CN109821278A - For improving the composition of solid particles sediment effect, comprising its dense synergist and preparation method and application - Google Patents
For improving the composition of solid particles sediment effect, comprising its dense synergist and preparation method and application Download PDFInfo
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Abstract
The present invention relates to filling in mine technical fields, specifically disclose a kind of composition for improving solid particles sediment effect, the application of the composition, dense synergist comprising the composition and preparation method thereof and application method.The composition is in terms of mass fraction including following components: 16~38 parts of complexing components, 14~27 parts of bleed component, 24~51 parts of dispersed component, 9~22 parts of linear ion polymers compositions；Wherein, the dispersed component is mass ratio (2~4): (1~2): the mixture of 1 maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium, and the mass ratio of the dispersed component and linear ion polymers compositions is 2~3:1.The composition can destroy Floe structure, discharge Free water, improve the concentration of solid after sedimentation.The composition can be used for improving thickener underflow concentration, and 10~20% solution is made in dissolution after each component is mixed, and preparation method is simple, easy to use.
Description
Technical field
The present invention relates to filling in mine technical fields, and in particular to a kind of for improving the combination of solid particles sediment effect
Object, the application of the composition, dense synergist comprising the composition and preparation method thereof and application method.
Background technique
It is a kind of important tailings dehydration concentration work by the dewatering process of core of concentrator in filling in mine field
Skill.Dense dehydration is carried out by the low concentration last mortar that dressing plant is discharged, high concentration last mortar is formed, is made for subsequent stirring
Slurry and pipeline link provide material base.The last mortar of high concentration is only produced, qualified lotion can be just prepared and fill
Material is filled out, therefore, the quality of the dense effect of tailings directly decides the height of paste body filling quality.
Paste thickener is carried out continuous dense using the gravitational settling of solid particle in last mortar.In the prior art, it is
The mobility of enhancing underflow density and material, mainstream solution is all: adding a kind of flocculant, accelerates the sedimentation speed of tailings
Degree.But there are underflow densities to improve the drawbacks such as the limited, poor fluidity of degree, specific drawback for tailings dehydration concentrating process at present
Are as follows: the addition of common flocculant helps to improve sinking speed, but since this flocculant and tailings particle are formed closely
Floe structure, existing method can not make the water inside floc sedimentation all be discharged, limit further increasing for underflow density.
Summary of the invention
The problems such as to be improved for existing thickener underflow concentration, the present invention provide a kind of heavy for improving solid particle
The composition of effect drops.
And the application the present invention also provides the composition in terms of improving thickener underflow concentration.
And the present invention also provides the dense synergist comprising the composition.
And the present invention also provides the preparation method of the dense synergist and application methods.
To achieve the above object of the invention, present invention employs the following technical solutions:
It is a kind of for improving the composition of solid particles sediment effect, including following components in terms of mass fraction: complexing group
Divide 16~38 parts, 14~27 parts of bleed component, 24~51 parts of dispersed component, 9~22 parts of linear ion polymers compositions；
Wherein, the dispersed component is mass ratio (2~4): (1~2): 1 maleic acrylic copolymer sodium salt, poly- second
The mixture of glycol monomethyl ether and Polysucciuimide sodium, and the mass ratio of the dispersed component and linear ion polymers compositions is
2~3:1.
In the present composition: complexing components can be adsorbed on solid particles surface, increase the partial size and weight of particle, accelerate
The sedimentation of particle.Bleed component and linear ion polymers compositions can prevent the reunion between fine particle, improve the stream of material
Dynamic property.In dispersed component, had in maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium molecule
Carboxylic acid group, hydroxyl and ether isopolarity group, and there is combed branched structure, main chain and solid particles surface phase in slurry
Even, and branch extends into liquid phase and forms thicker polymer molecule adsorption layer, when solid particle close to when adsorption layer start weight
It is folded, repulsion effect is generated between particle, this mechanically decoupled active force is the effect of steric hindrance repulsion.By by maleic acid third
Olefin(e) acid copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium are mixed according to specific ratio, both can increase particle
Partial size can destroy Floe structure in favor of sedimentation, discharge the Free water in floc sedimentation, improve the concentration of solid after sedimentation.
