CN1163305C - Bauxite dressing method - Google Patents
Bauxite dressing method Download PDFInfo
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- CN1163305C CN1163305C CNB00113440XA CN00113440A CN1163305C CN 1163305 C CN1163305 C CN 1163305C CN B00113440X A CNB00113440X A CN B00113440XA CN 00113440 A CN00113440 A CN 00113440A CN 1163305 C CN1163305 C CN 1163305C
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- bauxite
- collector
- salt
- gram
- diaspore
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Abstract
The present invention relates to a bauxite dressing process which comprises the following steps: carrying out grinding and direct flotation for ores; adding a combined modifying agent and a composite collecting agent to carry out the desiliconization of the direct flotation of bauxite when the pH value of ore slurry is within 7 to 12 to produce direct flotation ore concentrate using diaspore and a rich coenobium thereof as main components. When the present invention is used for carrying out the desiliconization of the direct flotation of the bauxite, collecting ability for a coarse particle diaspore rich coenobium is strong. Under different water media, the desiliconizing effect for raw materials with different alumina silica ratios is good. The coarse particle diaspore rich coenobium can be effectively recycled. The particle size content of 0.074mm in floatation concentrate is improved by 2% to 23%. For a raw material of which the alumina silica ratio is larger than 4, the recycling rate of Al2O3 reaches 85.32% to 92.13%. An alumina silica ratio is from 10.52 to 14.18. Compared with a raw ore, the alumina silica ratio is improved by 6.30 to 9.20.
Description
[technical field] the present invention relates to be used for the beneficiating method of diaspore type bauxite of alumina producing.
[background technology] China bauxite mainly is diaspore type bauxite, has the characteristics of high alumina, high silicon, low alumina silica ratio, and most of alumina silica ratios are 4～8.This type of ore adopts lime sinter process and Bayer-sintering combination method to produce aluminium oxide mostly.There is the energy consumption height in these two kinds of methods, and technological process is long, the shortcoming that capital expenditure is big.And with simple, the good in economic efficiency alumina producing Bayer process of flow process, the alumina silica ratio (A/S) that requires raw material is greater than 10.In order to remove the siliceous gangue mineral in the bauxite, improve the alumina silica ratio of raw material, make it to be applicable to alumina producing Bayer process, from the seventies, once extensively carried out the research that removes silicon mineral with beneficiation method both at home and abroad, wherein the flotation desilication technology is a kind of effective ways.
At present, in the diaspore type bauxite floatation process, mog is-0.074mm is greater than 90%, with sodium carbonate, waterglass, calgon, vulcanized sodium etc. as adjusting agent, oxidation stone soda soap, tall oil, oleic acid etc. carry out the bauxite flotation desiliconization as collecting agent.Sodium carbonate amount 2000～5000 gram/ton raw ores, calgon consumption are 150～500 gram/ton raw ores, and sodium carbonate and calgon amount ratio are 7～30: 1, and dispersant dosage is big.Collector dosage is 1700～3200 gram/ton raw ores.The subject matter of above-mentioned technology is: collecting agent consumption height, and low to the coarse grain diaspore rich intergrowth rate of recovery, Ca in the aqueous medium
2+, Mg
2+1Content is big to flotation desilication influence, causes wear-resisting thin (mog for-0.074mm content greater than 90%), and granularity of concentrate is thin, aluminium silicon separation difficulty, is difficult to guarantee simultaneously the quality and the rate of recovery of concentrate, thereby is difficult to satisfy production requirement technically and economically.
[summary of the invention] in order to overcome above-mentioned shortcoming, and the present invention is by adopting combined modifier and composite collector, provide a kind of can be in various water quality effectively recovery-diaspore and rich intergrowth, the ore concentration of bauxite method that desiliconization effect is good.
The present invention includes processes such as ore ore grinding, direct flotation, in pH values of pulp=7～12 scopes, add combined modifier and composite collector and carry out bauxite direct-flotation desiliconisation, output is based on the direct flotation concentrate of diaspore and rich intergrowth thereof.
(1) combined modifier is: high consumption sodium carbonate+low consumption dispersant, dispersant is a kind of in phosphate, Quadrafos, waterglass, lignin sulfonic acid and salt, humic acid and salt, carboxymethyl cellulose, the carboxyethyl cellulose or two kinds, the sodium carbonate amount scope is 3000～6000 gram/ton raw ores, dispersant dosage is 10～200 gram/ton raw ores, sodium carbonate is 15～600: 1 with the ratio of dispersant dosage, and dosing is in effective content.
