CN102443071A - Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof - Google Patents
Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof Download PDFInfo
- Publication number
- CN102443071A CN102443071A CN2011103624107A CN201110362410A CN102443071A CN 102443071 A CN102443071 A CN 102443071A CN 2011103624107 A CN2011103624107 A CN 2011103624107A CN 201110362410 A CN201110362410 A CN 201110362410A CN 102443071 A CN102443071 A CN 102443071A
- Authority
- CN
- China
- Prior art keywords
- composite modified
- modified starch
- reverse flotation
- parts
- suppressor factor
- 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
Abstract
The invention discloses composite modified starch as a hematite reverse flotation inhibitor and a preparation method thereof. The composite modified starch comprises 100 weight portions of raw material starch, 0.5-10 weight portions of sodium hypochlorite as an oxidizing agent, 1.2-7.0 weight portions of sodium hydrosulphite, 0.2-1.2 weight portions of sodium nitrite as esterification reagents, 0.5-3.5 weight portions of 3-chloro-2-hydroxypropyl-trimethyl quaternary ammonium salt as a cationic reagent, 3.0-7.0 weight portions of caustic alkali, and 25-40 weight portions of water. The composite modified starch contains carboxylic groups, sulfonic anions, and quaternary ammonium cations, and has the advantages of cold water solubility and low viscosity, and has the advantages of increasing the yield of hematite concentrate, improving the filtering conditions of iron ore pulp, and the like.
Description
Technical field
The invention belongs to reverse floatation agent preparing technical field in the ore dressing engineering, relate in particular to hematite reverse flotation suppressor factor composite modified starch and preparation method thereof.
Background technology
Rhombohedral iron ore is a kind of oxidized form ore deposit that under oxidizing condition, forms, and it is mainly composed and is stored in appositional pattern, weathering woods filter type and part and receives in rotten appositional pattern, the relevant iron ore with volcano-intruder operations.The reserves of China's rhombohedral iron ore have been verified at present and have been accounted for 18.1% of national iron ore total reserves, have poor, assorted, thin, characteristics such as associated minerals ratio height.According to statistics, China's red iron iron ore average grade 31.27% compares with Australia, Brazilian import ore deposit, and China's iron ore concentrate quality still has obvious gap.For example, mostly Australia is red iron rich ore, fine ore grade 62%, lump ore grade 64%, SiO
2Content 3% ~ 4%; Brazil also mainly is red iron rich ore, ore deposit grade 65% ~ 66%, lump ore grade 66% ~ 67%, SiO
2Content 1% ~ 2%.Therefore, further improving the iron ore grade, reduce foreign matter content, still is the vital task that the mineral processing in China worker faces.See that from improving iron ore concentrate quality angle anion reverse floatation technology has played enormous function.The Anshan iron and steel plant Qidashan iron ore is the maximum iron dressing-works of China; Year handle head grade and be 8,000,000 tons of 29% rhombohedral iron ore, employing weight-magnetic-direct floatation process calendar year 2001 before, concentrate grade reaches 63%; And use weight-magnetic-reverse floatation process after 2002 instead, concentrate grade reaches more than 67.4%.
In hematite reverse flotation technology, W-Gum is the typical suppressor factor of iron oxide ore.The ultimate principle that common starch suppresses rhombohedral iron ore is: starch is after the rhombohedral iron ore surface adsorption; Many hydrophilic functional groups that starch itself exists form hydrophilic layer on rhombohedral iron ore thing surface; Can weaken the surface action power of collecting agent and rhombohedral iron ore grain; Intercept the rhombohedral iron ore grain and combine, reduce the flotability of rhombohedral iron ore, thereby rhombohedral iron ore is produced restraining effect with flotation bubble.Yet between rhombohedral iron ore thing and gangue mineral, both surface physicses and chemical property have certain difference, but also have some similar characteristics, and therefore, with common starch during as suppressor factor, it suppresses selectivity and receives certain limitation.
