CN1080569A - Beneficiation method for improving bauxite grade - Google Patents
Beneficiation method for improving bauxite grade Download PDFInfo
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- CN1080569A CN1080569A CN 92105235 CN92105235A CN1080569A CN 1080569 A CN1080569 A CN 1080569A CN 92105235 CN92105235 CN 92105235 CN 92105235 A CN92105235 A CN 92105235A CN 1080569 A CN1080569 A CN 1080569A
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Abstract
The invention relates to a mineral processing method for improving the aluminum-containing grade of bauxite, which is characterized in that a sodium carbonate regulator is added in the ball milling process, sodium hexametaphosphate is used as a dispersing agent, and sebacic acid is used as a collecting agent for carrying out a flotation process.
Description
The present invention relates to the processing technology of bauxite, is a kind of beneficiation method that sorts bauxite, is used to improve the grade of bauxite aluminium.
Bauxite has two kinds of main applications industrial, and the one, as refining Al
2O
3Raw material, require Al
2O
3/ SiO
2Greater than 3.5.The 2nd, the raw material as high alumina refractories requires Al
2O
3Content is greater than 69%, and to TiO
2, Fe
2O
3Content Deng impurity has strict requirement.Domestic and international most of bauxite all directly utilizes without ore dressing processing at present.Bauxite for as used for refractory material has only Al
2O
3Content could directly utilize greater than 69% ore, and Al
2O
3Content often abandons as barren rock less than 69% ore, and the back production utilization rate of general ore has only 40～50%, has caused the significant wastage of resource.Along with the continuous minimizing of bauxite resource, to grade (Al
2O
3Content＜69%) ore dressing of bauxite is handled and is seemed more and more important.The ore dressing processing of bauxite is handled and can not only be made low-grade bauxite obtain utilizing, and can also play classification, and homogenizing reduces the effect of impurity, improves the fire resistance of refractory material.
The present invention is intended to separate effectively diaspore and kaolinite and siliceous gangue.From low-grade bauxite, isolate high-grade diaspore concentrate, satisfy the demand of producing high alumina refractories.
Fig. 1 is a floatation process open-circuit test flow chart of the present invention.
Technology of the present invention adds ore in the ball mill as shown in Figure 1, joins a certain amount of water, and adding sodium carbonate (by ore deposit per ton 3000～4000 grams), making pH value is 8～10), make the ore fineness be milled to-0.074 millimeter and account for 84～97%), pulp density is 25～30%. In ore pulp, add calgon (by ore deposit per ton 200～400 grams) then, stir, then ore pulp is fed in the flotation cell, adding certain herbaceous plants with big flowers resin acid or other fatty acids are made collecting agent (by ore deposit per ton 1000～2000 grams) and are roughly selected operation, must roughly select concentrate and tailings, to roughly select again concentrate and deliver in the cleaner cell, and add sodium carbonate or other fatty acids in the groove and make collecting agent (ore deposit per ton 150～250 grams), calgon (ore deposit per ton 30～40 grams) and certain herbaceous plants with big flowers resin acid (ore deposit 350～500 per ton restrains); Carry out selected operation, obtain the aluminium concentrate and be product of the present invention, the mine tailing in the cleaner cell is merged into true tailings with the mine tailing of roughly selecting acquisition.
Method for floating of the present invention be characterised in that comprise ore grinding, disperse to size mixing, roughly select, the technological process and the condition of selected four operations, essential implementation is as follows:
1. ore grinding: because diaspore and kaolinite disseminated grain size are thinner, raw ore need be carried out fine grinding, just can make the abundant monomer dissociation of mineral.Mog accounts for 84～97% for-0.074 millimeter.Add sodium carbonate or NaOH (but also both combinations) in the grinding process, make ore pulp PH maintain 8～10, the best is 9.5.Sodium carbonate also plays the effect that disperses ore pulp except that playing the PH regulating action.
2. disperse to size mixing; Ore pulp behind the mill is fed in the tank diameter, in tank diameter, add the calgon of 200～400 gram/tons then.Stir more than 3 minutes, ore pulp is fully disperseed, the optimum amount of calgon is 200 gram/tons.
3. roughly select; Adopting the certain herbaceous plants with big flowers resin acid is the collecting agent of diaspore, and this collecting agent main component is: oleic acid 40～50%, linoleic acid 20～25%.It is good that this medicament has selectivity, the characteristics that the medicament price is low.The consumption of certain herbaceous plants with big flowers resin acid is 1000～2000 gram/tons, and optimum amount is 1800 gram/tons.
4. selected; To roughly select concentrate and carry out selected operation, and add the certain herbaceous plants with big flowers resin acid, consumption is ore deposit per ton 350～500 grams, adds sodium carbonate, and consumption is ore deposit per ton 150～250 grams, adds calgon, and consumption is ore deposit per ton 30～40 grams, carries out flotation.
