CN106238218B - A kind of filter aid and preparation method thereof being separated by solid-liquid separation for hematite concentrates - Google Patents
A kind of filter aid and preparation method thereof being separated by solid-liquid separation for hematite concentrates Download PDFInfo
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- CN106238218B CN106238218B CN201610648620.5A CN201610648620A CN106238218B CN 106238218 B CN106238218 B CN 106238218B CN 201610648620 A CN201610648620 A CN 201610648620A CN 106238218 B CN106238218 B CN 106238218B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Abstract
A kind of filter aid and preparation method thereof being separated by solid-liquid separation for hematite concentrates, formula components press mass fraction are as follows: 0.1~5 part of acrylic acid, 0.1~2 part of acrylamide, 3~10 parts of starch, 2~20 parts of iron powder, 0.1~5 part of hydrogen peroxide, 10~80 parts of hydrochloric acid, 100 parts of water；The preparation method comprises the following steps: (1) prepares raw material；(2) acrylic acid and starch are added into water, stirs evenly, is warming up into starchiness, adjusts pH value；(3) iron powder is added into hydrochloric acid；(4) acrylamide and hydrogen peroxide are added after mixing, is warming up to 50 ± 2 DEG C of 1~2h of reaction.Filter aid of the invention is small to equipment corrosion；Dosage is small when use, use cost is low, and transport, use, storage are highly-safe.
Description
Technical field
The pharmaceutical arts that the invention belongs to separate for mineral solids/liquids, in particular to it is a kind of to be separated by solid-liquid separation for hematite concentrates
Filter aid and preparation method thereof.
Background technique
The process flow that hematite separation uses at present is mainly method for floating, and therefore, mineral grinding particle size requires fine grinding,
Reach monomer dissociation as far as possible, while needing to be added a variety of beneficiation reagents, to cause ore pulp " thin, mud sticks ", concentrate filtering filter
Cake moisture content is high, and filter cloth service life is short, and filtrate turbidity is big, and fine concentrate is lost serious.To solve the problems, such as above-mentioned production, initially mention
Concentrate filter progress adds the sulfuric acid of 95% or more concentration to eliminate the influence of remaining floating agent in concentrate pulp out, reduces mine
, it is hidden to there is safety in the disadvantages of slurry viscosity improves filter effect, and sulfuric acid is strong acid, has corrosivity strong, storage, transport difficult
Suffer from, and filter effect is bad,
Therefore, develop a kind of filter aid that high effect nontoxic corrosivity is small come replacement sulfur acidolysis certainly filter slurry " thin, mud,
It is glutinous ", it needs concentrate particle to become larger, increases water penetration in favor of filtering, solving the inside asks the increase of ore pulp viscosity containing starch
Topic eliminates the problem of causing ore pulp large viscosity due to gelatinized corn starch as far as possible, so that ore pulp viscosity is become smaller in favor of filtering, produced medicament
Safe and reliable in transport and use process, tool has very great significance.
Summary of the invention
Hematite concentrates filtering there are aiming at the problem that, the present invention provide it is a kind of for hematite concentrates be separated by solid-liquid separation filter aid
And preparation method thereof, sulfuric acid is substituted using the small formula of high effect nontoxic corrosivity, by the burden control of component, solves filter material
Slurry " thin, mud sticks ", improves filter efficiency, reduces moisture of filter cake.
The formula components of the filter aid being separated by solid-liquid separation for hematite concentrates of the invention press mass fraction are as follows: acrylic acid 0.1
~5 parts, 0.1~2 part of acrylamide, 3~10 parts of starch, 2~20 parts of iron powder, 0.1~5 part of hydrogen peroxide, 10~80 parts of hydrochloric acid, water
100 parts；The weight concentration of the hydrochloric acid is 22~25%, H in the hydrogen peroxide2O2Weight concentration be 22~30%.
1.2~1.3g/cm of density when above-mentioned 20 DEG C of filter aid be separated by solid-liquid separation for hematite concentrates3, appearance is Huang
Green transparent liquid, be diluted with water to weight concentration be 1% when, pH value is between 1.5~2.
The COD of the above-mentioned filter aid being separated by solid-liquid separation for hematite concentrates is in 7000~7300mg/L.
The of the invention filter aid being separated by solid-liquid separation for hematite concentrates the preparation method comprises the following steps:
1, prepare raw material, each raw material presses mass parts ratio are as follows: 0.1~5 part of acrylic acid, 0.1~2 part of acrylamide, starch 3
~10 parts, 2~20 parts of iron powder, 0.1~5 part of hydrogen peroxide, 10~80 parts of hydrochloric acid, 100 parts of water；The weight concentration of the hydrochloric acid is
22~25%, H in the hydrogen peroxide2O2Weight concentration be 22~30%；
2, acrylic acid under agitation, is added into water, stirs at least 2min, starch is then added, stirs evenly, then
Starch is warming up into starchiness, salt acid for adjusting pH value is added 1.1~1.5, obtains mixed material；
3, iron powder under agitation, is added into hydrochloric acid, until iron powder is dissolved completely, obtains solution；
4, mixed material is mixed with solution, stirs at least 20min, acrylamide is then added, stir at least 10min,
Hydrogen peroxide is added, 50 ± 2 DEG C of 1~2h of reaction are finally warming up to, obtains the filter aid being separated by solid-liquid separation for hematite concentrates.
