CN107515179B - Sedimentation test method of flocculant for fine-grained embedded iron ore - Google Patents
Sedimentation test method of flocculant for fine-grained embedded iron ore Download PDFInfo
- Publication number
- CN107515179B CN107515179B CN201710765771.3A CN201710765771A CN107515179B CN 107515179 B CN107515179 B CN 107515179B CN 201710765771 A CN201710765771 A CN 201710765771A CN 107515179 B CN107515179 B CN 107515179B
- Authority
- CN
- China
- Prior art keywords
- ore
- ore pulp
- pulp
- measured
- flocculant
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000004062 sedimentation Methods 0.000 title claims abstract description 35
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 32
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 239000006228 supernatant Substances 0.000 claims abstract description 40
- 238000005303 weighing Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000008394 flocculating agent Substances 0.000 claims description 33
- 239000002002 slurry Substances 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 12
- 239000010419 fine particle Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 6
- 239000011550 stock solution Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 13
- 239000002245 particle Substances 0.000 description 9
- 238000005189 flocculation Methods 0.000 description 8
- 230000016615 flocculation Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000668854 Howardia biclavis Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a sedimentation test method of a flocculant for a fine-grained embedded iron ore, which comprises the step of weighing the empty weight G of a sedimentation bottleBottle (Ref. TM. bottle)Mixing the ore pulp to be measured and injecting the ore pulp into a settling flask to reach the volume V to be measuredGeneral assemblyWeighing settling flask GGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly‑GBottle (Ref. TM. bottle)(ii) a Weighing a flocculant to be detected, stirring and adding the flocculant into production water at 40-50 ℃ to obtain a flocculant solution with the concentration of 0.1%; pouring measured amount of flocculant solution into ore pulp in a settling flask, mixing uniformly, standing, measuring the interface height H of supernatant at different time and recording, and the supernatant volume is V at the end of settlingOn the upper part(ii) a Taking supernatant V which is kept standing for a set time or has a constant supernatant interface heightUpper side ofFiltering and drying by using filter paper to obtain a supernatant with a solid content of A; calculating the sedimentation concentration C according to the above resultsDeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]× 100%, the invention has the advantages of short measuring process, easy operation and high rate of conformity with industrial tests.
Description
Technical Field
The invention belongs to the technical field of mineral separation, and particularly relates to a sedimentation test method of a flocculant for a fine-grained embedded iron ore, which is short in measurement flow, easy to operate and high in industrial test conformity rate.
Background
With the rapid development of the steel industry, the proportion of the iron ore tailings in the industrial solid waste is larger and larger. A large amount of tailings accumulated for a long time invade the land, extrude the river channel, and fly dust in wind season to pollute the atmosphere; sometimes, the great amount of deposited tailings can cause dam break and safety accidents. A large amount of tailings not only occupy land and cause resource waste, but also bring serious pollution and harm to human living environment, destroy ecological balance and other problems, and have been widely concerned by the whole society. In order to meet the production requirement and take safety into consideration, the method is widely used for filling the iron ore goaf with the subsequent full tailings in a cementing manner and filling the ore pillar stope with the subsequent full tailings at present, and is a beneficial mode for utilizing tailings. In addition, along with the development of the mineral separation process, the particles of the concentrate and the tailings are increasingly finer, so that the high-concentration conveying is generally adopted at present for energy conservation and consumption reduction, and the concentration becomes an important problem in the pipeline conveying pretreatment. Because the concentration is the primary link of tailing treatment, on one hand, the tailing backwater can be returned to the mineral separation flow for recycling, so that water resources are fully utilized, the consumption of new water is saved, and the emission is reduced; on the other hand, the tailings with higher concentration are accumulated in a centralized way or used for underground filling, which is beneficial to environmental protection and comprehensive development and utilization. The settling speed is lower by only depending on natural settling, so that the flocculating agent is added to lead the micro particles to be coagulated into floccules by flocculation according to the characteristic of tailing sand settling, thereby promoting the settling.
