CN103058422B - Technique for fluorite mine floatation sewage treatment - Google Patents
Technique for fluorite mine floatation sewage treatment Download PDFInfo
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- CN103058422B CN103058422B CN201310034228.8A CN201310034228A CN103058422B CN 103058422 B CN103058422 B CN 103058422B CN 201310034228 A CN201310034228 A CN 201310034228A CN 103058422 B CN103058422 B CN 103058422B
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Abstract
The invention discloses a technique for fluorite mine floatation sewage treatment. The technique disclosed by the invention uses two deaerating tanks for removing air bubbles in mud, so that tiny solid particles are prevented from being adsorbed onto the air bubbles, and sedimentation and separation effects are improved. The technique disclosed by the invention needs no tailing pond, and by using the technique, the floor space can be reduced by more than 96% in comparison with the existing fluorite mine floatation sewage treatment technique according to a newly built fluorite mine floatation plant, so that land acquisition cost and tailing pond construction cost are saved, and the construction period is shortened; according to the existing floatation plant with tailing pond that is built, high investment for clearing the tailing pond or newly building the tailing pond after the tailing pond is full in future is saved. Compared with a waste water treatment technique using the tailing pond, the technique completely avoids potential environmental protection hazard about waste water leakage in the tailing pond and potential safety hazard about dam break of the tailing pond. The method disclosed by the invention realizes good separation effect, small floor space, low investment and low operation cost.
Description
Technical field
The present invention relates to a kind of fluorite flotation waste water reclamation and utilize technique, relate in particular to a kind of less investment, fluorite flotation waste water treatment process that working cost is low.
Background technology
The main component of fluorite is Calcium Fluoride (Fluorspan), is the basic material of the industry such as hydrofluoric acid, iron and steel, aluminium, pottery, aviation.Natural Fluorite ore deposit is a kind of nonmetalliferous ore, and normal association has the impurity such as carbonate, silicate, quartz, contains Calcium Fluoride (Fluorspan) purity Fluorspar Powder higher, easy to use thereby need to separate to make to impurity through ore dressing.For the fluorite ore of heterogeneity, in floatation process, use different flotation reagents, conventional collecting agent has oleic acid etc., and inhibitor has water glass etc., and sequestrant has soda ash etc.Fluorite ore makes Fluorspar Powder through apparatus processing such as crusher, vibratory screening apparatus, ball mill, flotation machine, thickener, drying machines.At the ball mill workshop section formation ore pulp that adds water, add flotation reagent and clear water before entering flotation machine, Fluorspar Powder enters postorder workshop section after realizing in flotation machine with impurity and separating, and discharges a large amount of waste water containing sand, mud, flotation reagent in flotation machine workshop section simultaneously.The treatment process of fluorite flotation waste water has following several at present: (1), waste water discharge after Tailings Dam natural subsidence; (2), in waste water, add water purification agent (coagulating agent, flocculation agent) to help heavy discharges after Tailings Dam natural subsidence; (3), waste water adds water purification agent (coagulating agent, flocculation agent) and re-uses whizzer, pressure filter processing, water outlet discharge; (4), waste water by swirler, equalizing tank, mixing tank, add water purification agent (coagulating agent and flocculation agent), efficient concentration settling pond, pressure filter processing, clear liquid reuse, tailings enters tailing dam.
Owing to having added the medicaments such as collecting agent, inhibitor, sequestrant in ore pulp before flotation, the flotation waste water of generation is a kind of water that contains the electrically charged suspended substance of colloidal, is difficult for natural sedimentation separation.The supernatant liquor water quality that above-mentioned (1) kind method natural subsidence technique obtains is poor, affects quality product while being back to flotation, not up to standard, contaminate environment when discharge; Need to be in very large Tailings Dam natural sedimentation for a long time, Tailings Dam floor space is large.Above-mentioned (2) kind method add water purification agent (coagulating agent, flocculation agent) help heavy after the chemical feeding quantity of natural subsidence technique large, running cost is higher; Tailings Dam floor space is large.Above-mentioned (3) although kind method can fast processing flotation waste water, and chemical feeding quantity is large, current consumption is large, and running cost is high, and effluent quality is poor, can not be back to flotation or qualified discharge, needs supporting Tailings Dam simultaneously.The clear liquid that above-mentioned (4) kind method produces does not pass through filter process, and effluent quality is unstable, need to use Tailings Dam, and floor space is large, has the environmental protection hidden danger of the waste water leakage in Tailings Dam and the potential safety hazard of Tailings Dam dam break.
