CN214515219U

CN214515219U - Phosphorite flotation tailing processing system

Info

Publication number: CN214515219U
Application number: CN202120466474.0U
Authority: CN
Inventors: 吴兴买; 沈成元; 柏中能; 朱德秀; 唐应生; 雷银贵; 李天华; 王文毓; 罗启亮; 阮长希; 王洪; 刘光桥; 钟鸥; 周军
Original assignee: Yunnan Yuntianhua Red Phosphorus Chemical Co ltd
Current assignee: Yunnan Yuntianhua Red Phosphorus Chemical Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-10-29
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a phosphorite flotation tailing processing system relates to phosphorite flotation tailing and handles technical field. The system comprises a thickener, a first pump, an ore pulp storage tank, a second pump and a disc type pressure filter which are sequentially connected, wherein a first ore feeding pipe is arranged at the top of the thickener, a supernatant overflow port is arranged on the side wall of the thickener, the supernatant overflow port is connected with a flotation production system, a filtrate outlet of the disc type pressure filter is connected with a filtrate collecting tank, a third pump is arranged in the filtrate collecting tank, and an outlet of the third pump is connected with a second ore feeding pipe at the top of the thickener; the pressurizing bin of the disc type pressurizing filter is connected with a first air compressor, and a back-blowing valve at the discharge port of the disc type pressurizing filter is connected with a second air compressor. The disc type pressure filter is used for realizing solid-liquid separation through compressed air, so that the production efficiency is improved, the system realizes concentration of tailing pulp through the thickener, the conveying of the pulp and filtrate is realized through the pump, the automation level is high, and the failure rate is low.

Description

Phosphorite flotation tailing processing system

Technical Field

The utility model relates to a phosphorite flotation tailing handles technical field, concretely relates to phosphorite flotation tailing processing system.

Background

In the process of producing phosphate concentrate by phosphate ore flotation, after raw ore is subjected to crushing, ore grinding and flotation and sorting, phosphate ore is separated into phosphate concentrate and tailings by flotation. The fine tailings produced by flotation are pumped into a tailing pond by a pump in a wet discharging mode for stockpiling, which is a tailing treatment method widely adopted by most phosphorite flotation plants at present. The flotation tailings are wet-discharged in the form of ore pulp, so that the investment cost for constructing a tailing pond is high, the occupied area is large, and the requirement for wet-discharging the flotation tailings is metThe pressure pump, the corresponding delivery pipeline and the flood control and drainage facility are arranged, so that the operation, management and protection cost is high. In contrast, the method is a novel method with better development prospect by using filtering equipment to carry out solid-liquid separation on flotation tailing pulp and then dry-draining the pile. Through many researches and understanding, in the field of phosphorite flotation, filter equipment such as a disc filter, a belt filter, a plate-and-frame automatic filter press, a ceramic filter and the like are all used for processing phosphorite flotation concentrate or tailings, and compared with the plate-and-frame automatic pressure filter, the plate-and-frame automatic pressure filter has relatively good effect. At selected 2 stations of 80m²The plate-and-frame automatic filter press is used for treating tailings, and in the actual use process, the filter cloth of the plate-and-frame automatic filter press is frequently replaced, and the workload of inspection and maintenance is large; large leakage of ore pulp in an operation site, poor environment, difficult maintenance and the like. 2, at least 3-4 operators are required to watch, maintain, process and unload materials and carry out on-site treatment on the filter press with the bedplate frame, so that the labor intensity is high; and the air inlet part of the filter pressing plate is easy to deform and wear, the service time of filter cloth and accessories is short, the maintenance and the replacement are frequent, and the operating cost is high. Due to the problems of the plate-and-frame pressure filter, the failure rate is high, the start and stop are frequent, the yield and the efficiency are low, and the capacity exertion and the stable operation of a plant selection are restricted. Therefore, a system for treating the phosphorite flotation tailings with low failure rate, high automation level and high production efficiency needs to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a phosphorite flotation tailing processing system solves the problem that current processing system fault rate is high, automatic level is low, production efficiency is low.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a phosphorite flotation tailing processing system which characterized in that: the flotation device comprises a thickener, a first pump, an ore pulp storage tank, a second pump and a disc type pressure filter which are sequentially connected, wherein a first ore feeding pipe is arranged at the top of the thickener, a supernatant overflow port is arranged on the side wall of the thickener, the supernatant overflow port is connected with a flotation production system, a filtrate outlet of the disc type pressure filter is connected with a filtrate collecting tank, a third pump is arranged in the filtrate collecting tank, and an outlet of the third pump is connected with a second ore feeding pipe at the top of the thickener; the pressurizing bin of the disc type pressurizing filter is connected with a first air compressor, and a back-blowing valve at the discharge port of the disc type pressurizing filter is connected with a second air compressor.