The flocculating agent is divided into an inorganic flocculating agent and a high-molecular flocculating agent, and the aggregation particle size of particles is increased mainly through modes of static neutralization, interface adsorption bridging and the like, so that the rapid separation of a liquid-solid system is realized. The inorganic flocculant mainly plays a role in reducing surface potential and the like, is low in price, but is large in dosage and poor in flocculation effect; the polymeric flocculant generally has a long-chain structure, contains more functional groups with stronger adsorption capacity on the chain, and can be respectively adsorbed on the surfaces of different particles, so that a bridging effect is generated, and coarse floccules are formed. The higher the degree of polymerization of the flocculant, the more significant the polymerization effect. The optimal effect expected in the use process of the flocculating agent is not achieved, namely the flocculating effect is not exerted to the maximum, and the reasons mainly comprise the influence of temperature, the influence of the pH value of the water body, the influence of the adding amount of the flocculating agent, the influence of stirring speed and time and the like. Under the low temperature condition, the flocculating agent is not uniform, large flocculation groups cannot be formed, the flocculation groups are fine and loose, and the clarification effect is poor; the flocculant macromolecule is broken under the high temperature condition, the flocculation effect is reduced, large particles cannot be formed, formed flocculating constituents are fine, the water content of sludge is increased, and the sludge is difficult to treat. The water temperature is too high or too low to be harmful to flocculation, and the flocculation water temperature condition is preferably controlled to be 20-30 ℃.
The large-red-mountain iron ore is the first iron mine of the most advanced underground mining scale in China, and the large-red-mountain iron ore which accounts for about 18 percent of the iron ore resources in China is a typical representative of volcanic rock type ore deposits and has the characteristics of high content of silicate and iron silicate minerals, high content of micro-fine particles, high content of silicon in iron ore concentrate and high content of iron in tailings. Such as 33.38 percent of TFe grade, 71.57 percent of mFe percent of raw ore and SiO corresponding to the secondary mining engineering of the big red mountain2The content is 23.45%, and the content of ore grinding granularity of-0.045 mm accounts for more than 75% in order to dissociate mineral monomers as much as possible. Because the granularity of the tailings is fine, the fine-grained particles are easy to float by water flow impact in the industrial tailing sedimentation process, and the static sedimentation of the fine-grained particles is compact by adopting static flocculation measurement in a laboratory test flocculant, so that the sedimentation data of the flocculant in the laboratory test and the data in the industrial process are large in difference, and the correct judgment of the flocculant is seriously influenced.
Disclosure of Invention
The invention aims to provide a sedimentation test method of a flocculant for a fine-grained embedded iron ore, which has the advantages of short measurement process, easy operation and high industrial test conformity rate.
The purpose of the invention is realized as follows: the method comprises the steps of ore pulp preparation, flocculant preparation, sedimentation measurement, supernatant solid content determination and sedimentation concentration calculation, and specifically comprises the following steps:
A. preparing ore pulp: weighing empty weight G of settling flask with capacity scalesBottle (Ref. TM. bottle)Fully and uniformly stirring the fine-particle embedded iron ore pulp to be detected, and then injecting the pulp into a settling flask to reach the capacity V to be detectedGeneral assemblyWeighing the settling flask filled with the pulp to be measured to obtain GGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly-GBottle (Ref. TM. bottle)；
B. Preparing a flocculating agent: weighing a flocculant to be tested, slowly adding the flocculant to be tested into production water at the temperature of 40-50 ℃ while stirring, and preparing to obtain a flocculant solution with the concentration of 0.1%;
C. and (3) settlement measurement: injecting the measured amount of the flocculant solution into the to-be-measured fine-particle embedded iron ore pulp of the settling flask in the step A, stirring or shaking to uniformly mix the to-be-measured ore pulp and the flocculant solution, standing the volumetric flask, measuring the height H of a supernatant interface at different times in a timing manner, and recording, wherein the volume of the supernatant is V when the settling is finishedOn the upper part；
D. And (3) measuring the solid content of the supernatant: taking a certain volume V of the supernatant which is kept standing for a specified time or the interface height of the supernatant does not change for a specified time in the step CUpper side ofThen filtering by using filter paper, drying and weighing to obtain the solid content A of the measured supernatant;
E. and (3) calculating the settlement concentration: according to the above results, the sedimentation concentration CDeposit of oreCalculated as follows:
Cdeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]×100%；
Wherein: cOre pulpThe concentration of the fine-grained iron-ore-imbedding pulp to be measured.