In order to improve starch selection of inhibitors property, there is the investigator once to propose to adopt modified starch after the modification as the suppressor factor of rhombohedral iron ore.Also have research to show; When with cationic starch during as the rhombohedral iron ore suppressor factor; In pH=7 ~ 11 scopes; Gangues such as quartz have more negative charge than rhombohedral iron ore, and cationic starch is 3 times of rhombohedral iron ore in the absorption of quartzy mineral surface, and anionic starch in the absorption on the rhombohedral iron ore than much bigger on quartz.Therefore, in reverse floatation process, select for use anionic starch can effectively improve selection of inhibitors property.As; Number of patent application 200610124741.6 discloses a kind of beneficiation method of roe shape high-phosphorus hematite; Adopt sulfonated starch to suppress roe shape high-phosphorus hematite, impurity such as phosphorus, silicon are removed, obtain iron grade more than 63%, iron recovery greater than 75% iron ore concentrate through reverse flotation.
Yet when using anionic starchs such as sulfonate radical or carboxylate radical as suppressor factor, still have following problem: (1) starch viscosity is high, causes boiling operation and pipe-line transportation difficulty; (2) contain assorted positively charged ions such as some calcium, manganese, iron in the flotation system, the negatively charged ion in the starch is had necessarily " neutralization " effect, reduced the result of use of anionic starch; (3) along with iron ore fine grinding degree is increasingly high, add that ore pulp itself has higher viscosity, the iron concentrate filtering difficulty still is difficult to solve.
Summary of the invention
The objective of the invention is to solve the deficiency in the above-mentioned technology; A kind of hematite reverse flotation suppressor factor composite modified starch and preparation method thereof is provided; This composite modified starch cold water solubles, LV, the productive rate that can increase red iron ore concentrate and the filtration condition that improves iron ore concentrate slurry.
To achieve these goals, the technical scheme of the present invention's employing is:
A kind of hematite reverse flotation suppressor factor composite modified starch is a raw material by starch, and Youxiaolin is an oxygenant; S-WAT and Sodium Nitrite are esterifying agent, and 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt is a cationic reagent, and caustic alkali is that catalyzer and water are processed; Its proportioning is counted by weight: 100 parts of raw starch, 0.5 ~ 10 part of Youxiaolin, 1.2 ~ 7.0 parts of S-WATs; 0.2 ~ 1.2 part of Sodium Nitrite; 0.5 ~ 3.5 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 3.0 ~ 7.0 parts in caustic alkali, 25 ~ 40 parts in water.
Said starch is selected from tapioca(flour) and the W-Gum any one.
Said caustic alkali is selected from sodium hydroxide and the Pottasium Hydroxide any one.
A kind of preparation method of hematite reverse flotation suppressor factor composite modified starch comprises the steps:
(1) mixing of materials: with 100 parts of starch, 0.5 ~ 10 part of Youxiaolin, 1.2 ~ 7.0 parts of S-WATs; 0.2 ~ 1.2 part of Sodium Nitrite; 0.5 ~ 3.5 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 3.0 ~ 7.0 parts in caustic alkali and 25 ~ 40 parts of adding mixing tanks of water mixed 1 ~ 3 hour;
(2) extruding reaction: adopt twin-screw extruder that mixed material was carried out extruding reaction 2 ~ 10 minutes, reaction comprises oxidation, esterification and etherification reaction;
(3) aftertreatment: reacted product is cooled to room temperature, pulverizes,, promptly obtain product through 100 mesh sieves.
The rotating speed that said mixing tank stirs is 50 ~ 200 r/min.
The working parameter of said twin-screw extruder is: screw slenderness ratio 25, the compression ratio 3.0 of twin screw, screw speed 50 ~ 250 r/min; Front-end temperature is 50 ~ 80 ℃; The stage casing temperature is 130 ~ 170 ℃, and the rear temperature is 190 ~ 240 ℃, extrusion positive pressure 2.0 ~ 3.5MPa.