A compressed air storage tank is arranged between the first air compressor and the disc type pressure filter pressurizing bin.

The further technical proposal is that 5 groups of filter discs are arranged in the pressurizing bin of the disc type pressurizing filter, and the scrapers at the two sides of the filter discs are provided with online cleaning devices.

A stirring device is arranged in the filtrate collecting tank, and a third pump is arranged at the bottom of the filtrate collecting tank.

The further technical scheme is that the outlets of the first ore feeding pipe and the second ore feeding pipe are both positioned in the middle of the thickener.

A belt conveyor is arranged below the discharge opening of the disc type pressurizing filter.

The working principle is as follows: the tailing pulp generated by the flotation production system enters a thickener through a first ore feeding pipe for sedimentation and concentration, underflow tailing is pumped into an pulp storage tank through a first pump and then is pumped into a disc type pressure filter through a second pump, the pressure is applied in a pressure bin through compressed air from a first air compressor, solid-liquid separation is realized on a filter disc, filtrate enters a filtrate collecting tank through a filtrate outlet, solid tailing is scraped off through a scraper, is discharged from a discharge port after the reverse blowing of the compressed air, and is transported to a tailing pond for storage through a conveyor belt or a transfer vehicle. Most of supernatant liquor in the thickener is clean water, and the clear water flows out through a supernatant liquor overflow port and returns to a flotation production system for recycling through a pump or a pipeline. Most of the filtrate in the filtrate collecting tank is beneficiation wastewater, and the small part of the filtrate is tailing fine particles, the beneficiation wastewater is pumped into the thickener again through a third pump for secondary sedimentation, and the beneficiation wastewater returns to the flotation production system, so that zero discharge of the beneficiation wastewater is realized.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the plate-type pressure filter is used for replacing a plate-frame pressure filter, solid-liquid separation is realized through compressed air, so that the production capacity and the production efficiency are improved, the whole system realizes concentration of tailing pulp through a thickener, the tailing solid-liquid separation is realized through the plate-type pressure filter, the conveying of pulp and filtrate is realized through a pump, and the whole system has high automation level and low failure rate.

2. Through set up compressed air storage tank between first air compressor and disk pressure filter pressurization storehouse, realize the continuous stable supply of compressed air, avoid the unstable condition of pressure to appear in the pressurization storehouse.

3. The filter fan on the filter disc is regularly cleaned by the online cleaning device, so that frequent replacement of filter cloth is avoided, the service life of the filter fan is prolonged, and the failure rate of the system is further reduced.

4. Stirring by a stirring device to avoid impurities from depositing on the bottom of the filtrate collecting tank and being difficult to discharge; the tailing pulp and the recycled filtrate enter the middle part of the thickener to avoid turbidity leakage.

Drawings

Fig. 1 is a schematic block diagram of the structure of the present invention.

In the figure: 1-a thickener, 2-a first pump, 3-a pulp storage tank, 4-a second pump, 5-a disc type pressure filter, 6-a filtrate collecting tank, 7-a third pump, 8-a first air compressor, 9-a second air compressor, 10-a compressed air storage tank, 101-a first ore feeding pipe and 102-a second ore feeding pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

FIG. 1 shows a phosphorite flotation tailing processing system, the discharge gate of the bottom of a thickener 1 is communicated with a first pump 2 through a pipeline, the first pump 2 is communicated with the feed inlet at the top of an ore pulp storage tank 3 through a pipeline, and the discharge gate of the bottom of the ore pulp storage tank 3 is connected with the feed inlet of a disc type pressure filter 5 through a second pump 4. The air inlet of the pressurizing bin of the disc type pressurizing filter 5 is connected with a compressed air storage tank 10 and a first air compressor 8 through an air pipe. The filtrate outlet of the disc type pressure filter 5 is connected with a filtrate collecting tank 6 through a pipeline, a stirring device is arranged in the filtrate collecting tank 6, a third pump 7 is further arranged at the bottom of the filtrate collecting tank, and the third pump 7 is connected with a second ore feeding pipe 102 through a pipeline. The top of the thickener 1 is provided with a first ore feeding pipe 101 and a second ore feeding pipe 102, and outlets of the first ore feeding pipe 101 and the second ore feeding pipe 102 are both positioned in the middle of the thickener 1. The first feeding pipe 101 is connected with a tailing pipe of the flotation production system. The top of the side wall of the thickener 1 is provided with a supernatant overflow port, and the supernatant overflow port is connected with a water-requiring position in the flotation production system through a pipeline.