The method is characterized in that a flocculating agent is dissolved in production water at 40-50 ℃ aiming at the characteristics of fine and uneven embedded iron ore embedded particle size and fine tailing particle size, and then the flocculating agent is injected into the fine embedded iron ore pulp to be detected at normal temperature according to the dosage. The inventor finds that the flocculant is dissolved in the production water at the temperature of 40-50 ℃ in advance, rather than the normal production water at normal temperature, and then the flocculant is injected into the measured ore pulp, so that the obtained laboratory standing sedimentation test result is basically consistent with the sedimentation data in the production process, the problem that the flocculant guided by the test result of a laboratory in the prior art is inconsistent with the production data is solved, and the guidance of the test data of the flocculant for settling the fine-grained embedded iron ore pulp is improved. Therefore, the method has the characteristics of short flow, easy operation and high industrial test conformity rate.
Drawings
FIG. 1 is a 50g/t dose sedimentation curve of example 1 of the present invention;
FIG. 2 is a 100g/t dose sedimentation curve of example 2 of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited thereto in any way, and any modification or improvement based on the teaching of the present invention is within the scope of the present invention.
The method comprises the steps of ore pulp preparation, flocculant preparation, sedimentation measurement, supernatant solid content determination and sedimentation concentration calculation, and specifically comprises the following steps:
A. preparing ore pulp: weighing empty weight G of settling flask with capacity scalesBottle (Ref. TM. bottle)Fully and uniformly stirring the fine-particle embedded iron ore pulp to be detected, and then injecting the pulp into a settling flask to reach the capacity V to be detectedGeneral assemblyWeighing the settling flask filled with the pulp to be measured to obtain GGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly-GBottle (Ref. TM. bottle)；
B. Preparing a flocculating agent: weighing a flocculant to be tested, slowly adding the flocculant to be tested into production water at the temperature of 40-50 ℃ while stirring, and preparing to obtain a flocculant solution with the concentration of 0.1%;
C. and (3) settlement measurement: taking the measured dosage of the flocculant solution to be injected into the fine particles to be measured of the settling flask in the step AStirring or shaking the embedded iron ore pulp to uniformly mix the pulp to be detected and a flocculant solution, standing the volumetric flask, measuring the height H of a supernatant interface at different times in a timing manner, recording, and taking the supernatant volume V after the sedimentation is finishedOn the upper part；
D. And (3) measuring the solid content of the supernatant: taking a certain volume V of the supernatant which is kept standing for a specified time or the interface height of the supernatant does not change for a specified time in the step CUpper side ofThen filtering by using filter paper, drying and weighing to obtain the solid content A of the measured supernatant;
E. and (3) calculating the settlement concentration: according to the above results, the sedimentation concentration CDeposit of oreCalculated as follows:
Cdeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]×100%；
Wherein: cOre pulpThe concentration of the fine-grained iron-ore-imbedding pulp to be measured.
The invention also comprises a step of measuring the concentration of the ore pulp, wherein the step of measuring the concentration of the ore pulp is to fully mix the fine-grained embedded iron ore pulp to be measured, then respectively weigh 100G of primary pulp solution by using three evaporating dishes, then respectively dry the primary pulp solution to obtain three evaporating dishes to obtain the final dry basis mass, and obtain the average mass G according to the following formulaDry basisAnd the pulp concentration C to be measuredOre pulp：
GDry basis=(GTotal mass of drying－GQuality of evaporating dish)÷3
COre pulp=GDry basis÷100×100%。
The capacity V to be measured of the fine-grained embedded iron ore pulp to be measured in the step AGeneral assembly250, 500, 750 or 1000 ml.
