CN101397162A - Reuse treatment process for direct-reverse flotation waste water of collophane containing silicium and calcium - Google Patents
Reuse treatment process for direct-reverse flotation waste water of collophane containing silicium and calcium Download PDFInfo
- Publication number
- CN101397162A CN101397162A CNA2008101975200A CN200810197520A CN101397162A CN 101397162 A CN101397162 A CN 101397162A CN A2008101975200 A CNA2008101975200 A CN A2008101975200A CN 200810197520 A CN200810197520 A CN 200810197520A CN 101397162 A CN101397162 A CN 101397162A
- Authority
- CN
- China
- Prior art keywords
- waste water
- flotation
- direct
- calcium
- collophane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005188 flotation Methods 0.000 title claims abstract description 50
- 239000002351 wastewater Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 18
- 238000011282 treatment Methods 0.000 title claims abstract description 18
- 239000011575 calcium Substances 0.000 title claims description 16
- 229910052791 calcium Inorganic materials 0.000 title claims description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 63
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract description 4
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 235000017550 sodium carbonate Nutrition 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 238000011284 combination treatment Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000000528 statistical test Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the mineral dressing field of collophanite, in particular to the recycling and processing technology of flotation and reverse flotation waste water of silicon calcium collophanite, which is characterized in that: prior to adding a collector in the flotation operation, NaOH solution is added in the recycled waste water, the amount of the NaOH solution is 0.5kg-1kg/t of waste water. The invention can not only treat waste water in certain amount, but also has simple treating process, the waste water after treatment is recycled in the flotation operation, not only can the flotation index equal to the flow of clean water be obtained, but also the dosage of the flotation medicines such as sodium carbonate and the like can be reduced greatly.
Description
Technical field
The present invention relates to the collophanite ore dressing field, in particular, is the reuse treatment process of direct-reverse flotation waste water of collophane containing silicium and calcium.
Background technology
China's phosphate rock resource is abundant, but lean ore is many, rich ore is few, in proven reserve, low-grade silico-calcium matter collophanite in more than 70% being, this type of ore often need with just-reverse floatation process sorts, and promptly presses down silicon (direct flotation operation) at the alkaline condition phosphorus of floating downward earlier, the froth concentrate that obtains presses down the floating magnesium (reverse flotation work) of phosphorus again under acidic conditions, material is final phosphorus concentrate product in the groove of reverse flotation.But need a large amount of industrial clear water during flotation and produce a large amount of waste water, every according to statistics processing 1t raw ore needs 4～6m
3Clear water, the dressing-works of handling 100kt a year needs water 40～600,000 m
3, for the conserve water resource and reduce the environmental pollution that discharge of wastewater causes, must find economy, effective method of wastewater treatment, the waste water recycling after will handling then is in flotation.
Positive and negative flotation waste water is high very big to the direct flotation influence because of its calcium, magnesium ion and phosphate content, thus must handle, be reduced to their concentration to a certain degree after, just can return the direct flotation use.At present, treatment process relatively more commonly used has following several: a kind of is with milk of lime and Na
2CO
3Come combination treatment, also useful milk of lime and decalcifying agent come combination treatment and heat to more than 50 ℃ the time at ore pulp, help to place an order private Na at heating power
2CO
3Handle etc.
But aforesaid method all has certain weak point, as: milk of lime can only reduce the phosphate radical in the waste water, and treating processes is more loaded down with trivial details, and the utilization ratio of milk of lime is not high yet; Because of waste water is mainly temporary hardness, so during normal temperature flotation, Na
2CO
3The ability that reduces hardness is just very low, can only when heating flotation good effect be arranged; Come deliming also to have the drawback similar with decalcifying agent, and decalcifying agent is generally all very expensive efficiently with milk of lime.
Summary of the invention
Problem to be solved by this invention is to propose a kind of simply, economical, effectively and can reduce the hardness of direct-reverse flotation waste water of collophane containing silicium and calcium and the method for phosphate radical simultaneously at above-mentioned prior art, makes that the waste water after processed can recycle.
The present invention for the solution that problem adopts of the above-mentioned proposition of solution is: the reuse treatment process of direct-reverse flotation waste water of collophane containing silicium and calcium, it is characterized in that before collecting agent is added in the direct flotation operation, and in the waste water of reuse, add NaOH solution.
Press such scheme, the amount of described NaOH solution is a 0.5kg-1kg/ ton waste water.
Press such scheme, described before referring to grinding floating workshop section before the direct flotation operation interpolation collecting agent, reuse again after in advance waste water being focused on NaOH solution.
Press such scheme, the described finger before collecting agent is added in the direct flotation operation, to wherein adding NaOH solution, carried out the technology online treatment when ore mill carries out ore grinding.
Press such scheme, add NaOH solution in described first agitation vat that before collecting agent is added in the direct flotation operation, refers at direct flotation, carry out the technology online treatment.
The present invention can adopt (1) to focus in advance: (concrete amount is shown waste water quality and is decided promptly to add NaOH solution earlier in waste water, not influencing floatation indicators when reaching reuse gets final product, it is excessive to need not), the waste water recycling after will handling then is in ore grinding and flotation.(2) online treatment, general process points has two places: 1. be to add NaOH to grinding classification system; 2. be that NaOH is added in first agitation vat of direct flotation.In short, so long as before collecting agent is added in the direct flotation operation, handle and all can.
Reuse technology principle of the present invention is: contain a large amount of calcium ions in the positive and negative flotation waste water, behind the adding NaOH, under alkaline condition, the phosphate radical in the waste water can generate precipitation with calcium ion and remove, and reaction formula is as follows: 5Ca
2-+ 7OH
-+ 3H
2PO
4 -=Ca
5(OH) (PO
4)
3↓+6H
2O; Meanwhile, after adding NaOH, a large amount of bicarbonate radicals in the waste water also can be because of in conjunction with OH
-And change carbonate into, with sedimentary form the calcium in the waste water, magnesium ion are removed at last, thereby reached the purpose of removing phosphate radical and hardness simultaneously.
The present invention can not only quantitatively handle waste water, and simple, the easy row for the treatment of processes, the waste water after the processing is back to use flotation operation, not only can obtain the floatation indicators suitable, and can significantly reduce the consumption of flotation reagent such as yellow soda ash etc. with the clear water flow process.
Embodiment
In order to understand the present invention better, further set forth content of the present invention below in conjunction with the test example, but content of the present invention not only is confined to the following examples.
Embodiment 1: reuse again after in advance waste water being handled
At Sichuan silico-calcium matter collophanite, adopt the positive reverse floatation process of normal temperature to sort, the index of its clear water test is as follows: as raw ore P
2O
523.01%, during MgO 3.09%, is under-200 orders 93% condition, can obtains concentrate P at grinding fineness
2O
531.05%, MgO 1.09%, concentrate yield 64.18%, P
2O
5The rate of recovery 86.61%.If positive and negative flotation waste water is not handled direct reuse, then index is on duty mutually: under identical grinding fineness, the direct flotation concentrate grade only is P
2O
525.78%, P
2O
5The rate of recovery only is 43.75%.This waste water hardness is with CaCO
3Count 484.4mg/L, phosphate content is 20.95mg/L, waste water is the water treatment of 1kg/ ton with NaOH by consumption after, waste water hardness is reduced to 46.28mg/L, phosphate radical is reduced to 0.074mg/L.Waste water recycling after the processing can be obtained following index to ore grinding and flotation: raw ore P
2O
523.00%, during MgO 3.09%, is under-200 orders 93% condition, can obtains concentrate P at grinding fineness
2O
531.05%, MgO 0.80%, concentrate yield 64.52%, P
2O
5The rate of recovery 87.09%.As seen the waste water recycling after handling does not influence floatation indicators substantially.
Embodiment 2: waste water is handled reuse at ore grinding or flotation workshop section
At the silico-calcium matter collophanite of embodiment 1, waste water is not anticipated, and adds NaOH and be selected at floating (ore grinding and the direct flotation) workshop section of mill, and addition is a 1kg/ ton water, under identical floatation process and grinding fineness, can obtain following index: raw ore P
2O
523.00%, during MgO 3.09%, can obtain concentrate P
2O
531.01%, MgO 0.88%, concentrate yield 64.32%, P
2O
5The rate of recovery 86.86%.As seen, when using the inventive method to handle, process points can be freely selected,, all the ideal flotation index can be obtained as long as add NaOH solution at first agitation vat of direct flotation.
Embodiment 3:
The medicament expense usefulness of statistical test example 1, sodium carbonate amount is that 6.0kg/T, water glass consumption are that 5.0kg/T, collector dosage are that 1.4kg/T, sulfuric acid consumption are 26.4kg/T during clear water.Sodium carbonate amount is that 3.6kg/T, water glass consumption are that 5.0kg/T, collector dosage are that 1.3kg/T, sulfuric acid consumption are 25.6kg/T during backwater.The result that total medicament expense is used is as follows: being 58.18 yuan/T raw ore during clear water, is 52.53 yuan/T raw ore during backwater.As seen,, after flotation, can also save medicament expense and use with the waste water recycling after the NaOH processing.