Adjust under agent consumption, the proportioning in combinations thereof, can guarantee the slurry pH of direct-flotation desiliconisation, effectively disperse sludge, overcome the interference that fine-grained gangue separates selectivity aluminium silicon, selectivity suppresses siliceous gangue, helps coarse grain diaspore and rich intergrowth thereof come-up.
(2) composite collector is: chelate collector+alkyl oxyacid and salt thereof, chelate collector are C
6～C
18Hydroximic acid and salt or its derivative, oxine etc. in a kind of or two kinds, the alkyl oxyacid is aliphatic acid and salt or its derivative, hydrocarbyl sulfonate, copperon, the chelate collector amount ranges is 10～200 gram/ton raw ores, alkyl oxyacid and salt amount ranges are 1000～2000 gram/ton raw ores, the usage ratio of chelate collector and alkyl oxyacid and salt is 1: 200～5, and dosing is in effective content.
The present invention adopts composite collector can strengthen the effect of collecting agent and diaspore and rich intergrowth thereof, to coarse grain diaspore and the effective collecting of rich intergrowth thereof, to the Ca in the water
2+, Mg
2+Ion is insensitive, and collector dosage is low, can obtain high aluminium silicon ratio, high Al
2O
3The bauxite forward flotation concentrate product of the rate of recovery, coarse size.
Characteristics of the present invention: adopt the invention process bauxite direct-flotation desiliconisation, strong to coarse grain diaspore rich intergrowth collecting ability, at different aqueous medium (Ca
2+, Mg
2+Total content is under 40～180mg/L), and is good to the desiliconization effect of the raw material of different alumina silica ratios, can effectively reclaim coarse grain diaspore rich intergrowth, in the flotation concentrate+and the 0.074mm grain size content improves 2%～23%, to containing Al
2O
357%～67%, SiO
28～19%, alumina silica ratio is 3～9 diaspore type bauxite raw ore, produces the direct flotation concentrate of alumina silica ratio 10～20, and this concentrate can be directly used in alumina producing Bayer process, remarkable in economical benefits.
[specific embodiment]
The invention will be further described below in conjunction with embodiment.
Following examples all are used for bauxite Milling to-0.074mm55%～89%, one roughing, and once purging selection, repeatedly selected, chats returns in proper order or concentrates and return, and produces the direct flotation flow process of concentrate, mine tailing.
1, combined modifier
Raw material: Henan ore deposit point sample ore, its main chemical constituent percentage by weight and alumina silica ratio are as follows:
| Al 2O 3(％) | SiO 2(％) | Fe 2O 3(％) | Alumina silica ratio (A/S) |
| 65.12 | 11.14 | 6.02 | 5.85 |
Water quality: Ca
2+, Mg
2+Total content is 140mg/L
Adopt composite collector: hydroximic acid sodium 100 gram/ton raw ores, oleic acid 1100 gram/ton raw ores, under different combined modifier consumptions and ratio, closed circuit flotation results is as follows:
| The embodiment numbering | Sodium carbonate (gram/ton) | Adjust agent title and consumption (gram/ton) | Amount ratio | Concentrate yield (%) | Concentrate alumina silica ratio (A/S) | Concentrate Al 2O 3The rate of recovery (%) |
| 1 | 3000 | Calgon 70 | 43 | 83.12 | 11.15 | 90.32 |
| 2 | 4200 | Sodium humate 45 | 93 | 83.08 | 11.28 | 90.35 |
| 3 | 4100 | Sodium lignosulfonate 65 | 63 | 84.57 | 11.03 | 91.20 |
| 4 | 5000 | Polyphosphate+waterglass 160 | 33 | 82.17 | 11.56 | 89.48 |
| 5 | 6000 | Carboxymethyl cellulose 30 | 200 | 84.45 | 10.89 | 91.37 |
2, composite collector
Raw material: with embodiment 1; Water quality: with embodiment 1;
Adopt combined modifier: sodium carbonate 4000 gram/ton raw ore+calgons 80 gram/ton raw ores, the closed circuit flotation results under different composite collecting agent condition is as follows:
| The embodiment numbering | The collecting agent title | Consumption (gram/ton) | Concentrate yield (%) | Concentrate alumina silica ratio (A/S) | The concentrate rate of recovery (%) | In the concentrate+0.074MM (%) |
| 6 | Oleic acid | 2000 | 74.24 | 11.32 | 77.31 | 15.10 |
| 7 | Hydroximic acid | 100 | 82.12 | 11.89 | 89.87 | 31.85 |
| Oleic acid | 1200 | |||||
| 8 | Oxine | 150 | 83.21 | 11.23 | 90.36 | 31.70 |
| Neopelex | 500 | |||||
| Oleic acid | 700 |
3, to the adaptability of water quality
Main chemical constituent percentage by weight and the alumina silica ratio of raw material is as follows:
| Al 2O 3(％) | SiO 2(％) | Fe 2O 3(％) | Alumina silica ratio |
| 64.69 | 11.39 | 4.93 | 5.68 |
Combined modifier: sodium carbonate 4200 gram/ton raw ores, calgon 60 gram/ton raw ores
Composite collector: hydroximic acid 200 gram/ton raw ores, oleic acid 1100 gram/ton raw ores
Closed circuit flotation results following (in the concentrate+0.074mm is 25～33%):
| The embodiment numbering | Ca 2+、Mg 2+ | Concentrate yield (%) | Concentrate alumina silica ratio (A/S) | Concentrate Al 2O 3The rate of recovery (%) |
| 9 | 40 | 80.54 | 14.18 | 91.87 |
| 10 | 100 | 81.40 | 11.73 | 90.58 |
| 11 | 140 | 79.24 | 11.86 | 88.79 |
| 12 | 180 | 79.26 | 11.35 | 87.36 |
4, to the adaptability of raw ore
The floating agent system is with embodiment 3; Ca in the flotation aqueous medium
2+, Mg
2+Total content is 110mg/L.Main chemical constituent percentage by weight of raw material and alumina silica ratio are as follows:
| The raw material numbering | The main chemical constituent of raw material (%) | |||
| Al 2O 3(％) | SiO 2(％) | Fe 2O 3(％) | Alumina silica ratio (A/S) | |
| 1 | 59.20 | 18.77 | 2.45 | 3.15 |
| 2 | 57.53 | 13.63 | 7.41 | 4.22 |
| 3 | 63.73 | 12.70 | 2.52 | 5.02 |
| 4 | 65.67 | 10.37 | 4.28 | 6.33 |
| 5 | 60.12 | 13.65 | 6.73 | 4.40 |
| 6 | 63.88 | 14.01 | 5.68 | 4.56 |
Closed circuit flotation results following (in the concentrate+0.074mm is 18～33%):
| Example number | The raw material numbering | Concentrate yield (%) | Concentrate alumina silica ratio (A/S) | Concentrate Al 2O 3The rate of recovery (%) |
| 14 | 1 | 63.41 | 9.87 | 75.28 |
| 15 | 2 | 71.72 | 10.52 | 85.32 |
| 16 | 3 | 78.36 | 11.03 | 86.58 |
| 17 | 4 | 85.25 | 12.10 | 92.13 |
| 18 | 5 | 70.86 | 12.65 | 84.27 |
| 19 | 6 | 76.93 | 13.76 | 87.88 |
Claims (2)
1. the beneficiation method of a bauxite comprises ore is carried out ore grinding, direct flotation, it is characterized in that: add combined modifier and composite collector and carry out bauxite direct-flotation desiliconisation, output is based on the direct flotation concentrate of diaspore and rich intergrowth thereof;
(1) combined modifier is: high consumption sodium carbonate+low consumption dispersant, dispersant is wherein a kind of of phosphate, Quadrafos, waterglass, lignin sulfonic acid and salt, humic acid and salt, carboxymethyl cellulose, carboxyethyl cellulose or two kinds, the sodium carbonate amount scope is 3000～6000 gram/ton raw ores, dispersant dosage is 10～200 gram/ton raw ores, sodium carbonate is 15～600: 1 with the ratio of dispersant dosage, and dosing is in effective content;
(2) composite collector is: chelate collector+alkyl oxyacid and salt thereof, chelate collector are C
6～C
18Hydroximic acid and in salt or its derivative, the oxine one or both, the alkyl oxyacid is aliphatic acid and derivative thereof, hydrocarbyl sulfonate, copperon, the chelate collector amount ranges is 10～200 gram/ton raw ores, alkyl oxyacid and salt amount ranges are 1000～2000 gram/ton raw ores, the usage ratio of chelate collector and alkyl oxyacid and salt is 1: 200～5, and dosing is in effective content.