The measured volume dosage V of the flocculant solution used for measuring in the step CFlocculating agentComprises the following steps:
Vflocculating agent=(GDry ore×q)÷VIn the aggregate of the above-mentioned processes,
Gdry ore=VGeneral assembly÷(R+1÷P),
R=(1-COre pulp)÷CThe slurry of the ore is mixed with the ore slurry,
wherein: q is the dosage of the flocculating agent and the unit g/t;
and P is the ore specific gravity of the ore pulp to be detected.
And B, adding the flocculant to be detected in the step B into production water, and stirring for 3-5 min at 60-180 rpm under the condition of heat preservation at 40-50 ℃.
And C, stirring and uniformly mixing the ore pulp to be detected and the flocculant solution in the step C for 1-3 min at 60-180 rpm.
And C, shaking and uniformly mixing the ore pulp to be detected and the flocculant solution in the step C, namely sealing the settling flask and then shaking back or turning over the settling flask up and down for 5-10 times.
And C, drawing a sedimentation curve according to the time and the height H of the supernatant interface.
The TFe grade of the tailings of the fine-grained iron-embedded ore pulp to be detected is less than 10 percent, and the content of 0.045mm is more than 80 percent.
Example 1
The TFe grade of the crude ore corresponding to the second-stage mining engineering of the big red mountain is 33.38 percent, the mFe occupancy rate is 71.57 percent, and SiO is2The content is 23.45 percent, and the content of tailing pulp granularity of-0.045 mm accounts for 82 percent. The flocculant sedimentation test of tailing slurry comprises the following steps:
s50: fully and uniformly mixing the tailing slurry, respectively weighing 100G of primary pulp solution by using three evaporation dishes, respectively drying to obtain three evaporation dishes to obtain final dry basis mass, and calculating average mass G according to the following formulaDry basisAnd the pulp concentration C to be measuredOre pulp：
GDry basis=(GTotal mass of drying－GQuality of evaporating dish)÷3=28.94(g)
COre pulp=GDry basis÷100×100%=28.94%。
S100: weigh 1000ml setting flask empty weight G with capacity scaleBottle (Ref. TM. bottle)Fully and uniformly stirring the fine-particle iron ore tailing slurry to be detected, and then injecting the fine-particle iron ore tailing slurry into a settling flask till the volume V to be detectedGeneral assembly=1000ml, and G is obtained by weighing a settling flask filled with the ore pulp to be measuredGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly-GBottle (Ref. TM. bottle)=1257g；
S200: SXK-164 of Yunnan Shagao science and technology Limited, 1534 of Yunnan Pejia environmental science and technology Limited and 3g of FA920 flocculating agents are respectively weighed, 300ml of tailing production water to be detected with the temperature of 40 ℃ is respectively poured into 3 beakers, and then the 3g flocculating agents are respectively added into 3 beakers slowly while being stirred to prepare a flocculating agent solution with the concentration of 0.1 percent;
TABLE 1 flocculants
S300: respectively injecting the flocculant solution with the measured dosage into tailing slurry to be measured of 3 settling flasks of S100 according to the dosage of 50g/t, sealing the settling flasks, shaking the settling flasks back for 5 times to uniformly mix the tailing slurry to be measured with the flocculant solution, standing the volumetric flasks, timing, measuring the height H of a supernatant interface at different times, and recording the height H, wherein the supernatant capacity is V at the end of settlingUpper 164=306ml、VUpper 1534=339ml、VUpper 920=390ml, plot of precipitation against time and supernatant interfacial height H;
s310: measured volume dosage V of dosed flocculant solutionFlocculating agentComprises the following steps:
Vflocculating agent=(GDry ore×q)÷VGeneral assembly=(357.86×50)÷1000=17.9(ml)，
Wherein: gDry ore=VGeneral assembly÷(R+1÷P)=1000÷(2.4554+1÷2.95)=357.86(g)，
Wherein: r = (1-C)Ore pulp)÷COre pulp=(1-0.2894)÷0.2894=2.4554，
Wherein: q is the dosage of the flocculating agent and the unit g/t;
p is the ore specific gravity of the ore pulp to be measured of 2.95.