Further, the complexing components are selected from tricarboxylic acid compounds, multi-hydroxy carboxy acid's salt compounds or organic phosphorus
Barbiturates compound, such as four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid and polyethers polyamino methene phosphoric acid.
Carboxyl, hydroxyl contained in preferred complexing components etc. can form the polar group of hydrogen bond with water, have stronger
Hydrophilic interaction, therefore will form one layer of hydration shell after being adsorbed on tailings particle surface, hydration shell can destroy Floe structure, release wadding
Free water between group keeps particle surface more wet, lubricating action is played, so as to improve mobility of the tailings after dense.
Further, the bleed group is divided into alcamine compound, such as diethanol monoisopropanolamine.
Preferred bleed component has preferable air-entraining effect, can reduce liquid gas interface tension, therefore can be adsorbed on
Hydration shell is formed on liquid gas interface, is equally played lubricating action, is further improved mobility.
Further, the linear ion polymers compositions is melamine class, sulfamic acid class or aliphatic category linear polymerization
Any one of object, such as melamine-formaldehyde copolymer, sodium sulfanilate-formaldehyde-phenol copolymer and fatty acid methyl ester
Polyoxyethylene ether etc..
Preferred linear ion polymers compositions due to hydrophilic polar group ionization, electrostatic repulsion effect compared with
By force.Dense synergist, which is adsorbed in tailings particle surface, makes particle charge, acceleration mutually exclusive due to band identical charges between particle
Intergranular dispersion.
The present invention also provides the compositions to improve the application in thickener underflow concentration.
Composition of the invention is applied in concentrator, underflow density can be made to increase, and the last mortar of high concentration is conducive to make
Standby qualified paste body filling material, improves filling quality.
The present invention also provides a kind of dense synergist for improving thickener underflow concentration, including combinations of the above object.
Preferably, the dense synergist is the solution comprising the composition of mass concentration 10%~20%.
Solution is made in composition of the invention, the dense synergist for improving thickener underflow concentration is can be used as, is flocculating
The dense synergist is added later can effectively improve underflow density, and used component in the production and use process will not
Environment is influenced, is a kind of green product.
The present invention also provides the preparation methods of above-mentioned dense synergist: by the maleic acrylic copolymer sodium salt, gathering
Glycol monoethyl ether and Polysucciuimide sodium mix in mass ratio, obtain dispersed component, and dispersed component and linear ion are polymerize
Object component mixes in mass ratio, and complexing components and bleed component is then added, obtains mixed powder；The mixed powder is added into water
The solution of the mass concentration is dissolved into get the dense synergist.
The preparation method of the dense synergist of the present invention is simple and convenient, does not need to be convenient for industrial application using special installation.
The present invention also provides the application methods of the dense synergist: tailing slurry adds described dense again after flocculating setting
Close synergist is settled, and tailings siccative per ton uses the dense synergist of 250~600g.
Synergist of the present invention is added after slurry flocculant process in concentrator, can effectively improve underflow density, compared with
Being not added with synergist underflow ultimate density can be improved 8~10%, simultaneously because the hydration shell lubricating action of dense synergist, may be used also
To improve the mobility of material, and volume is few, at low cost, and the mechanical property and endurance quality of paste filling material will not be produced
Raw detrimental effect.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
1, it stocks up
Each component is weighed according to following mass fraction: 36 parts of complexing components, 27 parts of bleed component, 27 parts of dispersed component, line
9 parts of ionic polymer component of property；
Wherein, complexing components are four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid, and bleed group is divided into diethanol monoisopropanolamine, dispersed component
For the maleic acrylic copolymer sodium salt of mass ratio 3:1:1, the mixture of poly glycol monomethyl ether and Polysucciuimide sodium, line
Property ionic polymer component be sodium sulfanilate-formaldehyde-phenol copolymer.
2, mixed
Maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium are mixed by above-mentioned mass ratio
It closes, adds sodium sulfanilate mixing, four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid and diethanol monoisopropanolamine, mixing is then added
Uniformly, mixed powder is obtained.