5 groups of filter discs are arranged in a 5-pressure bin of the disc type pressure filter, the filter discs rotate under a driving device, under the action of compressed air pressure, tailing pulp is adhered to a filter fan of the filter discs to be filtered, filtrate is collected and then is discharged to a filtrate collecting tank 6 from a filtrate outlet, tailings after solid-liquid separation rotate to a scraper position along with the filter discs, a discharge opening is scraped by the scraper, fine materials on filter cloth are blown down to the discharge opening through compressed air in a back blowing valve, tailings remained on the filter cloth are reduced, and the service life of the filter cloth is prolonged. Meanwhile, the filter cloth is periodically cleaned through the online cleaning device on the scraper, the service life of the filter cloth is further prolonged, and the influence on the production efficiency caused by frequent replacement of the filter cloth is avoided.

When the system works, tailing pulp generated by a flotation production system enters a thickener 1 through a first ore feeding pipe 101 for sedimentation and concentration, underflow tailing is pumped into an pulp storage tank 3 through a first pump 2 and then is pumped into a disc type pressure filter 5 through a second pump 4, the pressure in a pressure cabin is increased through compressed air from a first air compressor 8, solid-liquid separation is realized on a filter disc, filtrate enters a filtrate collection tank 6 through a filtrate outlet, solid tailing is scraped off through a scraper, the solid tailing is discharged from a discharge port after the reverse blowing of the compressed air, and the solid tailing is transported to a tailing pond for storage through a conveyor belt or a transport vehicle. Most of supernatant liquor in the thickener 1 is clean water, and the clear water flows out through a supernatant liquor overflow port and returns to a flotation production system for recycling through a pump or a pipeline. Most of the filtrate in the filtrate collecting tank 6 is beneficiation wastewater, and the small part is tailing fine particles, the beneficiation wastewater is pumped into the thickener 1 again through the third pump 7 for secondary sedimentation, and the beneficiation wastewater returns to the flotation production system, so that zero emission of the beneficiation wastewater is realized.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides a phosphorite flotation tailing processing system which characterized in that: the ore pulp flotation device comprises a thickener (1), a first pump (2), an ore pulp storage tank (3), a second pump (4) and a disc type pressure filter (5) which are sequentially connected, wherein a first ore feeding pipe (101) is arranged at the top of the thickener (1), a supernatant overflow port is arranged on the side wall of the thickener (1), the supernatant overflow port is connected with a flotation production system, a filtrate outlet of the disc type pressure filter (5) is connected with a filtrate collecting tank (6), a third pump (7) is arranged in the filtrate collecting tank (6), and an outlet of the third pump (7) is connected with a second ore feeding pipe (102) at the top of the thickener (1); the pressurizing bin of the disc type pressurizing filter (5) is connected with a first air compressor (8), and a back-blowing valve at the discharge port of the disc type pressurizing filter (5) is connected with a second air compressor (9).

2. The phosphate ore flotation tailing processing system of claim 1, characterized in that: a compressed air storage tank (10) is arranged between the first air compressor (8) and the pressurizing bin of the disc type pressurizing filter (5).

3. The phosphate ore flotation tailing processing system of claim 1, characterized in that: and 5 groups of filter discs are arranged in the pressurizing bin of the disc type pressurizing filter (5), and the scrapers on the two sides of each filter disc are provided with online cleaning devices.

4. The phosphate ore flotation tailing processing system of claim 1, characterized in that: a stirring device is arranged in the filtrate collecting tank (6), and a third pump (7) is arranged at the bottom of the filtrate collecting tank (6).

5. The phosphate ore flotation tailing processing system of claim 1, characterized in that: the outlets of the first ore feeding pipe (101) and the second ore feeding pipe (102) are both positioned in the middle of the thickener (1).

6. The phosphate ore flotation tailing processing system of claim 1, characterized in that: and a belt conveyor is arranged below the discharge opening of the disc type pressure filter (5).