S400: respectively taking supernatant V of which S300 is still standing until the interfacial height of the supernatant is not changed for 5minUpper side of=100ml, then filtering and drying with filter paper respectively, and weighing to obtain the solid content A of the measured supernatant;
s500: respectively calculating the settlement concentration C according to the resultsDeposit of ore：
CDeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]×100%；
Wherein: cOre pulpFor the concentration of the fine-grained iron-ore slug to be tested to be 2.95,
then: cDeposit 164=29.36%，COre sinking 1534=29.30%，COre precipitation 920=29.09%, the sedimentation rate is shown in table 2.
TABLE 250 g/t sedimentation rate of the dose
500kg of the flocculating agent 1534 and 500kg of the flocculating agent FA920 are respectively used for industrial tests, and the average concentration of the settled tailings is 29.31 percent and 29.08 percent respectively, which are basically consistent with the test results of the example 1.
Example 2
The TFe grade of the crude ore corresponding to the second-stage mining engineering of the big red mountain is 33.38 percent, the mFe occupancy rate is 71.57 percent, and SiO is2The content is 23.45 percent, and the content of tailing pulp granularity of-0.045 mm accounts for 84 percent. The flocculant sedimentation test of tailing slurry comprises the following steps:
s50: fully and uniformly mixing the tailing slurry, respectively weighing 100G of primary pulp solution by using three evaporation dishes, respectively drying to obtain three evaporation dishes to obtain final dry basis mass, and calculating average mass G according to the following formulaDry basisAnd the pulp concentration C to be measuredOre pulp：
GDry basis=(GTotal mass of drying－GQuality of evaporating dish)÷3=29.03(g)
COre pulp=GDry basis÷100×100%=29.03%。
S100: weigh 1000ml setting flask empty weight G with capacity scaleBottle (Ref. TM. bottle)Fully and uniformly stirring the fine-particle iron ore tailing slurry to be detected, and then injecting the fine-particle iron ore tailing slurry into a settling flask till the volume V to be detectedGeneral assembly=1000ml, and G is obtained by weighing a settling flask filled with the ore pulp to be measuredGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly-GBottle (Ref. TM. bottle)=1263g；
S200: SXK-164 of the science and technology Limited company of Schaudi, Yunnan, 1534 of the science and technology Limited company of Pajia, Yunnan, and 3g of each of the FA920 flocculants are respectively weighed, 300ml of each of tailings production water to be tested with the temperature of 50 ℃ is poured into 3 beakers, then the 3g of the flocculant is slowly added into the 3 beakers while being stirred, and the mixture is stirred at the speed of 120rpm and the temperature of 50 ℃ for 3min to prepare a flocculant solution with the concentration of 0.1 percent;
s300: respectively injecting the flocculant solution with measured dosage into tailing pulp to be measured of 3 settling bottles of S100 according to the dosage of 100g/t, stirring at 180rpm for 2min, uniformly mixing the tailing pulp to be measured and the flocculant solution, then standing the volumetric flask, timing, measuring the height H of a supernatant interface at different times, recording, and when the settling is finished, determining the supernatant capacity VUpper 164=276ml、VUpper 1534=340ml、VUpper 920=350ml, precipitation plot 1 is plotted as a function of time and supernatant interfacial height H;
s310: measured volume dosage V of dosed flocculant solutionFlocculating agentComprises the following steps:
Vflocculating agent=(GDry ore×q)÷VGeneral assembly=(359.23×100)÷1000=35.9(ml)，
Wherein: gDry ore=VGeneral assembly÷(R+1÷P)=1000÷(2.4447+1÷2.95)=359.23(g)，
Wherein: r = (1-C)Ore pulp)÷COre pulp=(1-0.2903)÷0.2903=2.4447，
Wherein: q is the dosage of the flocculating agent and the unit g/t;
p is the ore specific gravity of the ore pulp to be measured of 2.95.
