CN111215253A - Low-rank coal flotation reagent and flotation method - Google Patents
Low-rank coal flotation reagent and flotation method Download PDFInfo
- Publication number
- CN111215253A CN111215253A CN202010075784.XA CN202010075784A CN111215253A CN 111215253 A CN111215253 A CN 111215253A CN 202010075784 A CN202010075784 A CN 202010075784A CN 111215253 A CN111215253 A CN 111215253A
- Authority
- CN
- China
- Prior art keywords
- flotation
- low
- parts
- rank coal
- ore pulp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- B03D1/02—Froth-flotation processes
-
- 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
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A flotation reagent and a flotation method for low-rank coal, which are suitable for recycling low-rank coal resources. The mass portion ratio is as follows: waste lubricating oil: 40-60 parts of short-chain ester: 5-25 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts of a mixture; adding a low-rank coal flotation reagent and water into the stirring barrel I for stirring, then adding low-rank coal into the stirring barrel II for stirring and controlling the concentration of ore pulp, and then carrying out flotation. The flotation agent has good flotation effect and saves the medicine, the dispersion performance of the agent in the ore pulp is promoted by adding the flotation agent into the ore pulp stirring barrel in advance, and the full contact and adsorption of the pre-selection agent and particles are ensured so as to exert the optimal performance of the composite flotation agent.
Description
Technical Field
The invention relates to a low-rank coal flotation reagent and a flotation method, in particular to a high-efficiency low-rank coal flotation reagent and a flotation method which are suitable for recycling low-rank coal resources in coal enterprises.
Background
The reserves of low-rank coal in China, including brown coal, long flame coal, non-caking coal and weakly caking coal, are very rich and account for about 40 percent of the whole coal resources. With the consumption and shortage of coal resources such as high-quality coking coal and the like, the exploitation and utilization of low-rank coal has great significance for ensuring the energy supply mainly based on coal in China, realizing the high-efficiency utilization of low-quality coal resources and reducing the environmental pollution of coal systems. The improvement of the mining mechanization degree and the development of dense-medium coal separation enable coal to present the characteristic of fine particle size, and flotation is one of the most economic and effective technologies for separating fine coal slime. However, the low-rank coal generally has high water content, low calorific value and strong particle surface hydrophilicity, and the dosage of reagents (collecting agents and foaming agents) required by each ton of dry coal slime flotation is between 10kg and 60 kg. Meanwhile, the complex mineral laying structure greatly reduces the flotation efficiency of the low-rank coal. The main reasons for causing the higher consumption of the flotation reagent of the low-order coal slime are as follows: (1) because the low-rank coal has low deterioration degree, the particle surface contains a large number of oxygen-containing functional groups, and the oxygen-containing functional groups on the surface are easy to form hydrogen bonds with water molecules, so that the hydrocarbon oil collecting agent is difficult to effectively spread on the particle surface; (2) the surface of the low-rank coal is usually porous and loose, and the developed pore structure can enable the flotation reagent to be directly adsorbed by the low-rank coal, so that the effect of the flotation reagent is reduced; (3) the traditional collector for low-rank coal flotation is generally hydrocarbon oil such as diesel oil or kerosene, the hydrocarbon oil has the characteristics of high viscosity, difficulty in dispersion in water and the like, in one-time flotation, the flotation process of low-rank coal can be strengthened to a certain extent by adding excessive collector, but the dispersion of the collector is not facilitated due to higher dosage. The problems of poor flotation effect of low-rank coal, high consumption of chemicals and the like are one of the difficult problems which plague the production of coal preparation plants.
Aiming at strengthening the flotation process of low-rank coal, domestic scholars propose a plurality of technical methods. The method mainly focuses on particle surface pretreatment, such as ultrasonic, microwave and heating pretreatment on the surface of low-rank coal to improve the proportion of hydrophobic groups on the surface of particles, grinding pretreatment is carried out on the low-rank coal to strip an oxide layer, and a surfactant is added or a polar collector is adopted to improve hydrophobicity in the pulp mixing process; also, oil collectors have been prepared by researchers to produce oil bubbles to improve their flotation performance. Although the methods have certain experimental effects, the problems of difficult floatation and high drug consumption of the low-rank coal are not fundamentally solved, and the required experimental requirements are difficult to meet in the actual production.