Lower, the technology imperfection of existing treatment process technology content above, effluent quality is unstable, and chemical feeding quantity is large, running cost is high, and needs the Tailings Dam of large volume, and floor space is large.So far, also do not have a kind ofly can be in the situation that not using Tailings Dam fluorite flotation wastewater treatment to be become can be back to the technique of two kinds of materials of dry sand that the solid content of flotation can directly transport and recycle at clear water and the water ratio approximately 15% of 10mg/L left and right.
Summary of the invention
For the character of fluorite flotation waste water complicated component, separation difficulty, and existing treatment process running cost is high, effluent quality is poor, have the present situation of environmental protection hidden danger and potential safety hazard, the object of this invention is to provide a kind of fluorite flotation waste water treatment process, in the situation that not using Tailings Dam, make fluorite flotation waste water after this new_type treatment, become two kinds of materials of dry sand that clear water as clear as crystal, that can be back to fluorite and water ratio approximately 15% can directly transport and recycle.
For achieving the above object, technical scheme of the present invention is as follows:
The invention provides a kind of fluorite flotation waste water treatment process, comprise the following steps:
In fluorite flotation waste water suction hydrocyclone, realize separating of sand and mud;
From hydrocyclone, mud out enters No. 1 degassing vessel degasification, and the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, is then extracted in efficient deep wimble thickener, and mud is separated into thin mud and dense mud in efficient deep wimble thickener;
From efficient deep wimble thickener, dense mud out enters medial launder, suction vibrating-dewatering screen together with hydrocyclone sand out; Through the upper dry sand that forms of processing sieve of vibrating-dewatering screen, sieve is lower forms mud, and mud enters No. 1 degassing vessel and carries out later separation;
From efficient deep wimble thickener, thin mud out enters No. 2 degassing vessel degasification, suction strainer together with coagulating agent; Flocculation agent adds in the input duct of first 10 ~ 30 meters of strainer fluid inlet, coagulating agent, flocculation agent and waste water are first mixed in input duct, then in strainer, flocculate, precipitate, filter, clear water reclaims from the top outlet of strainer is flowed out, and the mud that filter bottom is discharged enters No. 1 degassing vessel and carries out later separation.
Preferably, the solid content of described thin mud is 0.8 ~ 6%.
Preferably, the solid content of described dense mud is 50 ~ 60%.
Preferably, described coagulating agent is selected from ferrous sulfate, polymerize aluminum chloride, aluminium iron polychloride or iron trichloride.
Preferably, the concentration of described coagulating agent is 1 ~ 3%.
Preferably, described flocculation agent is selected from cationic polyacrylamide, anionic polyacrylamide, amphiprotic polyacrylamide or non-ionic polyacrylamide.
Preferably, the concentration of described flocculation agent is 0.1 ~ 0.2%.
Preferably, the suspension content of described clear water is 1 ~ 10mg/L.
Preferably, the water ratio of described dry sand is 13 ~ 15%.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
1, the clear water water white transparency obtaining after art breading of the present invention, suspension content is 1 ~ 10mg/L, can be back to flotation and ball milling, saves great lot of water resources, saves the flotation reagents such as collecting agent, inhibitor, sequestrant.
2, process operation expense of the present invention is low.It is more scientific that chemical feeding points is selected, waste water first separates most sand and a part of mud in waste water through hydrocyclone, efficient deep wimble thickener, then add coagulating agent and flocculation agent, because the solid substance that consumes coagulating agent and flocculation agent in waste water now significantly reduces, the pharmaceutical quantities that need to add significantly reduces thereupon; In addition, compared with other equipment that use in current existing technique, facility, the properity of the strainer that the present invention adopts is more suitable for the needs of fluorite flotation wastewater treatment, using strainer only to need to add a small amount of coagulating agent and flocculation agent to make suspended substance form less particle can be removed by strainer, and in current existing technique, other equipment can not be accomplished.The chemical feeding quantity of this technique be tradition add water purification agent (coagulating agent, flocculation agent) help heavy after Tailings Dam natural subsidence technique 10%, to add 20% of other apparatus and process such as the supporting pressure filter of water purification agent (coagulating agent, flocculation agent), whizzer, settling pond, settling tank, can reduce water purification agent (coagulating agent, flocculation agent) usage quantity, for enterprise saves running cost.
3, compared with the technique of the present invention and use pressure filter, whizzer, can reduce power consumption and chemical feeding quantity, reduce wastewater treatment working cost.