3, it dissolves
The mixed powder is added to the water dissolution, makes the mass concentration 10% of mixed powder, obtains dense synergist.
Embodiment 2
1, it stocks up
Each component is weighed according to following mass fraction: 17 parts of complexing components, 17 parts of bleed component, 50 parts of dispersed component, line
17 parts of ionic polymer component of property；
Wherein, complexing components are polyethers polyamino methene phosphoric acid (PAPEMP), and bleed group is divided into diethanol monoisopropanolamine,
Maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and the Polysucciuimide sodium that dispersed component is mass ratio 4:2:1
Mixture, linear ion polymers compositions are fatty acid methyl ester APEO (FMEE).
2, mixed
Maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium are mixed by above-mentioned mass ratio
It closes, adds FMEE mixing, PAPEMP and diethanol monoisopropanolamine is then added, be uniformly mixed, obtain mixed powder.
3, it dissolves
The mixed powder is added to the water dissolution, makes the mass concentration 20% of mixed powder, obtains dense synergist.
Embodiment 3
1, it stocks up
Each component is weighed according to following mass fraction: 37.5 parts of complexing components, 25 parts of bleed component, 25 parts of dispersed component,
12.5 parts of linear ion polymers compositions；
Wherein, complexing components are four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid, and bleed group is divided into diethanol monoisopropanolamine, dispersed component
For the maleic acrylic copolymer sodium salt of mass ratio 3:1:1, the mixture of poly glycol monomethyl ether and Polysucciuimide sodium, line
Property ionic polymer component be sodium sulfanilate.
2, mixed
Maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium are mixed by above-mentioned mass ratio
It closes, adds sodium sulfanilate mixing, four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid and diethanol monoisopropanolamine, mixing is then added
Uniformly, mixed powder is obtained.
3, it dissolves
The mixed powder is added to the water dissolution, makes the mass concentration 15% of mixed powder, obtains dense synergist.
Embodiment 4
1, it stocks up
Each component is weighed according to following mass fraction: 20 parts of complexing components, 20 parts of bleed component, 40 parts of dispersed component, line
20 parts of ionic polymer component of property；
Wherein, complexing components are four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid, and bleed group is divided into diethanol monoisopropanolamine, dispersed component
For the maleic acrylic copolymer sodium salt of mass ratio 3:1:1, the mixture of poly glycol monomethyl ether and Polysucciuimide sodium, line
Property ionic polymer component be sodium sulfanilate.
2, mixed
Maleic acrylic copolymer sodium salt, poly glycol monomethyl ether and Polysucciuimide sodium are mixed by above-mentioned mass ratio
It closes, adds sodium sulfanilate mixing, four sodium of 1-hydroxy ethylidene-1,1-diphosphonic acid and diethanol monoisopropanolamine, mixing is then added
Uniformly, mixed powder is obtained.
3, it dissolves
The mixed powder is added to the water dissolution, makes the mass concentration 20% of mixed powder, obtains dense synergist.
Embodiment 5
Certain mine tailings (- 75 μm of particle accountings are 44.89%) production low concentration slurry is selected, the graduated cylinder of 1000ml is poured into
In, test is divided into three groups, wherein the 1st group is singly to mix flocculant anionic polyacrylamide, unit consumption 20g/t, flocculant concentration
It is 1%；The dense synergist for adding in 2nd group and adding embodiment 1 after the sedimentation of the flocculant of the 1st group of equivalent again, unit consumption are
600g/t；The dense synergist for adding in 3rd group and adding embodiment 2 after the sedimentation of the flocculant of the 1st group of equivalent again, unit consumption are
250g/t。
The sedimentation of three groups of tests the results are shown in Table 1, as shown in Table 1: dense synergist can make tailing slurry in the present embodiment
Ultimate density improves 8-10%.
The dense synergist performance test results of table 1
Then, the 1-3 group above-mentioned using the RST type rheometer test of Brookfield adds dense synergist front and back
The rheological property of tailings, obtains yield stress and plastic viscosity is shown in Table 2.As shown in Table 2: in the present embodiment, dense synergist
Can reduce tailing slurry it is dense after yield stress, and then improve tailing slurry mobility.