Disclosure of Invention
The technical problem is as follows: aiming at the defects of the technology, the efficient low-rank coal flotation reagent and the flotation method which have the advantages of high flotation efficiency, flotation reagent consumption saving and reagent dispersibility improvement in ore pulp, so that the best performance of the reagent is ensured to be exerted, and green and efficient utilization of low-rank coal resources is realized are provided.
The technical content is as follows: the invention relates to a low-rank coal flotation reagent which comprises the following components in parts by mass: waste lubricating oil: 40-60 parts of short-chain ester: 5-25 parts, span 80: 10 parts of fatty acid polyoxyethylene ether:10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts of a mixture; the components are not poured into the same container in sequence, and are stirred and mixed uniformly.
A flotation method of a low-rank coal flotation reagent uses the low-rank coal flotation reagent as a flotation reagent,
the method comprises the following specific steps:
adding a low-rank coal flotation reagent and water into a stirring barrel I, starting the stirring barrel I for stirring, and mixing the low-rank coal flotation reagent under the action of impeller shearing and water to form a stirred composite reagent;
conveying the stirred composite reagent into a stirring barrel II by using a slurry pump, adding the low-rank coal to be floated into a second section of flotation stirring barrel, and supplementing water into the stirring barrel II to keep the concentration of the ore pulp in the barrel;
starting a stirring barrel II to stir to obtain fully mixed ore pulp I, so that the low-rank coal flotation reagent is effectively diffused, and the diffused low-rank coal flotation reagent is efficiently contacted with coal and mineral particles in the low-rank coal, so that the low-rank coal flotation reagent is effectively adsorbed and spread on the surfaces of the coal and mineral particles;
conveying the mixed ore pulp I into an ore pulp preprocessor by using a slurry pump II, simultaneously adding a corresponding foaming agent into the ore pulp preprocessor, starting an impeller in the ore pulp preprocessor to mix the mixed ore pulp I with the foaming agent, finishing primary mineralization under the action of a low-rank coal flotation reagent and the foaming agent to obtain mixed ore pulp II, and feeding the mixed ore pulp II into a flotation column along a pipeline through a slurry pump III to perform flotation operation;
in the flotation operation, the mixed ore pulp II is completely mineralized in the flotation column, the completely mineralized ore pulp is subjected to flotation, flotation concentrate is discharged through an overflow weir at the upper part of the flotation column in a pipe mode, and tailings after flotation are discharged through a bottom flow port of the flotation column;
and repeating the process until the flotation process is completely finished.
The stirring time of the stirring barrel I is 5-10 minutes, and the stirring time of the stirring barrel II is 2-5 minutes.
The concentration of the ore pulp in the stirring barrel II is kept at 80 g/L.
In actual use, the low-rank coal is dry coal slime, the dosage of a low-rank coal flotation reagent per ton of the dry coal slime is 1.8kg, the foaming agent is fusel, and the dosage of the foaming agent per ton of the dry coal slime is 0.5 kg.
Has the advantages that:
the low-rank coal flotation reagent disclosed by the invention can be used for compounding different types of reagents, so that the synergistic effect of the various types of reagents on the surface of the low-rank coal is fully exerted, the flotation effect is improved, the yield of the low-rank coal flotation clean coal is increased, and the consumption of the low-rank coal flotation reagent is greatly reduced. The waste lubricating oil and the short-chain ester can be effectively adsorbed on the surface of the low-rank coal, and the hydrophobicity of the surface of low-rank coal particles is enhanced. The span 80 and the fatty acid polyoxyethylene ether promote the dispersion of the hydrocarbon oil in the ore pulp on the basis of enhancing the hydrophobicity of the surface of the low-order coal particles, and bridge the adsorption of the waste lubricating oil and the short-chain ester on the surface of the low-order coal to a certain extent. CuSO4The coordination adsorption of polar components in the medicament and oxygen-containing sites on the surfaces of low-rank coal particles can be promoted, and double electric layers among particles and bubbles in a solution can be compressed by NaCl, so that the electrostatic repulsion effect among particles and bubbles is reduced. The flocculant can enhance the dispersion of the agent and simultaneously improve the selectivity of the flotation agent, thereby realizing the selective flocculation of carbon and ash in the low-rank coal;
according to the flotation method, the flotation reagent and the low-rank coal to be selected are subjected to pre-slurry mixing treatment, so that the flotation reagent is fully contacted with particles before being selected, hydrogen bond adsorption of water molecules is avoided, the action efficiency of the flotation reagent is greatly improved, and the flotation method has great practical significance in high-efficiency flotation of the low-rank coal;
the efficient composite agent is not only suitable for the flotation upgrading process of low-rank coal, but also suitable for oxidized coal or other difficult-to-float coal; the new medicament adding process is also suitable for the use of oil medicaments in other mineral flotation.