Its product composite modified starch is white in color or the micro-yellow powder shape; Comprise carboxylate radical, azochlorosulfonate acid anion and quaternary ammonium group positively charged ion, cold water solubles, viscosity is 5 ~ 35mPa.s (6%; 95 ℃); (COOH) quality percentage is 0.012% ~ 0.3% to carboxyl, and the quality percentage of sulphur (S) is 0.18% ~ 2.0%, and the quality percentage of nitrogen (N) is 0.02% ~ 0.25%.
Compared with prior art, beneficial effect of the present invention is following:
The present invention prepares a kind of cold water solubles through single step reaction through extrusion technique, and LV contains the composite modified starch of carboxylate radical, azochlorosulfonate acid anion group and quaternary ammonium group cation group, and this product has following characteristics:
(1) assorted positively charged ions such as the calcium in the repulsion ore pulp, iron, protection carboxylate radical, azochlorosulfonate acid anion group adsorb rhombohedral iron ore stone selectively;
(2) can play wadding to superfine rhombohedral iron ore stone and gather effect, can increase the productive rate and the filtration condition that improves iron ore concentrate slurry of red iron ore concentrate;
(3) cold water solubles, viscosity is low, has exempted cooking process during use, and the pipeline good fluidity has solved the problem of blocking pipe.
This product promptly is applicable to negatively charged ion collecting agent reverse floatation process, also is applicable to the cation-collecting agent reverse floatation process.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but embodiment of the present invention is not limited to the scope that embodiment representes.
Embodiment 1
Get 100 parts of tapioca(flour)s, 0.5 part of Youxiaolin, 1.2 parts of S-WATs, 0.2 part of Sodium Nitrite; 0.5 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 25 parts in water, 3 parts in sodium hydroxide; Add mixing tank, mixed 1 hour, control extruding puffing front-end temperature is 50 ℃; The stage casing temperature is 130 ℃, and the rear temperature is 190 ℃, and the material feeding extrusion machine that mixes above was with screw speed 250 r/min extruding reactions 2 minutes.
(COOH) quality percentage is 0.01% to the product carboxyl that present embodiment obtains, and the quality percentage of sulphur (S) is 0.25%, and the quality percentage of nitrogen (N) is 0.026%, and viscosity is 22mPas (6%, 95 ℃), the composite modified starch product of cold water solubles.This product is 0.8kg/t as the rhombohedral iron ore suppressor factor at addition; It to iron grade behind heavy-magnetic separation 43.5% rhombohedral iron ore; After the lime activation, adopt oleic acid lipid acid as collecting agent to the rhombohedral iron ore reverse flotation of opening a way, obtain the iron grade and be 67.8%, the recovery is 83.5% iron ore concentrate.
Embodiment 2
100 parts of extracting corn starch, 3.0 parts of Youxiaolin, 5.5 parts of S-WATs; 1.0 parts of Sodium Nitrites, 0.8 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 25 parts in water; 6 parts in Pottasium Hydroxide mixed 2 hours in mixing tank, and control extruding puffing front-end temperature is 70 ℃; The stage casing temperature is 155 ℃, and the rear temperature is 220 ℃, and the material feeding extrusion machine that mixes above was with screw speed 125 r/min extruding reactions 5 minutes.
(COOH) quality percentage is 0.024% to the product carboxyl that present embodiment obtains, and the quality percentage of sulphur (S) is 0.91%, and the quality percentage of nitrogen (N) is 0.052%., viscosity is 13mPas (6%, 95 ℃), the composite modified starch product of cold water solubles.This product is 0.8kg/t as the rhombohedral iron ore suppressor factor at addition; It to iron grade behind heavy-magnetic separation 43.5% rhombohedral iron ore; After the lime activation, adopt oleic acid lipid acid as collecting agent to the rhombohedral iron ore reverse flotation of opening a way, obtain the iron grade>68.6%, the recovery 86.5% iron ore concentrate.
