CN101580251A - Method for preparing raw slurry in aluminium oxide manufactured by sintering method - Google Patents
Method for preparing raw slurry in aluminium oxide manufactured by sintering method Download PDFInfo
- Publication number
- CN101580251A CN101580251A CNA2009100860577A CN200910086057A CN101580251A CN 101580251 A CN101580251 A CN 101580251A CN A2009100860577 A CNA2009100860577 A CN A2009100860577A CN 200910086057 A CN200910086057 A CN 200910086057A CN 101580251 A CN101580251 A CN 101580251A
- Authority
- CN
- China
- Prior art keywords
- ore
- aluminium
- aluminium ore
- slurry
- white residue
- 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.)
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Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000002002 slurry Substances 0.000 title claims abstract description 25
- 238000005245 sintering Methods 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 48
- 239000004411 aluminium Substances 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 6
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 description 3
- 238000009770 conventional sintering Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Abstract
The invention provides a method for preparing raw slurry in aluminium oxide manufactured by a sintering method, which controls aluminum/silicon (A/S) in the manufacturing process of the raw slurry in the aluminium oxide manufactured by the sintering method or in partial aluminium oxide manufactured by the sintering method. The invention is characterized in that the preparation process comprises the following steps: the bauxitic ore is divided into high aluminium ore, low aluminium ore and ordinary aluminium ore for storage and use according to the A/S; wherein, the A/S of the high aluminium ore equals to the A/S of the ordinary aluminium ore+(2-5); the A/S of the low aluminium ore equals to the A/S of the ordinary aluminium ore-(2-5); the white residue slurry is stored for use alone; the ordinary aluminium ore is used in the manufacturing process, according to the A/S of discharged raw slurry, the quantity of the milling white residue is adjusted firstly, and then the A/S of the abrasive slurry is adjusted by using the high aluminium ore or the low aluminium ore. In the method, the ore is used by levels according to the A/S, the white residue is stored separately, the measurement is accurate, the aim of stable A/S is realized by mainly adjusting the amount of the white residue, and secondarily using different A/S ores, and the qualification rate of the ore slurry is high.
Description
Technical field
The compound method of a kind of raw slurry in aluminium oxide manufactured by sintering method of the present invention relates to a kind of sintering process or has the compound method that sintering process is partly produced the charge pulp of charge pulp controls aluminum silicon A/S in the aluminum oxide.
Background technology
Produce in the alumina technology in sintering process, need the raw meal preparation slurry for the grog sintering, wherein the A/S of charge pulp is an important indicator, adopts the pre-homogenizing of ore, ore-proportioning method to stablize ore A/S during the conventional sintering method is produced, thereby promotes that charge pulp A/S's is stable.There is following shortcoming in this kind method:
One. the ore composition is subjected to for ore deposit ground, becomes the difference of ore deposit type, and it is bigger fluctuate, depends merely on present ore deposit and the homogenization process of joining and can not accomplish the stable of the complete mixing of ore and composition, and the ore that be mixed, homogenizing is good A/S when grinding slip fluctuates bigger.
Two. think little of desiliconization process and turn one's head the control of white residue amount.Desiliconization process is turned one's head white residue A/S about 2.0, generally itself and the alkali lye that grinds slip is mixed into mill.Because white residue A/S is lower, and fluctuation quantity is bigger, to the obvious effect of the A/S of charge pulp, thereby causes the fluctuation of charge pulp A/S.
The charge pulp A/S fluctuation range that the conventional sintering method grinds out is big, has both made through three times of slurry vessel allotments, and the charge pulp A/S fluctuation range that is sent to chamotte kiln is still at 0.3-0.5, and the qualification rate in this scope is low, less than 60%.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, and a kind of compound method that can effectively control the raw slurry in aluminium oxide manufactured by sintering method of alumina silica ratio A/S is provided.
The objective of the invention is to be achieved through the following technical solutions.
A kind of compound method of raw slurry in aluminium oxide manufactured by sintering method is characterized in that its process for preparation is at first bauxitic ore to be divided into high aluminium ore, low aluminium ore, general aluminium ore three classes by aluminium silicon A/S to deposit use; The aluminium silicon A/S=general aluminium ore aluminium silicon A/S+ (2～5) of high aluminium ore wherein; Low aluminium ore alumina silica ratio A/S=general aluminium ore alumina silica ratio A/S-(2～5); The white residue slurry is deposited use separately; Ordinary production is used general aluminium ore, according to going out to grind charge pulp A/S, at first adjusts and goes into to grind the white residue amount, re-uses the alumina silica ratio A/S that high aluminium ore or low aluminum ore are adjusted abrasive slurries.
The compound method of a kind of raw slurry in aluminium oxide manufactured by sintering method of the present invention, the alumina silica ratio of the general aluminium ore of stating that it is characterized in that is 5.5-7.0.
Method of the present invention is deposited separately by A/S segmentation use, white residue by ore, and accurately metering is to assist the purpose that realizes stablizing A/S to adjust the white residue amount, to use the ore of different A/S.
Embodiment
A kind of compound method of raw slurry in aluminium oxide manufactured by sintering method, the step of its process for preparation comprises:
1. the central value of required ore A/S is calculated in the control requirement by charge pulp A/S, is reference with second class ore by this central value, is divided into high alumina, low aluminium, general aluminium ore by the height of its A/S, wherein:
The general aluminium ore A/S+ of high aluminium ore A/S=(2～5); The low general aluminium ore A/S-of aluminium ore A/S=(2～5).
