concentrating pool of the concentrating mill is 890m³The dry tailing slurry is characterized in that the dry tailing slurry is 480t, the mass concentration of tailing slurry incoming materials is 40%, a slurry pump is adopted for conveying (the residual pressure of a pipeline is 0.16 MPa), and three conveying pipelines are arranged in total, wherein: two pipelines work, and one pipeline is standby. The index of the tail mortar feeding is shown in table 1.

TABLE 1 index for the feeding of the tailings mortar in the example

Practice shows, adopts the utility model discloses a tailing slurry collects after buffering feeder, has both realized the collection of tailing slurry and has mixed and the decompression energy dissipation, makes tailing slurry steadily mildly to feeding in the deep cone thickener, has avoided tailing deposit, stifled pipe simultaneously again. The utility model discloses a tail mortar collects buffering feeder is applicable to various tail mortar concentration and storage facilities, and the suitability is strong, and popularization prospect is good.

Claims

1. The utility model provides a tail mortar collects buffering feeder which characterized in that: the method comprises the following steps: the device comprises a columnar box body with a top plate and a base, an inclined guide plate fixed on the inner wall of the lower part of the columnar box body, a flow guide buffering barrel fixed between the top plate of the columnar box body and the inclined guide plate, a feeding pipe penetrating through the outer wall of the columnar box body and tangentially communicated with the inner cavity of the flow guide buffering barrel, a converging mixing cone barrel fixed on the inner wall of the flow guide buffering barrel, a grid sieve arranged at the top of the converging mixing cone barrel and a discharging pipe arranged at the lower part of the side;

2. The tailing slurry collection buffering feeding device according to claim 1, characterized in that: the center of the top plate of the columnar box body is provided with an open exhaust pressure reducing hole which is used as an inspection manhole.

3. The tailing slurry collection buffering feeding device according to claim 1, characterized in that: the feed pipes are at least two, and the feed pipes are arranged in parallel or in an angle.

4. The tailing slurry collection buffering feeding device according to claim 1, characterized in that: the peripheral wall of the lower part of the diversion buffer barrel is uniformly provided with array resistance-increasing pressure-reducing holes.

5. The tail mortar collecting, buffering and feeding device of claim 1, wherein the lowest end of the inclined guide plate is smoothly connected with the bottom of the discharge pipe, and the included angle between the inclined guide plate and the base of the columnar box body is α = 6-8 °.

6. The tailing slurry collection buffering feeding device according to claim 1, characterized in that: the central lines of the columnar box body, the diversion buffer barrel and the collecting mixing cone barrel are superposed with each other.