Embodiment 3
Get 100 parts of tapioca(flour)s, 10 parts of Youxiaolin, 7.0 parts of S-WATs, 1.2 parts of Sodium Nitrites; 3.5 parts of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salts, 40 parts in water, 3.5 parts in sodium hydroxide; Add mixing tank, mixed 3 hours, control extruding puffing front-end temperature is 80 ℃; The stage casing temperature is 170 ℃, and the rear temperature is 240 ℃, and the material feeding extrusion machine that mixes above was with screw speed 50 r/min extruding reactions 10 minutes.
(COOH) quality percentage is 0.17% to the product carboxyl that present embodiment obtains, and the quality percentage of sulphur (S) is 1.35%, and the quality percentage of nitrogen (N) is 0.175%, and viscosity is 8 mPas (6%, 95 ℃), the composite modified starch product of cold water solubles.This product is 0.8kg/t as the rhombohedral iron ore suppressor factor at addition; It to iron grade behind heavy-magnetic separation 43.5% rhombohedral iron ore; After the lime activation, adopt oleic acid lipid acid as collecting agent to the rhombohedral iron ore reverse flotation of opening a way, obtain the iron grade and be 68.3%, the recovery is 85.5% iron ore concentrate.
Claims (9)
1. hematite reverse flotation suppressor factor composite modified starch, it is characterized in that: by starch is raw material, Youxiaolin is an oxygenant; S-WAT and Sodium Nitrite are esterifying agent, and 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt is a cationic reagent, and caustic alkali is that catalyzer and water are processed; Its proportioning is counted by weight: 100 parts of raw starch, 0.5 ~ 10 part of Youxiaolin, 1.2 ~ 7.0 parts of S-WATs; 0.2 ~ 1.2 part of Sodium Nitrite; 0.5 ~ 3.5 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 3.0 ~ 7.0 parts in caustic alkali, 25 ~ 40 parts in water.
2. hematite reverse flotation suppressor factor composite modified starch according to claim 1 is characterized in that: said starch is selected from tapioca(flour) and the W-Gum any one.
3. hematite reverse flotation suppressor factor composite modified starch according to claim 1 is characterized in that: said caustic alkali is selected from sodium hydroxide and the Pottasium Hydroxide any one.
4. hematite reverse flotation suppressor factor composite modified starch according to claim 1 is characterized in that: product comprises carboxylate radical, azochlorosulfonate acid anion and quaternary ammonium group positively charged ion.
5. hematite reverse flotation suppressor factor composite modified starch according to claim 1 is characterized in that: product-the COOH quality percentage is 0.012% ~ 0.3%, and the quality percentage of S is 0.18% ~ 2.0%, and the quality percentage of N is 0.02% ~ 0.25%.
6. hematite reverse flotation suppressor factor composite modified starch according to claim 1 is characterized in that: the product cold water solubles is 6% in mass percent, and viscosity is 5 ~ 35mPas under 95 ℃ of conditions of temperature.
7. the preparation method of a hematite reverse flotation suppressor factor composite modified starch as claimed in claim 1 is characterized in that comprising the steps:
(1) mixing of materials: with 100 parts of starch, 0.5 ~ 10 part of Youxiaolin, 1.2 ~ 7.0 parts of S-WATs; 0.2 ~ 1.2 part of Sodium Nitrite; 0.5 ~ 3.5 part of 3-chloro-2-Hydroxyproyl Trimethyl quaternary ammonium salt, 3.0 ~ 7.0 parts in caustic alkali and 25 ~ 40 parts of adding mixing tanks of water mixed 1 ~ 3 hour;
(2) extruding reaction: adopt twin-screw extruder that mixed material was carried out extruding reaction 2 ~ 10 minutes, reaction comprises oxidation, esterification and etherification reaction;
(3) aftertreatment: reacted product is cooled to room temperature, pulverizes,, promptly obtain product through 100 mesh sieves.
8. the preparation method of hematite reverse flotation suppressor factor composite modified starch according to claim 7 is characterized in that: the rotating speed that said mixing tank stirs is 50 ~ 200 r/min.