In the above method, iron powder is divided into 3~5 parts when iron powder is added and is sequentially added, added again after last point of dissolution
Enter next part.
It in the above method, is slowly added to when hydrogen peroxide is added, time at least 20min is added in control.
Filter aid of the invention, since starch is nontoxic degradable, is good for the environment using starch as macromolecule fundamental chain；Grafting sun
The ion of ion can be iron, aluminium, copper, nickel, road etc., but comprehensively consider the grade for not influencing concentrate powder and production cost and environmental protection
Etc. factors, so acrylic acid, butene dioic acid, acrylamide, enol class etc. can be selected in intermediate monomer using iron；Comprehensively consider ring
The factors final choice acrylic acid such as guaranteed cost and micro acrylamide, initiator can use ammonium persulfate, potassium peroxydisulfate and peroxide
Change hydrogen and iron, overall cost, environmental protection and filter effect final choice hydrogen peroxide, iron and hydrochloric acid.
Filter aid of the invention is acrylic acid, acrylamide, starch in the presence of iron and hydrogen peroxide initiation and hydrochloric acid, institute
Acrylic acid, acrylamide, starch and the iron quadripolymer of formation, it is a kind of organic and inorganic branch altogether with positive electricity core
Macromolecular captures various macromolecules, colloid and particle tool with negative electricity core strongly, builds bridge, the production of coagulation and flocculation
Product, between the two containing there are many molecule mixture of Fe and H different degree of substitution, control in the reaction various substances mole when
Reaction condition can obtain product of different nature.
The reaction equation of the preparation method of the filter aid being separated by solid-liquid separation for hematite concentrates of the invention are as follows:
The action principle reaction equation of the filter aid being separated by solid-liquid separation for hematite concentrates of the invention are as follows:
Filter aid of the invention is positively charged macromolecule, has very strong neutralization to causticization gelatinized corn starch and adsorbs, builds bridge and make
With, the particle of concentrate can be made further to increase, increase water penetration, make with a small amount of fine concentrate causticization starch and free causticization
Starch is converted into unstable precipitation settling phase and eliminates from water, eliminate the viscosity of ore pulp from stabilizing dissolved suspended state,
The mobility for increasing ore pulp improves the water filtration efficiency of filter, reduces concentrate powder moisture content；Due to colloid in ore pulp, particle pole
The elimination of property, shoes elimination extend the service life of filter cloth；It is again small that PH effect dosage more much smaller than sulfuric acid drops, so right
Equipment corrosion is small；Dosage is small when use, use cost is low, and transport, use, storage are highly-safe.
Specific embodiment
Acrylic acid, acrylamide, starch, iron powder, hydrogen peroxide and the hydrochloric acid used in the embodiment of the present invention is commercially available industry
Product.
The water used in the embodiment of the present invention is deionized water.
Embodiment 1
Prepare raw material, each raw material presses mass parts ratio are as follows: 5 parts of acrylic acid, 2 parts of acrylamide, 10 parts of starch, iron powder 20
Part, 5 parts of hydrogen peroxide, 80 parts of hydrochloric acid, 100 parts of water；The weight concentration of hydrochloric acid is 22%, H in hydrogen peroxide2O2Weight concentration be
22%；
Under agitation, acrylic acid is added into water, stirs 2min, starch is then added, stirs evenly, then is warming up to
Starch is added salt acid for adjusting pH value 1.1, obtains mixed material at starchiness；
Under agitation, iron powder is added into hydrochloric acid, until iron powder is dissolved completely, obtains solution；It will when iron powder is added
Iron powder is divided into 3 parts and sequentially adds, and adds next part after last point of dissolution；
Mixed material is mixed with solution, stirs 20min, acrylamide is then added, 10min is stirred, is slow added into
Time 20min is added in hydrogen peroxide, control, is finally warming up to 50 ± 2 DEG C of reaction 1h, obtains and helps for what hematite concentrates were separated by solid-liquid separation
Filtering agent；
The application method of the above-mentioned filter aid being separated by solid-liquid separation for hematite concentrates are as follows:
When hematite separation factory concentrate is filtered, add water that weight concentration 25.6% is made in hematite separation factory concentrate
Ore pulp, slurry pH 11.3；Above-mentioned filter aid is added into ore pulp, additive amount is added by every 200g hematite separation factory's concentrate
1mL filter aid, is filtered after mixing, drainage time 66.95s, and concentrate moisture content mass percent is 10.07%, ore pulp
Final ph 9.09；
Test is compared using concentrate of the same race, addition sulfuric acid substitutes above-mentioned filter aid, and sulfuric acid dosage presses the red iron of every 200g
Mine dressing plant concentrate adds 1.907mL (sulfuric acid weight concentration 20%), and drainage time 85.45 seconds, sulfuric acid concentrate moisture content
12.01%, the final pH value 6.85 of ore pulp.