Drawings
FIG. 1 is a schematic view of the configuration of the sorting apparatus of the present invention.
In the figure: 1-stirring barrel I, 2-slurry pump I, 3-stirring barrel II, 4-slurry pump II, 5-pulp preprocessor, 6-slurry pump, 7-flotation column, a-mixed compound agent, b-compound agent after secondary stirring, c-low-rank coal, d-mixed pulp, e-flotation concentrate, f-tailings, g-flushing water
Detailed Description
The invention will be further described in the following with reference to the accompanying drawings:
as shown in figure 1, the low-rank coal flotation reagent is characterized by comprising the following components in parts by mass: waste lubricating oil: 40-60 parts of short-chain ester: 5-25 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts of a mixture; the components are not poured into the same container in sequence, and are stirred and mixed uniformly.
A flotation method uses a low-rank coal flotation reagent as a flotation reagent, and comprises the following specific steps:
adding a low-rank coal flotation reagent and water into a stirring barrel I1, wherein the stirring time of the stirring barrel I1 is 5-10 minutes, the stirring time of a stirring barrel II 3 is 2-5 minutes, and starting the stirring barrel I1 to stir so that the low-rank coal flotation reagent is mixed under the action of impeller shearing and water to form a stirred composite reagent;
conveying the stirred composite reagent into a stirring barrel II 3 by using a slurry pump I2, adding low-rank coal to be floated into a second-stage flotation stirring barrel 3, and supplementing water into the stirring barrel II 3 to keep the concentration of ore pulp in the barrel at 80 g/L;
starting a stirring barrel II 3 for stirring to obtain fully mixed ore pulp Ib, so that the low-rank coal flotation reagent is effectively diffused, and the diffused low-rank coal flotation reagent is efficiently contacted with coal and mineral particles in the low-rank coal, so that the low-rank coal flotation reagent is effectively adsorbed and spread on the surfaces of the coal and mineral particles;
conveying the mixed ore pulp I b into an ore pulp preprocessor 5 by using a slurry pump II 4, simultaneously adding a corresponding foaming agent c into the ore pulp preprocessor 5, wherein the foaming agent c is fusel, starting an impeller in the ore pulp preprocessor 5 to mix the mixed ore pulp I b with the foaming agent c, finishing preliminary mineralization under the action of a low-rank coal flotation reagent and the foaming agent c to obtain mixed ore pulp II d, and feeding the mixed ore pulp II d into a flotation column 7 along a pipeline through a slurry pump III 6 to perform flotation operation;
in the flotation operation, the mixed ore pulp IId is completely mineralized in the flotation column 7, the completely mineralized ore pulp is subjected to flotation, flotation concentrate e is discharged through an overflow weir at the upper part of the flotation column 7 in a pipe mode, and tailings f after flotation are discharged through a bottom flow port of the flotation column 7; after each flotation the interior of the flotation column 7 is cleaned with washing water g.
The medium-low-rank coal is dry coal slime, the dosage of a low-rank coal flotation reagent per ton of the dry coal slime is 1.8kg, and the dosage of a foaming agent c is 0.5 kg.
Example 1
A flotation process using a low-rank coal flotation reagent specifically comprises the following steps:
firstly, adding the composite medicament into a stirring barrel I1 according to corresponding mass parts, starting an impeller of the stirring barrel to stir the composite medicament for 5-10 minutes, and fully mixing the medicament under the action of impeller shearing and fluid.
Secondly, compound medicament stirring back is carried to agitator II 3 through the pipeline by sediment stuff pump I2 in, will treat the low order coal of flotation simultaneously and add agitator II 3, adds the make-up water and makes the concentration of whole ore pulp keep at 80 g/L.