4, after art breading of the present invention, can obtain the dry sand that water ratio is 15% left and right, can realize dry method and store up.In some sand, contain the useful element or the non-metallic minerals that are worth recovery, as pyrite, plumbous zinc ore, barite etc., adopt corresponding beneficiation method to be reclaimed, can realize resource to make full use of; Also can directly dry sand be produced into the material of construction such as brick; Can directly sell outer dry sand transportation; Can, by dry sand filling fluorite ore worked-out section, eliminate the potential safety hazard in worked-out section, save safety and drop into, to reclaiming after land restoration, save environmental improvement fund, be conducive to geologic media protection.
5, technique of the present invention does not need Tailings Dam, for newly-built fluorite flotation factory, uses this technique can reduce floor space more than 96% compared with existing fluorite flotation waste water treatment process, saves land expropriation cost, builds Tailings Dam expense, shortens the construction period; For the existing flotation mill that builds up Tailings Dam, save Tailings Dam in the future and be booked the great number investment of rear cleaning Tailings Dam or newly-built Tailings Dam.Compared with using the waste water treatment process of Tailings Dam, this technique has thoroughly been eliminated the environmental protection hidden danger that in Tailings Dam, waste water leaks and the potential safety hazard of Tailings Dam dam break.
6, one-time investment of the present invention is few, and compared with using other fluorite flotation waste water treatment process of Tailings Dam, investment of the present invention is about the former 30 ~ 40%.
7, in technique of the present invention, use two degassing vessels, can remove the bubble in mud, avoided tiny solid particulate to be attached on bubble, strengthened sedimentation and the effect separating.
8, in technique of the present invention, used efficient deep wimble thickener, effect mud, water being separated than common thickener is better, and it is lower that top goes out fluid solid content, and the dense mud solid content in bottom is higher.
Accompanying drawing explanation
Fig. 1 is the schema of fluorite flotation waste water treatment process.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
Strainer used is class's moral strainer that Shanghai Ban De environmental protection equipment company limited produces below, and model is: BD-5 type, and 3.3 meters of diameters, high 6.9 meters, top is cylindrical, and bottom is conical, and there are swash plate, filtration medium, water cap etc. in inside.
Strainer in this technique is a kind of combined-type water treatment unit that Shanghai Ban De environmental protection equipment company limited produces.Collection dosing flocculation, inclined plate sedimentation, the granular filtering medium that floats are filtered into one.The main purpose that designs strainer in technique is the suspended substance of efficiently removing in mud, uses general equipment not accomplish.
In invention, mention No. 1 degassing vessel, No. 2 degassing vessels, its volume is about 1/8 left and right (if flow is Q cube m/h, degassing vessel can be designed to Q/8 cubic meter) of the water yield per hour; Structure is a square or cylindrical open container, and the larger degasifying effect of surface-area is better; Be equivalent to a dashpot, make waste water short stay in groove, the bubble in waste water be overflowed from waste water once, the bubble in waste water is more few is more conducive to remove the solid particulate in waste water.
Embodiment 1
As shown in Figure 1, Fig. 1 is the schema of fluorite flotation waste water treatment process.Take Henan fluorite flotation factory waste water as example, introduce the embodiment of this technique.
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 42603mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 1%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1.5% copperas solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.1% the molecular weight anionic polyacrylamide solution that is 10,000,000 through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 2mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 56%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 13.2%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 2
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 50210mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 0.8%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1% copperas solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.2% the molecular weight anionic polyacrylamide solution that is 10,000,000 through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 6mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 60%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 14.5%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 3
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 47508mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 6%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 3% copperas solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.15% the molecular weight anionic polyacrylamide solution that is 10,000,000 through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 3mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 50%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 13.5%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 4
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 45007mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 3%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 2% copperas solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.15% the molecular weight anionic polyacrylamide solution that is 10,000,000 through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 4mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 52%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 14%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 5
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 42615mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 1.2%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1.5% polymeric aluminum chlorides solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.2% cationic polyacrylamide solution through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 1mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 55%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 13%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 6
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 49856mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 2.6%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 90 liters of 1% polymerize aluminum chloride ferrous solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 350 liters of 0.1% amphiprotic polyacrylamide solution through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 10mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 54%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 15%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 7
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 47620mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 4%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1.5% liquor ferri trichloridis, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 400 liters of 0.1% non-ionic polyacrylamide solution through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 5mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 51.5%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 13.8%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 8
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 47200mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 5%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1.5% liquor ferri trichloridis, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 300 liters of 0.1% cationic polyacrylamide solution through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 5mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 51%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 14.8%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
Embodiment 9
Fluorite flotation waste water (suspension content of fluorite flotation waste water is 48920mg/L) is the flow suction hydrocyclone with 40 cubes ms/h with No. 1 pump, realizes separating of sand and mud, from the top of hydrocyclone, mud is out through No. 1 degassing vessel degasification, the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, then pump into efficient deep wimble thickener through No. 2 pumps, its top thin mud (solid content is 2.3%) is out through No. 2 degassing vessel degasification, simultaneously per hourly be added in that in coagulating agent stirred pot, to be dissolved into concentration be 100 liters of 1.5% polymeric aluminum chlorides solutions, pump into after strainer through No. 3 pumps, in the input duct of strainer, be added in that in flocculation agent stirred pot, to be dissolved into concentration be 350 liters of 0.1% amphiprotic polyacrylamide solution through No. 4 pumps are per hour, in strainer, flocculate, precipitation, filter, clear water reclaims for flotation and ball milling from the top outlet of strainer is flowed out, the suspension content of clear water is 8mg/L.