The rheological property of 2 tailings of table
| Group serial number | Yield stress (Pa) | Plastic viscosity (Pas) |
| 1 | 46.21 | 0.23 |
| 2 | 38.22 | 0.38 |
| 3 | 39.53 | 0.32 |
Then, lotion is made in tailings and cement (P.O 42.5) after will be dense, using WDW-50 type microcomputer controlled electronic ten thousand
The compression strength of lotion before and after dense synergist is added in energy testing machine test, and test result is shown in Table 3.As shown in Table 3: in this reality
It applies in example, on the one hand since dense synergist improves the concentration of tailing slurry, and then improves the compression strength of lotion；Another party
The degree of hydration of cement can be improved in the peptizaiton of the dense synergist in face again, to further increase the compression strength of lotion.
The compression strength of 3 lotion of table
| Group serial number | Cement-sand ratio | 3d(MPa) | 7d(MPa) | 28d(MPa) |
| 1 | 1:6 | 1.08 | 1.75 | 3.04 |
| 2 | 1:6 | 1.97 | 3.24 | 5.42 |
| 3 | 1:6 | 1.88 | 3.06 | 5.63 |
| 1 | 1:12 | 0.28 | 0.51 | 1.01 |
| 2 | 1:12 | 0.61 | 1.07 | 2.75 |
| 3 | 1:12 | 0.65 | 1.10 | 2.90 |
| 1 | 1:24 | 0.12 | 0.17 | 0.45 |
| 2 | 1:24 | 0.52 | 0.45 | 1.03 |
| 3 | 1:24 | 0.34 | 0.38 | 0.98 |
Note: cement-sand ratio is the mass ratio of tailings siccative in cement and tailing slurry.
By being analyzed above it is found that lotion intensity can be improved in dense synergist, therefore under the premise of meeting intensity requirement
It can reduce cement-sand ratio, i.e., with cement-sand ratio 1:12 and add the lotion substitution cement-sand ratio 1:6 of dense synergist and be not added with dense increasing
Imitate agent lotion, with cement-sand ratio 1:24 and add dense synergist lotion substitution cement-sand ratio 1:12 be not added with dense synergist
Lotion reduces cement consumption, and then save the cost.
Cost analysis is carried out to dense synergist front and back is added, the results are shown in Table 4.As shown in Table 4: in the present embodiment, dense
Close synergist can make totle drilling cost save 50 yuan/ton of tailings, 53 yuan/ton of tailings, 18.5 yuan/ton of tailings and 21.5 yuan/ton respectively
Tailings.
4 cost analysis of table
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of for improving the composition of solid particles sediment effect, which is characterized in that including with the following group in terms of mass fraction
Point: 16~38 parts of complexing components, 14~27 parts of bleed component, 24~51 parts of dispersed component, linear ion polymers compositions 9~22
Part；
Wherein, the dispersed component is mass ratio (2~4): (1~2): 1 maleic acrylic copolymer sodium salt, polyethylene glycol
The mixture of monomethyl ether and Polysucciuimide sodium, and the mass ratio of the dispersed component and linear ion polymers compositions be 2~
3:1。
2. composition as described in claim 1, which is characterized in that the complexing components are tricarboxylic acid compounds, polyhydroxy
Any one of metal carboxylate compound or organic phosphate compound.
3. composition as described in claim 1, which is characterized in that the bleed group is divided into alcamine compound.
4. composition as described in claim 1, which is characterized in that the linear ion polymers compositions is melamine class, amino
Any one of sulphonic acids or aliphatic category linear polymer.
5. any one of Claims 1 to 4 composition is improving the application in thickener underflow concentration.
6. a kind of dense synergist for improving thickener underflow concentration, which is characterized in that including any one of Claims 1 to 4 institute
The composition stated.
7. dense synergist as claimed in claim 6, which is characterized in that it is comprising 10%~20% described group of mass concentration
Close the solution of object.
8. the preparation method of dense synergist described in claim 7, which is characterized in that by the maleic acrylic copolymer sodium
Salt, poly glycol monomethyl ether and Polysucciuimide sodium mix in mass ratio, obtain dispersed component, by dispersed component and linear ion
Polymers compositions mixes in mass ratio, and complexing components and bleed component is then added, obtains mixed powder；By the mixed powder
The solution of the mass concentration is dissolved in water into get the dense synergist.