Further, the compound medicament and the low-rank coal are fully mixed in the stirring barrel II for 2-4 minutes, the compound medicament is effectively dispersed into the solution, meanwhile, the medicament is in efficient contact with the particles, and the medicament is adsorbed and spread on the surfaces of the particles.
Further, after the medicament and the low-rank coal are completely mixed, the ore pulp b is conveyed to an ore pulp preprocessor 5 through a slurry pump II 4, meanwhile, a corresponding foaming agent c is added into the ore pulp preprocessor, the mixed ore pulp in the ore pulp preprocessor is circulated through rotation of an impeller in the ore pulp preprocessor, preliminary mineralization is completed under the conditions of a collecting agent and the foaming agent, and the mixed ore pulp d after the preliminary mineralization is completed is fed into a flotation column 7 through a slurry pump 6 along a pipeline to be subjected to flotation operation.
Further, the flotation concentrate e in the fully mineralized pulp is discharged from an overflow weir at the upper part of the flotation column 7 through a pipeline, and the tailings f in the fully mineralized pulp sink in the flotation column 7 and are discharged from a bottom flow port through a pipeline.
And repeating the process until the flotation process is completely finished.
Specifically, the flotation reagent comprises the following substances in parts by mass:
(I) waste lubricating oil: 40 parts, short-chain ester: 25 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts.
(II) waste lubricating oil: 60 parts, short-chain ester: 5 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts.
(III) waste lubricating oil: 50 parts, short-chain ester: 15 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 portions of
The flotation test results corresponding to the three proportioning data (the used collecting agent, namely the flotation agent, is 1.8kg/t, the foaming agent is fusel, is 0.5kg/t, and the low-rank coal adopts fresh coal slime water which is not flocculated in a certain coal preparation plant of Shendong group):
example 2
A flotation process using a low-rank coal flotation reagent specifically comprises the following steps:
firstly, adding the composite medicament into a stirring barrel I1 according to corresponding mass parts, starting an impeller of the stirring barrel to stir the composite medicament for 3-5 minutes, and fully mixing the medicament under the action of impeller shearing and fluid. Secondly, compound medicament stirring back, pass through the pipeline by sediment stuff pump I2 and transport to another agitator II in, will wait that the low order coal of flotation adds agitator II 3 simultaneously, adds the make-up water and makes the concentration of whole ore pulp keep at 80 g/L. And (3) fully mixing the low-rank coal with the composite medicament in the stirring barrel II for 4-6 minutes, effectively dispersing the composite medicament into the solution, and simultaneously enabling the medicament to be in high-efficiency contact with the particles, so that the medicament is adsorbed and spread on the surfaces of the particles. Further, after the medicament and the low-rank coal are completely mixed, the ore pulp b is conveyed to an ore pulp preprocessor 5 through a slurry pump II 4, meanwhile, a corresponding foaming agent c is added into the ore pulp preprocessor, the mixed ore pulp in the ore pulp preprocessor is circulated through rotation of an impeller in the ore pulp preprocessor, preliminary mineralization is completed under participation of a collecting agent and the foaming agent, and the mixed ore pulp d after the preliminary mineralization is completed is fed into a flotation column 7 through a slurry pump 6 along a pipeline to be subjected to flotation operation. And the flotation concentrate e in the completely mineralized ore pulp is discharged from an overflow weir at the upper part of the flotation column 7 through a pipeline, and the tailings f in the completely mineralized ore pulp sink in the flotation column 7 and are discharged from a bottom flow port through a pipeline.
And repeating the process until the flotation process is completely finished.
The flotation reagent comprises the following substances in parts by mass:
(I) waste lubricating oil: 40 parts, short-chain ester: 25 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts.
(II) waste lubricating oil: 60 parts, short-chain ester: 5 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts.
(III) waste lubricating oil: 50 parts, short-chain ester: 15 parts, span 80: 10 parts of fatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 portions of
The flotation test results corresponding to the three proportioning data (the used collecting agent, namely the flotation agent, is 1.8kg/t, the foaming agent is fusel, is 0.5kg/t, and the low-rank coal adopts fresh coal slime water which is not flocculated in a certain coal preparation plant of Shendong group):
Claims (5)
1. a low-rank coal flotation reagent is characterized in that: the medicament comprises the following raw materials in parts by mass: waste lubricating oil: 40-60 parts of short-chain ester: 5-25 parts, span 80: 10 portions ofFatty acid polyoxyethylene ether: 10 parts of CuSO4: 5 parts, NaCl: 6 parts, flocculant: 4 parts of a mixture; the components are not poured into the same container in sequence, and are stirred and mixed uniformly.