2. method according to claim 1 is characterized in that: be applicable to contain Al
2O
357%～67%, SiO
28～19%, alumina silica ratio is 3～9 diaspore type bauxite raw ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00113440XA CN1163305C (en) | 2000-05-19 | 2000-05-19 | Bauxite dressing method |
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|---|---|---|---|
| CNB00113440XA CN1163305C (en) | 2000-05-19 | 2000-05-19 | Bauxite dressing method |
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| CN1324696A CN1324696A (en) | 2001-12-05 |
| CN1163305C true CN1163305C (en) | 2004-08-25 |
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|---|---|---|---|
| CNB00113440XA Expired - Fee Related CN1163305C (en) | 2000-05-19 | 2000-05-19 | Bauxite dressing method |
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382894C (en) * | 2005-11-01 | 2008-04-23 | 中南大学 | Gradient floatation method for bauxite |
| CN100348331C (en) * | 2005-11-28 | 2007-11-14 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| CN100348330C (en) * | 2005-12-02 | 2007-11-14 | 中南大学 | Bauxite combined flotation desilicification method |
| CN100398217C (en) * | 2006-07-06 | 2008-07-02 | 中国铝业股份有限公司 | Flotation desilication method for bauxite |
| CN101579657B (en) * | 2009-06-09 | 2012-09-26 | 山西迪沃思工业有限公司 | Floatation grading production technology of high-quality refractory bauxite |
| CN101816980B (en) * | 2010-04-30 | 2012-08-22 | 广州有色金属研究院 | Method for preparing fatty hydroximic acid collecting agent and application |
| CN101913614A (en) * | 2010-07-12 | 2010-12-15 | 河南省岩石矿物测试中心 | Method for removing silicon in bauxite by using microorganisms |
| CN102476074A (en) * | 2010-11-25 | 2012-05-30 | 中国科学院过程工程研究所 | Collector for direct flotation of bauxite |
| CN102284352B (en) * | 2011-08-08 | 2013-05-08 | 中南大学 | Efficient ore dressing and impurity removal process for potassium and sodium feldspar ores which are complex and difficult to process and combined medicament thereof |
| CN103170411B (en) * | 2011-12-21 | 2014-10-29 | 沈阳铝镁设计研究院有限公司 | Preparation method of collecting agent applied to floatation of coarse particles of bauxite |
| CN103736582A (en) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | Method for sorting monohydrallite |
| CN104174484A (en) * | 2014-07-14 | 2014-12-03 | 高旭 | Desiliconization processing method for bauxite flotation tailings |
| CN105750060B (en) * | 2014-12-16 | 2018-06-08 | 沈阳铝镁设计研究院有限公司 | A kind of bauxite dry and wet mixing grinds new process |
| CN105562212B (en) * | 2015-03-18 | 2017-10-31 | 遵义能矿投资股份有限公司 | A kind of sulfur bauxite flotation desilication sulfur method |
| CN105344463B (en) * | 2015-11-25 | 2018-07-13 | 昆明冶金研究院 | One kind selecting method for distinguishing for middle low alumina-silicon ratio alumyte |
| CN105689150B (en) * | 2016-04-15 | 2018-07-06 | 中南大学 | A kind of lead-zinc oxide ore flotation inhibitor and its application |
| CN105880034B (en) * | 2016-04-22 | 2019-02-05 | 北京矿冶研究总院 | Ilmenite chelating collector |
| CN108435436A (en) * | 2018-05-07 | 2018-08-24 | 郑州东旺矿业有限公司 | A kind of bauxite forward flotation collecting agent |
| CN110918262A (en) * | 2019-11-22 | 2020-03-27 | 中化地质矿山总局地质研究院 | Collecting agent and preparation method and application thereof |
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2000
- 2000-05-19 CN CNB00113440XA patent/CN1163305C/en not_active Expired - Fee Related
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