9. the preparation method of hematite reverse flotation suppressor factor composite modified starch according to claim 7; The working parameter that it is characterized in that said twin-screw extruder is: screw slenderness ratio 25, the compression ratio 3.0 of twin screw, screw speed 50 ~ 250 r/min; Front-end temperature is 50 ~ 80 ℃; The stage casing temperature is 130 ~ 170 ℃, and the rear temperature is 190 ~ 240 ℃, extrusion positive pressure 2.0 ~ 3.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362410.7A CN102443071B (en) | 2011-11-16 | 2011-11-16 | Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362410.7A CN102443071B (en) | 2011-11-16 | 2011-11-16 | Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102443071A true CN102443071A (en) | 2012-05-09 |
| CN102443071B CN102443071B (en) | 2015-10-14 |
Family
ID=46006041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362410.7A Expired - Fee Related CN102443071B (en) | 2011-11-16 | 2011-11-16 | Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102443071B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724440A (en) * | 2013-12-18 | 2014-04-16 | 广西农垦明阳生化集团股份有限公司 | Extrusion modified starch filtrate reducer and preparation method thereof |
| CN104069952A (en) * | 2014-06-06 | 2014-10-01 | 武汉理工大学 | Inhibitor for gangue mineral in graphite ore and application thereof |
| CN104226488A (en) * | 2014-07-29 | 2014-12-24 | 唐山学院 | Preparation method of micro-fine particle hematite reverse flotation depressing agent |
| CN104437889A (en) * | 2014-12-09 | 2015-03-25 | 鞍钢集团矿业公司 | Hematite anti-floatation depressor |
| CN105013620A (en) * | 2015-06-25 | 2015-11-04 | 西南科技大学 | Efficient combined collector for spodumene and preparation method and application thereof |
| US9586212B2 (en) | 2012-09-04 | 2017-03-07 | Vale S.A. | Depressor in iron ore flotation comprising sugar cane bagasse, use of sugar cane bagasse as depressor in iron ore flotation and process of preparing depressor comprising sugar cane bagasse |
| WO2017062200A1 (en) * | 2015-10-08 | 2017-04-13 | Kemira Oyj | Moderately oxidized polysaccharide depressants for use in iron ore flotation processes |
| CN106824550A (en) * | 2017-03-22 | 2017-06-13 | 辽宁宝翔科技有限公司 | A kind of iron mineral inhibitor and preparation method thereof |
| CN106824544A (en) * | 2017-01-16 | 2017-06-13 | 北京矿冶研究总院 | Hematite reverse flotation inhibitor and use method thereof |
| CN107638949A (en) * | 2017-09-29 | 2018-01-30 | 江西理工大学 | Application of the cation etherification starch in Scheelite Flotation |
| CN114011587A (en) * | 2021-11-03 | 2022-02-08 | 武汉科技大学 | Preparation method of ultrasonic modified starch beneficiation reagent and iron oxide ore reverse flotation method |
| CN114011582A (en) * | 2021-11-09 | 2022-02-08 | 昆明理工大学 | Flotation method for improving beneficiation index of gold-bearing copper sulfide ore |
| CN114213245A (en) * | 2021-12-29 | 2022-03-22 | 佛山市正典生物技术有限公司 | Method for reducing esterification reaction rate and negative catalyst thereof |
| CN114891128A (en) * | 2022-03-18 | 2022-08-12 | 上海逢石科技有限公司 | Preparation and use method of modified starch inhibitor for hematite reverse flotation |
| WO2023138261A1 (en) * | 2022-01-24 | 2023-07-27 | 宜昌邦普循环科技有限公司 | Compound inhibitor, preparation method therefor, and use thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049612A (en) * | 1988-05-02 | 1991-09-17 | Falconbridge Limited | Depressant for flotation separation of polymetallic sulphidic ores |
| CN1644521A (en) * | 2004-12-30 | 2005-07-27 | 王元英 | Production of red iron stone built agent |
| CN1931437A (en) * | 2006-10-12 | 2007-03-21 | 武汉科技大学 | Ore dressing process of oolitic high phosphorus hematite |
| CN101759880A (en) * | 2010-01-13 | 2010-06-30 | 广东省造纸研究所 | Method for preparing amphiprotic starch solution for papermaking |
| CN101875701A (en) * | 2010-02-03 | 2010-11-03 | 内蒙古奈伦农业科技股份有限公司 | Preparation method of oxidative cationic modified starch slurry |
-
2011
- 2011-11-16 CN CN201110362410.7A patent/CN102443071B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049612A (en) * | 1988-05-02 | 1991-09-17 | Falconbridge Limited | Depressant for flotation separation of polymetallic sulphidic ores |
| CN1644521A (en) * | 2004-12-30 | 2005-07-27 | 王元英 | Production of red iron stone built agent |
| CN1931437A (en) * | 2006-10-12 | 2007-03-21 | 武汉科技大学 | Ore dressing process of oolitic high phosphorus hematite |
| CN101759880A (en) * | 2010-01-13 | 2010-06-30 | 广东省造纸研究所 | Method for preparing amphiprotic starch solution for papermaking |
| CN101875701A (en) * | 2010-02-03 | 2010-11-03 | 内蒙古奈伦农业科技股份有限公司 | Preparation method of oxidative cationic modified starch slurry |
Non-Patent Citations (1)
| Title |
|---|
| 张友全，等: "两性变性淀粉的制备及应用", 《郑州工程学院学报》 * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9586212B2 (en) | 2012-09-04 | 2017-03-07 | Vale S.A. | Depressor in iron ore flotation comprising sugar cane bagasse, use of sugar cane bagasse as depressor in iron ore flotation and process of preparing depressor comprising sugar cane bagasse |
| CN103724440A (en) * | 2013-12-18 | 2014-04-16 | 广西农垦明阳生化集团股份有限公司 | Extrusion modified starch filtrate reducer and preparation method thereof |
| CN104069952B (en) * | 2014-06-06 | 2016-08-31 | 武汉理工大学 | The inhibitor of gangue mineral and application thereof in a kind of graphite ore |
| CN104069952A (en) * | 2014-06-06 | 2014-10-01 | 武汉理工大学 | Inhibitor for gangue mineral in graphite ore and application thereof |
| CN104226488A (en) * | 2014-07-29 | 2014-12-24 | 唐山学院 | Preparation method of micro-fine particle hematite reverse flotation depressing agent |
| CN104226488B (en) * | 2014-07-29 | 2016-08-03 | 唐山学院 | The preparation method of microfine hematite reverse flotation inhibitor |
| CN104437889A (en) * | 2014-12-09 | 2015-03-25 | 鞍钢集团矿业公司 | Hematite anti-floatation depressor |
| CN105013620A (en) * | 2015-06-25 | 2015-11-04 | 西南科技大学 | Efficient combined collector for spodumene and preparation method and application thereof |
| CN105013620B (en) * | 2015-06-25 | 2017-07-07 | 西南科技大学 | A kind of spodumene efficient combination collecting agent and its preparation method and application |
| WO2017062200A1 (en) * | 2015-10-08 | 2017-04-13 | Kemira Oyj | Moderately oxidized polysaccharide depressants for use in iron ore flotation processes |
| US10589293B2 (en) | 2015-10-08 | 2020-03-17 | Kemira Oyj | Moderately oxidized polysaccharide depressants for use in iron ore flotation processes |
| CN108602071A (en) * | 2015-10-08 | 2018-09-28 | 凯米罗总公司 | The polysaccharide inhibitor of moderate oxidation for iron ore flotation process |
| CN106824544A (en) * | 2017-01-16 | 2017-06-13 | 北京矿冶研究总院 | Hematite reverse flotation inhibitor and use method thereof |
| CN106824544B (en) * | 2017-01-16 | 2019-02-05 | 北京矿冶研究总院 | Hematite reverse flotation inhibitor and use method thereof |
| CN106824550A (en) * | 2017-03-22 | 2017-06-13 | 辽宁宝翔科技有限公司 | A kind of iron mineral inhibitor and preparation method thereof |
| CN107638949A (en) * | 2017-09-29 | 2018-01-30 | 江西理工大学 | Application of the cation etherification starch in Scheelite Flotation |
| CN107638949B (en) * | 2017-09-29 | 2019-07-23 | 江西理工大学 | Application of the cationic etherification starch in Scheelite Flotation |
| CN114011587A (en) * | 2021-11-03 | 2022-02-08 | 武汉科技大学 | Preparation method of ultrasonic modified starch beneficiation reagent and iron oxide ore reverse flotation method |
| CN114011587B (en) * | 2021-11-03 | 2024-02-23 | 武汉科技大学 | Preparation method of ultrasonic modified starch beneficiation reagent and iron oxide ore reverse flotation method |
| CN114011582A (en) * | 2021-11-09 | 2022-02-08 | 昆明理工大学 | Flotation method for improving beneficiation index of gold-bearing copper sulfide ore |
| CN114213245A (en) * | 2021-12-29 | 2022-03-22 | 佛山市正典生物技术有限公司 | Method for reducing esterification reaction rate and negative catalyst thereof |
| CN114213245B (en) * | 2021-12-29 | 2024-02-23 | 佛山市正典生物技术有限公司 | Method for reducing esterification reaction rate and negative catalyst thereof |
| WO2023138261A1 (en) * | 2022-01-24 | 2023-07-27 | 宜昌邦普循环科技有限公司 | Compound inhibitor, preparation method therefor, and use thereof |
| CN114891128A (en) * | 2022-03-18 | 2022-08-12 | 上海逢石科技有限公司 | Preparation and use method of modified starch inhibitor for hematite reverse flotation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102443071B (en) | 2015-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102443071A (en) | Composite modified starch as hematite reverse flotation inhibitor and preparation method thereof | |
| CN100522374C (en) | Mineral dressing method of mid-low grade collophane | |
| CN101844110B (en) | Sulfide ore flotation layered silicate mineral inhibitor | |
| CN100392124C (en) | Method of retrieving magnesium from high magnesium phosphorus ore | |
| CN104907183B (en) | A kind of silico-calcium matter low grade collophanite direct reverse flotation technique | |
| CN110369152B (en) | Flotation process for micro-fine particle phosphorite | |
| CN101856634A (en) | Iron-increasing and silicon-reduction mineral separation method for iron ores | |
| CN104259012A (en) | Composite inhibitor and direct flotation method for low-grade refractory phosphate | |
| CN106423584B (en) | A kind of collophane direct reverse flotation technique that floatation process water recycles respectively | |
| CN103691567A (en) | Flotation separation method of fluorite and dolomite in acidic conditions | |
| CN104525384B (en) | Preparation method of inhibitor of limonite | |
| CN104174504A (en) | Direct-flotation branching floatation method of low-and-medium-grade mixed type refractory collophane | |
| CN109622232B (en) | Method for flotation decalcification of magnesite by temperature control | |
| CN107309075A (en) | Collophane beneficiation method | |
| CN112221718B (en) | Collecting agent applied to normal-temperature alkali-free flotation of collophanite and preparation method thereof | |
| CN102671753A (en) | Dosing and size mixing method for ore dressing of high-carbonate and low-grade phosphorite | |
| CN111036415B (en) | Application of inhibitor HEDP in magnesite direct flotation decalcification | |
| CN102965079A (en) | Phosphate rock grinding aid and preparation method thereof | |
| CN110653043B (en) | Ore grinding method considering ores with different hardness | |
| CN107159468A (en) | A kind of low grade collophanite reverse floatation process | |
| CN105013617A (en) | Collophanite dressing technology | |
| CN113351357A (en) | Recovery process of fluorite secondary fine powder | |
| CN103846130B (en) | A kind of milling method | |
| CN109954588B (en) | Sesquioxide inhibitor and preparation method and application thereof | |
| CN102311115A (en) | Preparation method of high-purity green silicon carbide micropowder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20161116 |