S400: respectively taking supernatant V of which S300 is still standing until the interfacial height of the supernatant is not changed for 5minUpper side of=100ml, then filtering and drying with filter paper respectively, and weighing to obtain the solid content A of the measured supernatant;
s500: respectively calculating the settlement concentration C according to the resultsDeposit of ore：
CDeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]×100%；
Wherein: cOre pulpFor the concentration of the fine-grained iron-ore slug to be tested to be 2.95,
then: cDeposit 164=29.68%，COre sinking 1534=29.21%，COre precipitation 920=29.31%, and the settling rate is shown in table 3.
TABLE 3100 g/t dose sedimentation rate
300kg of the SXK-164 and 1534 flocculants are respectively used for industrial tests at the dosage of 100g/t of the agent, the average concentration of the settled tailings is 29.65 percent and 29.23 percent respectively, and the test results are basically consistent with those of the example 2.
Claims (5)
1. The sedimentation test method of the flocculant for the fine-grained iron ore is characterized by comprising the steps of ore pulp preparation, flocculant preparation, sedimentation measurement, supernatant liquid solid content determination and sedimentation concentration calculation, and specifically comprises the following steps:
A. preparing ore pulp: weighing empty weight G of settling flask with capacity scalesBottle (Ref. TM. bottle)Fully and uniformly stirring the fine-particle embedded iron ore pulp to be detected, and then injecting the pulp into a settling flask to reach the capacity V to be detectedGeneral assemblyWeighing the settling flask filled with the pulp to be measured to obtain GGeneral assemblyThe quality of the ore pulp to be measured is GOre pulp=GGeneral assembly-GBottle (Ref. TM. bottle)(ii) a The TFe grade of the tailings of the fine-grained iron-embedded ore pulp to be detected is less than 10 percent, and the content of 0.045mm is more than 80 percent;
B. preparing a flocculating agent: weighing a flocculant to be tested, slowly adding the flocculant to production water with the temperature of 40-50 ℃ while stirring, and stirring for 3-5 min at 60-180 rpm under the condition of heat preservation at 40-50 ℃ to prepare a flocculant solution with the concentration of 0.1%;
C. and (3) settlement measurement: injecting the measured amount of the flocculant solution into the to-be-measured fine-particle embedded iron ore pulp of the settling flask in the step A, stirring or shaking to uniformly mix the to-be-measured ore pulp and the flocculant solution, standing the volumetric flask, measuring the height H of a supernatant interface at different times in a timing manner, and recording, wherein the volume of the supernatant is V when the settling is finishedOn the upper part(ii) a Stirring and mixing the ore pulp to be detected and the flocculant solution for 1-3 min at 60-180 rpm, and shaking and mixing the ore pulp to be detected and the flocculant solutionThe ore pulp and the flocculating agent solution are obtained by sealing the settling flask and then shaking back or turning over the settling flask up and down for 5-10 times;
D. and (3) measuring the solid content of the supernatant: taking a certain volume V of the supernatant which is kept standing for a specified time or the interface height of the supernatant does not change for a specified time in the step CUpper side ofThen filtering by using filter paper, drying and weighing to obtain the solid content A of the measured supernatant;
E. and (3) calculating the settlement concentration: according to the above results, the sedimentation concentration CDeposit of oreCalculated as follows:
Cdeposit of ore=GOre pulp×COre pulp÷[GOre pulp－(A×VOn the upper part)÷VUpper side of]×100%；
Wherein: cOre pulpThe concentration of the fine-grained iron-ore-imbedding pulp to be measured.