Claims (5)
1, the reuse treatment process of direct-reverse flotation waste water of collophane containing silicium and calcium is characterized in that before collecting agent is added in the direct flotation operation, added NaOH solution in the waste water of reuse.
2, by the reuse treatment process of the described direct-reverse flotation waste water of collophane containing silicium and calcium of claim 1, the amount that it is characterized in that described NaOH solution is a 0.5kg-1kg/ ton waste water.
3, press the reuse treatment process of claim 1 or 2 described direct-reverse flotation waste water of collophane containing silicium and calcium, it is characterized in that describedly before collecting agent is added in the direct flotation operation, referring to before the floating workshop section of mill reuse again after in advance waste water being focused on NaOH solution.
4, press the reuse treatment process of claim 1 or 2 described direct-reverse flotation waste water of collophane containing silicium and calcium, it is characterized in that describedly before collecting agent is added in the direct flotation operation, referring to when ore mill carries out ore grinding, to wherein adding NaOH solution, carry out the technology online treatment.
5, by the reuse treatment process of claim 1 or 2 described direct-reverse flotation waste water of collophane containing silicium and calcium, it is characterized in that adding NaOH solution in described first agitation vat that before collecting agent is added in the direct flotation operation, refers at direct flotation, carry out the technology online treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101975200A CN101397162B (en) | 2008-11-04 | 2008-11-04 | Reuse treatment process for direct-reverse flotation waste water of collophane containing silicium and calcium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101975200A CN101397162B (en) | 2008-11-04 | 2008-11-04 | Reuse treatment process for direct-reverse flotation waste water of collophane containing silicium and calcium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101397162A true CN101397162A (en) | 2009-04-01 |
| CN101397162B CN101397162B (en) | 2010-12-08 |
Family
ID=40516033
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101975200A Expired - Fee Related CN101397162B (en) | 2008-11-04 | 2008-11-04 | Reuse treatment process for direct-reverse flotation waste water of collophane containing silicium and calcium |
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| Country | Link |
|---|---|
| CN (1) | CN101397162B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020377A (en) * | 2010-10-15 | 2011-04-20 | 中国海洋石油总公司 | Method for treating collophanite positive and reverse flotation beneficiation wastewater |
| CN102753485A (en) * | 2010-02-16 | 2012-10-24 | 纳尔科公司 | Sulfide flotation aid |
| CN103253750A (en) * | 2013-05-23 | 2013-08-21 | 云南三明鑫疆矿业有限公司 | Recycling treatment technique of direct flotation concentrate and tailing wastewater of collophane |
| CN103880135A (en) * | 2014-03-28 | 2014-06-25 | 中蓝连海设计研究院 | Treatment method of wastewater generated during phosphorus ore direct and reverse flotation |
-
2008
- 2008-11-04 CN CN2008101975200A patent/CN101397162B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753485A (en) * | 2010-02-16 | 2012-10-24 | 纳尔科公司 | Sulfide flotation aid |
| CN102753485B (en) * | 2010-02-16 | 2015-03-11 | 纳尔科公司 | Auxiliary method for sulfide flotation |
| CN102020377A (en) * | 2010-10-15 | 2011-04-20 | 中国海洋石油总公司 | Method for treating collophanite positive and reverse flotation beneficiation wastewater |
| CN102020377B (en) * | 2010-10-15 | 2012-09-05 | 中国海洋石油总公司 | Method for treating collophanite positive and reverse flotation beneficiation wastewater |
| CN103253750A (en) * | 2013-05-23 | 2013-08-21 | 云南三明鑫疆矿业有限公司 | Recycling treatment technique of direct flotation concentrate and tailing wastewater of collophane |
| CN103253750B (en) * | 2013-05-23 | 2014-07-02 | 云南三明鑫疆磷业股份有限公司 | Recycling treatment technique of direct flotation concentrate and tailing wastewater of collophane |
| CN103880135A (en) * | 2014-03-28 | 2014-06-25 | 中蓝连海设计研究院 | Treatment method of wastewater generated during phosphorus ore direct and reverse flotation |
| CN103880135B (en) * | 2014-03-28 | 2015-12-09 | 中蓝连海设计研究院 | A kind for the treatment of process of phosphorus ore direct reverse flotation waste water |
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| Publication number | Publication date |
|---|---|
| CN101397162B (en) | 2010-12-08 |
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