2. A flotation process using the low rank coal flotation reagent of claim 1, wherein: a low-rank coal flotation reagent is used as a flotation reagent,
the method comprises the following specific steps:
adding a low-rank coal flotation reagent and water into a stirring barrel I (1), starting the stirring barrel I (1) for stirring, and mixing the low-rank coal flotation reagent under the action of impeller shearing and water to form a stirred composite reagent;
conveying the stirred composite reagent to a stirring barrel II (3) by using a slurry pump (2), adding low-rank coal to be floated to a second section of flotation stirring barrel (3), and supplementing water into the stirring barrel II (3) to keep the concentration of ore pulp in the barrel;
starting a stirring barrel II (3) to stir to obtain fully mixed ore pulp I (b), so that the low-rank coal flotation reagent is effectively diffused, and the diffused low-rank coal flotation reagent is efficiently contacted with coal and mineral particles in the low-rank coal, so that the low-rank coal flotation reagent is effectively adsorbed and spread on the surfaces of the coal and mineral particles;
conveying the mixed ore pulp I (b) to an ore pulp preprocessor (5) by using a slurry pump II (4), adding a foaming agent (c) into the ore pulp preprocessor (5), starting an impeller in the ore pulp preprocessor (5) to mix the mixed ore pulp I (b) with the foaming agent (c), finishing primary mineralization under the action of a low-rank coal flotation reagent and the foaming agent (c) to obtain mixed ore pulp II (d), and feeding the mixed ore pulp II (d) into a flotation column (7) along a pipeline through a slurry pump III (6) for flotation operation;
in the flotation operation, the mixed ore pulp II (d) is completely mineralized in the flotation column (7), the completely mineralized ore pulp is subjected to flotation, flotation concentrate (e) is discharged through an overflow weir at the upper part of the flotation column (7) in a pipe mode, and tailings (f) after flotation are discharged through a bottom flow port of the flotation column (7);
and repeating the process until the flotation process is completely finished.
3. A flotation process according to claim 2, characterized in that: the stirring time of the stirring barrel I (1) is 5-10 minutes, and the stirring time of the stirring barrel II (3) is 2-5 minutes.
4. A flotation process according to claim 2, characterized in that: the concentration of the ore pulp in the stirring barrel II (3) is kept at 80 g/L.
5. A flotation process according to claim 2, characterized in that: the low-rank coal is dry coal slime, the dosage of a low-rank coal flotation reagent per ton of the dry coal slime is 1.8kg, the foaming agent (c) is fusel, and the dosage per ton of the dry coal slime is 0.5 kg.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010075784.XA CN111215253B (en) | 2020-01-22 | 2020-01-22 | Low-rank coal flotation reagent and flotation method |
| PCT/CN2020/132021 WO2021147508A1 (en) | 2020-01-22 | 2020-11-27 | Efficient flotation reagent for low-rank coal and flotation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010075784.XA CN111215253B (en) | 2020-01-22 | 2020-01-22 | Low-rank coal flotation reagent and flotation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111215253A true CN111215253A (en) | 2020-06-02 |
| CN111215253B CN111215253B (en) | 2021-04-20 |
Family
ID=70831260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010075784.XA Active CN111215253B (en) | 2020-01-22 | 2020-01-22 | Low-rank coal flotation reagent and flotation method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111215253B (en) |
| WO (1) | WO2021147508A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916582A (en) * | 2021-01-26 | 2021-06-08 | 中国矿业大学 | Gasification fly ash decarburization method by combined flotation of mechanical activation and compound medicament |
| WO2021147508A1 (en) * | 2020-01-22 | 2021-07-29 | 中国矿业大学 | Efficient flotation reagent for low-rank coal and flotation method |