2. The settlement test method as claimed in claim 1, further comprising a step of measuring the pulp concentration, wherein the step of measuring the pulp concentration is to mix the ore pulp of the fine-grained iron ore to be measured, weigh 100G of the stock solution in three evaporating dishes, dry the stock solution in three evaporating dishes to obtain the final dry basis mass, and calculate the average mass G according to the following formulaDry basisAnd the pulp concentration C to be measuredOre pulp：
GDry basis=(GTotal mass of drying－GQuality of evaporating dish)÷3
COre pulp=GDry basis÷100×100%。
3. The sedimentation test method according to claim 1 or 2, characterised in that the volume V to be measured of the pulp of fine-grained disseminated iron ore to be measured in step AGeneral assembly250, 500, 750 or 1000 ml.
4. The sedimentation test method according to claim 1, characterised in that the measured volume dose V of the measured dose of flocculant solution in step CFlocculating agentComprises the following steps:
Vflocculating agent=(GDry ore×q)÷VIn the aggregate of the above-mentioned processes,
Gdry ore=VGeneral assembly÷(R+1÷P),
R=(1-COre pulp)÷CThe slurry of the ore is mixed with the ore slurry,
wherein: q is the dosage of the flocculating agent and the unit g/t;
and P is the ore specific gravity of the ore pulp to be detected.
5. The sedimentation test method according to claim 1, wherein the sedimentation curve is plotted according to time and a height H of a supernatant interface in the step C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765771.3A CN107515179B (en) | 2017-08-30 | 2017-08-30 | Sedimentation test method of flocculant for fine-grained embedded iron ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765771.3A CN107515179B (en) | 2017-08-30 | 2017-08-30 | Sedimentation test method of flocculant for fine-grained embedded iron ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107515179A CN107515179A (en) | 2017-12-26 |
| CN107515179B true CN107515179B (en) | 2020-07-07 |
Family
ID=60724747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710765771.3A Active CN107515179B (en) | 2017-08-30 | 2017-08-30 | Sedimentation test method of flocculant for fine-grained embedded iron ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107515179B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082267A (en) * | 2019-04-23 | 2019-08-02 | 武汉科技大学 | It is a kind of to measure the method and its application that flocculant concentration is remained in ore dressing return water |
| CN112945813A (en) * | 2021-02-05 | 2021-06-11 | 中南大学 | Testing device and testing method for static flocculation and sedimentation of full-tail mortar in constant-temperature environment |
| CN113603315B (en) * | 2021-08-06 | 2023-07-11 | 中建三局第一建设工程有限责任公司 | Sludge dewatering process based on flocculation reaction characteristics |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418555A (en) * | 2011-08-11 | 2012-04-18 | 安徽大昌矿业集团有限公司 | Method for filling mine goaf by utilizing high-concentration all tailing cement |
| CN103743650A (en) * | 2014-01-29 | 2014-04-23 | 长沙矿山研究院有限责任公司 | Testing method for maximum settling concentration and maximum settling volume weight of tailing mortar |
| CN104722395A (en) * | 2015-02-13 | 2015-06-24 | 湖北鑫鹰环保科技股份有限公司 | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof |
| CN106065782A (en) * | 2016-05-30 | 2016-11-02 | 安徽开发矿业有限公司 | A kind of big flow high concentration structure stream full tail sand cemented filling technique |
-
2017
- 2017-08-30 CN CN201710765771.3A patent/CN107515179B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418555A (en) * | 2011-08-11 | 2012-04-18 | 安徽大昌矿业集团有限公司 | Method for filling mine goaf by utilizing high-concentration all tailing cement |
