CN202129140U - Coal slime water classified concentration device - Google Patents

Abstract

The utility model discloses a coal slime water classified concentration device, comprising a pool body, a bridge stand at the top of the pool body, a rotating frame in the pool body and a transmission unit which is disposed at the upper part of the pool body to drive the rotating frame to rotate. The center of the pool body is equipped with a liquid-solid fluidized-bed cylinder body, the upper part of which is provided with a guide cylinder. The rotating frame is arranged at the external of the liquid-solid fluidized-bed cylinder body. A concentration sensor is arranged in the liquid-solid fluidized-bed cylinder body and is connected with a controller. A liquid distributor is disposed at the lower part of the liquid-solid fluidized-bed cylinder body. A conical guide groove is provided below the liquid distributor. A coarse-particle bottom current discharging valve is disposed at a discharge hole of the conical guide groove. The coal slime water classified concentration device of the utility model overcomes the defects of condensers used in the first stage of the two-stage-condensing and two-stage-recycling coal slime process, and is simple in structure, small in occupation area and low in capital construction cost.

Description

A kind of black water classification enrichment facility

Technical field

The utility model relates to a kind of black water classification enrichment facility, is particularly useful for two sections and concentrates two sections processing of reclaiming black water.

Background technology

It is the important step in the programing in coal preparation operation that black water is handled, and main effect is: the one, realize that reclaim coal slime inside, the wash water closed cycle, and maximally utilise coal resources and conserve water resource, realize environmental protection; The 2nd, obtain clean as far as possible recirculated water, be gravity separation technology and the good working condition of floatation process creation.General coal preparation plant adopts single hop to concentrate, reclaims technology, with concentration basin black water is carried out concentrating clarifying, and overflow is as recirculated water, and underflow is reclaimed by filter press.Not enough below this technology exists in production practices: the filter cake moisture height is easy to cohere agglomerating, can not directly be blended into middle coal; Fine clay class dirt content in coal slime for a long time; The processed in units amount of filter press is extremely low; Can't in time reclaim whole coal slimes, cause the thin mud of a large amount of high ashes in the wash water system, to circulate and gather, wash water concentration constantly increases; Cause chain reaction, vicious circle, have a strong impact on gravity separation and floatation process effect; Some coal preparation plant is owing to some aspect reason, and coarse granule control is bad, a large amount of in the production coal slime>the coal grain of 0.5mm gets into filter press, and filter cloth shortens service life, influences its operate as normal; Because the filter press disposal ability is low, Large Coal Washing Plant needs the platform number many, and the factory building volume is big, has increased capital construction and producing cost.In the Coal Cleaning by Use of Cyclones factory that heavily is situated between, the magnetic tailing of middle coal and spoil gets into slurry circulating system, and it is more outstanding that the concentrated drawback that reclaims of single hop shows.To this; Many coal preparation plants have taked two sections to concentrate two sections recovery coal slime technologies; Classified cyclone of the underflow of first section thickener and coarse slime dehydration equipment reclaim the coal slime than coarseness; The overflow of first section thickener gets into second section thickener, and the underflow of second section thickener reclaims fine coal slurry through the tail coal filter press, and obtains peace and quiet recirculated water.The subject matter that this technology exists is: 1. the hydraulic classiciation granularity of first section thickener and underflow density should not be controlled; 2. one section thickener working condition is influenced greatly by ature of coal situation and treating capacity, and is relatively harsher to follow-up coarse slime dehydration equipment and technological requirement; 3. the overflow of first section thickener gets into two sections and leans on the gravity flow mode both need the discrepancy in elevation, and capital construction is difficulty relatively, and expense is high; Lean on pump to carry, need not the discrepancy in elevation but power consumption is big; 4. the floor space of one section use thickener is big, and capital expenditure is big.

Summary of the invention

Technical problem: the purpose of the utility model is the weak point that overcomes in the prior art, and a kind of simple in structure, floor space is little, capital expenditure is little, grading effect is good black water classification enrichment facility is provided.Technical scheme: the black water classification enrichment facility of the utility model; Comprise the pond body, be located at body top, pond crane span structure, be located at the rotating turret in the body of pond and be located at body top, pond and drive the transmission device that rotating turret rotates; Described pool center is provided with liquid-solid fluid bed cylindrical shell, and the top of liquid-solid fluid bed cylindrical shell is provided with guide shell, and described rotating turret is located at the outside of liquid-solid fluid bed cylindrical shell; Be provided with the concentration sensor that links to each other with controller in the liquid-solid fluid bed cylindrical shell; The bottom of liquid-solid fluid bed cylindrical shell is provided with fluid distributor, and the below of fluid distributor is provided with the taper deflector chute, and taper deflector chute discharge gate place is provided with the underflow blow-off valve.

Beneficial effect: owing to adopted technique scheme; The utility model has overcome two sections and has concentrated two sections defectives that reclaim first section concentrated use thickener existence in the coal slime technology, uses liquid-solid fluid bed replacement thickener to carry out hydraulic classiciation, combines with thickener liquid-solid fluid bed; When liquid-solid fluid bed when carrying out hydraulic classiciation; Partition size can be controlled by ascending current, and underflow density is by liquid-solid fluid bed underflow blow-off valve control, because partition size and underflow density are controlled; Follow-up dehydration equipment is under the nominal situation, does not influence productive rate and moisture that coarse slime reclaims.Liquid-solid fluid bed overflow overflows from cylindrical shell, and evenly distributing gets into guide shell, has reduced pan feeding speed, and reducing influences the thickener effect of settling; Only, simplified two sections concentration technologies greatly with an equipment liquid-solid fluidisation of just having accomplished coal slime and the technology that concentrates, not only simple in structure but also significantly reduced floor space, reduced capital expenditure, in the present technique field, have practicality widely.

Description of drawings

Fig. 1 is the structural representation of the utility model

Among the figure: 1-feed inlet barrel, the liquid-solid fluid bed cylindrical shell of 2-, 3-concentration sensor, 4-controller, 5-fluid distributor; 6-coarse granule underflow blow-off valve, the 7-crane span structure, the 8-transmission device, the 9-guide shell, 10-harrows frame; The 11-rotating turret, 12-pond body, 13-fine grained underflow delivery pipe, 14-taper deflector chute.

The specific embodiment

Instance below in conjunction with in the accompanying drawing further describes the utility model:

As shown in Figure 1, the black water classification enrichment facility of the utility model mainly is made up of feed inlet barrel 1, liquid-solid fluid bed cylindrical shell 2, concentration sensor 3, controller 4, fluid distributor 5, underflow blow-off valve 6, transmission device 8, guide shell 9, rotating turret 11 and pond body 12.Liquid-solid fluid bed cylindrical shell 2 is located at pond body 12 centers, and guide shell 9 is installed on the top of liquid-solid fluid bed cylindrical shell 2, and feed inlet barrel 1 is installed in the center upper portion position of liquid-solid fluid bed cylindrical shell 2, and outside feeding pipe and feed inlet barrel 1 tangent line join.The top of pond body 12 is provided with crane span structure 7; The bottom of pond body 12 is provided with a plurality of underflow delivery pipes 13; Transmission device 8 is made up of motor and decelerator and is fixed on the crane span structure 7, and transmission device 8 connects rotating turrets 11, and rotating turret 11 is sleeved on the outside of liquid-solid fluid bed cylindrical shell 2; Drive rotating turret 11 and drive around liquid-solid fluid bed cylindrical shell 2 rotations, be fixed with the rake frame 10 that has a plurality of coal slime scraper plates on the excircle of rotating turret 11 through transmission device 8; The bottom of liquid-solid fluid bed cylindrical shell 2 is provided with fluid distributor 5, and the below of fluid distributor 5 is provided with taper deflector chute 14, and taper deflector chute 14 discharge gate places are equipped with coarse granule underflow blow-off valve 6.The top of liquid-solid fluid bed cylindrical shell 2 is provided with the concentration sensor 3 that the lower end is deep into its middle and lower part, and concentration sensor 3 connects controller 4, constitutes liquid-solid fluid bed concentration automatic control system by concentration sensor 3, controller 4 and underflow blow-off valve 6.Signal through concentration sensor 3 output 4-20mA; Be transferred to controller 4 through holding wire; Controller 4 compares the signal signal value corresponding with concentration set point that receives, and regulation and control are installed in the aperture of underflow pipeline upper base stream blow-off valve 6, and is transferred to underflow blow-off valve 6 through holding wire; Give controller 4 with signal feedback more afterwards, underflow density maintains in the setting range the most at last.The fluid distributor form that fluid distributor 5 adopts multitube distributor and lateral flow type distributor to combine produces uniform ascending current through fluid distributor, controller flow controlled amount system partition size.

The course of work: central coal magnetic tailing, spoil magnetic tailing and floating tail-coal feed feed inlet barrel 1 through the feeding pipe tangent line; The ascending current that produces with fluid distributor 5 meets, and produces the hindered falling effect, though these material density are close; It is bigger that but granularity differs; Carry out classification by granularity, coarse granule sinks to the bottom of liquid-solid fluid bed cylindrical shell 2, and fine grained rises to the top of liquid-solid fluid bed cylindrical shell 2.Flow of inlet water control partition size through fluid distributor 5; Coarse granule becomes underflow and gets into follow-up coarse slime dehydration; The fine grained uniform and stable overflows to guide shell 9, is deep into the bottom of pond body 12 by guide shell 9 water conservancy diversion, and fine grained carries out concentration and settlement in pond body 12; Be deposited in fine coal slurry at the bottom of the pond is scraped pond body 12 by the scraper plate on the rake frame 10 central authorities; Rake frame 10 is rotated around center line through guide shell 9 and rotating turret 10 drives by the transmission device 8 that is installed on the crane span structure 7, scrapes the fine coal slurry that gets collection and is transported to the filter press recovery by thickener underflow delivery pipe 13 through pump, and the thickener overflow of clarification gets into circulating water pool becomes recirculated water.

Claims (1)

1. black water classification enrichment facility; Comprise pond body (12), be located at pond body (12) top crane span structure (7), be located in the pond body (12) rotating turret (11) be located at pond body (12) top and drive the transmission device (8) of rotating turret (11) rotation; It is characterized in that: described pond body (12) center is provided with liquid-solid fluid bed cylindrical shell (2); The top of liquid-solid fluid bed cylindrical shell (2) is provided with guide shell (9); Described rotating turret (11) is located at the outside of liquid-solid fluid bed cylindrical shell (2); Be provided with the concentration sensor (3) that links to each other with controller (4) in the liquid-solid fluid bed cylindrical shell (2); The bottom of liquid-solid fluid bed cylindrical shell (2) is provided with fluid distributor (5), and the below of fluid distributor (5) is provided with taper deflector chute (14), and taper deflector chute (14) discharge gate place is provided with coarse granule underflow blow-off valve (6).

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