The mud that filter bottom produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation.The dense mud (solid content is 52%) that the sand that hydrocyclone bottom produces and efficient deep wimble thickener bottom produce all enters medial launder, pump into vibrating-dewatering screen through No. 5 pumps, the mud that its underpart produces enters hydrocyclone No. 1 degassing vessel below and carries out later separation, the water ratio that its top produces dry sand is 14.9%, firmly be held in the hand and can not extrude water, can transport factory with automobile and sell.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (9)
1. a fluorite flotation waste water treatment process, is characterized in that, comprises the following steps:
In fluorite flotation waste water suction hydrocyclone, realize separating of sand and mud;
From hydrocyclone, mud out enters No. 1 degassing vessel degasification, and the mud that vibrating-dewatering screen and strainer are discharged enters No. 1 degassing vessel degasification, is then extracted in efficient deep wimble thickener, and mud is separated into thin mud and dense mud in efficient deep wimble thickener;
From efficient deep wimble thickener, dense mud out enters medial launder, suction vibrating-dewatering screen together with hydrocyclone sand out; Through the upper dry sand that forms of processing sieve of vibrating-dewatering screen, sieve is lower forms mud, and mud enters No. 1 degassing vessel and carries out later separation;
From efficient deep wimble thickener, thin mud out enters No. 2 degassing vessel degasification, suction strainer together with coagulating agent; Flocculation agent adds in the input duct of first 10 ~ 30 meters of strainer fluid inlet, coagulating agent, flocculation agent and waste water are first mixed in input duct, then in strainer, flocculate, precipitate, filter, clear water reclaims from the top outlet of strainer is flowed out, and the mud that filter bottom is discharged enters No. 1 degassing vessel and carries out later separation.
2. fluorite flotation waste water treatment process according to claim 1, is characterized in that: the solid content of described thin mud is 0.8 ~ 6%.
3. fluorite flotation waste water treatment process according to claim 1, is characterized in that: the solid content of described dense mud is 50 ~ 60%.
4. fluorite flotation waste water treatment process according to claim 1, is characterized in that: described coagulating agent is selected from ferrous sulfate, polymerize aluminum chloride, aluminium iron polychloride or iron trichloride.
5. according to the fluorite flotation waste water treatment process described in claim 1 or 4, it is characterized in that: the concentration of described coagulating agent is 1 ~ 3%.
6. fluorite flotation waste water treatment process according to claim 1, is characterized in that: described flocculation agent is selected from cationic polyacrylamide, anionic polyacrylamide, amphiprotic polyacrylamide or non-ionic polyacrylamide.
7. according to the fluorite flotation waste water treatment process described in claim 1 or 6, it is characterized in that: the concentration of described flocculation agent is 0.1 ~ 0.2%.
8. fluorite flotation waste water treatment process according to claim 1, is characterized in that: the suspension content of described clear water is 1 ~ 10mg/L.
9. fluorite flotation waste water treatment process according to claim 1, is characterized in that: the water ratio of described dry sand is 13 ~ 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034228.8A CN103058422B (en) | 2013-01-29 | 2013-01-29 | Technique for fluorite mine floatation sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034228.8A CN103058422B (en) | 2013-01-29 | 2013-01-29 | Technique for fluorite mine floatation sewage treatment |
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| Publication Number | Publication Date |
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| CN103058422A CN103058422A (en) | 2013-04-24 |
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