| CN113522182A (en) * | 2021-07-20 | 2021-10-22 | 中国矿业大学 | Preparation method of used oil collecting agent for low-rank coal flotation |
| CN113816545A (en) * | 2021-09-13 | 2021-12-21 | 中国矿业大学 | Cooperative disposal method for automobile disassembly/repair wastewater and low-rank coal fine slime |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308132A (en) * | 1977-09-30 | 1981-12-29 | James R. McCarthy | Bituminous coal reagent and flotation process |
| CN85106071A (en) * | 1985-08-14 | 1986-01-10 | 轻工业部日用化学工业科学研究所 | Oil-in-water emulsion used in flotation of coal slurry |
| CN85103689A (en) * | 1985-05-18 | 1986-12-10 | 三井造船株式会社 | Flotation recovery method of micro-granulated coal |
| CN1115264A (en) * | 1994-06-21 | 1996-01-24 | 湖南省株洲洗煤厂 | Coal flotation agent compsn. and its prepn. method |
| CN1856636A (en) * | 2003-09-30 | 2006-11-01 | Cytec技术有限公司 | Solid-liquid separation of oil-based muds |
| US20150144570A1 (en) * | 2010-12-30 | 2015-05-28 | Nalco Company | Glycerides and fatty acid mixtures and methods of using same |
| CN105636704A (en) * | 2013-10-01 | 2016-06-01 | 艺康美国股份有限公司 | Frothers for mineral flotation |
| CN105728179A (en) * | 2016-03-22 | 2016-07-06 | 中国矿业大学 | Low-rank coal hot pressing and floating process |
| CN106675682A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for preparing biomass briquette coal by dehydrating and upgrading lignite |
| CN108672098A (en) * | 2018-08-23 | 2018-10-19 | 中国矿业大学 | A kind of coal slime flotation micro emulsion collecting agent and preparation method containing nano-particle |
| US10130956B2 (en) * | 2008-07-25 | 2018-11-20 | Cytec Technology Corp. | Flotation reagents and flotation processes utilizing same |
| CN109957434A (en) * | 2019-03-27 | 2019-07-02 | 中国矿业大学 | It is a kind of inhibit upgraded brown coal stockpile and store during spontaneous combustion inhibitor and its preparation, application method |
| CN110142143A (en) * | 2019-04-09 | 2019-08-20 | 广东省资源综合利用研究所 | A kind of collecting system and its preparation method and application of W/O/W multi-phase emulsion preparation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340467A (en) * | 1980-03-20 | 1982-07-20 | American Cyanamid Company | Flotation of coal with latex emulsions of hydrocarbon animal or vegetable based oil |
| CN101722111B (en) * | 2010-01-11 | 2012-11-28 | 山西医科大学 | Coal slime flotation collector and preparation method thereof |
| CN102553725B (en) * | 2012-02-08 | 2014-06-11 | 中南大学 | Composite floatation collector and preparation method thereof |
| CN111215253B (en) * | 2020-01-22 | 2021-04-20 | 中国矿业大学 | Low-rank coal flotation reagent and flotation method |
-
2020
- 2020-01-22 CN CN202010075784.XA patent/CN111215253B/en active Active
- 2020-11-27 WO PCT/CN2020/132021 patent/WO2021147508A1/en active Application Filing
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308132A (en) * | 1977-09-30 | 1981-12-29 | James R. McCarthy | Bituminous coal reagent and flotation process |
| CN85103689A (en) * | 1985-05-18 | 1986-12-10 | 三井造船株式会社 | Flotation recovery method of micro-granulated coal |
| CN85106071A (en) * | 1985-08-14 | 1986-01-10 | 轻工业部日用化学工业科学研究所 | Oil-in-water emulsion used in flotation of coal slurry |
| CN1115264A (en) * | 1994-06-21 | 1996-01-24 | 湖南省株洲洗煤厂 | Coal flotation agent compsn. and its prepn. method |
| CN1856636A (en) * | 2003-09-30 | 2006-11-01 | Cytec技术有限公司 | Solid-liquid separation of oil-based muds |
| US10130956B2 (en) * | 2008-07-25 | 2018-11-20 | Cytec Technology Corp. | Flotation reagents and flotation processes utilizing same |
| US20150144570A1 (en) * | 2010-12-30 | 2015-05-28 | Nalco Company | Glycerides and fatty acid mixtures and methods of using same |
| CN105636704A (en) * | 2013-10-01 | 2016-06-01 | 艺康美国股份有限公司 | Frothers for mineral flotation |
| CN105728179A (en) * | 2016-03-22 | 2016-07-06 | 中国矿业大学 | Low-rank coal hot pressing and floating process |
| CN106675682A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for preparing biomass briquette coal by dehydrating and upgrading lignite |
| CN108672098A (en) * | 2018-08-23 | 2018-10-19 | 中国矿业大学 | A kind of coal slime flotation micro emulsion collecting agent and preparation method containing nano-particle |
| CN109957434A (en) * | 2019-03-27 | 2019-07-02 | 中国矿业大学 | It is a kind of inhibit upgraded brown coal stockpile and store during spontaneous combustion inhibitor and its preparation, application method |
| CN110142143A (en) * | 2019-04-09 | 2019-08-20 | 广东省资源综合利用研究所 | A kind of collecting system and its preparation method and application of W/O/W multi-phase emulsion preparation |
Non-Patent Citations (2)
| Title |
|---|
| ZHANG, R等: "Effect of microemulsion on low-rank coal flotation by mixing DTAB and diesel oil", 《FUEL》 * |
| 中国化工学会精细化工专业委员会等: "《现代化工技术》", 31 July 1997, 黑龙江科学技术出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147508A1 (en) * | 2020-01-22 | 2021-07-29 | 中国矿业大学 | Efficient flotation reagent for low-rank coal and flotation method |
| CN112916582A (en) * | 2021-01-26 | 2021-06-08 | 中国矿业大学 | Gasification fly ash decarburization method by combined flotation of mechanical activation and compound medicament |
| CN113522182A (en) * | 2021-07-20 | 2021-10-22 | 中国矿业大学 | Preparation method of used oil collecting agent for low-rank coal flotation |
| CN113816545A (en) * | 2021-09-13 | 2021-12-21 | 中国矿业大学 | Cooperative disposal method for automobile disassembly/repair wastewater and low-rank coal fine slime |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111215253B (en) | 2021-04-20 |
| WO2021147508A1 (en) | 2021-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111215253B (en) | Low-rank coal flotation reagent and flotation method | |
| CN100548496C (en) | A kind of floatation method of difficult-to-float coal | |
| CN106799310B (en) | A kind of low-order coal coal slime flotation collector and its application | |
| CN1322934C (en) | Collophanite direct flotation and reverse flotation technique | |
| CN105797868B (en) | The beneficiation method of low-grade zinc oxide ore is recycled from lead-zinc ore floating tailing | |
| CN108380397A (en) | A kind of recovery method of low concentration calcite type containing mica fluorite tailing | |
| US20220001395A1 (en) | Flotation process for treating coal slime by using salt-containing waste water | |
| CN102744160B (en) | Iso-floatable separation process of siliceous-calcareous collophanite | |
| WO2020252960A1 (en) | Sorting and recycling system and sorting and recycling process for coarse-grained coal slurry | |
| CN109731697A (en) | A kind of width grade floatation system and technique | |
| CN106944263B (en) | A kind of Collophane anti-floatation collector and its preparation method and application method | |
| CN105214853A (en) | A kind of brown coal floatation method | |
| CN103447145A (en) | Ore dressing method for recycling sulfur and arsenic from tin-lean multi-metal sulfide flotation tailings | |
| CN105880032B (en) | A kind of mid-low grade collophanite ore floats combined sorting method again | |
| CN104741211A (en) | Grading size mixing and bulk flotation separation process | |
| CN103420552A (en) | Method for processing oily sludge | |
| CN111389597B (en) | Polar mixed reagent for low-rank coal flotation and flotation process | |
| CN105327785A (en) | Flotation technology of PPM level low-iron high-purity quartz sand | |
| CN106669977B (en) | A kind of oxidized coal slime method for separating | |
| CN108480056B (en) | Magnetic particle-based enhanced flotation size mixing method | |
| CN110314767A (en) | A kind of low order/oxidized coal slime floating agent and application method | |
| CN107442293B (en) | A kind of superfine granule ub-bituminous coal selective flocculation-grey method of reverse flotation drop | |
| CN215087945U (en) | Coal gasification ash sorting system based on spiral chute | |
| CN203484231U (en) | Triple-product cyclone micro bubble flotation column separation device | |
| CN115213019A (en) | Coarse-grained spodumene enhanced flotation collecting agent and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| 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 |