2. white residue is allocated a small amount of seed precipitation solution into and is carried the precipitation that prevents to scab, and leaves in the groove separately and cushion, and accurately measures the amount of allocating into.
3. during ordinary production, use general aluminium ore to be the master, when charge pulp A/S fluctuates, change according to going out to grind charge pulp A/S, at first utilize the surge capability of white residue groove, and A/S is lower, willing characteristics when allocating quantitative change into are adjusted and are gone into to grind the white residue amount, make A/S reach claimed range.Not enough or too much at white residue, add high and low aluminum ore again in the time of can't further adjusting and adjust, guarantee abrasive slurries A/S and meet the requirements of scope.
The present invention is by the accurate control adjustment to white residue, and in addition a small amount of high and low aluminum ore carries out the adjustment of raw meal preparation slurry A/S, the charge pulp A/S fluctuation range that grinds is about central value ± 0.3, through three allotments in the slurry vessel, in central value ± 0.15, the qualification rate qualification rate is more than 95% by fluctuation range for the charge pulp A/S that is sent to chamotte kiln.
Embodiment
Charge pulp A/S is controlled at 4.60-4.75, and high aluminium ore A/S is more than 8.0, and low aluminium ore A/S is below 5.0, and general aluminium ore central value is 6.8.White residue is allocated a small amount of seed precipitation solution into and is deposited at two 300m
3Groove in.Add general aluminium ore during ordinary production, and to keep the white residue amount of allocating into be a mean value stably, when the slip A/S that grinds is higher, at first increase the white residue amount of allocating into, if white residue supply deficiency can add low aluminium ore and adjust; When charge pulp A/S is on the low side, reduce the white residue amount of allocating into earlier, if white residue tank liquor position is high, when buffering is not enough, adding high aluminium ore adjusts, the slip A/S that guarantees to grind out is in the scope of 4.4-5.0, and after three times in slurry vessel allotments, the charge pulp A/S that is sent to chamotte kiln reaches the requirement of 4.6-4.75.
Claims (2)
1. the compound method of a raw slurry in aluminium oxide manufactured by sintering method is characterized in that its process for preparation is at first bauxitic ore to be divided into high aluminium ore, low aluminium ore, general aluminium ore three classes by aluminium silicon A/S to deposit use; The aluminium silicon A/S=general aluminium ore aluminium silicon A/S+ (2～5) of high aluminium ore wherein; Low aluminium ore alumina silica ratio A/S=general aluminium ore alumina silica ratio A/S-(2～5); The white residue slurry is deposited use separately; Use general aluminium ore during production,, at first adjust and go into to grind the white residue amount, re-use the alumina silica ratio A/S that high aluminium ore or low aluminum ore are adjusted abrasive slurries according to going out to grind charge pulp A/S.
2. the compound method of a kind of raw slurry in aluminium oxide manufactured by sintering method according to claim 1, the alumina silica ratio of the general aluminium ore of stating that it is characterized in that is 5.5-7.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100860577A CN101580251B (en) | 2009-06-01 | 2009-06-01 | Method for preparing raw slurry in aluminium oxide manufactured by sintering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100860577A CN101580251B (en) | 2009-06-01 | 2009-06-01 | Method for preparing raw slurry in aluminium oxide manufactured by sintering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101580251A true CN101580251A (en) | 2009-11-18 |
| CN101580251B CN101580251B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100860577A Active CN101580251B (en) | 2009-06-01 | 2009-06-01 | Method for preparing raw slurry in aluminium oxide manufactured by sintering method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897811A (en) * | 2012-11-06 | 2013-01-30 | 大唐国际发电股份有限公司 | Method for blending raw alumina slurry |
| CN106276998A (en) * | 2016-08-25 | 2017-01-04 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of coal ash alkali lime sinter process extracts the raw slurry compound method of aluminium oxide |
| CN106365187A (en) * | 2016-08-30 | 2017-02-01 | 内蒙古大唐国际再生资源开发有限公司 | Preparation method of raw slurry used in process of producing aluminum oxide through sintering method |
-
2009
- 2009-06-01 CN CN2009100860577A patent/CN101580251B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897811A (en) * | 2012-11-06 | 2013-01-30 | 大唐国际发电股份有限公司 | Method for blending raw alumina slurry |
| CN102897811B (en) * | 2012-11-06 | 2014-07-02 | 大唐国际发电股份有限公司 | Method for blending raw alumina slurry |
| CN106276998A (en) * | 2016-08-25 | 2017-01-04 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of coal ash alkali lime sinter process extracts the raw slurry compound method of aluminium oxide |
| CN106365187A (en) * | 2016-08-30 | 2017-02-01 | 内蒙古大唐国际再生资源开发有限公司 | Preparation method of raw slurry used in process of producing aluminum oxide through sintering method |
| CN106365187B (en) * | 2016-08-30 | 2018-10-12 | 内蒙古大唐国际再生资源开发有限公司 | A kind of sintering process produces the configuration method of raw slurry in alumina process |
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| Publication number | Publication date |
|---|---|
| CN101580251B (en) | 2011-05-18 |
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Effective date of registration: 20170713 Address after: Qixian town Henan province 454171 Xiuwu County of Zhongzhou aluminum plant Co-patentee after: Chinalco Zhongzhou new Mstar Technology Ltd Patentee after: Chalco Zhongzhou Aluminium Industry Co., Ltd. Address before: 100082 Beijing, Xizhimen, North Street, No. 62, No. Patentee before: Aluminum Corporation of China Limited |
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