Embodiment 1:
Yangquan bauxite ore Al
2O
3Content is about 63.8%, and essential mineral is diaspore, kaolinite.At the laboratory small grinder, raw ore is milled to-0.074 millimeter 94%, the sodium carbonate that in ball mill, adds 3600 gram/tons simultaneously, make ore pulp PH about 9.5, the ore pulp behind the mill is fed in the tank diameter (laboratory tank diameter) add 200 gram/ton calgons then and disperse to size mixing.Then ore pulp is fed in the flotation device (lab flotation machine), the certain herbaceous plants with big flowers resin acid that adds 1880 gram/tons again in machine is roughly selected; The time of roughly selecting is 5 minutes.Product is a rougher tailings in the groove, and foam is a rough concentrate.Rough concentrate is added in another flotation cell, add sodium carbonate 200 gram/tons, calgon 35 gram/tons, certain herbaceous plants with big flowers resin acid 400 gram/tons carry out selected.Selected foam is a final concentrate, and product and rougher tailings are merged into true tailings in the cleaner cell.The index that obtains is as follows:
The final index of table 1 example
| Name of product | Productive rate (%) | Al 2O 3(%) | SiO 2(%) | Fe 2O 3(%) | TiO 2(%) |
| Concentrate | 41.27 | 74.20 | 6.60 | 1.09 | 2.64 |
| Mine tailing | 58.73 | 56.53 | 23.48 | 1.02 | 2.84 |
| Add up to | 100.00 | 63.8 |
The beneficiation method of raising bauxite grade of the present invention, it is simple to have flow process, easy and simple to handle, and low cost and other advantages can be widely used in the processing of bauxite, particularly is applicable to the ore deposit far away processing of the production bauxite raw material that high-quality aluminium matter refractory material is used is provided.
Claims (1)
1, a kind of beneficiation method that improves bauxite grade, its inventive features are to comprise following ore grinding, disperse to size mixing, roughly select, dressing process process and operating condition:
a。Ore grinding: account for 84～97% to-0.074 millimeter with raw ore is levigate, add sodium carbonate or NaOH (but also both combinations) in the grinding process and adjust pulp PH value, make pH value maintain 8～10, best 9.5, pulp density 20～25%;
b。Dispersion is sized mixing: the ore pulp after levigate is added in the tank diameter, add 200～400 gram/ton calgons then in tank diameter, stir more than 3 minutes, ore pulp is fully disperseed, the calgon optimum amount is 200 gram/tons;
c。Roughly select; Make collecting agent with certain herbaceous plants with big flowers resin acid or fatty acid, addition is ore deposit per ton 1000～2000 grams, and optimal addn is 1800 grams, roughly selects operation, and getting froth pulp is the aluminium rough concentrate, and product is a rougher tailings in the groove;
d。Selected: as to make collecting agent with certain herbaceous plants with big flowers resin acid or fatty acid, addition ore deposit per ton is 350～500 grams, best 400 grams adjust agent with sodium carbonate, and addition ore deposit per ton is 150～250 grams, best 200 grams, add calgon ore deposit per ton 30～40 grams, best 35 grams carry out selected operation, getting froth pulp is high-grade aluminium concentrate, and it is true tailings that interior product of groove and rougher tailings close And.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105235 CN1029547C (en) | 1992-06-30 | 1992-06-30 | Beneficiation method for improving bauxite grade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105235 CN1029547C (en) | 1992-06-30 | 1992-06-30 | Beneficiation method for improving bauxite grade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080569A true CN1080569A (en) | 1994-01-12 |
| CN1029547C CN1029547C (en) | 1995-08-23 |
Family
ID=4941247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105235 Expired - Fee Related CN1029547C (en) | 1992-06-30 | 1992-06-30 | Beneficiation method for improving bauxite grade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029547C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074390C (en) * | 1995-10-11 | 2001-11-07 | 郑州轻金属研究院 | Method of sorting the concentrate ore of bauxite from the ore of bauxite containing silicon mineral |
| CN100348330C (en) * | 2005-12-02 | 2007-11-14 | 中南大学 | Bauxite combined flotation desilicification method |
| CN101844112A (en) * | 2010-06-30 | 2010-09-29 | 中南大学 | Application of collecting agent in reverse floatation of bauxite |
| CN101704531B (en) * | 2009-08-25 | 2011-09-28 | 中国地质大学（武汉） | Preparation method of high-purity halloysite |
-
1992
- 1992-06-30 CN CN 92105235 patent/CN1029547C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074390C (en) * | 1995-10-11 | 2001-11-07 | 郑州轻金属研究院 | Method of sorting the concentrate ore of bauxite from the ore of bauxite containing silicon mineral |
| CN100348330C (en) * | 2005-12-02 | 2007-11-14 | 中南大学 | Bauxite combined flotation desilicification method |
| CN101704531B (en) * | 2009-08-25 | 2011-09-28 | 中国地质大学（武汉） | Preparation method of high-purity halloysite |
| CN101844112A (en) * | 2010-06-30 | 2010-09-29 | 中南大学 | Application of collecting agent in reverse floatation of bauxite |
| CN101844112B (en) * | 2010-06-30 | 2013-06-19 | 中南大学 | Application of collecting agent in reverse floatation of bauxite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1029547C (en) | 1995-08-23 |
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