| CN103743650A (en) * | 2014-01-29 | 2014-04-23 | 长沙矿山研究院有限责任公司 | Testing method for maximum settling concentration and maximum settling volume weight of tailing mortar |
| CN104722395A (en) * | 2015-02-13 | 2015-06-24 | 湖北鑫鹰环保科技股份有限公司 | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof |
| CN106065782A (en) * | 2016-05-30 | 2016-11-02 | 安徽开发矿业有限公司 | A kind of big flow high concentration structure stream full tail sand cemented filling technique |
Non-Patent Citations (6)
| Title |
|---|
| 全尾砂絮凝沉降特性研究;何哲祥 等;《第八届国际充填采矿会议论文集》;20040930;第2、3、6节 * |
| 全尾砂絮凝沉降规律实验研究;韩亮 等;《矿业研究与开发》;20170331;第37卷(第3期);第1-3节，表2-4，图1-4 * |
| 普通浓密机高效化改造技术的应用;李晓文 等;《黄金》;19961231;第17卷(第8期);第3.2、3.3节 * |
| 某红土矿原矿沉降试验研究;某红土矿原矿沉降试验研究;《矿冶》;20170228;第26卷(第1期);摘要，第3.2、3.5、4节，图2、5 * |
| 膏体充填尾矿浓密规律初探;刘晓辉 等;《金属矿山》;20091231(第9期);第1-3节，表2-4，图1-4 * |
| 非离子絮凝剂对微细粒尾矿絮凝沉降的影响;韩瑞 等;《中国矿业》;20160531;第25卷(第5期);第1-3节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107515179A (en) | 2017-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107515179B (en) | Sedimentation test method of flocculant for fine-grained embedded iron ore | |
| CN104692720B (en) | A kind of copper tailing is non-burning brick and preparation method thereof | |
| CN109265120A (en) | A kind of filling in mine material and its preparation facilities and preparation method and cementing agent for filling in mine slurry | |
| CN108178578B (en) | Underwater undispersed concrete | |
| CN107500634A (en) | A kind of application of cemented filling material containing polypropylene fibre in mining with stowing | |
| CN101733200A (en) | Method for processing bauxite tailings by flocculating agent | |
| CN107522455A (en) | A kind of preparation method of the tailing-filled material in mine | |
| CN104722395A (en) | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof | |
| CN111116076A (en) | Preparation method of lead-zinc ore tailing sand filling body cementing material | |
| CN103342527A (en) | Waste concrete reclaimed tunnel back lining grouting material and preparation method thereof | |
| Wang et al. | Cemented backfilling technology with unclassified tailings based on vertical sand silo | |
| CN101805161A (en) | Bonding agent of baking-free bricks prepared from drilling well solid waste materials | |
| CN107382156A (en) | Application of the tailings packing material in Pb-Zn deposits filling | |
| CN108412541B (en) | It is a kind of for handling the consolidated fill system and placement method in goaf | |
| CN104998763B (en) | Determining method for flocculating flotation granularity of micro-fine particle inbuilt hematite ores | |
| CN107442286B (en) | A kind of flotation separation method of quartz and calcite | |
| CN103977883B (en) | Dry pile method suitable for rainy humid area tailings | |
| CN208814896U (en) | A kind of preparation facilities of filling in mine material | |
| CN114195472B (en) | Preparation method of superfine tailing cemented filling slurry with high fluidity and high curing strength | |
| CN110082267A (en) | It is a kind of to measure the method and its application that flocculant concentration is remained in ore dressing return water | |
| CN105777014B (en) | A kind of high pumping phosphate mine packing material and preparation method thereof | |
| CN115010458A (en) | Coal mine underground filling material prepared from metal ore overflow tailings and process and application thereof | |
| Zou et al. | Study on the relation between tailing particle size and tailing slurry underflow concentration | |
| Xu et al. | Study on the Effect of Flocculation and Sedimentation on the Mechanical Properties of Iron Tailing Sand | |
| CN106186961A (en) | A kind of colliery rubber solid material and spoil mastic thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |