CN110482920A - A kind of method flotation phosphate tailing purification and prepare concrete segment - Google Patents
A kind of method flotation phosphate tailing purification and prepare concrete segment Download PDFInfo
- Publication number
- CN110482920A CN110482920A CN201910833190.8A CN201910833190A CN110482920A CN 110482920 A CN110482920 A CN 110482920A CN 201910833190 A CN201910833190 A CN 201910833190A CN 110482920 A CN110482920 A CN 110482920A
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- tailing
- phosphorus
- flotation
- flotation phosphate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
A kind of method flotation phosphate tailing purification and prepare concrete segment, it is the pH that flotation phosphate Tailings Slurry is adjusted with alkaline calcium material, make water-soluble phosphorus form insoluble substance to be fixed in phosphorus tailing, and phosphorus tailing is washed with the phosphorus Tailings Slurry filtered fluid after neutralizing, make the insoluble substance discharge of sulfate formation, purified flotation tailing and cement, sand, the substances such as rubble are agitated, vibration moulding, small-sized ordinary concrete building block is made in the techniques such as maintenance, the present invention carries out resource utilization to phosphorus tailing, without carrying out drying and grinding to phosphorus tailing, manufactured one hand tile is without scum, indices reach GB/T 8239-2014 standard requirements, improve Business Economic Benefit.
Description
Technical field
The invention belongs to building material technical fields, and in particular to flotation phosphate tailing purifies and prepare the side of concrete segment
Method.
Background technique
China's phosphate rock resource is compared with horn of plenty, but the phosphorus ore that can directly utilize is more rare, is largely mid low grade phosphate rock,
It needs further to handle production capacity and be utilized.Phosphorus tailing is the solid waste that phosphorus ore is discharged after ore dressing.As China passes through
The lasting high growth of Ji, the yield of phosphorus ore are also continuing to increase.The comprehensive utilization ratio of China's phosphorus tailing only has 7% left side at present
The right side, a large amount of tailing can only be deposited in Tailings Dam for a long time.If the mode of stockpiling is improper, a large amount of phosphorus tailings of stockpiling are in stockpiling
In the process may water to surrounding, soil, vegetation produce serious influence, or even threaten the health of people and animals.
Can not only it turn waste into wealth in phosphorus tailing containing recyclable resource, the comprehensive utilizations of phosphorus tailing such as a large amount of phosphorus, magnesium, but also can
With reduction " three wastes " discharge, the pollution to environment is reduced, avoids occupying valuable land resource.Phosphorus tailing is recycled in research in China
In terms of middle resource, certain progress is had been achieved for, while handling phosphorus tailings impoundment problem, preferable economy can be obtained
Benefit.But it is limited to current Technological Economy bottleneck, many mineral are difficult to recycle, and still can not after comprehensive utilization of tailing
The secondary tailing of the generation avoided.With the lasting propulsion of national Ecological Civilization Construction, how economical and efficient to phosphorus tailings comprehensive
Using becoming phosphorous chemical industry enterprise urgent problem to be solved.
Multidigit scientific worker has done a large amount of research in terms of preparing construction material using phosphorus tailing, phosphorus ore slag, China
Patent CN 103588451B reports a kind of phosphorus slag-phosphorus tailing foam concrete building block and preparation method thereof, but this method pair
Phosphorus tailing need to be dried and the granularity of phosphorus tailing is necessarily less than 100 mesh, a large amount of energy must be consumed in actual production process
Source increases manufacturing cost, is not also described to manufactured mixed mud building block frosting problem, limits phosphorus tailing in the field
It is widely popularized.
Summary of the invention
It is an object of the present invention to solve the problem of complex utilization of phosphorus tailing, a kind of flotation phosphate tailing purification and system are provided
The method of standby concrete segment, the present invention directly comprehensively utilize wet phosphorus tailing, and process flow is simple, without drying, filling
Divide using the moisture in tailing, implementation cost is low, phosphorus tailing can not only be turned waste into wealth, and improves the economic benefit of enterprise, right
Environmental protection more has profound significance.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of method flotation phosphate tailing purification and prepare concrete segment comprising the steps of:
(1) pH to 4~6 of flotation phosphate Tailings Slurry is adjusted with alkaline calcium material；
(2) flotation phosphate Tailings Slurry is separated by solid-liquid separation；
(3) filtrate after separation of solid and liquid is neutralized to pH with alkaline calcium material is 9~11, and is filtered；
(4) the phosphorus tailing after being separated by solid-liquid separation is washed with the filtrate after neutralizing；
(5) the techniques systems such as the substances such as purified flotation phosphate tailing and cement, sand, rubble are agitated, vibration moulding, maintenance
At one hand tile, wherein 10~25 parts of cement, 20~75 parts of sand, 0~35 part of rubble, 30~70 parts of flotation phosphate tailing；
Wherein, the alkaline calcium material refers to one of calcium carbonate, lime, milk of lime or more than one mixing
Object；
Wherein the flotation phosphate tailing refers to, the solid waste that phosphorus ore is discharged by flotation.
Purified flotation phosphate tailing of the present invention, moisture content content are 35%~70%, water-soluble sulfate radical content
0.1%~1.0%, water-soluble P2O5Content is lower than 0.05%, and content described above refers both to mass percentage.
One hand tile of the present invention meets without scum, and indices reach GB/T 8239-2014 standard requirements.
The principle of the present invention is:
It needs sulfuric acid is added during phosphate rock floating and adjusts pH values of pulp, fluorapatite, calcium carbonate in sulfuric acid and phosphorus ore,
The substances such as magnesium carbonate generate rubble cream and water-soluble sulfate.Reaction equation is as follows:
5H2SO4+Ca5F(PO4)3+2H2O=5CaSO4·2H2O+3H3PO4+HF↑
H2SO4+CaCO3+H2O=CaSO4·2H2O+CO2↑
H2SO4+MgCO3=MgSO4+H2O+CO2↑
Chemical analysis shows: the techniques such as the substances such as flotation phosphate tailing and cement, sand, rubble are agitated, vibration moulding, maintenance
One hand tile scum, the mainly water-soluble P due to reaction generation is made2O5And sulfate is in course of hardening, with
The migration evaporation of moisture can gradually be precipitated caused by crystallization.
" scum " not only influences the appearance of concrete segment, or even will cause crystallographic expansion pressure influence mixed mud building block
Intensity leads to poor attachment.The present invention makes most of solubility P in ore pulp by adjusting the pH of phosphorus Tailings Slurry2O5It is formed insoluble
Property precipitating be fixed in tailing, and filtrate is further neutralized, deviates from the soluble sulfate radical in phosphorus tailing, then with after neutralization
Filtrate washing phosphorus tailing make solubility P in phosphorus tailing2O5And sulfate is deviate from substantially, achievees the purpose that purify phosphorus tailing.Reaction
Equation is as follows:
H3PO4+Ca(OH)2=CaHPO4·2H2O↓
MgSO4+Ca(OH)2=CaSO4·2H2O↓+Mg(OH)2↓
The soluble P contained in purified flotation phosphate tailing2O5It has been fixed in phosphorus tailing, the neutralized heel row of sulfate
Out, will not again with mixed mud building block in hardening process with moisture migration precipitation crystallize.On the other hand, after neutralizing
Filtrate washing phosphorus tailing in the moisture that contains no longer contain acidic materials, purified phosphorus tailing is without drying
One hand tile directly is made with techniques such as the substances such as cement, sand, rubble are agitated, vibration moulding, maintenances.
The beneficial effects of the present invention are:
1, after flotation phosphate tailing is by neutralizing purification, the water-soluble P in phosphorus tailing2O5, water-soluble sulfate radical be each attached to tail
In mine, the concrete segment generation scum phenomenon that insoluble substance avoids the production of phosphorus tailing is formed；
2, without carrying out drying and grinding to phosphorus tailing, the Natural Water in phosphorus tailing point is made full use of to greatly save production
The energy consumption of process, reduces production cost；
3, present invention process process is simple, and without adding additive, manufactured normal concrete building block meets GB/T
8239-2014 standard.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below with reference to embodiment to of the invention
Essential characteristics and advantage are described further.
Percentage composition as described below refers both to mass percentage.
Embodiment one
100kg flotation tailing pulp is taken, the pH to 5.5 that milk of lime adjusts flotation tailing pulp is added under agitation, by phosphorus
Tailings Slurry is filtered, and filtrate adjusts pH to 10.5 with milk of lime, and the filtrate after neutralization is filtered, and washs phosphorus tail with filtrate
Mine；62 parts of purified flotation phosphate tailing, 15 parts of cement, 30 parts of sand, 15 parts of rubble agitated, 15 days vibration mouldings, maintenance systems
At small-sized solid block.
Phosphorus tailing moisture content content is 35.48%, water-soluble sulfate radical content 0.27%, water-soluble P2O5Content 0.02%.
Common compact sealed concrete solid building block after conserving, sample index are as follows:
Embodiment a sample index
Embodiment two
100kg flotation tailing pulp is taken, the pH to 5.5 that milk of lime adjusts flotation tailing pulp is added under agitation, by phosphorus
Tailings Slurry is filtered, and filtrate adjusts pH to 10.5 with milk of lime, and the filtrate after neutralization is filtered, and washs phosphorus tail with filtrate
Mine；52 parts of purified flotation phosphate tailing, 15 parts of cement, 40 parts of sand, 15 parts of rubble agitated, 15 days vibration mouldings, maintenance systems
At small-sized solid block.
Phosphorus tailing moisture content content is 42.31%, water-soluble sulfate radical content 0.23%, water-soluble P2O5Content 0.04%.
Common compact sealed concrete solid building block after conserving, sample index are as follows:
Two sample index of embodiment
Embodiment three
100kg flotation tailing pulp is taken, the pH to 5.5 that milk of lime adjusts flotation tailing pulp is added under agitation, by phosphorus
Tailings Slurry is filtered, and filtrate adjusts pH to 10.5 with milk of lime, and the filtrate after neutralization is filtered, and washs phosphorus tail with filtrate
Mine；52 parts of purified flotation phosphate tailing, 15 parts of cement, 35 parts of sand, 20 parts of rubble agitated, 15 days vibration mouldings, maintenance systems
At small-sized hollow building block.
Phosphorus tailing moisture content content is 45.18%, water-soluble sulfate radical content 0.37%, water-soluble P2O5Content 0.03%.
Common compact concrete hollow block after conserving, sample index are as follows:
Three sample index of embodiment
Example IV
100kg flotation tailing pulp is taken, the pH to 5.5 that milk of lime adjusts flotation tailing pulp is added under agitation, by phosphorus
Tailings Slurry is filtered, and filtrate adjusts pH to 10.5 with milk of lime, and the filtrate after neutralization is filtered, and washs phosphorus tail with filtrate
Mine；70 parts of purified flotation phosphate tailing, 15 parts of cement, 25 parts of sand, 10 parts of rubble agitated, 15 days vibration mouldings, maintenance systems
At small-sized hollow building block.
Phosphorus tailing moisture content content is 31.43%, water-soluble sulfate radical content 0.25%, water-soluble P2O5Content 0.02%.
Common compact concrete hollow block after conserving, sample index are as follows:
Example IV sample index
Reference examples
100kg flotation tailing pulp is taken, phosphorus Tailings Slurry is filtered, 52 parts of filtered flotation phosphate tailing, 15 parts of cement, sand
35 parts, 10 parts of rubble agitated, small-sized hollow building block and small-sized solid block is made in 15 days in vibration moulding, maintenance.
Phosphorus tailing moisture content content is 45.43%, water-soluble sulfate radical content 2.48%, water-soluble P2O5Content 0.40%.
Common compact concrete hollow block and small-sized solid block after conserving, sample index are as follows:
Reference examples sample index
Claims (2)
1. a kind of method flotation phosphate tailing purification and prepare concrete segment, which is characterized in that comprise the steps of:
(1) pH to 4~6 of flotation phosphate Tailings Slurry is adjusted with alkaline calcium material；
(2) flotation phosphate Tailings Slurry is separated by solid-liquid separation；
(3) filtrate after separation of solid and liquid is neutralized to pH with alkaline calcium material is 9~11, and is filtered；
(4) the phosphorus tailing after being separated by solid-liquid separation is washed with the filtrate after neutralizing；
(5) techniques such as the substances such as purified flotation phosphate tailing and cement, sand, rubble are agitated, vibration moulding, maintenance are made small
Type building block, wherein 10~25 parts of cement, 20~75 parts of sand, 0~35 part of rubble, 30~70 parts of flotation phosphate tailing；
Wherein, the alkaline calcium material refers to one of calcium carbonate, lime, milk of lime or more than one mixture；
Wherein the flotation phosphate tailing refers to, the solid waste that phosphorus ore is discharged by flotation.
2. a kind of method flotation phosphate tailing purification and prepare concrete segment according to claim 1, which is characterized in that
The purified flotation phosphate tailing, moisture content content are 35%~70%, water-soluble sulfate radical content 0.1%~1.0%, water
Dissolubility P2O5Content is lower than 0.05%, and content described above refers both to mass percentage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910833190.8A CN110482920B (en) | 2019-09-04 | 2019-09-04 | Method for purifying flotation phosphorus tailings and preparing concrete building blocks |
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| CN201910833190.8A CN110482920B (en) | 2019-09-04 | 2019-09-04 | Method for purifying flotation phosphorus tailings and preparing concrete building blocks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921515A (en) * | 2022-11-09 | 2023-04-07 | 武汉轻工大学 | Curing treatment method for heavy metal contaminated soil |
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| CN103588451A (en) * | 2013-11-26 | 2014-02-19 | 武汉工程大学 | Phosphorus slag-phosphate tailing foam concrete block and making method thereof |
| CN103922372A (en) * | 2014-04-11 | 2014-07-16 | 武汉工程大学 | Method for recovering phosphorus in phosphate tailings with high magnesium content and preparing magnesium sulfate by adopting indirect sulfuric acid method |
| CN105237030A (en) * | 2015-09-11 | 2016-01-13 | 三峡大学 | Phosphorite ore beneficiation tailings cast-in-situ foam concrete mixing material and preparation method thereof |
| CN108484051A (en) * | 2018-05-17 | 2018-09-04 | 宜都兴发化工有限公司 | A method of it is prepared with phosphate ore flotation tailings non-burning brick |
| CN108530036A (en) * | 2018-06-14 | 2018-09-14 | 贵州永合益环保科技有限公司 | A kind of technique preparing environmental protection brick using phosphorite tailings |
| CN109292744A (en) * | 2018-09-04 | 2019-02-01 | 安徽六国化工股份有限公司 | A kind of method that middle-low grade phosphate produces phosphoric acid by wet process and half water ardealite of α |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2003134947A (en) * | 2001-05-02 | 2005-05-10 | Чарльз Д. ДЖЭКЬЮЭЙЗ (US) | BUILDING AND OTHER MATERIALS CONTAINING BOXITE TAILS SUBJECT TO TECHNOLOGICAL PROCESSING AND METHOD FOR PRODUCING MATERIALS |
| CN103588451A (en) * | 2013-11-26 | 2014-02-19 | 武汉工程大学 | Phosphorus slag-phosphate tailing foam concrete block and making method thereof |
| CN103922372A (en) * | 2014-04-11 | 2014-07-16 | 武汉工程大学 | Method for recovering phosphorus in phosphate tailings with high magnesium content and preparing magnesium sulfate by adopting indirect sulfuric acid method |
| CN105237030A (en) * | 2015-09-11 | 2016-01-13 | 三峡大学 | Phosphorite ore beneficiation tailings cast-in-situ foam concrete mixing material and preparation method thereof |
| CN108484051A (en) * | 2018-05-17 | 2018-09-04 | 宜都兴发化工有限公司 | A method of it is prepared with phosphate ore flotation tailings non-burning brick |
| CN108530036A (en) * | 2018-06-14 | 2018-09-14 | 贵州永合益环保科技有限公司 | A kind of technique preparing environmental protection brick using phosphorite tailings |
| CN109292744A (en) * | 2018-09-04 | 2019-02-01 | 安徽六国化工股份有限公司 | A kind of method that middle-low grade phosphate produces phosphoric acid by wet process and half water ardealite of α |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921515A (en) * | 2022-11-09 | 2023-04-07 | 武汉轻工大学 | Curing treatment method for heavy metal contaminated soil |
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