9. the application method of dense synergist described in claim 7, which is characterized in that tailing slurry adds again after flocculating setting
The dense synergist is settled, and tailings siccative per ton uses the dense synergist of 250~600g.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413643A (en) * | 2021-07-26 | 2021-09-21 | 中建西部建设建材科学研究院有限公司 | Efficient settling method for waste slurry of concrete mixing plant |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086620A (en) * | 2013-01-30 | 2013-05-08 | 中钢集团马鞍山矿山研究院有限公司 | Gelatinizing agent suitable for unclassified tailing filling |
| CN103408242A (en) * | 2013-08-28 | 2013-11-27 | 北京金隅水泥节能科技有限公司 | Super slump type polycarboxylate water reducing agent for bored pile concrete and preparation method thereof |
| CN103554496A (en) * | 2013-10-31 | 2014-02-05 | 上海台界化工有限公司 | Retarding and plastic-retaining type polycarboxylate superplasticizer and preparation method thereof |
| CN103553411A (en) * | 2013-10-24 | 2014-02-05 | 郑州大学 | Special pumping agent for full-tailing pasty fluid cementing filling slurry and application of special pumping agent |
| CN104446640A (en) * | 2014-12-03 | 2015-03-25 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Foam tail mortar and pulping and grouting process thereof |
| CN104761174A (en) * | 2014-11-19 | 2015-07-08 | 赵圣光 | Polycarboxylic acid super-fluidifying agent synergist compounded composition and application thereof |
| CN105036587A (en) * | 2015-09-06 | 2015-11-11 | 山东宏艺科技股份有限公司 | High-performance concrete synergist and preparing method thereof |
| CN106396472A (en) * | 2016-08-26 | 2017-02-15 | 北京建工新型建材有限责任公司 | Special high-performance additive for super high-rise pumping concrete |
| CN107868243A (en) * | 2017-12-11 | 2018-04-03 | 江苏苏博特新材料股份有限公司 | The preparation method of the phosphorous acid water reducer of one derived from amino acid |
-
2019
- 2019-03-11 CN CN201910180218.2A patent/CN109821278B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086620A (en) * | 2013-01-30 | 2013-05-08 | 中钢集团马鞍山矿山研究院有限公司 | Gelatinizing agent suitable for unclassified tailing filling |
| CN103408242A (en) * | 2013-08-28 | 2013-11-27 | 北京金隅水泥节能科技有限公司 | Super slump type polycarboxylate water reducing agent for bored pile concrete and preparation method thereof |
| CN103553411A (en) * | 2013-10-24 | 2014-02-05 | 郑州大学 | Special pumping agent for full-tailing pasty fluid cementing filling slurry and application of special pumping agent |
| CN103554496A (en) * | 2013-10-31 | 2014-02-05 | 上海台界化工有限公司 | Retarding and plastic-retaining type polycarboxylate superplasticizer and preparation method thereof |
| CN104761174A (en) * | 2014-11-19 | 2015-07-08 | 赵圣光 | Polycarboxylic acid super-fluidifying agent synergist compounded composition and application thereof |
| CN104446640A (en) * | 2014-12-03 | 2015-03-25 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Foam tail mortar and pulping and grouting process thereof |
| CN105036587A (en) * | 2015-09-06 | 2015-11-11 | 山东宏艺科技股份有限公司 | High-performance concrete synergist and preparing method thereof |
| CN106396472A (en) * | 2016-08-26 | 2017-02-15 | 北京建工新型建材有限责任公司 | Special high-performance additive for super high-rise pumping concrete |
| CN107868243A (en) * | 2017-12-11 | 2018-04-03 | 江苏苏博特新材料股份有限公司 | The preparation method of the phosphorous acid water reducer of one derived from amino acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413643A (en) * | 2021-07-26 | 2021-09-21 | 中建西部建设建材科学研究院有限公司 | Efficient settling method for waste slurry of concrete mixing plant |
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