Embodiment 2
The preparation method is the same as that of Example 1, and difference is:
(1) raw material presses mass parts ratio are as follows: and 2 parts of acrylic acid, 1 part of acrylamide, 5 parts of starch, 8 parts of iron powder, hydrogen peroxide 3
Part, 30 parts of hydrochloric acid, 100 parts of water；The weight concentration of hydrochloric acid is 23%, H in hydrogen peroxide2O2Weight concentration be 26%；
(2) acrylic acid is added, stirs 3min, salt acid for adjusting pH value is added 1.3, obtains mixed material；
(3) iron powder is divided into 4 parts when iron powder is added to sequentially add；
(4) 25min is mixed in mixed material and solution, acrylamide is added and stirs 15min, the time is added in hydrogen peroxide
30min is warming up to 50 ± 2 DEG C of reaction 1.5h；
Application method are as follows:
When hematite separation factory concentrate is filtered, add water that weight concentration 35.62% is made in hematite separation factory concentrate
Ore pulp, slurry pH 12.04；Above-mentioned filter aid is added into ore pulp, additive amount is added by every 200g hematite separation factory concentrate
Adding 1.5mL filter aid, is filtered after mixing, drainage time 65.45s, concentrate moisture content mass percent is 10.00%,
Ore pulp final ph 9；
Test is compared using concentrate of the same race, addition sulfuric acid substitutes above-mentioned filter aid, and sulfuric acid dosage presses the red iron of every 200g
Mine dressing plant concentrate adds 1.852mL (sulfuric acid weight concentration 20%), and drainage time 80.45 seconds, sulfuric acid concentrate moisture content
11.98%, the final pH value 6.98 of ore pulp.
Embodiment 3
The preparation method is the same as that of Example 1, and difference is:
(1) raw material presses mass parts ratio are as follows: and 0.1 part of acrylic acid, 0.1 part of acrylamide, 3 parts of starch, 2 parts of iron powder, dioxygen
0.1 part of water, 10 parts of hydrochloric acid, 100 parts of water；The weight concentration of hydrochloric acid is 25%, H in hydrogen peroxide2O2Weight concentration be 30%；
(2) acrylic acid is not added, stirs 4min, salt acid for adjusting pH value is added 1.5, obtains mixed material；
(3) iron powder is divided into 5 parts when iron powder is added to sequentially add；
(4) 30min is mixed in mixed material and solution, acrylamide is added and stirs 20min, the time is added in hydrogen peroxide
40min is warming up to 50 ± 2 DEG C of reaction 2h.
Claims (3)
1. a kind of preparation method for the filter aid being separated by solid-liquid separation for hematite concentrates, it is characterised in that sequentially include the following steps:
(1) prepare raw material, each raw material presses mass parts ratio are as follows: 0.1~5 part of acrylic acid, 0.1~2 part of acrylamide, starch 3~
10 parts, 2~20 parts of iron powder, 0.1~5 part of hydrogen peroxide, 10~80 parts of hydrochloric acid, 100 parts of water；The weight concentration of the hydrochloric acid is 22
~25%, H in the hydrogen peroxide2O2Weight concentration be 22~30%；
(2) under agitation, acrylic acid is added into water, stirs at least 2min, starch is then added, stirs evenly, then rises
Temperature, at starchiness, is added salt acid for adjusting pH value 1.1~1.5, obtains mixed material to starch；
(3) under agitation, iron powder is added into hydrochloric acid, until iron powder is dissolved completely, obtains solution；
(4) mixed material is mixed with solution, stirs at least 20min, is then added acrylamide, stir at least 10min, then plus
Enter hydrogen peroxide, be finally warming up to 50 ± 2 DEG C of 1~2h of reaction, obtains the filter aid being separated by solid-liquid separation for hematite concentrates；The use
1.2~1.3g/cm of density when the filter aid that hematite concentrates are separated by solid-liquid separation is at 20 DEG C3, appearance is yellow green transparency liquid, is used
Water be diluted to weight concentration be 1% when, pH value is between 1.5~2.
2. the preparation method of the filter aid according to claim 1 being separated by solid-liquid separation for hematite concentrates, it is characterised in that step
Iron powder is divided into 3~5 parts when iron powder is added in (3) suddenly to sequentially add, adds next part after last point of dissolution.
3. the preparation method of the filter aid according to claim 1 being separated by solid-liquid separation for hematite concentrates, it is characterised in that step
It is slowly added to when hydrogen peroxide is added in (4) suddenly, time at least 20min is added in control.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648620.5A CN106238218B (en) | 2016-08-09 | 2016-08-09 | A kind of filter aid and preparation method thereof being separated by solid-liquid separation for hematite concentrates |
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| CN201610648620.5A CN106238218B (en) | 2016-08-09 | 2016-08-09 | A kind of filter aid and preparation method thereof being separated by solid-liquid separation for hematite concentrates |
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| CN109173432A (en) * | 2018-09-27 | 2019-01-11 | 首钢集团有限公司 | Improve the method for red Iron concentrate strainability |
| CN111804443A (en) * | 2019-04-10 | 2020-10-23 | 杨立 | Reverse flotation method based on low-temperature starch causticization reaction |
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